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  • Using memorystream and DotNetZip in MVC gives "Cannot access a closed Stream"

    - by Frode Lillerud
    I'm trying to create a zipfile in a MVC method using the DotNetZip components. Here is my code: public FileResult DownloadImagefilesAsZip() { using (var memoryStream = new MemoryStream()) { using (var zip = new ZipFile()) { zip.AddDirectory(Server.MapPath("/Images/")); zip.Save(memoryStream); return File(memoryStream, "gzip", "images.zip"); } } } When I run it I get a "Cannot access a closed Stream" error, and I'm not sure why.

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  • Datamapper, defining your own object methods, how?

    - by Dublinclontarf
    So lets say I have a class like below class List include DataMapper::Resource property :id, Serial property :username, String def self.my_username return self[:username] end end list=List.create(:username=>,'jim') list.my_username When I run this it tells me that the method cannot be found, and on more investigation that you can only define class methods(not object methods) and that class methods don't have access to objects data. Is there any way to have these methods included as object methods and get access to object data? I'm using Ruby 1.8.6 and the latest version of datamapper.

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  • Bang Notation and Dot Notation in VBA and MS-Access

    - by Nitrodist
    While perusing an application that I'm documenting, I've run across some examples of bang notation in accessing object properties/methods, etc. and in other places they use dot notation for what seems like the same purpose. Is there a difference or preference to using one or the other? Some simple googling only reveals limited information on the subject with some people actually using it in opposite cases. Perhaps there is a coding standards section from MS somewhere that indicates the method of madness?

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  • org.hibernate.MappingException: Unknown entity:

    - by tsegay
    I tried to see all the questions on this topic but none of them helped me. And I really want to understand what is going on with my code. I have a standalone application which uses spring and Hibernate as JPA and I am trying to run the test using a single main Class My main class package edu.acct.tsegay.common; import edu.acct.tsegay.model.User; import edu.acct.tsegay.business.IUserBusinessObject; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class App { public static void main(String[] args) { try { ApplicationContext context = new ClassPathXmlApplicationContext( "Spring3AndHibernate-servlet.xml"); IUserBusinessObject userBusinessObject = (IUserBusinessObject) context .getBean("userBusiness"); User user = (User) context.getBean("user1"); user.setPassword("pass"); user.setUsername("tsegay"); System.out.println(user.getPassword()); userBusinessObject.delete(user); User user2 = new User(); user2.setUsername("habest"); user2.setPassword("pass1"); System.out.println(user2.getPassword()); /* * userBusinessObject.save(user2); * * User user3 = userBusinessObject.searchUserbyId("tsegay"); * System.out.println("Search Result: " + user3.getUsername()); */ System.out.println("Success"); } catch (Exception e) { e.printStackTrace(); } } } my application context is: <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd"> <!-- data source --> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver" /> <property name="url" value="jdbc:mysql://localhost:3306/test" /> <property name="username" value="test" /> <property name="password" value="password" /> </bean> <!-- session factory --> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="dataSource"> <ref bean="dataSource" /> </property> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop> <prop key="hibernate.show_sql">true</prop> </props> </property> </bean> <!-- exposed person business object --> <bean id="userBusiness" class="edu.acct.tsegay.business.UserBusinessObject"> <property name="userDao" ref="userDao" /> </bean> <bean id="user1" class="edu.acct.tsegay.model.User"> <property name="username" value="tse" /> <property name="password" value="pass" /> </bean> <!-- Data Access Object --> <bean id="userDao" class="edu.acct.tsegay.dao.UserDao"> <property name="sessionFactory" ref="sessionFactory" /> </bean> </beans> My User Model is: package edu.acct.tsegay.model; import java.io.Serializable; import javax.persistence.Entity; import javax.persistence.Id; import javax.persistence.Version; import org.hibernate.annotations.NaturalId; @Entity public class User implements Serializable { /** * */ private static final long serialVersionUID = 1L; private String username; private String password; private Integer VERSION; @Version public Integer getVERSION() { return VERSION; } public void setVERSION(Integer vERSION) { VERSION = vERSION; } @NaturalId 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; } } My DAO is: package edu.acct.tsegay.dao; import edu.acct.tsegay.model.User; import org.hibernate.SessionFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.orm.hibernate3.HibernateTemplate; import org.springframework.stereotype.Repository; @Repository public class UserDao implements IUserDao { private SessionFactory sessionFactory; private HibernateTemplate hibernateTemplate; public SessionFactory getSessionFactory() { return sessionFactory; } @Autowired public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; this.hibernateTemplate = new HibernateTemplate(sessionFactory); } public void save(User user) { // TODO Auto-generated method stub // getHibernateTemplate().save(user); this.hibernateTemplate.save(user); } public void delete(User user) { // TODO Auto-generated method stub this.hibernateTemplate.delete(user); } public User searchUserbyId(String username) { // TODO Auto-generated method stub return this.hibernateTemplate.get(User.class, username); } } And this my stacktrace error when i run the program: pass org.springframework.orm.hibernate3.HibernateSystemException: Unknown entity: edu.acct.tsegay.model.User; nested exception is org.hibernate.MappingException: Unknown entity: edu.acct.tsegay.model.User at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:679) at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:412) at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:411) at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374) at org.springframework.orm.hibernate3.HibernateTemplate.delete(HibernateTemplate.java:837) at org.springframework.orm.hibernate3.HibernateTemplate.delete(HibernateTemplate.java:833) at edu.acct.tsegay.dao.UserDao.delete(UserDao.java:34) at edu.acct.tsegay.business.UserBusinessObject.delete(UserBusinessObject.java:30) at edu.acct.tsegay.common.App.main(App.java:23) Caused by: org.hibernate.MappingException: Unknown entity: edu.acct.tsegay.model.User at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:580) at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1365) at org.hibernate.event.def.DefaultDeleteEventListener.onDelete(DefaultDeleteEventListener.java:100) at org.hibernate.event.def.DefaultDeleteEventListener.onDelete(DefaultDeleteEventListener.java:74) at org.hibernate.impl.SessionImpl.fireDelete(SessionImpl.java:793) at org.hibernate.impl.SessionImpl.delete(SessionImpl.java:771) at org.springframework.orm.hibernate3.HibernateTemplate$25.doInHibernate(HibernateTemplate.java:843) at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:406) ... 6 more Please let me know if you need any more of my configuration. Any help is much appreciated..

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  • Objective C BitConverter Equivalent

    - by user352891
    Hi there, I'm wondering if there is an Objective C equivalent to .Net's BitConverter.GetBytes() method. For example, in C#, I can write something like this: byte[] lengthPrefix = BitConverter.GetBytes(message.length); What would the equivalent be in Objective C? Some example code would be greatly appreciated. Thanks in advance.

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  • Java: random long number in 0 <= x < n range.

    - by Vilius Normantas
    Random class has a method to generate random int in a given range. For example: Random r = new Random(); int x = r.nextInt(100); This would generate an int number more or equal to 0 and less than 100. I'd like to do exactly the same with long number. long y = magicRandomLongGenerator(100); Random class has only nextLong(), but it doesn't allow to set range.

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  • java memory management

    - by pavlos
    i have the following code snapshot: public void getResults( String expression, String collection ){ ReferenceList list; Vector lists = new Vector(); list = invertedIndex.get( 1 )//invertedIndex is class member lists.add(list); } when the method is finished, i supose that the local objects ( list, lists) are "destroyed". Can you tell if the memory occupied by list stored in invertedIndex is released as well? Or does java allocate new memory for list when assigning list = invertedIndex.get( 1 );

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  • Sending Bulk Emails using PHP

    - by Rose
    Hi All I have to send mails to all users in the site when a new user joins. My problem is the script stops execution after sending around 400 mails. I have set the set_time_limit to 0. And also I am giving sleep(2) after sending 10 mails. What may be the reason behind this issue.Any solution for this problem . Is there any better method to send bulk emails? Thanks in Advance Rose

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  • Spring MVC Best Practice Handling Unrecoverable Exceptions In Controller

    - by jboyd
    When you have a controller that does logic with services and DAO's that may throw an unrecoverable exception, what is the best practice in dealing with those method calls? Currently an app I'm working on has very lengthy try catch methods that simply err.out exception messages, this doesn't seem very robust and I think that this code smells, is there any cookie cutter best practice for handling this in spring-mvc?

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  • TypeError #1009, XML and AS3

    - by VideoDnd
    My animation is advanced forward, but it's frozen. It throws a TypeError #1009. How do I get rid of this error and get it to play? ERROR TypeError: Error #1009: Cannot access a property or method of a null object reference. at _fla::MainTimeline/frame1() TypeError: Error #1009: Cannot access a property or method of a null object reference. at _fla::MainTimeline/incrementCounter() at flash.utils::Timer/_timerDispatch() at flash.utils::Timer/tick() download http://sandboxfun.weebly.com/ XML <?xml version="1.0" encoding="utf-8"?> <SESSION> <TIMER TITLE="speed">1000</TIMER> <COUNT TITLE="starting position">10000</COUNT> </SESSION> FLA //DynamicText 'Count' var timer:Timer = new Timer(10); var count:int = 0; var fcount:int = 0; timer.addEventListener(TimerEvent.TIMER, incrementCounter); timer.start(); function incrementCounter(event:TimerEvent) { count = myXML.COUNT.text(); count++; fcount=int(count*count/1000); mytext.text = formatCount(fcount); } function formatCount(i:int):String { var fraction:int = i % 100; var whole:int = i / 100; return ("0000000" + whole).substr(-7, 7) + "." + (fraction < 10 ? "0" + fraction : fraction); } //LOAD XML var myXML:XML; var myLoader:URLLoader = new URLLoader(); myLoader.load(new URLRequest("time.xml")); myLoader.addEventListener(Event.COMPLETE, processXML); /*------CHANGED TIMER VALUE WITH XML------*/ timer = new Timer( Number(myXML.TIMER.text()) ); //timer.start(); //PARSE XML function processXML(e:Event):void { myXML = new XML(e.target.data); trace(myXML.COUNT.text()); trace(myXML.TIMER.text()); } //var count:int = 0;//give it a value type /*------CHANGED COUNT VALUE WITH XML------*/ count = myXML.COUNT.text();

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  • ASP.NET 4.0 Routing and Subfolders

    - by IrishChieftain
    I have a folder structure like this: Site/About/About.aspx I have a link in a user control like this: <a href="~/About/About" id="aboutLink" title="About" runat="server">About</a> And in my RegisterRoutes() method, I have this: routes.MapPageRoute("", "About/About/", "~/About/About.aspx"); It works but produces the following URL: Site/About/About What I would like is this: Site/About Is this possible with out-of-the-box 4.0 routing?

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  • Replacing multiple characters in C#

    - by Yassin
    How would i write a program, using the replace method, that rotates the vowels in a word? meaning the letter 'a' would be 'e', 'e' would be 'i', 'i' would be 'o', 'o' would be 'u', and finally 'u' would be 'a'. For example, the word "instructor" would be "onstractur". I hope someone can answer my problem.

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  • will_paginate with named_scopes

    - by Lowgain
    I'm using will_paginate for pagination, which has been working well so far, except for this one thing. If I try to paginate a scope, for instance class User < ActiveRecord::Base named_scope :scope, lambda { etc } end User.scope.paginate({:page => params[:page], :per_page => 10}) That will tell me paginate is an undefined method. I'd rather not have to use a second solution for only this scope, is there something I can do here?

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  • iPhone OS: Tap status bar to scroll to top doesn't work after remove/add back

    - by avocade
    Using this method to hide the status bar: [[UIApplication sharedApplication] setStatusBarHidden:YES animated:YES]; When setting "hidden" back to NO, the tap-to-scroll-to-top (in UIWebView, UITableView, whatever) doesn't work any more, and requires a restart of the app to get the functionality back. Is this a bug (I filed a rdar anyhow) or have I missed a step? Should I perhaps expect this behavior since the statusBar "loses touch" somehow with the respective view?

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  • jqGrid search/filter data api

    - by McLovin
    I've already read all available documentation and I cannot find a solution. I have a calendar outside of the grid which on click returns a date. All I need to do is filter my jqGrid based on that date. Can someone point me to the correct API method? Thanks!

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  • ASP.NET MVC Login ReturnUrl always NULL?

    - by aherrick
    Using Forms Authentication in ASP.NET MVC when trying to log back into a site, it puts a ReturnUrl parameter in the query string. My Logon action method accepts a "returnUrl" string. However it seems that returnUrl string is always null, even when it is clearly in the query string. Any thoughts on why this might be the case or a possible fix?

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  • How to determine an invalid CFSocket

    - by Chris
    Hi Everyone, how can I avoid, to send data via CFSocketSendData to an invalid socket? I've try to determine the socket state with CFSockerIsValid, but this method returns still true when the other side is close. So how can I determine if the socket is valid? In order so avoid Errors. Thank Chris

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  • Codeigniter Best Practices for Model functions

    - by user270797
    Say my application has a "Posts" model, and one of the function is add_post(), it might be something like: function add_post($data) { $this-db-insert('posts',$data); } Where $data is an array: $data = array ('datetime'='2010-10-10 01:11:11', 'title'='test','body'='testing'); Is this best practice? It means if you use that function you need to know the names of the database fields where as my understanding of OOP is that you shouldnt need to know how the method works etc etc

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