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• java.lang.ClassNotFoundException: org.apache.struts2.dispatcher.FilterDispatcher

  - by user714698

  log when start the tomcat Apr 28, 2011 10:52:57 AM org.apache.catalina.core.AprLifecycleListener init INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: D:\software\jdk1.5.0_06\bin;.;C:\WINDOWS\system32;C:\WINDOWS;D:/software/jdk1.5.0_06/bin/../jre/bin/client;D:/software/jdk1.5.0_06/bin/../jre/bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\TortoiseSVN\bin.;D:\software\jdk1.5.0_06\bin;D:\software\Ant 1.7\bin;D:\software\Axis2-1.5.4\axis2-1.5.4-bin\axis2-1.5.4\bin;C:\Program Files\IDM Computer Solutions\UltraEdit\ Apr 28, 2011 10:52:58 AM org.apache.tomcat.util.digester.SetPropertiesRule begin WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:StrutsHelloWorld' did not find a matching property. Apr 28, 2011 10:52:58 AM org.apache.tomcat.util.digester.SetPropertiesRule begin WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:StrutsHelloWorld1' did not find a matching property. Apr 28, 2011 10:53:00 AM org.apache.coyote.http11.Http11Protocol init INFO: Initializing Coyote HTTP/1.1 on http-8080 Apr 28, 2011 10:53:00 AM org.apache.catalina.startup.Catalina load INFO: Initialization processed in 3657 ms Apr 28, 2011 10:53:00 AM org.apache.catalina.core.StandardService start INFO: Starting service Catalina Apr 28, 2011 10:53:00 AM org.apache.catalina.core.StandardEngine start INFO: Starting Servlet Engine: Apache Tomcat/6.0.32 Apr 28, 2011 10:53:01 AM org.apache.catalina.core.StandardContext filterStart SEVERE: Exception starting filter struts2 java.lang.ClassNotFoundException: org.apache.struts2.dispatcher.FilterDispatcher at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526) at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:269) at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422) at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115) at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4071) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4725) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) at org.apache.catalina.core.StandardHost.start(StandardHost.java:840) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463) at org.apache.catalina.core.StandardService.start(StandardService.java:525) at org.apache.catalina.core.StandardServer.start(StandardServer.java:754) at org.apache.catalina.startup.Catalina.start(Catalina.java:595) 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:585) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414) Apr 28, 2011 10:53:01 AM org.apache.catalina.core.StandardContext start SEVERE: Error filterStart Apr 28, 2011 10:53:01 AM org.apache.catalina.core.StandardContext start SEVERE: Context [/StrutsHelloWorld1] startup failed due to previous errors log4j:WARN No appenders could be found for logger (com.opensymphony.xwork2.config.providers.XmlConfigurationProvider). log4j:WARN Please initialize the log4j system properly. Apr 28, 2011 10:53:05 AM org.apache.coyote.http11.Http11Protocol start INFO: Starting Coyote HTTP/1.1 on http-8080 Apr 28, 2011 10:53:05 AM org.apache.jk.common.ChannelSocket init INFO: JK: ajp13 listening on /0.0.0.0:8009 Apr 28, 2011 10:53:05 AM org.apache.jk.server.JkMain start INFO: Jk running ID=0 time=0/46 config=null Apr 28, 2011 10:53:05 AM org.apache.catalina.startup.Catalina start INFO: Server startup in 4951 ms

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• Django facebook integration error

  - by Gaurav

  I'm trying to integrate facebook into my application so that users can use their FB login to login to my site. I've got everything up and running and there are no issues when I run my site using the command line python manage.py runserver But this same code refuses to run when I try and run it through Apache. I get the following error: Environment: Request Method: GET Request URL: http://helvetica/foodfolio/login Django Version: 1.1.1 Python Version: 2.6.4 Installed Applications: ['django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.sites', 'foodfolio.app', 'foodfolio.facebookconnect'] Installed Middleware: ('django.contrib.sessions.middleware.SessionMiddleware', 'facebook.djangofb.FacebookMiddleware', 'django.middleware.common.CommonMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'facebookconnect.middleware.FacebookConnectMiddleware') Template error: In template /home/swat/website-apps/foodfolio/facebookconnect/templates/facebook/js.html, error at line 2 Caught an exception while rendering: No module named app.models 1 : <script type="text/javascript"> 2 : FB_RequireFeatures(["XFBML"], function() {FB.Facebook.init("{{ facebook_api_key }}", " {% url facebook_xd_receiver %} ")}); 3 : 4 : function facebookConnect(loginForm) { 5 : FB.Connect.requireSession(); 6 : FB.Facebook.get_sessionState().waitUntilReady(function(){loginForm.submit();}); 7 : } 8 : function pushToFacebookFeed(data){ 9 : if(data['success']){ 10 : var template_data = data['template_data']; 11 : var template_bundle_id = data['template_bundle_id']; 12 : feedTheFacebook(template_data,template_bundle_id,function(){}); Traceback: File "/usr/lib/pymodules/python2.6/django/core/handlers/base.py" in get_response 92. response = callback(request, *callback_args, **callback_kwargs) File "/home/swat/website-apps/foodfolio/app/controller.py" in __showLogin__ 238. context_instance = RequestContext(request)) File "/usr/lib/pymodules/python2.6/django/shortcuts/__init__.py" in render_to_response 20. return HttpResponse(loader.render_to_string(*args, **kwargs), **httpresponse_kwargs) File "/usr/lib/pymodules/python2.6/django/template/loader.py" in render_to_string 108. return t.render(context_instance) File "/usr/lib/pymodules/python2.6/django/template/__init__.py" in render 178. return self.nodelist.render(context) File "/usr/lib/pymodules/python2.6/django/template/__init__.py" in render 779. bits.append(self.render_node(node, context)) File "/usr/lib/pymodules/python2.6/django/template/debug.py" in render_node 71. result = node.render(context) File "/usr/lib/pymodules/python2.6/django/template/__init__.py" in render 946. autoescape=context.autoescape)) File "/usr/lib/pymodules/python2.6/django/template/__init__.py" in render 779. bits.append(self.render_node(node, context)) File "/usr/lib/pymodules/python2.6/django/template/debug.py" in render_node 81. raise wrapped Exception Type: TemplateSyntaxError at /foodfolio/login Exception Value: Caught an exception while rendering: No module named app.models

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• Hibernate - PropertyNotFoundException: Could not find a getter for ...

  - by Ben Noland

  I have a class that looks like the following: public class MyClass { private String dPart1; public String getDPart1() { return dPart1; } public void setDPart1(String dPart1) { this.dPart1 = dPart1; } } My hibernate mapping file maps the property as follows: <property name="dPart1" not-null="true"/> I get the following error: org.hibernate.PropertyNotFoundException: Could not find a getter for dPart1 in class com.mypackage.MyClass at org.hibernate.property.BasicPropertyAccessor.createGetter(BasicPropertyAccessor.java:282) at org.hibernate.property.BasicPropertyAccessor.getGetter(BasicPropertyAccessor.java:275) at org.hibernate.mapping.Property.getGetter(Property.java:272) at org.hibernate.tuple.entity.PojoEntityTuplizer.buildPropertyGetter(PojoEntityTuplizer.java:247) at org.hibernate.tuple.entity.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:125) at org.hibernate.tuple.entity.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:55) at org.hibernate.tuple.entity.EntityEntityModeToTuplizerMapping.<init>(EntityEntityModeToTuplizerMapping.java:56) at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:302) at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:434) at It appears that hibernate doesn't like my capitalization. How should I fix this?

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• C# Constructor Question

  - by Vaccano

  I have a constructor question for C#. I have this class: public partial class Signature : Form, ISignature { private readonly SignatureMediator mediator; public Signature(SignatureMediator mediator) { this.mediator = mediator; InitializeComponent(); } .... more stuff } I want to construct this class like this: public SignatureMediator(int someValue, int otherValue, int thirdValue) : this(new Signature(this), someValue, otherValue, thirdValue) // This is not allowed --^ { // I don't see anyway to get this in to the ":this" part. //Signature signature = new Signature(this); } public SignatureMediator(ISignature form, int someValue, int otherValue, int thirdValue) { SigForm = form; SomeValue= someValue; OtherValue= otherValue; ThirdValue= thirdValue; } The : this( new SignatureThis(this) is not allowed (the this used in the constructor is not allowed). Is there anyway to set this up without duplicating the assignment of the int values?

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• FireBug didn't working.

  - by Nano HE

  Hi, I created a index.php file located in http://localhost/home/index.php. The file filled with the code below. <?php # //include the file require_once("FirePHP.class.php"); # //create the object $firephp = FirePHP::getInstance(true); # //send information $firephp->fb("Hello world!"); ?> I enabled fireBug and firePHP, BTW I download firePHPCore and copy FirePHP.class.php to http://localhost/home/FirePHP.class.php directory. To run this code I can't see the message “Hello world!” in the firebug console: I followed the tutorial http://yensdesign.com/2008/10/how-to-debug-php-code/ Any suggesion?

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• include_once error : failed to open stream in Boonex Dolphin v7.0.9

  - by Guillaume Pierre

  first let me say I'm a beginner in PHP, specifically PHP Object-oriented programming. I'm working on a V7.0.9 dolphin version.http://www.boonex.com/dolphin While I'm trying to include a class.php from a 3rd-part developer I work with <?php include_once ('modules/developer/configure/classes/class.php'); I get this error : Warning: include_once(modules/developer/configure/classes/ClassExample.php): failed to open stream: No such file or directory in /var/www/vhosts/mysite.com/httpdocs/dolphin/inc/classes/BxDolPageView.php(612) : eval()'d code on line 2 Warning: include_once(): Failed opening 'modules/developer/configure/classes/ClassExample.php' for inclusion (include_path='.:') in /var/www/vhosts/mysite.com/httpdocs/dolphin/inc/classes/BxDolPageView.php(612) : eval()'d code on line 2 Fatal error: Class 'ClassExample' not found in /var/www/vhosts/mysite.com/httpdocs/dolphin/inc/classes/BxDolPageView.php(612) : eval()'d code on line 6 I'm trying to figure out where is the problem... does it comes from Boonex? or is it linked to my server configuration? I really don't know where to begin to resolve... Thx in advance for your kind help if you get knowledge on it

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• Custom Sorting on Custom Field in Django

  - by RotaJota

  In my app, I have defined a custom field to represent a physical quantity using the quantities package. class AmountField(models.CharField): def __init__(self, *args, **kwargs): ... def to_python(self, value): create_quantities_value(value) Essentially the way it works is it extends CharField to store the value as a string in the database "12 min" and represents it as a quantities object when using the field in a model array(12) * min Then in a model it is used as such: class MyModel(models.Model): group = models.CharField() amount = AmountField() class Meta: ordering = ['group', 'amount'] My issue is that these fields do not seem to sort by the quantity, but instead by the string. So if I have some objects that contain something like {"group":"A", "amount":"12 min"} {"group":"A", "amount":"20 min"} {"group":"A", "amount":"2 min"} {"group":"B", "amount":"20 min"} {"group":"B", "amount":"1 hr"} they end up sorted something like this: >>> MyModel.objects.all() [{A, 12 min}, {A, 2 min}, {A, 20 min}, {B, 1 hr}, {B, 20 min}] essentially alphabetical order. Can I give my custom AmountField a comparison function so that it will compare by the python value instead of the DB value?

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• Flash Double-click an externally loaded SWF

  - by Trist

  OK. I've got a class (which extends MovieClip) that loads in an external SWF (made in pdf2swf). That is added to another class which has declared doubleClickEnabled = true and I'm listening for DOUBLE_CLICK events. Problem is when the SWF is loaded my code picks up no DOUBLE_CLICK events, only CLICK events. I've tried it without adding the SWF to the stage and it does pick up DOUBLE_CLICK events. Anybody come across this before? class ParentClass{ ... public function ParentClass(){ ... mcToLoadSWF = new MovieClip(); addChild(mcToLoadSWF); doubleClickEnabled = true; addEventListener(MouseEvent.DOUBLE_CLICK, doubleClickHandler); ... } } I've also tried adding the event listener to the mcToLoadSWF as well. No dice. Cheers Tristian

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• How to use NSObject to URLs with three20 properly

  - by Frank

  Basically i map my controllers to accept the address class to be passed into the listingpage controller. Which is done here: [map from:@"tt://listingPage/(initWithResult:)" toViewController:[ListingPageController class]]; [map from:[Address class] name:@"result" toURL:@"tt://listingPage/(initWithResult:)"]; This url is being used in my table item which I am has been invoked here: for (Address *result in [(id<SearchResultsModel>)self.model results]) { NSString* url = [result URLValueWithName:@"result"]; TTTableImageItem* tii = [TTTableMessageItem itemWithTitle:[result addressText] caption:[result addressText] text:[result subText] imageURL:[result image] URL:url]; [self.items addObject:tii]; } My app crashes, I am not sure why, seems to be getting an invalidate view. any help would be much appreciated.

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• How to inject JPA EntityManager using spring

  - by marcos

  Hello all! I have a few questions about jpa + spring integration running on tomcat, i've been looking fo some time and couldn't find any concrete answer, so here it goes: Is it possible to have spring to inject the JPA entityManager object into my DAO class without extending JpaDaoSupport? if yes, does spring manage the transaction in this case? I'm trying to keep spring configuration as simple as possible: <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"> <property name="entityManagerFactory" ref="em"/> </bean> <bean id="em" class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean"> <property name="persistenceUnitName" value="myPU"/> </bean> EDIT: that was very helpfull, thank you all!

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• FitNesse/Slim String Operators

  - by grootjans

  Is it possible to express this in a Query Table in FitNesse with SLIM for .net: contains(data) startswith(data) endswith(data) I know from a previous question it was possible for FitNesse/Fit with cell handler loader. I'm looking for the equivalent in Slim.

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• Trying to Add Insert Row to Footer in GridView ASP.net

  - by chillconsulting

  I'm trying to give the user the ability to create a new record from the footer row and my event handler doesn't seem to be working... or maybe I'm going at this all wrong. The insert button that I enabled in the gridview doesn't work either...checkout the site at http://aisched.engr.oregonstate.edu/admin/courses.aspx Here is my code in front and behind: public partial class admin_courses : System.Web.UI.Page { public Table table; ListDictionary listValues = new ListDictionary(); TextBox textBox1 = new TextBox(); //Name TextBox textBox2 = new TextBox(); //CR TextBox textBox3 = new TextBox(); //CourseNum TextBox textBox4 = new TextBox(); //Dept protected void Page_Init() { } protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { if (e.Row.RowType != DataControlRowType.Footer) return; //Escape if not footer textBox1.ID = "name"; textBox1.Width = 250; textBox2.ID = "credit_hours"; textBox2.Width = 25; textBox3.ID = "dept"; textBox3.Width = 30; textBox4.ID = "class"; textBox4.Width = 25; LinkButton add = new LinkButton(); add.ID = "add"; add.Text = "Add course"; add.CommandName = "add"; add.Click += new EventHandler(add_Click); e.Row.Cells[1].Controls.Add(textBox1); e.Row.Cells[2].Controls.Add(textBox2); e.Row.Cells[3].Controls.Add(textBox3); e.Row.Cells[4].Controls.Add(textBox4); e.Row.Cells[5].Controls.Add(add); } public void add_Click(object sender, EventArgs e) { Response.Write("you Clicked Add Course!"); if (textBox1.Text != null && textBox2.Text != null && textBox3.Text != null && textBox4.Text != null) { listValues.Add("name", textBox1.Text); listValues.Add("credit_hours", textBox2.Text); listValues.Add("dept", textBox4.Text); //For Visual listValues.Add("class", textBox3.Text); } LinqDataSource1.Insert(listValues); Response.Redirect("~/admin/courses.aspx"); } } <%@ Page Language="C#" MasterPageFile="~/admin.master" AutoEventWireup="true" CodeFile="courses.aspx.cs" Inherits="admin_courses" Title="OSU Aisched | Admin - Courses" %> <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %> <asp:Content ID="Content1" ContentPlaceHolderID="admin_nav_links" Runat="Server"> <ul id="main"> <li><a href="overview.aspx">Overview</a></li> <li><a href="users.aspx">Users</a></li> <li class="current_page_item"><a href="courses.aspx">Courses</a></li> <li><a href="programs.aspx">Programs</a></li> <li><a href="sections.aspx">Sections</a></li> <li><a href="import.aspx">Import</a></li> <li><a href="logs.aspx">Logs</a></li> </ul> </asp:Content> <asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server"> <form id="Form1" runat="server"> <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <asp:LinqDataSource ID="LinqDataSource1" runat="server" ContextTypeName="DataClassesDataContext" EnableDelete="True" EnableInsert="True" EnableUpdate="True" TableName="courses"> </asp:LinqDataSource> <h1><a>Courses</a></h1> <asp:UpdateProgress ID="UpdateProgress1" runat="server"> </asp:UpdateProgress> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="course_id" DataSourceID="LinqDataSource1" BackColor="#DEBA84" BorderColor="#DEBA84" BorderStyle="None" BorderWidth="1px" CellPadding="3" CellSpacing="2" AllowSorting="True" ShowFooter="True" OnRowDataBound="GridView1_RowDataBound" > <RowStyle BackColor="#FFF7E7" ForeColor="#8C4510" /> <Columns> <asp:BoundField DataField="course_id" HeaderText="ID" ReadOnly="True" SortExpression="course_id" /> <asp:BoundField DataField="name" HeaderText="Name" SortExpression="name" /> <asp:BoundField DataField="credit_hours" HeaderText="CR" SortExpression="credit_hours" /> <asp:BoundField DataField="dept" HeaderText="Dept" SortExpression="dept" /> <asp:BoundField DataField="class" HeaderText="#" SortExpression="class" /> <asp:CommandField DeleteImageUrl="~/media/delete.png" ShowDeleteButton="True" ShowEditButton="True" ShowInsertButton="True"/> </Columns> <FooterStyle BackColor="#F7DFB5" ForeColor="#8C4510" /> <PagerStyle ForeColor="#8C4510" HorizontalAlign="Center" /> <SelectedRowStyle BackColor="#738A9C" Font-Bold="True" ForeColor="White" /> <HeaderStyle BackColor="#A55129" Font-Bold="True" ForeColor="White" /> </asp:GridView> <br /> <asp:HyperLink ID="HyperLink1" runat="server" Target="~/admin/addCourse.aspx" Enabled="true"NavigateUrl="~/admin/addCourse.aspx" Text="Add New course"></asp:HyperLink> <br /> </form> </asp:Content>

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• What happens when a computer starts?

  - by darkie15

  Hi All, Hopefully the title isn't funny to be ignored! But I have a genuine interest in understanding what happens when a computer is turned on. i.e. how the computer works on startup, various initializations that take place. For example, is bootstrap loader the first step, when are device drivers loaded etc.. Please guide me to understand. Regards, darkie

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• Is this a good code (came across while reading code of a colleague)

  - by eriks

  // file a.hpp class a; typedef boost::shared_ptr<a> aPtr class a{ public: static aPtr CreateImp(); virtual void Foo() = 0 ; .... }; //file aImp.hpp class aImp : public a{ virtual void Foo(); }; //file aImp.cpp aPtr a::CreateImp() { return aPtr(new aImp()); } void aImp::Foo(){} The client must use CreateImp to get ptr to 'a', and can't use 'a' other ways. What do you think about this implementation? what do you think about this king of implementation?

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• ValueError with multi-table inheritance in Django Admin

  - by jorde

  I created two new classes which inherit model Entry: class Entry(models.Model): LANGUAGE_CHOICES = settings.LANGUAGES language = models.CharField(max_length=2, verbose_name=_('Comment language'), choices=LANGUAGE_CHOICES) user = models.ForeignKey(User) country = models.ForeignKey(Country, null=True, blank=True) created = models.DateTimeField(auto_now=True) class Comment(Entry): comment = models.CharField(max_length=2000, blank=True, verbose_name=_('Comment in English')) class Discount(Entry): discount = models.CharField(max_length=2000, blank=True, verbose_name=_('Comment in English')) coupon = models.CharField(max_length=2000, blank=True, verbose_name=_('Coupon code if needed')) After adding these new models to admin via admin.site.register I'm getting ValueError when trying to create a comment or a discount via admin. Adding entries works fine. Error msg: ValueError at /admin/reviews/discount/add/ Cannot assign "''": "Discount.discount" must be a "Discount" instance. Request Method: GET Request URL: http://127.0.0.1:8000/admin/reviews/discount/add/ Exception Type: ValueError Exception Value: Cannot assign "''": "Discount.discount" must be a "Discount" instance. Exception Location: /Library/Python/2.6/site-packages/django/db/models/fields/related.py in set, line 211 Python Executable: /usr/bin/python Python Version: 2.6.1

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• The second argument to copy() function cannot be a directory

  - by Jorm

  Anyone know why this: $title = trim($_POST['title']); $description = trim($_POST['description']); // Array of allowed image file formats $allowedExtensions = array('jpeg', 'jpg', 'jfif', 'png', 'gif', 'bmp'); foreach ($_FILES as $file) { if ($file['tmp_name'] > '') { if (!in_array(end(explode(".", strtolower($file['name']))), $allowedExtensions)) { echo '<div class="error">Invalid file type.</div>'; } } } if (strlen($title) < 3) echo '<div class="error">Too short title</div>'; else if (strlen($description) > 70) echo '<div class="error">Too long desccription.</div>'; else { move_uploaded_file($_FILES['userfile']['tmp_name'], 'c:\wamp\www\uploads\images/'); } Gives: Warning: move_uploaded_file() [function.move-uploaded-file]: The second argument to copy() function cannot be a directory in C:\wamp\www\upload.php on line 41 Warning: move_uploaded_file() [function.move-uploaded-file]: Unable to move 'C:\wamp\tmp\php1AB.tmp' to 'c:\wamp\www\uploads\images/' in C:\wamp\www\upload.php on line 41

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• Problem deploying servlets in JBoss 5.1 on eclipse.

  - by Jeremy Goodell

  Yesterday I created a simple image servlet and attempted to deploy it. I am getting an error on JBoss startup, and then further errors on trying to invoke the servlet. I spent about 8 hours yesterday searching the web for answers and trying different scenarios. I ended up making my JBoss problems worse and then fixing them, but I never did get the servlet to work. The servlet is com.controller.MyImageServlet, and looks like this: package com.controller; import javax.servlet.http.*; /** * Servlet implementation class MyImageServlet */ public class MyImageServlet extends HttpServlet { private static final long serialVersionUID = 1L; public MyImageServlet() { super(); } // Process the HTTP Get request public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { /* ... */ } } The tags I've added to web.xml looks like this: <servlet> <servlet-name>ImageServlet</servlet-name> <servlet-class>com.controller.MyImageServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>ImageServlet</servlet-name> <url-pattern>/CERTIMAGE/*</url-pattern> </servlet-mapping> On server startup, this is the only indication in the log that something is amiss: 01:59:25,328 WARN [JAXWSDeployerHookPreJSE] Cannot load servlet class: com.controller.MyImageServlet When I try the URL pattern (http://localhost:9980/CERTIMAGE/1), I get the following stack trace in the log (and in the Browser): 01:59:39,640 INFO [[/]] Marking servlet ImageServlet as unavailable 01:59:39,640 ERROR [[ImageServlet]] Allocate exception for servlet ImageServlet java.lang.ClassNotFoundException: com.controller.MyImageServlet at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at java.lang.ClassLoader.loadClass(ClassLoader.java:248) at org.jboss.web.tomcat.service.TomcatInjectionContainer.newInstance(TomcatInjectionContainer.java:262) at org.jboss.web.tomcat.service.TomcatInjectionContainer.newInstance(TomcatInjectionContainer.java:256) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1006) at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:777) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:129) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92) at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126) at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:619) If I try the URL pattern again, I get the following message in the log: 09:33:32,390 INFO [[ImageServlet]] Servlet ImageServlet is currently unavailable I have verified that MyImageServlet.class is in the WAR at WEB-INF/classes/com/controller/images. As a matter of fact, I even added some code to one of my JSPs to attempt to instantiate the Servlet and call the doGet method. This actually works and outputs the correct debug sequences to the log indicating that the Servlet constructor and doGet methods were called. I also tried following some instructions for creating/deploying a very simple HelloWorld servlet, and that has exactly the same problem. Note that web.xml already contained a servlet put there by JBoss: org.jboss.web.tomcat.service.StatusServlet -- that Servlet does not give any errors in the log. As an experiment, I removed ".web" from that path and ended up getting exactly the same error as I'm getting on my Servlet. So it would appear that JBoss is not able to locate my Servlet given the specified path. Just for kicks, I've tried all sorts of other paths, like just plain MyImageServlet, controller.MyImageServlet, and more. Also, the servlet was originally named ImageServlet, but I attempted the name change thinking maybe there was some conflict with an existing ImageServlet. In all cases, the behavior is the same. After all of my research yesterday, I would say that this appears to be a problem with the JBoss servlet container, and I also learned that JBoss 5.1.0.GA should come bundled with a tomcat servlet container. I installed JBoss on my PC (Windows XP) myself less than 2 months ago (from jboss.org) and used it pretty much as is. Note that I am running on JDK 1.6, so I did use the jboss-jdk6 installation version. I am running on Windows, but I also deploy to a Linux virtual dedicated server. I deployed the current version of my program, including the servlet to the Linux box, but I get the exact same errors. I'm reluctant to just try reinstalling JBoss, since it's hard to place the blame on the JBoss installation when I get the same errors on two completely different installations. I am a bit suspicious of the bundled tomcat servlet container, because using eclipse, I haven't been able to locate any indication that there is a tomcat bundled into JBoss. I did locate servlet-api.jar in the JBoss common/lib directory. This is on the eclipse build path. One possibly useful note: I had previously used a standalone tomcat server for other projects using the same eclipse, so maybe it's some sort of eclipse issue? But, as I said, I do get the same errors when I deploy to the Linux server, and that deployment process just involves ftping files to the server and then putting them into the deployed war package and restarting JBoss. Thanks for any help you can provide.

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• Use some CSS properties in many selectors without editing HTML or using JS

  - by OrB

  CSS: .bananaTrans { -moz-transition : all 1s ease-in-out; -webkit-transition: all 1s ease-in-out; transition : all 1s ease-in-out; } .bananaClass { color: yellow; } HTML: <div class="bananaClass">Banana Banana Banana</div> The objective is to make every element that has class "bananaClass" inherit the properties of "bananaTrans" without editing the HTML or using JavaScript. It ("bananaTrans") don't need exactly to be a class, it's just a bunch of properties to be used amongst other selectors.

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• How can I generate an Expression tree that queries an object with List<T> as a property?

  - by David Robbins

  Forgive my clumsy explanation, but I have a class that contains a List: public class Document { public int OwnerId { get; set; } public List<User> Users { get; set; } public Document() { } } public class User { public string UserName { get; set; } public string Department { get; set; } } Currently I use PredicateBuilder to perform dynmica queries on my objects. How can I turn the following LINQ statement into an Expression Tree: var predicate= PredicateBuilder.True<User>(); predicate= predicate.And<User>(user => user.Deparment == "HR"); var deptDocs = documents.AsQueryable() .Where(doc => doc.Users .AsQueryable().Count(predicate) > 0) .ToList(); In other words var deptDocs = documents.HasUserAttributes("Department", "HR").ToList();

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• Custom XML Serialization, how to write custom root element?

  - by Beta033

  I'm probably just doing this wrong, i know. i'm using custom serialization and when the xml is generated it's putting the class name as the root element Example: <MyClassName> <MyIntendedRootNode> <ObjectType> <Property1/> <Property2/> ... I'm inoking the serialization by calling xmlserializer.Serialize(writer,Me) so i'm sure that has something to do with it. I've tried putting XMLRoot onto the class, but i think as vb is compiling this partial class with it's aspx page, it's either overwriting this property or ignoring it entirely. ideally i'd like to just tell it to either throw away everything it has and use a different root element. Anybody else do this except me? Thanks

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• How to retrieve only updated/new records since the last query in SQL?

  - by William Choi

  Hi all, I was asked to design a class for caching SQL query results. Calling the class' query method will query and cache the entire set of results at the first time; afterward, each subsequence query will retrieve only the updated portion, and will merge the result into the cache. If the class is required to be generic, i.e. NO knowledge about the db and the tables, do you have any idea? Is it possible, and how to retrieve only updated/new records since the last query? Thanks! William

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• C++ template partial specialization error

  - by JP19

  Hi, The following code is giving me a compilation error: class Q64 is not a valid type for a template constant parameter template<int GRIDD, class T> INLINE T grid_residue(T amount) { T rem = amount%(GRIDD); if (rem > GRIDD/2) rem -= GRIDD; return rem; } template<int GRIDD, Q64> INLINE Q64 grid_residue(Q64 amount) { return Q64(grid_residue<GRIDD, int64_t>(to_int(amount))); } Whats wrong? I am trying to specialize grid_residue for class Q64. thanks

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• How far does Dependency Injection reach?

  - by Baddie

  My web app solution consists of 3 projects: Web App (ASP.NET MVC) Business Logic Layer (Class Library) Database Layer (Entity Framework) I want to use Ninject to manage the lifetime of the DataContext generated by the Entity Framework in the Database Layer. The Business Logic layer consists of classes which reference repositories (located in the database layer) and my ASP.NET MVC app references the business logic layer's service classes to run code. Each repository creates an instance of the MyDataContext object from the Entity Framework Repository public class MyRepository { private MyDataContext db; public MyRepository { this.db = new MyDataContext(); } // methods } Business Logic Classes public class BizLogicClass { private MyRepository repos; public MyRepository { this.repos = new MyRepository(); } // do stuff with the repos } Will Ninject handle the lifetime of MyDataContext despite the lengthy dependency chain from the Web App to the Data Layer?

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• RoR | how to get content_tags to nest?

  - by Digital Cake

  As you can see I have a helper with a method that I'm trying to render out to the view. The nested content_tags do not render what is my disconnect about this tag? def draw_calendar(selected_month, month, current_date) content_tag(:table) do content_tag(:thead) do content_tag(:tr) do I18n.t(:"date.abbr_day_names").map{ |day| content_tag(:th, day, :escape => false) } end #content_tag :tr end #content_tag :thead content_tag(:tbody) do month.collect do |week| content_tag(:tr, :class => "week") do week.collect do |date| content_tag(:td, :class => "day") do content_tag(:div, date.day, :class => (Date.today == current_date ? "today" : nil)) end #content_tag :td end #week.collect end #content_tag :tr end #month.collect end #content_tag :tbody end #content_tag :table end #draw_calendar

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• SecurityException in Sandboxed AppDomain

  - by Galen

  I'm attempting to use C# as a scripting language using CSharpCodeProvider (using VS2010 and .NET 4.0). I want the scripts to be run in a restricted AppDomain with minimal permissions. Currently, I'm getting an exception while trying to instantiate a class in the AppDomain (The call to CreateInstanceAndUnwrap()). Here is some simplified code that reproduces the exception: using System; using System.Collections.Generic; using Microsoft.CSharp; using System.CodeDom; using System.CodeDom.Compiler; using System.Security; using System.Security.Policy; using System.Security.Permissions; using System.Reflection; using System.Runtime.Remoting; namespace ConsoleApp { class Program { static void Main(string[] args) { // set permissions PermissionSet permissions = new PermissionSet(PermissionState.None); permissions.AddPermission(new SecurityPermission( SecurityPermissionFlag.Execution)); AppDomainSetup adSetup = new AppDomainSetup(); adSetup.ApplicationBase = AppDomain.CurrentDomain.BaseDirectory; //Create a list of fully trusted assemblies Assembly[] asms = AppDomain.CurrentDomain.GetAssemblies(); List<StrongName> sns = new List<StrongName>(); for (int x = 0; x < asms.Length; x++) { StrongName sn = asms[x].Evidence.GetHostEvidence<StrongName>(); if (sn != null && sns.Contains(sn) == false) sns.Add(sn); } //this includes: "mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" AppDomain domain = AppDomain.CreateDomain("NewAppDomain", AppDomain.CurrentDomain.Evidence, adSetup, permissions);//, sns);//, sn4, sn, sn2, sn3); try { String asmName = Assembly.GetExecutingAssembly().FullName; String typeName = typeof(ConsoleApp.ScriptRunner).FullName; //Throws exception here ScriptRunner scriptRunner = domain.CreateInstanceAndUnwrap(asmName, typeName) as ScriptRunner; } catch (SecurityException se) { System.Diagnostics.Debug.WriteLine(se.Message); } catch (Exception ex) { System.Diagnostics.Debug.WriteLine(ex.Message); } } } public class ScriptRunner : MarshalByRefObject { public ScriptRunner() { //A breakpoint placed here is never reached. CompilerParameters param; param = new CompilerParameters(); param.CompilerOptions = ""; param.GenerateExecutable = false; param.GenerateInMemory = true; param.IncludeDebugInformation = false; // C# compiler CSharpCodeProvider codeProvider = new CSharpCodeProvider(); CompilerResults results = codeProvider.CompileAssemblyFromFile(param, "Danger.cs"); } } } The exception is being thrown from mscorlib and it is a System.Reflection.TargetInvocationException that has an inner System.Security.SecurityException. Here is the exception: System.Reflection.TargetInvocationException was unhandled Message=Exception has been thrown by the target of an invocation. Source=mscorlib StackTrace: at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck) at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache) at System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean skipCheckThis, Boolean fillCache) at System.Activator.CreateInstance(Type type, Boolean nonPublic) at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes) at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes) at System.Activator.CreateInstance(String assemblyName, String typeName, Boolean ignoreCase, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes, Evidence securityInfo, StackCrawlMark& stackMark) at System.Activator.CreateInstance(String assemblyName, String typeName) at System.AppDomain.CreateInstance(String assemblyName, String typeName) at System.AppDomain.CreateInstanceAndUnwrap(String assemblyName, String typeName) at System.AppDomain.CreateInstanceAndUnwrap(String assemblyName, String typeName) at ConsoleApp.Program.Main(String[] args) in C:\Documents and Settings\NaultyCS\my documents\visual studio 2010\Projects\ConsoleApplication4\ConsoleApplication4\Program.cs:line 46 at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart() InnerException: System.Security.SecurityException Message=Request failed. Source=ConsoleApplication4 GrantedSet=<PermissionSet class="System.Security.PermissionSet" version="1"> <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="Execution"/> </PermissionSet> PermissionState=<PermissionSet class="System.Security.PermissionSet" version="1" Unrestricted="true"/> RefusedSet="" Url=file:///C:/Documents and Settings/NaultyCS/my documents/visual studio 2010/Projects/ConsoleApplication4/ConsoleApplication4/bin/Debug/ConsoleApplication4.EXE StackTrace: at ConsoleApp.ScriptRunner..ctor() InnerException: So it appears to me that mscorlib is demanding full trust. I've added it as a fully trusted assembly, but it has no effect. What am I doing wrong here?

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