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• Internal Server Error with mod_wsgi [django] on windows xp

  - by sacabuche

  when i run development server it works very well, even an empty project runing in mod_wsgi i have no problem but when i want to put my own project i get an Internal Server Error (500) in my apache conf i put WSGIScriptAlias /codevents C:/django/apache/CODEvents.wsgi <Directory "C:/django/apache"> Order allow,deny Allow from all </Directory> Alias /codevents/media C:/django/projects/CODEvents/html <Directory "C:/django/projects/CODEvents/html"> Order allow,deny Allow from all </Directory> in CODEvents.wsgi import os, sys sys.path.append('C:\\Python26\\Lib\\site-packages\\django') sys.path.append('C:\\django\\projects') sys.path.append('C:\\django\\apps') sys.path.append('C:\\django\\projects\\CODEvents') os.environ['DJANGO_SETTINGS_MODULE'] = 'CODEvents.settings' import django.core.handlers.wsgi application = django.core.handlers.wsgi.WSGIHandler() and in my error_log it said: [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] mod_wsgi (pid=1848): Exception occurred processing WSGI script 'C:/django/apache/CODEvents.wsgi'. [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] Traceback (most recent call last): [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\core\\handlers\\wsgi.py", line 241, in __call__ [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] response = self.get_response(request) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\core\\handlers\\base.py", line 142, in get_response [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self.handle_uncaught_exception(request, resolver, exc_info) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\core\\handlers\\base.py", line 166, in handle_uncaught_exception [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return debug.technical_500_response(request, *exc_info) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\views\\debug.py", line 58, in technical_500_response [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] html = reporter.get_traceback_html() [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\views\\debug.py", line 137, in get_traceback_html [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return t.render(c) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\__init__.py", line 173, in render [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self._render(context) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\__init__.py", line 167, in _render [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self.nodelist.render(context) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\__init__.py", line 796, in render [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] bits.append(self.render_node(node, context)) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\debug.py", line 72, in render_node [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] result = node.render(context) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\debug.py", line 89, in render [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] output = self.filter_expression.resolve(context) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\__init__.py", line 579, in resolve [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] new_obj = func(obj, *arg_vals) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\defaultfilters.py", line 693, in date [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return format(value, arg) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\dateformat.py", line 281, in format [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return df.format(format_string) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\dateformat.py", line 30, in format [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] pieces.append(force_unicode(getattr(self, piece)())) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\dateformat.py", line 187, in r [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self.format('D, j M Y H:i:s O') [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\dateformat.py", line 30, in format [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] pieces.append(force_unicode(getattr(self, piece)())) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\encoding.py", line 66, in force_unicode [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] s = unicode(s) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\functional.py", line 206, in __unicode_cast [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self.__func(*self.__args, **self.__kw) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\__init__.py", line 55, in ugettext [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return real_ugettext(message) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\functional.py", line 55, in _curried [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return _curried_func(*(args+moreargs), **dict(kwargs, **morekwargs)) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\__init__.py", line 36, in delayed_loader [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return getattr(trans, real_name)(*args, **kwargs) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\trans_real.py", line 276, in ugettext [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return do_translate(message, 'ugettext') [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\trans_real.py", line 266, in do_translate [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] _default = translation(settings.LANGUAGE_CODE) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\trans_real.py", line 176, in translation [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] default_translation = _fetch(settings.LANGUAGE_CODE) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\trans_real.py", line 159, in _fetch [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] app = import_module(appname) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\importlib.py", line 35, in import_module [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] __import__(name) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\contrib\\admin\\__init__.py", line 1, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] from django.contrib.admin.helpers import ACTION_CHECKBOX_NAME [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\contrib\\admin\\helpers.py", line 1, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] from django import forms [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\forms\\__init__.py", line 17, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] from models import * [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\forms\\models.py", line 6, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] from django.db import connections [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\db\\__init__.py", line 75, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] connection = connections[DEFAULT_DB_ALIAS] [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\db\\utils.py", line 91, in __getitem__ [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] backend = load_backend(db['ENGINE']) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\db\\utils.py", line 49, in load_backend [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] raise ImproperlyConfigured(error_msg) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] TemplateSyntaxError: Caught ImproperlyConfigured while rendering: 'django.db.backends.postgresql_psycopg2' isn't an available database backend. [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] Try using django.db.backends.XXX, where XXX is one of: [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] 'dummy', 'mysql', 'oracle', 'postgresql', 'postgresql_psycopg2', 'sqlite3' [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] Error was: cannot import name utils please help me!!

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• Internal Server Error with mod_wgsi [django] on windows xp

  - by sacabuche

  when i run development server it works very well, even an empty project runing in mod_wsgi i have no problem but when i want to put my own project i get an Internal Server Error (500) in my apache conf i put WSGIScriptAlias /codevents C:/django/apache/CODEvents.wsgi <Directory "C:/django/apache"> Order allow,deny Allow from all </Directory> Alias /codevents/media C:/django/projects/CODEvents/html <Directory "C:/django/projects/CODEvents/html"> Order allow,deny Allow from all </Directory> in CODEvents.wsgi import os, sys sys.path.append('C:\\Python26\\Lib\\site-packages\\django') sys.path.append('C:\\django\\projects') sys.path.append('C:\\django\\apps') sys.path.append('C:\\django\\projects\\CODEvents') os.environ['DJANGO_SETTINGS_MODULE'] = 'CODEvents.settings' import django.core.handlers.wsgi application = django.core.handlers.wsgi.WSGIHandler() and in my error_log it said: [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] mod_wsgi (pid=1848): Exception occurred processing WSGI script 'C:/django/apache/CODEvents.wsgi'. [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] Traceback (most recent call last): [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\core\\handlers\\wsgi.py", line 241, in __call__ [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] response = self.get_response(request) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\core\\handlers\\base.py", line 142, in get_response [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self.handle_uncaught_exception(request, resolver, exc_info) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\core\\handlers\\base.py", line 166, in handle_uncaught_exception [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return debug.technical_500_response(request, *exc_info) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\views\\debug.py", line 58, in technical_500_response [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] html = reporter.get_traceback_html() [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\views\\debug.py", line 137, in get_traceback_html [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return t.render(c) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\__init__.py", line 173, in render [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self._render(context) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\__init__.py", line 167, in _render [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self.nodelist.render(context) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\__init__.py", line 796, in render [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] bits.append(self.render_node(node, context)) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\debug.py", line 72, in render_node [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] result = node.render(context) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\debug.py", line 89, in render [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] output = self.filter_expression.resolve(context) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\__init__.py", line 579, in resolve [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] new_obj = func(obj, *arg_vals) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\template\\defaultfilters.py", line 693, in date [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return format(value, arg) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\dateformat.py", line 281, in format [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return df.format(format_string) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\dateformat.py", line 30, in format [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] pieces.append(force_unicode(getattr(self, piece)())) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\dateformat.py", line 187, in r [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self.format('D, j M Y H:i:s O') [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\dateformat.py", line 30, in format [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] pieces.append(force_unicode(getattr(self, piece)())) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\encoding.py", line 66, in force_unicode [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] s = unicode(s) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\functional.py", line 206, in __unicode_cast [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return self.__func(*self.__args, **self.__kw) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\__init__.py", line 55, in ugettext [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return real_ugettext(message) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\functional.py", line 55, in _curried [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return _curried_func(*(args+moreargs), **dict(kwargs, **morekwargs)) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\__init__.py", line 36, in delayed_loader [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return getattr(trans, real_name)(*args, **kwargs) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\trans_real.py", line 276, in ugettext [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] return do_translate(message, 'ugettext') [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\trans_real.py", line 266, in do_translate [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] _default = translation(settings.LANGUAGE_CODE) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\trans_real.py", line 176, in translation [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] default_translation = _fetch(settings.LANGUAGE_CODE) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\translation\\trans_real.py", line 159, in _fetch [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] app = import_module(appname) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\utils\\importlib.py", line 35, in import_module [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] __import__(name) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\contrib\\admin\\__init__.py", line 1, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] from django.contrib.admin.helpers import ACTION_CHECKBOX_NAME [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\contrib\\admin\\helpers.py", line 1, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] from django import forms [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\forms\\__init__.py", line 17, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] from models import * [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\forms\\models.py", line 6, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] from django.db import connections [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\db\\__init__.py", line 75, in <module> [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] connection = connections[DEFAULT_DB_ALIAS] [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\db\\utils.py", line 91, in __getitem__ [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] backend = load_backend(db['ENGINE']) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] File "C:\\Python26\\lib\\site-packages\\django\\db\\utils.py", line 49, in load_backend [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] raise ImproperlyConfigured(error_msg) [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] TemplateSyntaxError: Caught ImproperlyConfigured while rendering: 'django.db.backends.postgresql_psycopg2' isn't an available database backend. [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] Try using django.db.backends.XXX, where XXX is one of: [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] 'dummy', 'mysql', 'oracle', 'postgresql', 'postgresql_psycopg2', 'sqlite3' [Mon May 24 23:31:39 2010] [error] [client 127.0.0.1] Error was: cannot import name utils please help me!!

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• .LazyInitializationException when adding to a list that is held within a entity class using hibernat

  - by molleman

  Right so i am working with hibernate gilead and gwt to persist my data on users and files of a website. my users have a list of file locations. i am using annotations to map my classes to the database. i am getting a org.hibernate.LazyInitializationException when i try to add file locations to the list that is held in the user class. this is a method below that is overridden from a external file upload servlet class that i am using. when the file uploads it calls this method. the user1 is loaded from the database elsewhere. the exception occurs at user1.getFileLocations().add(fileLocation); . i dont understand it really at all.! any help would be great. the stack trace of the error is below public String executeAction(HttpServletRequest request, List<FileItem> sessionFiles) throws UploadActionException { for (FileItem item : sessionFiles) { if (false == item.isFormField()) { try { YFUser user1 = (YFUser)getSession().getAttribute(SESSION_USER); // This is the location where a file will be stored String fileLocationString = "/Users/Stefano/Desktop/UploadedFiles/" + user1.getUsername(); File fl = new File(fileLocationString); fl.mkdir(); // so here i will create the a file container for my uploaded file File file = File.createTempFile("upload-", ".bin",fl); // this is where the file is written to disk item.write(file); // the FileLocation object is then created FileLocation fileLocation = new FileLocation(); fileLocation.setLocation(fileLocationString); //test System.out.println("file path = "+file.getPath()); user1.getFileLocations().add(fileLocation); //the line above is where the exception occurs } catch (Exception e) { throw new UploadActionException(e.getMessage()); } } removeSessionFileItems(request); } return null; } //This is the class file for a Your Files User @Entity @Table(name = "yf_user_table") public class YFUser implements Serializable,ILightEntity { @Id @GeneratedValue(strategy = GenerationType.AUTO) @Column(name = "user_id",nullable = false) private int userId; @Column(name = "username") private String username; @Column(name = "password") private String password; @Column(name = "email") private String email; @ManyToMany(cascade = CascadeType.ALL) @JoinTable(name = "USER_FILELOCATION", joinColumns = { @JoinColumn(name = "user_id") }, inverseJoinColumns = { @JoinColumn(name = "locationId") }) private List<FileLocation> fileLocations = new ArrayList<FileLocation>() ; public YFUser(){ } public int getUserId() { return userId; } private void setUserId(int userId) { this.userId = userId; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } public List<FileLocation> getFileLocations() { if(fileLocations ==null){ fileLocations = new ArrayList<FileLocation>(); } return fileLocations; } public void setFileLocations(List<FileLocation> fileLocations) { this.fileLocations = fileLocations; } /* public void addFileLocation(FileLocation location){ fileLocations.add(location); }*/ @Override public void addProxyInformation(String property, Object proxyInfo) { // TODO Auto-generated method stub } @Override public String getDebugString() { // TODO Auto-generated method stub return null; } @Override public Object getProxyInformation(String property) { // TODO Auto-generated method stub return null; } @Override public boolean isInitialized(String property) { // TODO Auto-generated method stub return false; } @Override public void removeProxyInformation(String property) { // TODO Auto-generated method stub } @Override public void setInitialized(String property, boolean initialised) { // TODO Auto-generated method stub } @Override public Object getValue() { // TODO Auto-generated method stub return null; } } @Entity @Table(name = "fileLocationTable") public class FileLocation implements Serializable { @Id @GeneratedValue(strategy = GenerationType.AUTO) @Column(name = "locationId", updatable = false, nullable = false) private int ieId; @Column (name = "location") private String location; /* private List uploadedUsers = new ArrayList(); */ public FileLocation(){ } public int getIeId() { return ieId; } private void setIeId(int ieId) { this.ieId = ieId; } public String getLocation() { return location; } public void setLocation(String location) { this.location = location; } /* public List getUploadedUsers() { return uploadedUsers; } public void setUploadedUsers(List<YFUser> uploadedUsers) { this.uploadedUsers = uploadedUsers; } public void addUploadedUser(YFUser user){ uploadedUsers.add(user); } */ } Apr 2, 2010 11:33:12 PM org.hibernate.LazyInitializationException <init> SEVERE: failed to lazily initialize a collection of role: com.example.client.YFUser.fileLocations, no session or session was closed org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.example.client.YFUser.fileLocations, no session or session was closed at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:380) at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:372) at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:365) at org.hibernate.collection.AbstractPersistentCollection.write(AbstractPersistentCollection.java:205) at org.hibernate.collection.PersistentBag.add(PersistentBag.java:297) at com.example.server.TestServiceImpl.saveFileLocation(TestServiceImpl.java:132) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at net.sf.gilead.gwt.PersistentRemoteService.processCall(PersistentRemoteService.java:174) at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:224) at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62) at javax.servlet.http.HttpServlet.service(HttpServlet.java:713) at javax.servlet.http.HttpServlet.service(HttpServlet.java:806) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:49) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:324) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505) at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:843) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:396) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488) Apr 2, 2010 11:33:12 PM net.sf.gilead.core.PersistentBeanManager clonePojo INFO: Third party instance, not cloned : org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.example.client.YFUser.fileLocations, no session or session was closed

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• whats wrong with the following code

  - by giri

  Hi i am trying to send sms to my mobile using java.When I run the application I am getting the the follwing error. package HelloWorld; import java.io.*; import java.util.BitSet; import javax.comm.*; import java.lang.*; public class SerialToGsm { InputStream in; OutputStream out; String lastIndexRead; String senderNum; String smsMsg; SerialToGsm(String porta) { try { // CommPortIdentifier portId = CommPortIdentifier.getPortIdentifier("serial0"); CommPortIdentifier portId = CommPortIdentifier.getPortIdentifier(porta); SerialPort sp = (SerialPort)portId.open("Sms_GSM", 0); sp.setSerialPortParams(9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE); sp.setFlowControlMode(sp.FLOWCONTROL_NONE); in = sp.getInputStream(); out = sp.getOutputStream(); // modem reset sendAndRecv("+++AT", 30); // delay for 20 sec/10 sendAndRecv("AT&F", 30); sendAndRecv("ATE0", 30); // echo off sendAndRecv("AT +CMEE=1", 30); // verbose error messages sendAndRecv("AT+CMGF=0", 70); // set pdu mode // sendAndRecv("AT V1E0S0=0&D2&C1", 1000000); } catch (Exception e) { System.out.println("Exception " + e); System.exit(1); } } private String sendAndRecv(String s, int timeout) { try { // clean serial port input buffer in.skip(in.available()); System.out.println("=> " + s); s = s + "\r"; // add CR out.write(s.getBytes()); out.flush(); String strIn = new String(); for (int i = 0; i < timeout; i++){ int numChars = in.available(); if (numChars > 0) { byte[] bb = new byte[numChars]; in.read(bb,0,numChars); strIn += new String(bb); } // start exit conditions // --------------------- if (strIn.indexOf(">\r\n") != -1) { break; } if (strIn.indexOf("OK\r\n") != -1){ break; } if (strIn.indexOf("ERROR") != -1) { // if find 'error' wait for CR+LF if (strIn.indexOf("\r\n",strIn.indexOf("ERROR") + 1) != -1) { break; } } Thread.sleep(100); // delay 1/10 sec } System.out.println("<= " + strIn); if (strIn.length() == 0) { return "ERROR: len 0"; } return strIn; } catch (Exception e) { System.out.println("send e recv Exception " + e); return "ERROR: send e recv Exception"; } } public String sendSms (String numToSend, String whatToSend) { ComputSmsData sms = new ComputSmsData(); sms.setAsciiTxt(whatToSend); sms.setTelNum(numToSend); // sms.setSMSCTelNum("+393359609600"); // SC fixed String s = new String(); s = sendAndRecv("AT+CMGS=" + (sms.getCompletePduData().length() / 2) + "\r", 30); // System.out.println("==> AT+CMGS=" + (sms.getCompletePduData().length() / 2)); // System.out.println("<== " + s); if (s.indexOf(">") != -1) { // s = sendAndRecv(sms.getSMSCPduData() + sms.getCompletePduData() + "\u001A"); // usefull one day? // System.out.println("Inviero questo >>>> " + sms.getCompletePduData()); // if this sintax won't work try remove 00 prefix s = sendAndRecv("00" + sms.getCompletePduData() + "\u001A", 150); // System.out.println("<== " + s); return s; } else { return "ERROR"; } } // used to reset message data private void resetGsmObj() { lastIndexRead = null; senderNum = null; smsMsg = null; } public String checkSms (){ String str = new String(); String strGsm = new String(); strGsm = sendAndRecv("AT+CMGL=0", 30); // list unread msg and sign them as read // if answer contain ERROR then ERROR if (strGsm.indexOf("ERROR") != -1) { resetGsmObj(); return strGsm; // error } strGsm = sendAndRecv("AT+CMGL=1", 30); // list read msg // if answer contain ERROR then ERROR if (strGsm.indexOf("ERROR") != -1) { resetGsmObj(); return strGsm; // error } // evaluate message index if (strGsm.indexOf(':') <= 0) { resetGsmObj(); return ("ERROR unexpected answer"); } str = strGsm.substring(strGsm.indexOf(':') + 1,strGsm.indexOf(',')); str = str.trim(); // remove white spaces // System.out.println("Index: " + str); lastIndexRead = str; // find message string // ------------------- // look for start point (search \r, then skip \n, add and one more for right char int startPoint = strGsm.indexOf("\r",(strGsm.indexOf(":") + 1)) + 2; int endPoint = strGsm.indexOf("\r",startPoint + 1); if (endPoint == -1) { // only one message endPoint = strGsm.length(); } // extract string str = strGsm.substring(startPoint, endPoint); System.out.println("String to be decoded :" + str); ComputSmsData sms = new ComputSmsData(); sms.setRcvdPdu(str); // SMSCNum = new String(sms.getRcvdPduSMSC()); senderNum = new String(sms.getRcvdSenderNumber()); smsMsg = new String(sms.getRcvdPduTxt()); System.out.println("SMSC number: " + sms.getRcvdPduSMSC()); System.out.println("Sender number: " + sms.getRcvdSenderNumber()); System.out.println("Message: " + sms.getRcvdPduTxt()); return "OK"; } public String readSmsSender() { return senderNum; } public String readSms() { return smsMsg; } public String delSms() { if (lastIndexRead != "") { return sendAndRecv("AT+CMGD=" + lastIndexRead, 30); } return ("ERROR"); } } ERROR: Error loading SolarisSerial: java.lang.UnsatisfiedLinkError: no SolarisSerialParallel in java.library.path Caught java.lang.UnsatisfiedLinkError: com.sun.comm.SolarisDriver.readRegistrySerial(Ljava/util/Vector;Ljava/lang/String;)I while loading driver com.sun.comm.SolarisDriver Exception javax.comm.NoSuchPortException

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• Implementation of Nib project to Storyboard, Xcode

  - by Blake Loizides

  I have made a tabbed bar application in storyboard in xcode. I,m new to xcode. I got a Sample TableView XIB project from apple that I edited to my needs,The project has a UITableView that I Customized with Images, And with help of a certain forum member I was able to link up each image to a New View Controller. I tried to port or integrate My Nib Project Code to my StoryBoard Tabbed Bar Application.I thought I had everything right had to comment out a few things to get no errors, But the project only goes to a Blank Table View. Below are 2 links, 1 to my StoryBoard Tabbed Bar Application with the Table Code that I tried to integrate and the other My Successful Nib Project. Also is some code and pictures. If anybody has some free time and does not mind to help I would be extremely grateful for any input given. link1 - Storyboard link2 - XIB DecorsViewController_iPhone.m // // TableViewsViewController.m // TableViews // // Created by Axit Patel on 9/2/10. // Copyright Bayside High School 2010. All rights reserved. // #import "DecorsViewController_iPhone.h" #import "SelectedCellViewController.h" @implementation DecorsViewController_iPhone #pragma mark - Synthesizers @synthesize sitesArray; @synthesize imagesArray; #pragma mark - View lifecycle // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { // Load up the sitesArray with a dummy array : sites NSArray *sites = [[NSArray alloc] initWithObjects:@"a", @"b", @"c", @"d", @"e", @"f", @"g", @"h", nil]; self.sitesArray = sites; //[sites release]; UIImage *PlumTree = [UIImage imageNamed:@"a.png"]; UIImage *CherryRoyale = [UIImage imageNamed:@"b.png"]; UIImage *MozambiqueWenge = [UIImage imageNamed:@"c.png"]; UIImage *RoyaleMahogany = [UIImage imageNamed:@"d.png"]; UIImage *Laricina = [UIImage imageNamed:@"e.png"]; UIImage *BurntOak = [UIImage imageNamed:@"f.png"]; UIImage *AutrianOak = [UIImage imageNamed:@"g.png"]; UIImage *SilverAcacia = [UIImage imageNamed:@"h.png"]; NSArray *images = [[NSArray alloc] initWithObjects: PlumTree, CherryRoyale, MozambiqueWenge, RoyaleMahogany, Laricina, BurntOak, AutrianOak, SilverAcacia, nil]; self.imagesArray = images; //[images release]; [super viewDidLoad]; } #pragma mark - Table View datasource methods // Required Methods // Return the number of rows in a section - (NSInteger)tableView:(UITableView *)table numberOfRowsInSection:(NSInteger)section { return [sitesArray count]; } // Returns cell to render for each row - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"CellIdentifier"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier]; // Configure cell NSUInteger row = [indexPath row]; // Sets the text for the cell //cell.textLabel.text = [sitesArray objectAtIndex:row]; // Sets the imageview for the cell cell.imageView.image = [imagesArray objectAtIndex:row]; // Sets the accessory for the cell cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; // Sets the detailtext for the cell (subtitle) //cell.detailTextLabel.text = [NSString stringWithFormat:@"This is row: %i", row + 1]; return cell; } // Optional // Returns the number of section in a table view -(NSInteger) numberOfSectionsInTableView:(UITableView *)tableView { return 1; } #pragma mark - #pragma mark Table View delegate methods // Return the height for each cell -(CGFloat) tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { return 78; } // Sets the title for header in the tableview -(NSString *) tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section { return @"Decors"; } // Sets the title for footer -(NSString *) tableView:(UITableView *)tableView titleForFooterInSection:(NSInteger)section { return @"Decors"; } // Sets the indentation for rows -(NSInteger) tableView:(UITableView *)tableView indentationLevelForRowAtIndexPath:(NSIndexPath *)indexPath { return 0; } // Method that gets called from the "Done" button (From the @selector in the line - [viewControllerToShow.navigationItem setRightBarButtonItem:[[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(dismissView)] autorelease]];) - (void)dismissView { [self dismissViewControllerAnimated:YES completion:NULL]; } // This method is run when the user taps the row in the tableview - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { [tableView deselectRowAtIndexPath:indexPath animated:YES]; SelectedCellViewController *viewControllerToShow = [[SelectedCellViewController alloc] initWithNibName:@"SelectedCellViewController" bundle:[NSBundle mainBundle]]; [viewControllerToShow setLabelText:[NSString stringWithFormat:@"You selected cell: %d - %@", indexPath.row, [sitesArray objectAtIndex:indexPath.row]]]; [viewControllerToShow setImage:(UIImage *)[imagesArray objectAtIndex:indexPath.row]]; [viewControllerToShow setModalPresentationStyle:UIModalPresentationFormSheet]; [viewControllerToShow setModalTransitionStyle:UIModalTransitionStyleFlipHorizontal]; [viewControllerToShow.navigationItem setRightBarButtonItem:[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(dismissView)]]; UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:viewControllerToShow]; viewControllerToShow = nil; [self presentViewController:navController animated:YES completion:NULL]; navController = nil; // UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Tapped row!" // message:[NSString stringWithFormat:@"You tapped: %@", [sitesArray objectAtIndex:indexPath.row]] // delegate:nil // cancelButtonTitle:@"Yes, I did!" // otherButtonTitles:nil]; // [alert show]; // [alert release]; } #pragma mark - Memory management - (void)didReceiveMemoryWarning { NSLog(@"Memory Warning!"); [super didReceiveMemoryWarning]; } - (void)viewDidUnload { self.sitesArray = nil; self.imagesArray = nil; [super viewDidUnload]; } //- (void)dealloc { //[sitesArray release]; //[imagesArray release]; // [super dealloc]; //} //@end //- (void)viewDidUnload //{ // [super viewDidUnload]; // Release any retained subviews of the main view. //} - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) { return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown); } else { return YES; } } @end DecorsViewController_iPhone.h #import <UIKit/UIKit.h> @interface DecorsViewController_iPhone : UIViewController <UITableViewDelegate, UITableViewDataSource> { NSArray *sitesArray; NSArray *imagesArray; } @property (nonatomic, retain) NSArray *sitesArray; @property (nonatomic, retain) NSArray *imagesArray; @end SelectedCellViewController.m #import "SelectedCellViewController.h" @implementation SelectedCellViewController @synthesize labelText; @synthesize image; - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { if ((self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil])) { } return self; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; } #pragma mark - View lifecycle - (void)viewDidLoad { [super viewDidLoad]; [label setText:self.labelText]; [imageView setImage:self.image]; } - (void)viewDidUnload { self.labelText = nil; self.image = nil; // [label release]; // [imageView release]; [super viewDidUnload]; } - (BOOL)shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation)interfaceOrientation { return (interfaceOrientation == UIInterfaceOrientationPortrait); } @end SelectedCellViewController.h @interface SelectedCellViewController : UIViewController { NSString *labelText; UIImage *image; IBOutlet UILabel *label; IBOutlet UIImageView *imageView; } @property (nonatomic, copy) NSString *labelText; @property (nonatomic, retain) UIImage *image; @end

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• Inserting Records in Ascending Order function- C homework assignment

  - by Aaron McRuer

  Good day, Stack Overflow. I have a homework assignment that I'm working on this weekend that I'm having a bit of a problem with. We have a struct "Record" (which contains information about cars for a dealership) that gets placed in a particular spot in a linked list according to 1) its make and 2) according to its model year. This is done when initially building the list, when a "int insertRecordInAscendingOrder" function is called in Main. In "insertRecordInAscendingOrder", a third function, "createRecord" is called, where the linked list is created. The function then goes to the function "compareCars" to determine what elements get put where. Depending on the value returned by this function, insertRecordInAscendingOrder then places the record where it belongs. The list is then printed out. There's more to the assignment, but I'll cross that bridge when I come to it. Ideally, and for the assignment to be considered correct, the linked list must be ordered as: Chevrolet 2012 25 Chevrolet 2013 10 Ford 2010 5 Ford 2011 3 Ford 2012 15 Honda 2011 9 Honda 2012 3 Honda 2013 12 Toyota 2009 2 Toyota 2011 7 Toyota 2013 20 from the a text file that has the data ordered the following way: Ford 2012 15 Ford 2011 3 Ford 2010 5 Toyota 2011 7 Toyota 2012 20 Toyota 2009 2 Honda 2011 9 Honda 2012 3 Honda 2013 12 Chevrolet 2013 10 Chevrolet 2012 25 Notice that the alphabetical order of the "make" field takes precedence, then, the model year is arranged from oldest to newest. However, the program produces this as the final list: Chevrolet 2012 25 Chevrolet 2013 10 Honda 2011 9 Honda 2012 3 Honda 2013 12 Toyota 2009 2 Toyota 2011 7 Toyota 2012 20 Ford 2010 5 Ford 2011 3 Ford 2012 15 I sat down with a grad student and tried to work out all of this yesterday, but we just couldn't figure out why it was kicking the Ford nodes down to the end of the list. Here's the code. As you'll notice, I included a printList call at each instance of the insertion of a node. This way, you can see just what is happening when the nodes are being put in "order". It is in ANSI C99. All function calls must be made as they are specified, so unfortunately, there's no real way of getting around this problem by creating a more efficient algorithm. #include <stdio.h> #include <stdlib.h> #include <string.h> #define MAX_LINE 50 #define MAX_MAKE 20 typedef struct record { char *make; int year; int stock; struct record *next; } Record; int compareCars(Record *car1, Record *car2); void printList(Record *head); Record* createRecord(char *make, int year, int stock); int insertRecordInAscendingOrder(Record **head, char *make, int year, int stock); int main(int argc, char **argv) { FILE *inFile = NULL; char line[MAX_LINE + 1]; char *make, *yearStr, *stockStr; int year, stock, len; Record* headRecord = NULL; /*Input and file diagnostics*/ if (argc!=2) { printf ("Filename not provided.\n"); return 1; } if((inFile=fopen(argv[1], "r"))==NULL) { printf("Can't open the file\n"); return 2; } /*obtain values for linked list*/ while (fgets(line, MAX_LINE, inFile)) { make = strtok(line, " "); yearStr = strtok(NULL, " "); stockStr = strtok(NULL, " "); year = atoi(yearStr); stock = atoi(stockStr); insertRecordInAscendingOrder(&headRecord,make, year, stock); } printf("The original list in ascending order: \n"); printList(headRecord); } /*use strcmp to compare two makes*/ int compareCars(Record *car1, Record *car2) { int compStrResult; compStrResult = strcmp(car1->make, car2->make); int compYearResult = 0; if(car1->year > car2->year) { compYearResult = 1; } else if(car1->year == car2->year) { compYearResult = 0; } else { compYearResult = -1; } if(compStrResult == 0 ) { if(compYearResult == 1) { return 1; } else if(compYearResult == -1) { return -1; } else { return compStrResult; } } else if(compStrResult == 1) { return 1; } else { return -1; } } int insertRecordInAscendingOrder(Record **head, char *make, int year, int stock) { Record *previous = *head; Record *newRecord = createRecord(make, year, stock); Record *current = *head; int compResult; if(*head == NULL) { *head = newRecord; printf("Head is null, list was empty\n"); printList(*head); return 1; } else if ( compareCars(newRecord, *head)==-1) { *head = newRecord; (*head)->next = current; printf("New record was less than the head, replacing\n"); printList(*head); return 1; } else { printf("standard case, searching and inserting\n"); previous = *head; while ( current != NULL &&(compareCars(newRecord, current)==1)) { printList(*head); previous = current; current = current->next; } printList(*head); previous->next = newRecord; previous->next->next = current; } return 1; } /*creates records from info passed in from main via insertRecordInAscendingOrder.*/ Record* createRecord(char *make, int year, int stock) { printf("CreateRecord\n"); Record *theRecord; int len; if(!make) { return NULL; } theRecord = malloc(sizeof(Record)); if(!theRecord) { printf("Unable to allocate memory for the structure.\n"); return NULL; } theRecord->year = year; theRecord->stock = stock; len = strlen(make); theRecord->make = malloc(len + 1); strncpy(theRecord->make, make, len); theRecord->make[len] = '\0'; theRecord->next=NULL; return theRecord; } /*prints list. lists print.*/ void printList(Record *head) { int i; int j = 50; Record *aRecord; aRecord = head; for(i = 0; i < j; i++) { printf("-"); } printf("\n"); printf("%20s%20s%10s\n", "Make", "Year", "Stock"); for(i = 0; i < j; i++) { printf("-"); } printf("\n"); while(aRecord != NULL) { printf("%20s%20d%10d\n", aRecord->make, aRecord->year, aRecord->stock); aRecord = aRecord->next; } printf("\n"); } The text file you'll need for a command line argument can be saved under any name you like; here are the contents you'll need: Ford 2012 15 Ford 2011 3 Ford 2010 5 Toyota 2011 7 Toyota 2012 20 Toyota 2009 2 Honda 2011 9 Honda 2012 3 Honda 2013 12 Chevrolet 2013 10 Chevrolet 2012 25 Thanks in advance for your help. I shall continue to plow away at it myself.

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• C++ non-member functions for nested template classes

  - by beldaz

  I have been writing several class templates that contain nested iterator classes, for which an equality comparison is required. As I believe is fairly typical, the comparison is performed with a non-member (and non-friend) operator== function. In doing so, my compiler (I'm using Mingw32 GCC 4.4 with flags -O3 -g -Wall) fails to find the function and I have run out of possible reasons. In the rather large block of code below there are three classes: a Base class, a Composed class that holds a Base object, and a Nested class identical to the Composed class except that it is nested within an Outer class. Non-member operator== functions are supplied for each. These classes are in templated and untemplated forms (in their own respective namespaces), with the latter equivalent to the former specialised for unsigned integers. In main, two identical objects for each class are compared. For the untemplated case there is no problem, but for the templated case the compiler fails to find operator==. What's going on? #include <iostream> namespace templated { template<typename T> class Base { T t_; public: explicit Base(const T& t) : t_(t) {} bool equal(const Base& x) const { return x.t_==t_; } }; template<typename T> bool operator==(const Base<T> &x, const Base<T> &y) { return x.equal(y); } template<typename T> class Composed { typedef Base<T> Base_; Base_ base_; public: explicit Composed(const T& t) : base_(t) {} bool equal(const Composed& x) const {return x.base_==base_;} }; template<typename T> bool operator==(const Composed<T> &x, const Composed<T> &y) { return x.equal(y); } template<typename T> class Outer { public: class Nested { typedef Base<T> Base_; Base_ base_; public: explicit Nested(const T& t) : base_(t) {} bool equal(const Nested& x) const {return x.base_==base_;} }; }; template<typename T> bool operator==(const typename Outer<T>::Nested &x, const typename Outer<T>::Nested &y) { return x.equal(y); } } // namespace templated namespace untemplated { class Base { unsigned int t_; public: explicit Base(const unsigned int& t) : t_(t) {} bool equal(const Base& x) const { return x.t_==t_; } }; bool operator==(const Base &x, const Base &y) { return x.equal(y); } class Composed { typedef Base Base_; Base_ base_; public: explicit Composed(const unsigned int& t) : base_(t) {} bool equal(const Composed& x) const {return x.base_==base_;} }; bool operator==(const Composed &x, const Composed &y) { return x.equal(y); } class Outer { public: class Nested { typedef Base Base_; Base_ base_; public: explicit Nested(const unsigned int& t) : base_(t) {} bool equal(const Nested& x) const {return x.base_==base_;} }; }; bool operator==(const Outer::Nested &x, const Outer::Nested &y) { return x.equal(y); } } // namespace untemplated int main() { using std::cout; unsigned int testVal=3; { // No templates first typedef untemplated::Base Base_t; Base_t a(testVal); Base_t b(testVal); cout << "a=b=" << testVal << "\n"; cout << "a==b ? " << (a==b ? "TRUE" : "FALSE") << "\n"; typedef untemplated::Composed Composed_t; Composed_t c(testVal); Composed_t d(testVal); cout << "c=d=" << testVal << "\n"; cout << "c==d ? " << (c==d ? "TRUE" : "FALSE") << "\n"; typedef untemplated::Outer::Nested Nested_t; Nested_t e(testVal); Nested_t f(testVal); cout << "e=f=" << testVal << "\n"; cout << "e==f ? " << (e==f ? "TRUE" : "FALSE") << "\n"; } { // Now with templates typedef templated::Base<unsigned int> Base_t; Base_t a(testVal); Base_t b(testVal); cout << "a=b=" << testVal << "\n"; cout << "a==b ? " << (a==b ? "TRUE" : "FALSE") << "\n"; typedef templated::Composed<unsigned int> Composed_t; Composed_t c(testVal); Composed_t d(testVal); cout << "c=d=" << testVal << "\n"; cout << "d==c ? " << (c==d ? "TRUE" : "FALSE") << "\n"; typedef templated::Outer<unsigned int>::Nested Nested_t; Nested_t e(testVal); Nested_t f(testVal); cout << "e=f=" << testVal << "\n"; cout << "e==f ? " << (e==f ? "TRUE" : "FALSE") << "\n"; // Above line causes compiler error: // error: no match for 'operator==' in 'e == f' } cout << std::endl; return 0; }

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• Sending mail from html through php will return to php page. It should be in the same contact form. How to do it?

  - by Ershad

  Hi, I have a html page with all images and other text. Below i have the contact form. i am new to php. I have used php to send mail. But when i click on send button,it is going to backend.php. And i have a blank page. What i need is it should in the same page. I have done some javascript to show and hide div's. With this i am showing a thank u msg in the same page. But i dont want to redirect browser to show it is going to backend.php.TO be in the same page i have redirected php to another window. My code is - backend.php <?php if($_POST['message']) { $body = "Name: ".$_POST['name']; $body .= "<br>Email: ".$_POST['email']; $body .= "<br>Phone/Mobile: ".$_POST['phone'] $body .= "<br>Address: ".$_POST['address'] $body .= "<br>Message: ".$_POST['msg'] if(mail("[email protected]","Subjects",$body)) echo 'true'; else echo 'false;'; } ?> form code - <form onsubmit="return validateFormOnSubmit(this)" action="backend.php" method="post" target="_blank"> <table align="left"> <tbody> <tr> <td align="left"><label for="name">Enter your name:</label> <label style="color:red;display:none;font-size:18px;" Id="namestar">*</label></td> </tr> <tr><td align="left"><input Id="name" name="name" style="width:515px;" size="35" maxlength="50" type="text"></td></tr> <tr ><td height="12px"/></tr> <tr> <td align="left"><label for="email">Email Address:</label> <label style="color:red;display:none;font-size:18px;" Id="emailstar">*</label></td> </tr> <tr><td align="left"><input Id="email" name="email" style="width:515px;" type="text"></td></tr> <tr><td height="12px"/></tr> <tr> <td align="left"><label for="phone">Phone/Mobile:</label><label style="color:red;font-size:18px;display:none;" Id="phonestar">*</label></td> </tr> <tr><td align="left"><input Id="phone" name="phone" style="width:515px;" type="text"></td></tr> <tr><td height="12px"/></tr> <tr> <td align="left"><label for="address">Your Address:</label><label style="color:red;font-size:18px;display:none;" Id="addressstar">*</label></td> </tr> <tr><td align="left"><input id="address" name="address" style="width:515px;" type="text"></td></tr> <tr><td height="12px"/></tr> <tr> <td align="left"><label for="msg">Enter Your Comments / Suggestions / Enquiries</label><label style="color:red;font-size:18px;display:none;" Id="messagestar">*</label></td> </tr> <tr><td align="left"><textarea id="msg" name="msg" style="width:515px;height:100px;" type="text"></textarea></td></tr> <tr><td height="12px"/></tr> <tr> <td align="right"><table align="left"> <tbody> <tr > <td style="width:160px;"/> <td style="width:250px;" ><label Id="mandatory" style="display:none;color:red;" >* Mandatory fields</label></td> <td ><input type="submit" name="send" value="send" /></td><td > <input type="reset" name="reset" value="reset" onclick="resetAll()" /></td></tr> </tbody> </table> </td> </tr> </tbody> </table>

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• Remove accents from String .NET

  - by developerit

  Private Const ACCENT As String = “ÀÁÂÃÄÅàáâãäåÒÓÔÕÖØòóôõöøÈÉÊËèéêëÌÍÎÏìíîïÙÚÛÜùúûüÿÑñÇç” Private Const SANSACCENT As String = “AAAAAAaaaaaaOOOOOOooooooEEEEeeeeIIIIiiiiUUUUuuuuyNnCc” Public Shared Function FormatForUrl(ByVal uriBase As String) As String If String.IsNullOrEmpty(uriBase) Then Return uriBase End If ‘// Declaration de variables Dim chaine As String = uriBase.Trim.Replace(” “, “-”) chaine = chaine.Replace(” “c, “-”c) chaine = chaine.Replace(“–”, “-”) chaine = chaine.Replace(“‘”c, String.Empty) chaine = chaine.Replace(“?”c, String.Empty) chaine = chaine.Replace(“#”c, String.Empty) chaine = chaine.Replace(“:”c, String.Empty) chaine = chaine.Replace(“;”c, String.Empty) ‘// Conversion des chaines en tableaux de caractŠres Dim tableauSansAccent As Char() = SANSACCENT.ToCharArray Dim tableauAccent As Char() = ACCENT.ToCharArray ‘// Pour chaque accent For i As Integer = 0 To ACCENT.Length – 1 ‘ // Remplacement de l’accent par son ‚quivalent sans accent dans la chaŒne de caractŠres chaine = chaine.Replace(tableauAccent(i).ToString(), tableauSansAccent(i).ToString()) Next ‘// Retour du resultat Return chaine End Function

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• Introducing the Earthquake Locator – A Bing Maps Silverlight Application, part 1

  - by Bobby Diaz

  Update: Live demo and source code now available!  The recent wave of earthquakes (no pun intended) being reported in the news got me wondering about the frequency and severity of earthquakes around the world. Since I’ve been doing a lot of Silverlight development lately, I decided to scratch my curiosity with a nice little Bing Maps application that will show the location and relative strength of recent seismic activity. Here is a list of technologies this application will utilize, so be sure to have everything downloaded and installed if you plan on following along. Silverlight 3 WCF RIA Services Bing Maps Silverlight Control * Managed Extensibility Framework (optional) MVVM Light Toolkit (optional) log4net (optional) * If you are new to Bing Maps or have not signed up for a Developer Account, you will need to visit www.bingmapsportal.com to request a Bing Maps key for your application. Getting Started We start out by creating a new Silverlight Application called EarthquakeLocator and specify that we want to automatically create the Web Application Project with RIA Services enabled. I cleaned up the web app by removing the Default.aspx and EarthquakeLocatorTestPage.html. Then I renamed the EarthquakeLocatorTestPage.aspx to Default.aspx and set it as my start page. I also set the development server to use a specific port, as shown below. RIA Services Next, I created a Services folder in the EarthquakeLocator.Web project and added a new Domain Service Class called EarthquakeService.cs. This is the RIA Services Domain Service that will provide earthquake data for our client application. I am not using LINQ to SQL or Entity Framework, so I will use the <empty domain service class> option. We will be pulling data from an external Atom feed, but this example could just as easily pull data from a database or another web service. This is an important distinction to point out because each scenario I just mentioned could potentially use a different Domain Service base class (i.e. LinqToSqlDomainService<TDataContext>). Now we can start adding Query methods to our EarthquakeService that pull data from the USGS web site. Here is the complete code for our service class: using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.ServiceModel.Syndication; using System.Web.DomainServices; using System.Web.Ria; using System.Xml; using log4net; using EarthquakeLocator.Web.Model;   namespace EarthquakeLocator.Web.Services {     /// <summary>     /// Provides earthquake data to client applications.     /// </summary>     [EnableClientAccess()]     public class EarthquakeService : DomainService     {         private static readonly ILog log = LogManager.GetLogger(typeof(EarthquakeService));           // USGS Data Feeds: http://earthquake.usgs.gov/earthquakes/catalogs/         private const string FeedForPreviousDay =             "http://earthquake.usgs.gov/earthquakes/catalogs/1day-M2.5.xml";         private const string FeedForPreviousWeek =             "http://earthquake.usgs.gov/earthquakes/catalogs/7day-M2.5.xml";           /// <summary>         /// Gets the earthquake data for the previous week.         /// </summary>         /// <returns>A queryable collection of <see cref="Earthquake"/> objects.</returns>         public IQueryable<Earthquake> GetEarthquakes()         {             var feed = GetFeed(FeedForPreviousWeek);             var list = new List<Earthquake>();               if ( feed != null )             {                 foreach ( var entry in feed.Items )                 {                     var quake = CreateEarthquake(entry);                     if ( quake != null )                     {                         list.Add(quake);                     }                 }             }               return list.AsQueryable();         }           /// <summary>         /// Creates an <see cref="Earthquake"/> object for each entry in the Atom feed.         /// </summary>         /// <param name="entry">The Atom entry.</param>         /// <returns></returns>         private Earthquake CreateEarthquake(SyndicationItem entry)         {             Earthquake quake = null;             string title = entry.Title.Text;             string summary = entry.Summary.Text;             string point = GetElementValue<String>(entry, "point");             string depth = GetElementValue<String>(entry, "elev");             string utcTime = null;             string localTime = null;             string depthDesc = null;             double? magnitude = null;             double? latitude = null;             double? longitude = null;             double? depthKm = null;               if ( !String.IsNullOrEmpty(title) && title.StartsWith("M") )             {                 title = title.Substring(2, title.IndexOf(',')-3).Trim();                 magnitude = TryParse(title);             }             if ( !String.IsNullOrEmpty(point) )             {                 var values = point.Split(' ');                 if ( values.Length == 2 )                 {                     latitude = TryParse(values[0]);                     longitude = TryParse(values[1]);                 }             }             if ( !String.IsNullOrEmpty(depth) )             {                 depthKm = TryParse(depth);                 if ( depthKm != null )                 {                     depthKm = Math.Round((-1 * depthKm.Value) / 100, 2);                 }             }             if ( !String.IsNullOrEmpty(summary) )             {                 summary = summary.Replace("</p>", "");                 var values = summary.Split(                     new string[] { "<p>" },                     StringSplitOptions.RemoveEmptyEntries);                   if ( values.Length == 3 )                 {                     var times = values[1].Split(                         new string[] { "<br>" },                         StringSplitOptions.RemoveEmptyEntries);                       if ( times.Length > 0 )                     {                         utcTime = times[0];                     }                     if ( times.Length > 1 )                     {                         localTime = times[1];                     }                       depthDesc = values[2];                     depthDesc = "Depth: " + depthDesc.Substring(depthDesc.IndexOf(":") + 2);                 }             }               if ( latitude != null && longitude != null )             {                 quake = new Earthquake()                 {                     Id = entry.Id,                     Title = entry.Title.Text,                     Summary = entry.Summary.Text,                     Date = entry.LastUpdatedTime.DateTime,                     Url = entry.Links.Select(l => Path.Combine(l.BaseUri.OriginalString,                         l.Uri.OriginalString)).FirstOrDefault(),                     Age = entry.Categories.Where(c => c.Label == "Age")                         .Select(c => c.Name).FirstOrDefault(),                     Magnitude = magnitude.GetValueOrDefault(),                     Latitude = latitude.GetValueOrDefault(),                     Longitude = longitude.GetValueOrDefault(),                     DepthInKm = depthKm.GetValueOrDefault(),                     DepthDesc = depthDesc,                     UtcTime = utcTime,                     LocalTime = localTime                 };             }               return quake;         }           private T GetElementValue<T>(SyndicationItem entry, String name)         {             var el = entry.ElementExtensions.Where(e => e.OuterName == name).FirstOrDefault();             T value = default(T);               if ( el != null )             {                 value = el.GetObject<T>();             }               return value;         }           private double? TryParse(String value)         {             double d;             if ( Double.TryParse(value, out d) )             {                 return d;             }             return null;         }           /// <summary>         /// Gets the feed at the specified URL.         /// </summary>         /// <param name="url">The URL.</param>         /// <returns>A <see cref="SyndicationFeed"/> object.</returns>         public static SyndicationFeed GetFeed(String url)         {             SyndicationFeed feed = null;               try             {                 log.Debug("Loading RSS feed: " + url);                   using ( var reader = XmlReader.Create(url) )                 {                     feed = SyndicationFeed.Load(reader);                 }             }             catch ( Exception ex )             {                 log.Error("Error occurred while loading RSS feed: " + url, ex);             }               return feed;         }     } }   The only method that will be generated in the client side proxy class, EarthquakeContext, will be the GetEarthquakes() method. The reason being that it is the only public instance method and it returns an IQueryable<Earthquake> collection that can be consumed by the client application. GetEarthquakes() calls the static GetFeed(String) method, which utilizes the built in SyndicationFeed API to load the external data feed. You will need to add a reference to the System.ServiceModel.Web library in order to take advantage of the RSS/Atom reader. The API will also allow you to create your own feeds to serve up in your applications. Model I have also created a Model folder and added a new class, Earthquake.cs. The Earthquake object will hold the various properties returned from the Atom feed. Here is a sample of the code for that class. Notice the [Key] attribute on the Id property, which is required by RIA Services to uniquely identify the entity. using System; using System.Collections.Generic; using System.Linq; using System.Runtime.Serialization; using System.ComponentModel.DataAnnotations;   namespace EarthquakeLocator.Web.Model {     /// <summary>     /// Represents an earthquake occurrence and related information.     /// </summary>     [DataContract]     public class Earthquake     {         /// <summary>         /// Gets or sets the id.         /// </summary>         /// <value>The id.</value>         [Key]         [DataMember]         public string Id { get; set; }           /// <summary>         /// Gets or sets the title.         /// </summary>         /// <value>The title.</value>         [DataMember]         public string Title { get; set; }           /// <summary>         /// Gets or sets the summary.         /// </summary>         /// <value>The summary.</value>         [DataMember]         public string Summary { get; set; }           // additional properties omitted     } }   View Model The recent trend to use the MVVM pattern for WPF and Silverlight provides a great way to separate the data and behavior logic out of the user interface layer of your client applications. I have chosen to use the MVVM Light Toolkit for the Earthquake Locator, but there are other options out there if you prefer another library. That said, I went ahead and created a ViewModel folder in the Silverlight project and added a EarthquakeViewModel class that derives from ViewModelBase. Here is the code: using System; using System.Collections.ObjectModel; using System.ComponentModel.Composition; using System.ComponentModel.Composition.Hosting; using Microsoft.Maps.MapControl; using GalaSoft.MvvmLight; using EarthquakeLocator.Web.Model; using EarthquakeLocator.Web.Services;   namespace EarthquakeLocator.ViewModel {     /// <summary>     /// Provides data for views displaying earthquake information.     /// </summary>     public class EarthquakeViewModel : ViewModelBase     {         [Import]         public EarthquakeContext Context;           /// <summary>         /// Initializes a new instance of the <see cref="EarthquakeViewModel"/> class.         /// </summary>         public EarthquakeViewModel()         {             var catalog = new AssemblyCatalog(GetType().Assembly);             var container = new CompositionContainer(catalog);             container.ComposeParts(this);             Initialize();         }           /// <summary>         /// Initializes a new instance of the <see cref="EarthquakeViewModel"/> class.         /// </summary>         /// <param name="context">The context.</param>         public EarthquakeViewModel(EarthquakeContext context)         {             Context = context;             Initialize();         }           private void Initialize()         {             MapCenter = new Location(20, -170);             ZoomLevel = 2;         }           #region Private Methods           private void OnAutoLoadDataChanged()         {             LoadEarthquakes();         }           private void LoadEarthquakes()         {             var query = Context.GetEarthquakesQuery();             Context.Earthquakes.Clear();               Context.Load(query, (op) =>             {                 if ( !op.HasError )                 {                     foreach ( var item in op.Entities )                     {                         Earthquakes.Add(item);                     }                 }             }, null);         }           #endregion Private Methods           #region Properties           private bool autoLoadData;         /// <summary>         /// Gets or sets a value indicating whether to auto load data.         /// </summary>         /// <value><c>true</c> if auto loading data; otherwise, <c>false</c>.</value>         public bool AutoLoadData         {             get { return autoLoadData; }             set             {                 if ( autoLoadData != value )                 {                     autoLoadData = value;                     RaisePropertyChanged("AutoLoadData");                     OnAutoLoadDataChanged();                 }             }         }           private ObservableCollection<Earthquake> earthquakes;         /// <summary>         /// Gets the collection of earthquakes to display.         /// </summary>         /// <value>The collection of earthquakes.</value>         public ObservableCollection<Earthquake> Earthquakes         {             get             {                 if ( earthquakes == null )                 {                     earthquakes = new ObservableCollection<Earthquake>();                 }                   return earthquakes;             }         }           private Location mapCenter;         /// <summary>         /// Gets or sets the map center.         /// </summary>         /// <value>The map center.</value>         public Location MapCenter         {             get { return mapCenter; }             set             {                 if ( mapCenter != value )                 {                     mapCenter = value;                     RaisePropertyChanged("MapCenter");                 }             }         }           private double zoomLevel;         /// <summary>         /// Gets or sets the zoom level.         /// </summary>         /// <value>The zoom level.</value>         public double ZoomLevel         {             get { return zoomLevel; }             set             {                 if ( zoomLevel != value )                 {                     zoomLevel = value;                     RaisePropertyChanged("ZoomLevel");                 }             }         }           #endregion Properties     } }   The EarthquakeViewModel class contains all of the properties that will be bound to by the various controls in our views. Be sure to read through the LoadEarthquakes() method, which handles calling the GetEarthquakes() method in our EarthquakeService via the EarthquakeContext proxy, and also transfers the loaded entities into the view model’s Earthquakes collection. Another thing to notice is what’s going on in the default constructor. I chose to use the Managed Extensibility Framework (MEF) for my composition needs, but you can use any dependency injection library or none at all. To allow the EarthquakeContext class to be discoverable by MEF, I added the following partial class so that I could supply the appropriate [Export] attribute: using System; using System.ComponentModel.Composition;   namespace EarthquakeLocator.Web.Services {     /// <summary>     /// The client side proxy for the EarthquakeService class.     /// </summary>     [Export]     public partial class EarthquakeContext     {     } }   One last piece I wanted to point out before moving on to the user interface, I added a client side partial class for the Earthquake entity that contains helper properties that we will bind to later: using System;   namespace EarthquakeLocator.Web.Model {     /// <summary>     /// Represents an earthquake occurrence and related information.     /// </summary>     public partial class Earthquake     {         /// <summary>         /// Gets the location based on the current Latitude/Longitude.         /// </summary>         /// <value>The location.</value>         public string Location         {             get { return String.Format("{0},{1}", Latitude, Longitude); }         }           /// <summary>         /// Gets the size based on the Magnitude.         /// </summary>         /// <value>The size.</value>         public double Size         {             get { return (Magnitude * 3); }         }     } }   View Now the fun part! Usually, I would create a Views folder to place all of my View controls in, but I took the easy way out and added the following XAML code to the default MainPage.xaml file. Be sure to add the bing prefix associating the Microsoft.Maps.MapControl namespace after adding the assembly reference to your project. The MVVM Light Toolkit project templates come with a ViewModelLocator class that you can use via a static resource, but I am instantiating the EarthquakeViewModel directly in my user control. I am setting the AutoLoadData property to true as a way to trigger the LoadEarthquakes() method call. The MapItemsControl found within the <bing:Map> control binds its ItemsSource property to the Earthquakes collection of the view model, and since it is an ObservableCollection<T>, we get the automatic two way data binding via the INotifyCollectionChanged interface. <UserControl x:Class="EarthquakeLocator.MainPage"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"     xmlns:bing="clr-namespace:Microsoft.Maps.MapControl;assembly=Microsoft.Maps.MapControl"     xmlns:vm="clr-namespace:EarthquakeLocator.ViewModel"     mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480" >     <UserControl.Resources>         <DataTemplate x:Key="EarthquakeTemplate">             <Ellipse Fill="Red" Stroke="Black" StrokeThickness="1"                      Width="{Binding Size}" Height="{Binding Size}"                      bing:MapLayer.Position="{Binding Location}"                      bing:MapLayer.PositionOrigin="Center">                 <ToolTipService.ToolTip>                     <StackPanel>                         <TextBlock Text="{Binding Title}" FontSize="14" FontWeight="Bold" />                         <TextBlock Text="{Binding UtcTime}" />                         <TextBlock Text="{Binding LocalTime}" />                         <TextBlock Text="{Binding DepthDesc}" />                     </StackPanel>                 </ToolTipService.ToolTip>             </Ellipse>         </DataTemplate>     </UserControl.Resources>       <UserControl.DataContext>         <vm:EarthquakeViewModel AutoLoadData="True" />     </UserControl.DataContext>       <Grid x:Name="LayoutRoot">           <bing:Map x:Name="map" CredentialsProvider="--Your-Bing-Maps-Key--"                   Center="{Binding MapCenter, Mode=TwoWay}"                   ZoomLevel="{Binding ZoomLevel, Mode=TwoWay}">             <bing:MapItemsControl ItemsSource="{Binding Earthquakes}"                                   ItemTemplate="{StaticResource EarthquakeTemplate}" />         </bing:Map>       </Grid> </UserControl>   The EarthquakeTemplate defines the Ellipse that will represent each earthquake, the Width and Height that are determined by the Magnitude, the Position on the map, and also the tooltip that will appear when we mouse over each data point. Running the application will give us the following result (shown with a tooltip example): That concludes this portion of our show but I plan on implementing additional functionality in later blog posts. Be sure to come back soon to see the next installments in this series. Enjoy!   Additional Resources USGS Earthquake Data Feeds Brad Abrams shows how RIA Services and MVVM can work together

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• Validating the SharePoint InputFormTextBox / RichText Editor using JavaScript

  - by Jignesh Gangajaliya

  In the previous post I mentioned about manipulating SharePoint PeoplePicker control using JavaScript, in this post I will explain how to validate the InputFormTextBox contol using JavaScript. Here is the nice post by Becky Isserman on why not to use RequiredFieldValdator or InputFormRequiredFieldValidator with InputFormTextbox. function ValidateComments() {     //retrieve the text from rich text editor.     var text = RTE_GetRichEditTextOnly("<%= rteComments.ClientID %>");     if (text != "")     {         return true;     }     else     {         alert('Please enter your comments.');         //set focus back to the rich text editor.         RTE_GiveEditorFocus("<%= rteComments.ClientID %>");         return false;     }     return true; } <SharePoint:InputFormTextBox ID="rteComments" runat="server" RichText="true" RichTextMode="Compatible" Rows="10" TextMode="MultiLine" CausesValidation="true" ></SharePoint:InputFormTextBox> <asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click" OnClientClick="return ValidateComments()" CausesValidation="true" /> - Jignesh

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• WatiN screenshot saver

  - by Brian Schroer

  In addition to my automated unit, system and integration tests for ASP.NET projects, I like to give my customers something pretty that they can look at and visually see that the web site is behaving properly. I use the Gallio test runner to produce a pretty HTML report, and WatiN (Web Application Testing In .NET) to test the UI and create screenshots. I have a couple of issues with WatiN’s “CaptureWebPageToFile” method, though: It blew up the first (and only) time I tried it, possibly because… It scrolls down to capture the entire web page (I tried it on a very long page), and I usually don’t need that Also, sometimes I don’t need a picture of the whole browser window - I just want a picture of the element that I'm testing (for example, proving that a button has the correct caption). I wrote a WatiN screenshot saver helper class with these methods: SaveBrowserWindowScreenshot(Watin.Core.IE ie)  / SaveBrowserWindowScreenshot(Watin.Core.Element element) saves a screenshot of the browser window SaveBrowserWindowScreenshotWithHighlight(Watin.Core.Element element) saves a screenshot of the browser window, with the specified element scrolled into view and highlighted SaveElementScreenshot(Watin.Core.Element element) saves a picture of only the specified element The element highlighting improves on the built-in WatiN method (which just gives the element a yellow background, and makes the element pretty much unreadable when you have a light foreground color) by adding the ability to specify a HighlightCssClassName that points to a style in your site’s stylesheet. This code is specifically for testing with Internet Explorer (‘cause that’s what I have to test with at work), but you’re welcome to take it and do with it what you want… using System; using System.Drawing; using System.Drawing.Imaging; using System.IO; using System.Reflection; using System.Runtime.InteropServices; using System.Text; using System.Threading; using SHDocVw; using WatiN.Core; using mshtml; namespace BrianSchroer.TestHelpers { public static class WatinScreenshotSaver { public static void SaveBrowserWindowScreenshotWithHighlight (Element element, string screenshotName) { HighlightElement(element, true); SaveBrowserWindowScreenshot(element, screenshotName); HighlightElement(element, false); } public static void SaveBrowserWindowScreenshotWithHighlight(Element element) { HighlightElement(element, true); SaveBrowserWindowScreenshot(element); HighlightElement(element, false); } public static void SaveBrowserWindowScreenshot(Element element, string screenshotName) { SaveScreenshot(GetIe(element), screenshotName, SaveBitmapForCallbackArgs); } public static void SaveBrowserWindowScreenshot(Element element) { SaveScreenshot(GetIe(element), null, SaveBitmapForCallbackArgs); } public static void SaveBrowserWindowScreenshot(IE ie, string screenshotName) { SaveScreenshot(ie, screenshotName, SaveBitmapForCallbackArgs); } public static void SaveBrowserWindowScreenshot(IE ie) { SaveScreenshot(ie, null, SaveBitmapForCallbackArgs); } public static void SaveElementScreenshot(Element element, string screenshotName) { // TODO: Figure out how to get browser window "chrome" size and not have to go to full screen: var iex = (InternetExplorerClass) GetIe(element).InternetExplorer; bool fullScreen = iex.FullScreen; if (!fullScreen) iex.FullScreen = true; ScrollIntoView(element); SaveScreenshot(GetIe(element), screenshotName, args => SaveElementBitmapForCallbackArgs(element, args)); iex.FullScreen = fullScreen; } public static void SaveElementScreenshot(Element element) { SaveElementScreenshot(element, null); } private static void SaveScreenshot(IE browser, string screenshotName, Action<ScreenshotCallbackArgs> screenshotCallback) { string fileName = string.Format("{0:000}{1}{2}.jpg", ++_screenshotCount, (string.IsNullOrEmpty(screenshotName)) ? "" : " ", screenshotName); string path = Path.Combine(ScreenshotDirectoryName, fileName); Console.WriteLine(); // Gallio HTML-encodes the following display, but I have a utility program to // remove the "HTML===" and "===HTML" and un-encode the rest to show images in the Gallio report: Console.WriteLine("HTML===<div><b>{0}:</br></b><img src=\"{1}\" /></div>===HTML", screenshotName, new Uri(path).AbsoluteUri); MakeBrowserWindowTopmost(browser); try { var args = new ScreenshotCallbackArgs { InternetExplorerClass = (InternetExplorerClass)browser.InternetExplorer, ScreenshotPath = path }; Thread.Sleep(100); screenshotCallback(args); } catch (Exception ex) { Console.WriteLine(ex.Message); } } public static void HighlightElement(Element element, bool doHighlight) { if (!element.Exists) return; if (string.IsNullOrEmpty(HighlightCssClassName)) { element.Highlight(doHighlight); return; } string jsRef = element.GetJavascriptElementReference(); if (string.IsNullOrEmpty(jsRef)) return; var sb = new StringBuilder("try { "); sb.AppendFormat(" {0}.scrollIntoView(false);", jsRef); string format = (doHighlight) ? "{0}.className += ' {1}'" : "{0}.className = {0}.className.replace(' {1}', '')"; sb.AppendFormat(" " + format + ";", jsRef, HighlightCssClassName); sb.Append("} catch(e) {}"); string script = sb.ToString(); GetIe(element).RunScript(script); } public static void ScrollIntoView(Element element) { string jsRef = element.GetJavascriptElementReference(); if (string.IsNullOrEmpty(jsRef)) return; var sb = new StringBuilder("try { "); sb.AppendFormat(" {0}.scrollIntoView(false);", jsRef); sb.Append("} catch(e) {}"); string script = sb.ToString(); GetIe(element).RunScript(script); } public static void MakeBrowserWindowTopmost(IE ie) { ie.BringToFront(); SetWindowPos(ie.hWnd, HWND_TOPMOST, 0, 0, 0, 0, TOPMOST_FLAGS); } public static string HighlightCssClassName { get; set; } private static int _screenshotCount; private static string _screenshotDirectoryName; public static string ScreenshotDirectoryName { get { if (_screenshotDirectoryName == null) { var asm = Assembly.GetAssembly(typeof(WatinScreenshotSaver)); var uri = new Uri(asm.CodeBase); var fileInfo = new FileInfo(uri.LocalPath); string directoryName = fileInfo.DirectoryName; _screenshotDirectoryName = Path.Combine( directoryName, string.Format("Screenshots_{0:yyyyMMddHHmm}", DateTime.Now)); Console.WriteLine("Screenshot folder: {0}", _screenshotDirectoryName); Directory.CreateDirectory(_screenshotDirectoryName); } return _screenshotDirectoryName; } set { _screenshotDirectoryName = value; _screenshotCount = 0; } } [DllImport("user32.dll")] [return: MarshalAs(UnmanagedType.Bool)] private static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags); private static readonly IntPtr HWND_TOPMOST = new IntPtr(-1); private const UInt32 SWP_NOSIZE = 0x0001; private const UInt32 SWP_NOMOVE = 0x0002; private const UInt32 TOPMOST_FLAGS = SWP_NOMOVE | SWP_NOSIZE; private static IE GetIe(Element element) { if (element == null) return null; var container = element.DomContainer; while (container as IE == null) container = container.DomContainer; return (IE)container; } private static void SaveBitmapForCallbackArgs(ScreenshotCallbackArgs args) { InternetExplorerClass iex = args.InternetExplorerClass; SaveBitmap(args.ScreenshotPath, iex.Left, iex.Top, iex.Width, iex.Height); } private static void SaveElementBitmapForCallbackArgs(Element element, ScreenshotCallbackArgs args) { InternetExplorerClass iex = args.InternetExplorerClass; Rectangle bounds = GetElementBounds(element); SaveBitmap(args.ScreenshotPath, iex.Left + bounds.Left, iex.Top + bounds.Top, bounds.Width, bounds.Height); } /// <summary> /// This method is used instead of element.NativeElement.GetElementBounds because that /// method has a bug (http://sourceforge.net/tracker/?func=detail&aid=2994660&group_id=167632&atid=843727). /// </summary> private static Rectangle GetElementBounds(Element element) { var ieElem = element.NativeElement as WatiN.Core.Native.InternetExplorer.IEElement; IHTMLElement elem = ieElem.AsHtmlElement; int left = elem.offsetLeft; int top = elem.offsetTop; for (IHTMLElement parent = elem.offsetParent; parent != null; parent = parent.offsetParent) { left += parent.offsetLeft; top += parent.offsetTop; } return new Rectangle(left, top, elem.offsetWidth, elem.offsetHeight); } private static void SaveBitmap(string path, int left, int top, int width, int height) { using (var bitmap = new Bitmap(width, height)) { using (Graphics g = Graphics.FromImage(bitmap)) { g.CopyFromScreen( new Point(left, top), Point.Empty, new Size(width, height) ); } bitmap.Save(path, ImageFormat.Jpeg); } } private class ScreenshotCallbackArgs { public InternetExplorerClass InternetExplorerClass { get; set; } public string ScreenshotPath { get; set; } } } }

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• Creating a dynamic proxy generator with c# – Part 3 – Creating the constructors

  - by SeanMcAlinden

  Creating a dynamic proxy generator with c# – Part 1 – Creating the Assembly builder, Module builder and caching mechanism Creating a dynamic proxy generator with c# – Part 2 – Interceptor Design For the latest code go to http://rapidioc.codeplex.com/ When building our proxy type, the first thing we need to do is build the constructors. There needs to be a corresponding constructor for each constructor on the passed in base type. We also want to create a field to store the interceptors and construct this list within each constructor. So assuming the passed in base type is a User<int, IRepository> class, were looking to generate constructor code like the following:   Default Constructor public User`2_RapidDynamicBaseProxy() {     this.interceptors = new List<IInterceptor<User<int, IRepository>>>();     DefaultInterceptor<User<int, IRepository>> item = new DefaultInterceptor<User<int, IRepository>>();     this.interceptors.Add(item); }     Parameterised Constructor public User`2_RapidDynamicBaseProxy(IRepository repository1) : base(repository1) {     this.interceptors = new List<IInterceptor<User<int, IRepository>>>();     DefaultInterceptor<User<int, IRepository>> item = new DefaultInterceptor<User<int, IRepository>>();     this.interceptors.Add(item); }   As you can see, we first populate a field on the class with a new list of the passed in base type. Construct our DefaultInterceptor class. Add the DefaultInterceptor instance to our interceptor collection. Although this seems like a relatively small task, there is a fair amount of work require to get this going. Instead of going through every line of code – please download the latest from http://rapidioc.codeplex.com/ and debug through. In this post I’m going to concentrate on explaining how it works. TypeBuilder The TypeBuilder class is the main class used to create the type. You instantiate a new TypeBuilder using the assembly module we created in part 1. /// <summary> /// Creates a type builder. /// </summary> /// <typeparam name="TBase">The type of the base class to be proxied.</typeparam> public static TypeBuilder CreateTypeBuilder<TBase>() where TBase : class {     TypeBuilder typeBuilder = DynamicModuleCache.Get.DefineType         (             CreateTypeName<TBase>(),             TypeAttributes.Class | TypeAttributes.Public,             typeof(TBase),             new Type[] { typeof(IProxy) }         );       if (typeof(TBase).IsGenericType)     {         GenericsHelper.MakeGenericType(typeof(TBase), typeBuilder);     }       return typeBuilder; }   private static string CreateTypeName<TBase>() where TBase : class {     return string.Format("{0}_RapidDynamicBaseProxy", typeof(TBase).Name); } As you can see, I’ve create a new public class derived from TBase which also implements my IProxy interface, this is used later for adding interceptors. If the base type is generic, the following GenericsHelper.MakeGenericType method is called. GenericsHelper using System; using System.Reflection.Emit; namespace Rapid.DynamicProxy.Types.Helpers {     /// <summary>     /// Helper class for generic types and methods.     /// </summary>     internal static class GenericsHelper     {         /// <summary>         /// Makes the typeBuilder a generic.         /// </summary>         /// <param name="concrete">The concrete.</param>         /// <param name="typeBuilder">The type builder.</param>         public static void MakeGenericType(Type baseType, TypeBuilder typeBuilder)         {             Type[] genericArguments = baseType.GetGenericArguments();               string[] genericArgumentNames = GetArgumentNames(genericArguments);               GenericTypeParameterBuilder[] genericTypeParameterBuilder                 = typeBuilder.DefineGenericParameters(genericArgumentNames);               typeBuilder.MakeGenericType(genericTypeParameterBuilder);         }           /// <summary>         /// Gets the argument names from an array of generic argument types.         /// </summary>         /// <param name="genericArguments">The generic arguments.</param>         public static string[] GetArgumentNames(Type[] genericArguments)         {             string[] genericArgumentNames = new string[genericArguments.Length];               for (int i = 0; i < genericArguments.Length; i++)             {                 genericArgumentNames[i] = genericArguments[i].Name;             }               return genericArgumentNames;         }     } }       As you can see, I’m getting all of the generic argument types and names, creating a GenericTypeParameterBuilder and then using the typeBuilder to make the new type generic. InterceptorsField The interceptors field will store a List<IInterceptor<TBase>>. Fields are simple made using the FieldBuilder class. The following code demonstrates how to create the interceptor field. FieldBuilder interceptorsField = typeBuilder.DefineField(     "interceptors",     typeof(System.Collections.Generic.List<>).MakeGenericType(typeof(IInterceptor<TBase>)),       FieldAttributes.Private     ); The field will now exist with the new Type although it currently has no data – we’ll deal with this in the constructor. Add method for interceptorsField To enable us to add to the interceptorsField list, we are going to utilise the Add method that already exists within the System.Collections.Generic.List class. We still however have to create the methodInfo necessary to call the add method. This can be done similar to the following: Add Interceptor Field MethodInfo addInterceptor = typeof(List<>)     .MakeGenericType(new Type[] { typeof(IInterceptor<>).MakeGenericType(typeof(TBase)) })     .GetMethod     (        "Add",        BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic,        null,        new Type[] { typeof(IInterceptor<>).MakeGenericType(typeof(TBase)) },        null     ); So we’ve create a List<IInterceptor<TBase>> type, then using the type created a method info called Add which accepts an IInterceptor<TBase>. Now in our constructor we can use this to call this.interceptors.Add(// interceptor); Building the Constructors This will be the first hard-core part of the proxy building process so I’m going to show the class and then try to explain what everything is doing. For a clear view, download the source from http://rapidioc.codeplex.com/, go to the test project and debug through the constructor building section. Anyway, here it is: DynamicConstructorBuilder using System; using System.Collections.Generic; using System.Reflection; using System.Reflection.Emit; using Rapid.DynamicProxy.Interception; using Rapid.DynamicProxy.Types.Helpers; namespace Rapid.DynamicProxy.Types.Constructors {     /// <summary>     /// Class for creating the proxy constructors.     /// </summary>     internal static class DynamicConstructorBuilder     {         /// <summary>         /// Builds the constructors.         /// </summary>         /// <typeparam name="TBase">The base type.</typeparam>         /// <param name="typeBuilder">The type builder.</param>         /// <param name="interceptorsField">The interceptors field.</param>         public static void BuildConstructors<TBase>             (                 TypeBuilder typeBuilder,                 FieldBuilder interceptorsField,                 MethodInfo addInterceptor             )             where TBase : class         {             ConstructorInfo interceptorsFieldConstructor = CreateInterceptorsFieldConstructor<TBase>();               ConstructorInfo defaultInterceptorConstructor = CreateDefaultInterceptorConstructor<TBase>();               ConstructorInfo[] constructors = typeof(TBase).GetConstructors();               foreach (ConstructorInfo constructorInfo in constructors)             {                 CreateConstructor<TBase>                     (                         typeBuilder,                         interceptorsField,                         interceptorsFieldConstructor,                         defaultInterceptorConstructor,                         addInterceptor,                         constructorInfo                     );             }         }           #region Private Methods           private static void CreateConstructor<TBase>             (                 TypeBuilder typeBuilder,                 FieldBuilder interceptorsField,                 ConstructorInfo interceptorsFieldConstructor,                 ConstructorInfo defaultInterceptorConstructor,                 MethodInfo AddDefaultInterceptor,                 ConstructorInfo constructorInfo             ) where TBase : class         {             Type[] parameterTypes = GetParameterTypes(constructorInfo);               ConstructorBuilder constructorBuilder = CreateConstructorBuilder(typeBuilder, parameterTypes);               ILGenerator cIL = constructorBuilder.GetILGenerator();               LocalBuilder defaultInterceptorMethodVariable =                 cIL.DeclareLocal(typeof(DefaultInterceptor<>).MakeGenericType(typeof(TBase)));               ConstructInterceptorsField(interceptorsField, interceptorsFieldConstructor, cIL);               ConstructDefaultInterceptor(defaultInterceptorConstructor, cIL, defaultInterceptorMethodVariable);               AddDefaultInterceptorToInterceptorsList                 (                     interceptorsField,                     AddDefaultInterceptor,                     cIL,                     defaultInterceptorMethodVariable                 );               CreateConstructor(constructorInfo, parameterTypes, cIL);         }           private static void CreateConstructor(ConstructorInfo constructorInfo, Type[] parameterTypes, ILGenerator cIL)         {             cIL.Emit(OpCodes.Ldarg_0);               if (parameterTypes.Length > 0)             {                 LoadParameterTypes(parameterTypes, cIL);             }               cIL.Emit(OpCodes.Call, constructorInfo);             cIL.Emit(OpCodes.Ret);         }           private static void LoadParameterTypes(Type[] parameterTypes, ILGenerator cIL)         {             for (int i = 1; i <= parameterTypes.Length; i++)             {                 cIL.Emit(OpCodes.Ldarg_S, i);             }         }           private static void AddDefaultInterceptorToInterceptorsList             (                 FieldBuilder interceptorsField,                 MethodInfo AddDefaultInterceptor,                 ILGenerator cIL,                 LocalBuilder defaultInterceptorMethodVariable             )         {             cIL.Emit(OpCodes.Ldarg_0);             cIL.Emit(OpCodes.Ldfld, interceptorsField);             cIL.Emit(OpCodes.Ldloc, defaultInterceptorMethodVariable);             cIL.Emit(OpCodes.Callvirt, AddDefaultInterceptor);         }           private static void ConstructDefaultInterceptor             (                 ConstructorInfo defaultInterceptorConstructor,                 ILGenerator cIL,                 LocalBuilder defaultInterceptorMethodVariable             )         {             cIL.Emit(OpCodes.Newobj, defaultInterceptorConstructor);             cIL.Emit(OpCodes.Stloc, defaultInterceptorMethodVariable);         }           private static void ConstructInterceptorsField             (                 FieldBuilder interceptorsField,                 ConstructorInfo interceptorsFieldConstructor,                 ILGenerator cIL             )         {             cIL.Emit(OpCodes.Ldarg_0);             cIL.Emit(OpCodes.Newobj, interceptorsFieldConstructor);             cIL.Emit(OpCodes.Stfld, interceptorsField);         }           private static ConstructorBuilder CreateConstructorBuilder(TypeBuilder typeBuilder, Type[] parameterTypes)         {             return typeBuilder.DefineConstructor                 (                     MethodAttributes.Public | MethodAttributes.SpecialName | MethodAttributes.RTSpecialName                     | MethodAttributes.HideBySig, CallingConventions.Standard, parameterTypes                 );         }           private static Type[] GetParameterTypes(ConstructorInfo constructorInfo)         {             ParameterInfo[] parameterInfoArray = constructorInfo.GetParameters();               Type[] parameterTypes = new Type[parameterInfoArray.Length];               for (int p = 0; p < parameterInfoArray.Length; p++)             {                 parameterTypes[p] = parameterInfoArray[p].ParameterType;             }               return parameterTypes;         }           private static ConstructorInfo CreateInterceptorsFieldConstructor<TBase>() where TBase : class         {             return ConstructorHelper.CreateGenericConstructorInfo                 (                     typeof(List<>),                     new Type[] { typeof(IInterceptor<TBase>) },                     BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic                 );         }           private static ConstructorInfo CreateDefaultInterceptorConstructor<TBase>() where TBase : class         {             return ConstructorHelper.CreateGenericConstructorInfo                 (                     typeof(DefaultInterceptor<>),                     new Type[] { typeof(TBase) },                     BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic                 );         }           #endregion     } } So, the first two tasks within the class should be fairly clear, we are creating a ConstructorInfo for the interceptorField list and a ConstructorInfo for the DefaultConstructor, this is for instantiating them in each contructor. We then using Reflection get an array of all of the constructors in the base class, we then loop through the array and create a corresponding proxy contructor. Hopefully, the code is fairly easy to follow other than some new types and the dreaded Opcodes. ConstructorBuilder This class defines a new constructor on the type. ILGenerator The ILGenerator allows the use of Reflection.Emit to create the method body. LocalBuilder The local builder allows the storage of data in local variables within a method, in this case it’s the constructed DefaultInterceptor. Constructing the interceptors field The first bit of IL you’ll come across as you follow through the code is the following private method used for constructing the field list of interceptors. private static void ConstructInterceptorsField             (                 FieldBuilder interceptorsField,                 ConstructorInfo interceptorsFieldConstructor,                 ILGenerator cIL             )         {             cIL.Emit(OpCodes.Ldarg_0);             cIL.Emit(OpCodes.Newobj, interceptorsFieldConstructor);             cIL.Emit(OpCodes.Stfld, interceptorsField);         } The first thing to know about generating code using IL is that you are using a stack, if you want to use something, you need to push it up the stack etc. etc. OpCodes.ldArg_0 This opcode is a really interesting one, basically each method has a hidden first argument of the containing class instance (apart from static classes), constructors are no different. This is the reason you can use syntax like this.myField. So back to the method, as we want to instantiate the List in the interceptorsField, first we need to load the class instance onto the stack, we then load the new object (new List<TBase>) and finally we store it in the interceptorsField. Hopefully, that should follow easily enough in the method. In each constructor you would now have this.interceptors = new List<User<int, IRepository>>(); Constructing and storing the DefaultInterceptor The next bit of code we need to create is the constructed DefaultInterceptor. Firstly, we create a local builder to store the constructed type. Create a local builder LocalBuilder defaultInterceptorMethodVariable =     cIL.DeclareLocal(typeof(DefaultInterceptor<>).MakeGenericType(typeof(TBase))); Once our local builder is ready, we then need to construct the DefaultInterceptor<TBase> and store it in the variable. Connstruct DefaultInterceptor private static void ConstructDefaultInterceptor     (         ConstructorInfo defaultInterceptorConstructor,         ILGenerator cIL,         LocalBuilder defaultInterceptorMethodVariable     ) {     cIL.Emit(OpCodes.Newobj, defaultInterceptorConstructor);     cIL.Emit(OpCodes.Stloc, defaultInterceptorMethodVariable); } As you can see, using the ConstructorInfo named defaultInterceptorConstructor, we load the new object onto the stack. Then using the store local opcode (OpCodes.Stloc), we store the new object in the local builder named defaultInterceptorMethodVariable. Add the constructed DefaultInterceptor to the interceptors field collection Using the add method created earlier in this post, we are going to add the new DefaultInterceptor object to the interceptors field collection. Add Default Interceptor private static void AddDefaultInterceptorToInterceptorsList     (         FieldBuilder interceptorsField,         MethodInfo AddDefaultInterceptor,         ILGenerator cIL,         LocalBuilder defaultInterceptorMethodVariable     ) {     cIL.Emit(OpCodes.Ldarg_0);     cIL.Emit(OpCodes.Ldfld, interceptorsField);     cIL.Emit(OpCodes.Ldloc, defaultInterceptorMethodVariable);     cIL.Emit(OpCodes.Callvirt, AddDefaultInterceptor); } So, here’s whats going on. The class instance is first loaded onto the stack using the load argument at index 0 opcode (OpCodes.Ldarg_0) (remember the first arg is the hidden class instance). The interceptorsField is then loaded onto the stack using the load field opcode (OpCodes.Ldfld). We then load the DefaultInterceptor object we stored locally using the load local opcode (OpCodes.Ldloc). Then finally we call the AddDefaultInterceptor method using the call virtual opcode (Opcodes.Callvirt). Completing the constructor The last thing we need to do is complete the constructor. Complete the constructor private static void CreateConstructor(ConstructorInfo constructorInfo, Type[] parameterTypes, ILGenerator cIL)         {             cIL.Emit(OpCodes.Ldarg_0);               if (parameterTypes.Length > 0)             {                 LoadParameterTypes(parameterTypes, cIL);             }               cIL.Emit(OpCodes.Call, constructorInfo);             cIL.Emit(OpCodes.Ret);         }           private static void LoadParameterTypes(Type[] parameterTypes, ILGenerator cIL)         {             for (int i = 1; i <= parameterTypes.Length; i++)             {                 cIL.Emit(OpCodes.Ldarg_S, i);             }         } So, the first thing we do again is load the class instance using the load argument at index 0 opcode (OpCodes.Ldarg_0). We then load each parameter using OpCode.Ldarg_S, this opcode allows us to specify an index position for each argument. We then setup calling the base constructor using OpCodes.Call and the base constructors ConstructorInfo. Finally, all methods are required to return, even when they have a void return. As there are no values on the stack after the OpCodes.Call line, we can safely call the OpCode.Ret to give the constructor a void return. If there was a value, we would have to pop the value of the stack before calling return otherwise, the method would try and return a value. Conclusion This was a slightly hardcore post but hopefully it hasn’t been too hard to follow. The main thing is that a number of the really useful opcodes have been used and now the dynamic proxy is capable of being constructed. If you download the code and debug through the tests at http://rapidioc.codeplex.com/, you’ll be able to create proxies at this point, they cannon do anything in terms of interception but you can happily run the tests, call base methods and properties and also take a look at the created assembly in Reflector. Hope this is useful. The next post should be up soon, it will be covering creating the private methods for calling the base class methods and properties. Kind Regards, Sean.

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• Loading a Template From a User Control

  - by Ricardo Peres

  What if you wanted to load a template (ITemplate property) from an external user control (.ascx) file? Yes, it is possible; there are a number of ways to do this, the one I'll talk about here is through a type converter. You need to apply a TypeConverterAttribute to your ITemplate property where you specify a custom type converter that does the job. This type converter relies on InstanceDescriptor. Here is the code for it: public class TemplateTypeConverter: TypeConverter { public override Boolean CanConvertFrom(ITypeDescriptorContext context, Type sourceType) { return ((sourceType == typeof(String)) || (base.CanConvertFrom(context, sourceType) == true)); } public override Boolean CanConvertTo(ITypeDescriptorContext context, Type destinationType) { return ((destinationType == typeof(InstanceDescriptor)) || (base.CanConvertTo(context, destinationType) == true)); } public override Object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, Object value, Type destinationType) { if (destinationType == typeof(InstanceDescriptor)) { Object objectFactory = value.GetType().GetField("_objectFactory", BindingFlags.NonPublic | BindingFlags.Instance).GetValue(value); Object builtType = objectFactory.GetType().BaseType.GetField("_builtType", BindingFlags.NonPublic | BindingFlags.Instance).GetValue(objectFactory); MethodInfo loadTemplate = typeof(TemplateTypeConverter).GetMethod("LoadTemplate"); return (new InstanceDescriptor(loadTemplate, new Object [] { "~/" + (builtType as Type).Name.Replace('_', '/').Replace("/ascx", ".ascx") })); } return base.ConvertTo(context, culture, value, destinationType); } public static ITemplate LoadTemplate(String virtualPath) { using (Page page = new Page()) { return (page.LoadTemplate(virtualPath)); } } } And, on your control: public class MyControl: Control { [Browsable(false)] [TypeConverter(typeof(TemplateTypeConverter))] public ITemplate Template { get; set; } } This allows the following declaration: Hope this helps! SyntaxHighlighter.config.clipboardSwf = 'http://alexgorbatchev.com/pub/sh/2.0.320/scripts/clipboard.swf'; SyntaxHighlighter.brushes.CSharp.aliases = ['c#', 'c-sharp', 'csharp']; SyntaxHighlighter.brushes.Xml.aliases = ['xml']; SyntaxHighlighter.all();

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• Returning Identity Value in SQL Server: @@IDENTITY Vs SCOPE_IDENTITY Vs IDENT_CURRENT

  - by Arefin Ali

  We have some common misconceptions on returning the last inserted identity value from tables. To return the last inserted identity value we have options to use @@IDENTITY or SCOPE_IDENTITY or IDENT_CURRENT function depending on the requirement but it will be a real mess if anybody uses anyone of these functions without knowing exact purpose. So here I want to share my thoughts on this. @@IDENTITY, SCOPE_IDENTITY and IDENT_CURRENT are almost similar functions in terms of returning identity value. They all return values that are inserted into an identity column. Earlier in SQL Server 7 we used to use @@IDENTITY to return the last inserted identity value because those days we don’t have functions like SCOPE_IDENTITY or IDENT_CURRENT but now we have these three functions. So let’s check out which one responsible for what. IDENT_CURRENT returns the last inserted identity value in a particular table. It never depends on a connection or the scope of the insert statement. IDENT_CURRENT function takes a table name as parameter. Here is the syntax to get the last inserted identity value in a particular table using IDENT_CURRENT function. SELECT IDENT_CURRENT('Employee') Both the @@IDENTITY and SCOPE_IDENTITY return the last inserted identity value created in any table in the current session. But there is little difference between these two i.e. SCOPE_IDENTITY returns value inserted only within the current scope whereas @@IDENTITY is not limited to any particular scope. Here are the syntaxes to get the last inserted identity value using these functions SELECT @@IDENTITY SELECT SCOPE_IDENTITY() Now let’s have a look at the following example. Suppose I have two tables called Employee and EmployeeLog. CREATE TABLE Employee ( EmpId NUMERIC(18, 0) IDENTITY(1,1) NOT NULL, EmpName VARCHAR(100) NOT NULL, EmpSal FLOAT NOT NULL, DateOfJoining DATETIME NOT NULL DEFAULT(GETDATE()) ) CREATE TABLE EmployeeLog ( EmpId NUMERIC(18, 0) IDENTITY(1,1) NOT NULL, EmpName VARCHAR(100) NOT NULL, EmpSal FLOAT NOT NULL, DateOfJoining DATETIME NOT NULL DEFAULT(GETDATE()) ) I have an insert trigger defined on the table Employee which inserts a new record in the EmployeeLog whenever a record insert in the Employee table. So Suppose I insert a new record in the Employee table using following statement: INSERT INTO Employee (EmpName,EmpSal) VALUES ('Arefin','1') The trigger will be fired automatically and insert a record in EmployeeLog. Here the scope of the insert statement and the trigger are different. In this situation if I retrieve last inserted identity value using @@IDENTITY, it will simply return the identity value from the EmployeeLog because it’s not limited to a particular scope. Now if I want to get the Employee table’s identity value then I need to use SCOPE_IDENTITY in this scenario. So the moral is always use SCOPE_IDENTITY to return the identity value of a recently created record in a sql statement or stored procedure. It’s safe and ensures bug free code.

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• Returning Identity Value in SQL Server: @@IDENTITY Vs SCOPE_IDENTITY Vs IDENT_CURRENT

  - by Arefin Ali

  We have some common misconceptions on returning the last inserted identity value from tables. To return the last inserted identity value we have options to use @@IDENTITY or SCOPE_IDENTITY or IDENT_CURRENT function depending on the requirement but it will be a real mess if anybody uses anyone of these functions without knowing exact purpose. So here I want to share my thoughts on this. @@IDENTITY, SCOPE_IDENTITY and IDENT_CURRENT are almost similar functions in terms of returning identity value. They all return values that are inserted into an identity column. Earlier in SQL Server 7 we used to use @@IDENTITY to return the last inserted identity value because those days we don’t have functions like SCOPE_IDENTITY or IDENT_CURRENT but now we have these three functions. So let’s check out which one responsible for what. IDENT_CURRENT returns the last inserted identity value in a particular table. It never depends on a connection or the scope of the insert statement. IDENT_CURRENT function takes a table name as parameter. Here is the syntax to get the last inserted identity value in a particular table using IDENT_CURRENT function. SELECT IDENT_CURRENT('Employee') Both the @@IDENTITY and SCOPE_IDENTITY return the last inserted identity value created in any table in the current session. But there is little difference between these two i.e. SCOPE_IDENTITY returns value inserted only within the current scope whereas @@IDENTITY is not limited to any particular scope. Here are the syntaxes to get the last inserted identity value using these functions SELECT @@IDENTITYSELECT SCOPE_IDENTITY() Now let’s have a look at the following example. Suppose I have two tables called Employee and EmployeeLog. CREATE TABLE Employee( EmpId NUMERIC(18, 0) IDENTITY(1,1) NOT NULL, EmpName VARCHAR(100) NOT NULL, EmpSal FLOAT NOT NULL, DateOfJoining DATETIME NOT NULL DEFAULT(GETDATE()))CREATE TABLE EmployeeLog( EmpId NUMERIC(18, 0) IDENTITY(1,1) NOT NULL, EmpName VARCHAR(100) NOT NULL, EmpSal FLOAT NOT NULL, DateOfJoining DATETIME NOT NULL DEFAULT(GETDATE())) I have an insert trigger defined on the table Employee which inserts a new record in the EmployeeLog whenever a record insert in the Employee table. So Suppose I insert a new record in the Employee table using following statement: INSERT INTO Employee (EmpName,EmpSal) VALUES ('Arefin','1') The trigger will be fired automatically and insert a record in EmployeeLog. Here the scope of the insert statement and the trigger are different. In this situation if I retrieve last inserted identity value using @@IDENTITY, it will simply return the identity value from the EmployeeLog because it’s not limited to a particular scope. Now if I want to get the Employee table’s identity value then I need to use SCOPE_IDENTITY in this scenario. So the moral is always use SCOPE_IDENTITY to return the identity value of a recently created record in a sql statement or stored procedure. It’s safe and ensures bug free code.

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• Figuring out the IIS Version for a given OS in .NET Code

  - by Rick Strahl

  Here's an odd requirement: I need to figure out what version of IIS is available on a given machine in order to take specific configuration actions when installing an IIS based application. I build several configuration tools for application configuration and installation and depending on which version of IIS is available on IIS different configuration paths are taken. For example, when dealing with XP machine you can't set up an Application Pool for an application because XP (IIS 5.1) didn't support Application pools. Configuring 32 and 64 bit settings are easy in IIS 7 but this didn't work in prior versions and so on. Along the same lines I saw a question on the AspInsiders list today, regarding a similar issue where somebody needed to know the IIS version as part of an ASP.NET application prior to when the Request object is available. So it's useful to know which version of IIS you can possibly expect. This should be easy right? But it turns there's no real easy way to detect IIS on a machine. There's no registry key that gives you the full version number - you can detect installation but not which version is installed. The easiest way: Request.ServerVariables["SERVER_SOFTWARE"] The easiest way to determine IIS version number is if you are already running inside of ASP.NET and you are inside of an ASP.NET request. You can look at Request.ServerVariables["SERVER_SOFTWARE"] to get a string like Microsoft-IIS/7.5 returned to you. It's a cinch to parse this to retrieve the version number. This works in the limited scenario where you need to know the version number inside of a running ASP.NET application. Unfortunately this is not a likely use case, since most times when you need to know a specific version of IIS when you are configuring or installing your application. The messy way: Match Windows OS Versions to IIS Versions Since Version 5.x of IIS versions of IIS have always been tied very closely to the Operating System. Meaning the only way to get a specific version of IIS was through the OS - you couldn't install another version of IIS on the given OS. Microsoft has a page that describes the OS version to IIS version relationship here: http://support.microsoft.com/kb/224609 In .NET you can then sniff the OS version and based on that return the IIS version. The following is a small utility function that accomplishes the task of returning an IIS version number for a given OS: /// <summary> /// Returns the IIS version for the given Operating System. /// Note this routine doesn't check to see if IIS is installed /// it just returns the version of IIS that should run on the OS. /// /// Returns the value from Request.ServerVariables["Server_Software"] /// if available. Otherwise uses OS sniffing to determine OS version /// and returns IIS version instead. /// </summary> /// <returns>version number or -1 </returns> public static decimal GetIisVersion() { // if running inside of IIS parse the SERVER_SOFTWARE key // This would be most reliable if (HttpContext.Current != null && HttpContext.Current.Request != null) { string os = HttpContext.Current.Request.ServerVariables["SERVER_SOFTWARE"]; if (!string.IsNullOrEmpty(os)) { //Microsoft-IIS/7.5 int dash = os.LastIndexOf("/"); if (dash > 0) { decimal iisVer = 0M; if (Decimal.TryParse(os.Substring(dash + 1), out iisVer)) return iisVer; } } } decimal osVer = (decimal) Environment.OSVersion.Version.Major + ((decimal) Environment.OSVersion.Version.MajorRevision / 10); // Windows 7 and Win2008 R2 if (osVer == 6.1M) return 7.5M; // Windows Vista and Windows 2008 else if (osVer == 6.0M) return 7.0M; // Windows 2003 and XP 64 bit else if (osVer == 5.2M) return 6.0M; // Windows XP else if (osVer == 5.1M) return 5.1M; // Windows 2000 else if (osVer == 5.0M) return 5.0M; // error result return -1M; } } Talk about a brute force apporach, but it works. This code goes only back to IIS 5 - anything before that is not something you possibly would want to have running. :-) Note that this is updated through Windows 7/Windows Server 2008 R2. Later versions will need to be added as needed. Anybody know what the Windows Version number of Windows 8 is?© Rick Strahl, West Wind Technologies, 2005-2011Posted in ASP.NET  IIS   Tweet (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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• Check Your LIC Policy Status Through SMS

  - by Suganya

  Most of us in India hold at least one Life Insurance Policy today. While we all know everything gets computerized these days, LIC also supports payment via internet. You can view details about how payment is made through internet here. Few years back LIC started supporting SMS’es as well. Now you really don’t need to have internet rather check your LIC policy status while on road by sending just one SMS to 56677. Now that we know LIC answers to our SMS, lets see the format in which we have to send our SMS and their meaning. The format in which the SMS has to be sent is ASKLIC <Policy No> [PREMIUM/REVIVAL/BONUS/LOAN/NOM] Send any one of the following [PREMIUM/REVIVAL/BONUS/LOAN/NOM] to get the details. For instance, If you send ASKLIC <Policy No> Premium , it would return your Installment premium under policy ASKLIC <Policy No> Revival , it would check If policy is lapsed and return revival amount payable ASKLIC <Policy No> Bonus , it would check and return the amount of Bonus invested ASKLIC <Policy No> Loan , it would check and return the amount available as Loan ASKLIC <Policy No> NOM , it would check and return the details of Nomination Also, as everyone knows there are lots of pension schemes as well available in LIC and if one is interested in getting the pension details, then the format for sending the SMS is LICPension <Policy No> [STAT /ECDUE/ANNPD/PDTHRU/AMOUNT/CHQRET] For instance, If you send LICPension <Policy No> STAT gives you the IPP Policy status details LICPension <Policy No> ECDUE gives you the existence certificate due details LICPension <Policy No> ANNPD gives you the last annuity released date LICPension <Policy No> CHQ/ECS/NEFT (PDTHRU) gives the details about annuity payment through LICPension <Policy No> AMOUNT gives details about annuity amount LICPension <Policy No> CHQRET gives details about cheque return information Just with one SMS get all your policy details and make life easier. Each SMS that you send would be charged depending on your service provider. This article titled,Check Your LIC Policy Status Through SMS, was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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• SQL SERVER – Validating Spatial Object as NULL using IsNULL

  - by pinaldave

  Follow up questions are the most fun part of writing a blog post. Earlier I wrote about SQL SERVER – Validating Spatial Object with IsValidDetailed Function and today I received a follow up question on the same subject. The question was mainly about how NULL is handled by spatial functions. Well, NULL is NULL. It is very easy to work with NULL. There are two different ways to validate if the passed in the value is NULL or not. 1) Using IsNULL Function IsNULL function validates if the object is null or not, if object is not null it will return you value 0 and if object is NULL it will return you the value NULL. DECLARE @p GEOMETRY = 'Polygon((2 2, 3 3, 4 4, 5 5, 6 6, 2 2))' SELECT @p.ISNULL ObjIsNull GO DECLARE @p GEOMETRY = NULL SELECT @p.ISNULL ObjIsNull GO 2) Using IsValidDetailed Function IsValidateDetails function validates if the object is valid or not. If the object is valid it will return 24400: Valid but if the object is not valid it will give message with the error number. In case object is NULL it will return the value as NULL. DECLARE @p GEOMETRY = 'Polygon((2 2, 3 3, 4 4, 5 5, 6 6, 2 2))' SELECT @p.IsValidDetailed() IsValid GO DECLARE @p GEOMETRY = NULL SELECT @p.IsValidDetailed() IsValid GO When to use what? Now you can see that there are two different ways to validate the NULL values. I personally have no preference about using one over another. However, there is one clear difference between them. In case of the IsValidDetailed Function the return value is nvarchar(max) and it is not always possible to compare the value with nvarchar(max). Whereas the ISNULL function returns the bit value of 0 when the object is null and it is easy to determine if the object is null or not in the case of ISNULL function. Additionally, ISNULL function does not check if the object is valid or not and will return the value 0 if the object is not NULL. Now you know even though either of the function can be used in place of each other both have very specific use case. Use the one which fits your business case. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Function, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology Tagged: Spatial Database, SQL Spatial

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• Upgraded Linux, now CMS Made Simple is spewing errors

  - by Paul Tomblin

  I upgraded my host from Debian Lenny to Debian Squeeze, and now my CMS Made Simple site is spewing PHP errors all over the screen. I thought I'd upgrade the CMS because I haven't done so in a while, but Google Chrome tells me that the CMS Made Simple site is infested with malware. What are my options now? Example errors: Deprecated: Assigning the return value of new by reference is deprecated in /www/danmurn/cms/include.php on line 73 Deprecated: Assigning the return value of new by reference is deprecated in /www/danmurn/cms/include.php on line 162 Deprecated: Assigning the return value of new by reference is deprecated in /www/danmurn/cms/include.php on line 240 Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /www/danmurn/cms/include.php:73) in /www/danmurn/cms/include.php on line 34 Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /www/danmurn/cms/include.php:73) in /www/danmurn/cms/include.php on line 34 Deprecated: Function set_magic_quotes_runtime() is deprecated in /www/danmurn/cms/include.php on line 62 Deprecated: Assigning the return value of new by reference is deprecated in /www/danmurn/cms/lib/classes/class.global.inc.php on line 184 Deprecated: Assigning the return value of new by reference is deprecated in /www/danmurn/cms/lib/classes/class.global.inc.php on line 196

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• A Reusable Builder Class for Javascript Testing

  - by Liam McLennan

  Continuing on my series of builders for C# and Ruby here is the solution in Javascript. This is probably the implementation with which I am least happy. There are several parts that did not seem to fit the language. This time around I didn’t bother with a testing framework, I just append some values to the page with jQuery. Here is the test code: var initialiseBuilder = function() { var builder = builderConstructor(); builder.configure({ 'Person': function() { return {name: 'Liam', age: 26}}, 'Property': function() { return {street: '127 Creek St', manager: builder.a('Person') }} }); return builder; }; var print = function(s) { $('body').append(s + '<br/>'); }; var build = initialiseBuilder(); // get an object liam = build.a('Person'); print(liam.name + ' is ' + liam.age); // get a modified object liam = build.a('Person', function(person) { person.age = 999; }); print(liam.name + ' is ' + liam.age); home = build.a('Property'); print(home.street + ' manager: ' + home.manager.name); and the implementation: var builderConstructor = function() { var that = {}; var defaults = {}; that.configure = function(d) { defaults = d; }; that.a = function(type, modifier) { var o = defaults[type](); if (modifier) { modifier(o); } return o; }; return that; }; I still like javascript’s syntax for anonymous methods, defaults[type]() is much clearer than the Ruby equivalent @defaults[klass].call(). You can see the striking similarity between Ruby hashes and javascript objects. I also prefer modifier(o) to the equivalent Ruby, yield o.

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• JDBC Triggers

  - by Tim Dexter

  Received a question from a customer last week, they were using the new rollup patch on top of 10.1.3.4.1. What are these boxes for? Don't you know? Surely? Well, they are for ... that new functionality, you know it's in the user docs, that thingmabobby doodah. OK, I dont know either, I can have a guess but let me check first. Serveral IM sessions, emails and a dig through the readme for the new patch and I had my answer. Its not in the official documentation, yet. Leslie is on the case. The two fields were designed to allow an Admin to set a users context attributes before a connection is made to a database and for un-setting the attributes after the connection is broken by the extraction engine. We got a sample from the Enterprise Manager team on how they will be using it with their VPD connections. FUNCTION bip_to_em_user (user_name_in IN VARCHAR2) RETURN BOOLEAN IS BEGIN SETEMUSERCONTEXT(user_name_in, MGMT_USER.OP_SET_IDENTIFIER); return TRUE; END bip_to_em_user; And used in the jdbc data source definition like this (pre-process function): sysman.mgmt_bip.bip_to_em_user(:xdo_user_name) You, of course can call any function that is going to return a boolean value, another example might be. FUNCTION set_per_process_username (username_in IN VARCHAR2) RETURN BOOLEAN IS BEGIN SETUSERCONTEXT(username_in); return TRUE; END set_per_process_username Just use your own function/package to set some user context. Very grateful for the mail from Leslie on the EM team's usage but I had to try it out. Rather than set up a VPD, I opted for a simpler test. Can I log the comings and goings of users and their queries using the same pre-process text box. Reaching back into the depths of my developer brain to remember some pl/sql, it was not that deep and I came up with: CREATE OR REPLACE FUNCTION BIPTEST (user_name_in IN VARCHAR2, smode IN VARCHAR2) RETURN BOOLEAN AS BEGIN INSERT INTO LOGTAB VALUES(user_name_in, sysdate,smode); RETURN true; END BIPTEST; To call it in the pre-fetch trigger. BIPTEST(:xdo_user_name) Not going to set the pl/sql world alight I know, but you get the idea. As a new connection is made to the database its logged in the LOGTAB table. The SMODE value just sets if its an entry or an exit. I used the pre- and post- boxes. NAME UPDATE_DATE S_FLAG oracle 14-MAY-10 09.51.34.000000000 AM Start oracle 14-MAY-10 10.23.57.000000000 AM Finish administrator 14-MAY-10 09.51.38.000000000 AM Start administrator 14-MAY-10 09.51.38.000000000 AM Finish oracle 14-MAY-10 09.51.42.000000000 AM Start oracle 14-MAY-10 09.51.42.000000000 AM Finish It works very well, I had some fun trying to find a nasty query for the extraction engine so that the timestamps from in to out actually had a difference. That engine is fast! The only derived value you can pass from BIP is :xdo_user_name. None of the other server values are available. Connection pools are not currently supported but planned for a future release. Now you know what those fields are for and look for some official documentation, rather than my ramblings, coming soon!

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• Avoiding new operator in JavaScript -- the better way

  - by greengit

  Warning: This is a long post. Let's keep it simple. I want to avoid having to prefix the new operator every time I call a constructor in JavaScript. This is because I tend to forget it, and my code screws up badly. The simple way around this is this... function Make(x) { if ( !(this instanceof arguments.callee) ) return new arguments.callee(x); // do your stuff... } But, I need this to accept variable no. of arguments, like this... m1 = Make(); m2 = Make(1,2,3); m3 = Make('apple', 'banana'); The first immediate solution seems to be the 'apply' method like this... function Make() { if ( !(this instanceof arguments.callee) ) return new arguments.callee.apply(null, arguments); // do your stuff } This is WRONG however -- the new object is passed to the apply method and NOT to our constructor arguments.callee. Now, I've come up with three solutions. My simple question is: which one seems best. Or, if you have a better method, tell it. First – use eval() to dynamically create JavaScript code that calls the constructor. function Make(/* ... */) { if ( !(this instanceof arguments.callee) ) { // collect all the arguments var arr = []; for ( var i = 0; arguments[i]; i++ ) arr.push( 'arguments[' + i + ']' ); // create code var code = 'new arguments.callee(' + arr.join(',') + ');'; // call it return eval( code ); } // do your stuff with variable arguments... } Second – Every object has __proto__ property which is a 'secret' link to its prototype object. Fortunately this property is writable. function Make(/* ... */) { var obj = {}; // do your stuff on 'obj' just like you'd do on 'this' // use the variable arguments here // now do the __proto__ magic // by 'mutating' obj to make it a different object obj.__proto__ = arguments.callee.prototype; // must return obj return obj; } Third – This is something similar to second solution. function Make(/* ... */) { // we'll set '_construct' outside var obj = new arguments.callee._construct(); // now do your stuff on 'obj' just like you'd do on 'this' // use the variable arguments here // you have to return obj return obj; } // now first set the _construct property to an empty function Make._construct = function() {}; // and then mutate the prototype of _construct Make._construct.prototype = Make.prototype; eval solution seems clumsy and comes with all the problems of "evil eval". __proto__ solution is non-standard and the "Great Browser of mIsERY" doesn't honor it. The third solution seems overly complicated. But with all the above three solutions, we can do something like this, that we can't otherwise... m1 = Make(); m2 = Make(1,2,3); m3 = Make('apple', 'banana'); m1 instanceof Make; // true m2 instanceof Make; // true m3 instanceof Make; // true Make.prototype.fire = function() { // ... }; m1.fire(); m2.fire(); m3.fire(); So effectively the above solutions give us "true" constructors that accept variable no. of arguments and don't require new. What's your take on this. -- UPDATE -- Some have said "just throw an error". My response is: we are doing a heavy app with 10+ constructors and I think it'd be far more wieldy if every constructor could "smartly" handle that mistake without throwing error messages on the console.

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• Code style Tip: Case insensitive string comparison

  - by Michael Freidgeim

  Goodif (String.Compare(myString, ALL_TEXT, StringComparison.OrdinalIgnoreCase) == 0)                                {                                         return true;                                }OK(not obvious what true means) if (String.Compare(myString, ALL_TEXT, true) == 0)                                {                                         return true;                                }BAD: (non null safe) if (myString.ToLower()==ALL_TEXT.ToLower()                                {                                         return true;                                }

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• How to create a simple adf dashboard application with EJB 3.0

  - by Rodrigues, Raphael

  In this month's Oracle Magazine, Frank Nimphius wrote a very good article about an Oracle ADF Faces dashboard application to support persistent user personalization. You can read this entire article clicking here. The idea in this article is to extend the dashboard application. My idea here is to create a similar dashboard application, but instead ADF BC model layer, I'm intending to use EJB3.0. There are just a one small trick here and I'll show you. I'm using the HR usual oracle schema. The steps are: 1. Create a ADF Fusion Application with EJB as a layer model 2. Generate the entities from table (I'm using Department and Employees only) 3. Create a new Session Bean. I called it: HRSessionEJB 4. Create a new method like that: public List getAllDepartmentsHavingEmployees(){ JpaEntityManager jpaEntityManager = (JpaEntityManager)em.getDelegate(); Query query = jpaEntityManager.createNamedQuery("Departments.allDepartmentsHavingEmployees"); JavaBeanResult.setQueryResultClass(query, AggregatedDepartment.class); return query.getResultList(); } 5. In the Departments entity, create a new native query annotation: @Entity @NamedQueries( { @NamedQuery(name = "Departments.findAll", query = "select o from Departments o") }) @NamedNativeQueries({ @NamedNativeQuery(name="Departments.allDepartmentsHavingEmployees", query = "select e.department_id, d.department_name , sum(e.salary), avg(e.salary) , max(e.salary), min(e.salary) from departments d , employees e where d.department_id = e.department_id group by e.department_id, d.department_name")}) public class Departments implements Serializable {...} 6. Create a new POJO called AggregatedDepartment: package oramag.sample.dashboard.model; import java.io.Serializable; import java.math.BigDecimal; public class AggregatedDepartment implements Serializable{ @SuppressWarnings("compatibility:5167698678781240729") private static final long serialVersionUID = 1L; private BigDecimal departmentId; private String departmentName; private BigDecimal sum; private BigDecimal avg; private BigDecimal max; private BigDecimal min; public AggregatedDepartment() { super(); } public AggregatedDepartment(BigDecimal departmentId, String departmentName, BigDecimal sum, BigDecimal avg, BigDecimal max, BigDecimal min) { super(); this.departmentId = departmentId; this.departmentName = departmentName; this.sum = sum; this.avg = avg; this.max = max; this.min = min; } public void setDepartmentId(BigDecimal departmentId) { this.departmentId = departmentId; } public BigDecimal getDepartmentId() { return departmentId; } public void setDepartmentName(String departmentName) { this.departmentName = departmentName; } public String getDepartmentName() { return departmentName; } public void setSum(BigDecimal sum) { this.sum = sum; } public BigDecimal getSum() { return sum; } public void setAvg(BigDecimal avg) { this.avg = avg; } public BigDecimal getAvg() { return avg; } public void setMax(BigDecimal max) { this.max = max; } public BigDecimal getMax() { return max; } public void setMin(BigDecimal min) { this.min = min; } public BigDecimal getMin() { return min; } } 7. Create the util java class called JavaBeanResult. The function of this class is to configure a native SQL query to return POJOs in a single line of code using the utility class. Credits: http://onpersistence.blogspot.com.br/2010/07/eclipselink-jpa-native-constructor.html package oramag.sample.dashboard.model.util; /******************************************************************************* * Copyright (c) 2010 Oracle. All rights reserved. * This program and the accompanying materials are made available under the * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 * which accompanies this distribution. * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html * and the Eclipse Distribution License is available at * http://www.eclipse.org/org/documents/edl-v10.php. * * @author shsmith ******************************************************************************/ import java.lang.reflect.Constructor; import java.lang.reflect.InvocationTargetException; import java.util.ArrayList; import java.util.List; import javax.persistence.Query; import org.eclipse.persistence.exceptions.ConversionException; import org.eclipse.persistence.internal.helper.ConversionManager; import org.eclipse.persistence.internal.sessions.AbstractRecord; import org.eclipse.persistence.internal.sessions.AbstractSession; import org.eclipse.persistence.jpa.JpaHelper; import org.eclipse.persistence.queries.DatabaseQuery; import org.eclipse.persistence.queries.QueryRedirector; import org.eclipse.persistence.sessions.Record; import org.eclipse.persistence.sessions.Session; /*** * This class is a simple query redirector that intercepts the result of a * native query and builds an instance of the specified JavaBean class from each * result row. The order of the selected columns musts match the JavaBean class * constructor arguments order. * * To configure a JavaBeanResult on a native SQL query use: * JavaBeanResult.setQueryResultClass(query, SomeBeanClass.class); * where query is either a JPA SQL Query or native EclipseLink DatabaseQuery. * * @author shsmith * */ public final class JavaBeanResult implements QueryRedirector { private static final long serialVersionUID = 3025874987115503731L; protected Class resultClass; public static void setQueryResultClass(Query query, Class resultClass) { JavaBeanResult javaBeanResult = new JavaBeanResult(resultClass); DatabaseQuery databaseQuery = JpaHelper.getDatabaseQuery(query); databaseQuery.setRedirector(javaBeanResult); } public static void setQueryResultClass(DatabaseQuery query, Class resultClass) { JavaBeanResult javaBeanResult = new JavaBeanResult(resultClass); query.setRedirector(javaBeanResult); } protected JavaBeanResult(Class resultClass) { this.resultClass = resultClass; } @SuppressWarnings("unchecked") public Object invokeQuery(DatabaseQuery query, Record arguments, Session session) { List results = new ArrayList(); try { Constructor[] constructors = resultClass.getDeclaredConstructors(); Constructor javaBeanClassConstructor = null; // (Constructor) resultClass.getDeclaredConstructors()[0]; Class[] constructorParameterTypes = null; // javaBeanClassConstructor.getParameterTypes(); List rows = (List) query.execute( (AbstractSession) session, (AbstractRecord) arguments); for (Object[] columns : rows) { boolean found = false; for (Constructor constructor : constructors) { javaBeanClassConstructor = constructor; constructorParameterTypes = javaBeanClassConstructor.getParameterTypes(); if (columns.length == constructorParameterTypes.length) { found = true; break; } // if (columns.length != constructorParameterTypes.length) { // throw new ColumnParameterNumberMismatchException( // resultClass); // } } if (!found) throw new ColumnParameterNumberMismatchException( resultClass); Object[] constructorArgs = new Object[constructorParameterTypes.length]; for (int j = 0; j < columns.length; j++) { Object columnValue = columns[j]; Class parameterType = constructorParameterTypes[j]; // convert the column value to the correct type--if possible constructorArgs[j] = ConversionManager.getDefaultManager() .convertObject(columnValue, parameterType); } results.add(javaBeanClassConstructor.newInstance(constructorArgs)); } } catch (ConversionException e) { throw new ColumnParameterMismatchException(e); } catch (IllegalArgumentException e) { throw new ColumnParameterMismatchException(e); } catch (InstantiationException e) { throw new ColumnParameterMismatchException(e); } catch (IllegalAccessException e) { throw new ColumnParameterMismatchException(e); } catch (InvocationTargetException e) { throw new ColumnParameterMismatchException(e); } return results; } public final class ColumnParameterMismatchException extends RuntimeException { private static final long serialVersionUID = 4752000720859502868L; public ColumnParameterMismatchException(Throwable t) { super( "Exception while processing query results-ensure column order matches constructor parameter order", t); } } public final class ColumnParameterNumberMismatchException extends RuntimeException { private static final long serialVersionUID = 1776794744797667755L; public ColumnParameterNumberMismatchException(Class clazz) { super( "Number of selected columns does not match number of constructor arguments for: " + clazz.getName()); } } } 8. Create the DataControl and a jsf or jspx page 9. Drag allDepartmentsHavingEmployees from DataControl and drop in your page 10. Choose Graph > Type: Bar (Normal) > any layout 11. In the wizard screen, Bars label, adds: sum, avg, max, min. In the X Axis label, adds: departmentName, and click in OK button 12. Run the page, the result is showed below: You can download the workspace here . It was using the latest jdeveloper version 11.1.2.2.

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