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• iPhone SDK linking errors with static library

  - by Nico

  Hello all! I've built my own static library with components to be reused in my project, and recently had the need to update a bunch of classes. Specifically, some methods' signatures were changed due to the fact that some classes changed names. What happens now is that the library compiles fine on its own, but, when added to an app project, the project fails to link: Ld build/Sucursales.build/Debug-iphoneos/Sucursales.build/Objects-normal/armv6/Sucursales normal armv6 cd /Users/nameghino/src/Sucursales setenv IPHONEOS_DEPLOYMENT_TARGET 3.1 setenv PATH "/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2 -arch armv6 -isysroot /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.2.sdk -L/Users/nameghino/src/Sucursales/build/Debug-iphoneos -L/Users/nameghino/src/Sucursales/../../Library/MyLibraries/MSSharedLibrary-1.0.0 -F/Users/nameghino/src/Sucursales/build/Debug-iphoneos -filelist /Users/nameghino/src/Sucursales/build/Sucursales.build/Debug-iphoneos/Sucursales.build/Objects-normal/armv6/Sucursales.LinkFileList -dead_strip -lxml2 -ObjC -all_load -miphoneos-version-min=3.1 -framework Foundation -framework UIKit -framework CoreGraphics -lsqlite3.0 -framework CoreLocation -framework MapKit -lxml2 /Users/nameghino/src/MSSharedComponents/Frameworks/MSSharedLibrary/build/Debug-iphoneos/libMSSharedLibrary.a -o /Users/nameghino/src/Sucursales/build/Sucursales.build/Debug-iphoneos/Sucursales.build/Objects-normal/armv6/Sucursales Undefined symbols: "_OBJC_CLASS_$_DataCatalogService_GetSingleRow", referenced from: objc-class-ref-to-DataCatalogService_GetSingleRow in libMSSharedLibrary.a(MSDataCatalogSpecification.o) **"_OBJC_CLASS_$_DataCatalogService_ArrayOfString", referenced from: objc-class-ref-to-DataCatalogService_ArrayOfString in libMSSharedLibrary.a(MSDataCatalogSpecification.o) "_OBJC_CLASS_$_DataCatalogService_GetSingleRowResponse", referenced from: objc-class-ref-to-DataCatalogService_GetSingleRowResponse in libMSSharedLibrary.a(MSSingleRowResultsParser.o) "_OBJC_CLASS_$_DataCatalogService_GetMultiRowResponse", referenced from: objc-class-ref-to-DataCatalogService_GetMultiRowResponse in libMSSharedLibrary.a(MSMultiRowResultsParser.o) "_OBJC_CLASS_$_DataCatalogService_GetMultiRow", referenced from: objc-class-ref-to-DataCatalogService_GetMultiRow in libMSSharedLibrary.a(MSDataCatalogSpecification.o) "_OBJC_CLASS_$_DataCatalogService_HelloWorldResponse", referenced from: objc-class-ref-to-DataCatalogService_HelloWorldResponse in libMSSharedLibrary.a(DataCatalogService.o) ld: symbol(s) not found collect2: ld returned 1 exit status** The curious thing is that after a lot of project cleanups (both in the app and the lib projects), I still get the same issue. Even after starting a new project, the problem is still there. I've also taken care to restart Xcode between a clean and a build a couple of times, but no good. Any ideas on where to look? Thanks in advance Nico

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• JPA 2 and Hibernate 3.5.1 MEMBER OF query doesnt work.

  - by Ed_Zero

  I'm trying the following JPQL and it fails misserably: Query query = em.createQuery("SELECT u FROM User u WHERE 'admin' MEMBER OF u.roles"); List users = query.query.getResultList(); I get the following exception: ERROR [main] PARSER.error(454) | <AST>:0:0: unexpected end of subtree java.lang.IllegalArgumentException: org.hibernate.hql.ast.QuerySyntaxException: unexpected end of subtree [SELECT u FROM com.online.data.User u WHERE 'admin' MEMBER OF u.roles] ERROR [main] PARSER.error(454) | <AST>:0:0: expecting "from", found '<ASTNULL>' ... ... Caused by: org.hibernate.hql.ast.QuerySyntaxException: unexpected end of subtree [SELECT u FROM com.online.data.User u WHERE 'admin' MEMBER OF u.roles] I have Spring 3.0.1.RELEASE, Hibernate 3.5.1-Final and maven to glue dependencies. User class: @Entity public class User { @Id @Column(name = "USER_ID") @GeneratedValue(strategy = GenerationType.IDENTITY) private long id; @Column(unique = true, nullable = false) private String username; private boolean enabled; @ElementCollection private Set<String> roles = new HashSet<String>(); ... } Spring configuration: <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/tx/spring-context-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd"> <!-- Reading annotation driven configuration --> <tx:annotation-driven transaction-manager="transactionManager" /> <bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor" /> <bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" /> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="${jdbc.driverClassName}" /> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> <property name="maxActive" value="100" /> <property name="maxWait" value="1000" /> <property name="poolPreparedStatements" value="true" /> <property name="defaultAutoCommit" value="true" /> </bean> <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"> <property name="entityManagerFactory" ref="entityManagerFactory" /> <property name="dataSource" ref="dataSource" /> </bean> <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="jpaVendorAdapter"> <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"> <property name="showSql" value="true" /> <property name="databasePlatform" value="${hibernate.dialect}" /> </bean> </property> <property name="loadTimeWeaver"> <bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" /> </property> <property name="jpaProperties"> <props> <prop key="hibernate.hbm2ddl.auto">update</prop> <prop key="hibernate.current_session_context_class">thread</prop> <prop key="hibernate.cache.provider_class">org.hibernate.cache.NoCacheProvider</prop> <prop key="hibernate.show_sql">true</prop> <prop key="hibernate.format_sql">false</prop> <prop key="hibernate.show_comments">true</prop> </props> </property> <property name="persistenceUnitName" value="punit" /> </bean> <bean id="JpaTemplate" class="org.springframework.orm.jpa.JpaTemplate"> <property name="entityManagerFactory" ref="entityManagerFactory" /> </bean> </beans> Persistence.xml <?xml version="1.0" encoding="UTF-8"?> <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence"> <persistence-unit name="punit" transaction-type="RESOURCE_LOCAL" /> </persistence> pom.xml maven dependencies. <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate</artifactId> <version>${hibernate.version}</version> <type>pom</type> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core</artifactId> <version>${hibernate.version}</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-annotations</artifactId> <version>${hibernate.version}</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-entitymanager</artifactId> <version>${hibernate.version}</version> </dependency> <dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version>1.2.2</version> <type>jar</type> </dependency> <dependency> <groupId>org.springframework.security</groupId> <artifactId>spring-security-web</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework.security</groupId> <artifactId>spring-security-config</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework.security</groupId> <artifactId>spring-security-taglibs</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.springframework.security</groupId> <artifactId>spring-security-acl</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>javax.annotation</groupId> <artifactId>jsr250-api</artifactId> <version>1.0</version> </dependency> <properties> <!-- Application settings --> <spring.version>3.0.1.RELEASE</spring.version> <hibernate.version>3.5.1-Final</hibernate.version> Im running a unit test to check the configuration and I am able to run other JPQL queries the only ones that I am unable to run are the IS EMPTY, MEMBER OF conditions. The complete unit test is as follows: TestIntegration @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations = { "/spring/dataLayer.xml"}) @Transactional @TransactionConfiguration public class TestUserDaoImplIntegration { @PersistenceContext private EntityManager em; @Test public void shouldTest() throws Exception { try { //WORKS Query query = em.createQuery("SELECT u FROM User u WHERE 'admin' in elements(u.roles)"); List users = query.query.getResultList(); //DOES NOT WORK } catch (Exception e) { e.printStackTrace(); throw e; } try { Query query = em.createQuery("SELECT u FROM User u WHERE 'admin' MEMBER OF u.roles"); List users = query.query.getResultList(); } catch (Exception e) { e.printStackTrace(); throw e; } } }

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• Fluent NHibernate is bringing ClassMap Id and SubClassMap Id to referenced table?

  - by Andy

  HI, I have the following entities I'm trying to map: public class Product { public int ProductId { get; private set; } public string Name { get; set; } } public class SpecialProduct : Product { public ICollection<Option> Options { get; private set; } } public class Option { public int OptionId { get; private set; } } And the following mappings: public class ProductMap : ClassMap<Product> { public ProductMap() { Id( x => x.ProductId ); Map( x => x.Name ); } public class SpecialProductMap : SubclassMap<SpecialProduct> { public SpecialProductMap() { Extends<ProductMap>(); HasMany( p => p.Options ).AsSet().Cascade.SaveUpdate(); } } public class OptionMap : ClassMap<Option> { public OptionMap() { Id( x => x.OptionId ); } } The problem is that my tables end up like this: Product -------- ProductId Name SpecialProduct -------------- ProductId Option ------------ OptionId ProductId // This is wrong SpecialProductId // This is wrong There should only be the one ProductId and single reference to the SpecialProduct table, but we get "both" Ids and two references to SpecialProduct.ProductId. Any ideas? Thanks Andy

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• Populating Models from other Models in Django?

  - by JT

  This is somewhat related to the question posed in this question but I'm trying to do this with an abstract base class. For the purposes of this example lets use these models: class Comic(models.Model): name = models.CharField(max_length=20) desc = models.CharField(max_length=100) volume = models.IntegerField() ... <50 other things that make up a Comic> class Meta: abstract = True class InkedComic(Comic): lines = models.IntegerField() class ColoredComic(Comic): colored = models.BooleanField(default=False) In the view lets say we get a reference to an InkedComic id since the tracer, err I mean, inker is done drawing the lines and it's time to add color. Once the view has added all the color we want to save a ColoredComic to the db. Obviously we could do inked = InkedComic.object.get(pk=ink_id) colored = ColoredComic() colored.name = inked.name etc, etc. But really it'd be nice to do: colored = ColoredComic(inked_comic=inked) colored.colored = True colored.save() I tried to do class ColoredComic(Comic): colored = models.BooleanField(default=False) def __init__(self, inked_comic = False, *args, **kwargs): super(ColoredComic, self).__init__(*args, **kwargs) if inked_comic: self.__dict__.update(inked_comic.__dict__) self.__dict__.update({'id': None}) # Remove pk field value but it turns out the ColoredComic.objects.get(pk=1) call sticks the pk into the inked_comic keyword, which is obviously not intended. (and actually results in a int does not have a dict exception) My brain is fried at this point, am I missing something obvious, or is there a better way to do this?

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• Spring Test / JUnit problem - unable to load application context

  - by HDave

  I am using Spring for the first time and must be doing something wrong. I have a project with several Bean implementations and now I am trying to create a test class with Spring Test and JUnit. I am trying to use Spring Test to inject a customized bean into the test class. Here is my test-applicationContext.xml: <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="............."> <bean id="MyUuidFactory" class="com.myapp.UuidFactory" scope="singleton" > <property name="typeIdentifier" value="CLS" /> </bean> <bean id="ThingyImplTest" class="com.myapp.ThingyImplTest" scope="singleton"> <property name="uuidFactory"> <idref local="MyUuidFactory" /> </property> </bean> </beans> The injection of MyUuidFactory instance goes along with the following code from within the test class: private UuidFactory uuidFactory; public void setUuidFactory(UuidFactory uuidFactory) { this.uuidFactory = uuidFactory; } However, when I go to run the test (in Eclipse or command line) I get the following error (stack trace omitted for brevity): Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'MyImplTest' defined in class path resource [test-applicationContext.xml]: Initialization of bean failed; nested exception is org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'java.lang.String' to required type 'com.myapp.UuidFactory' for property 'uuidFactory'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [java.lang.String] to required type [com.myapp.UuidFactory] for property 'uuidFactory': no matching editors or conversion strategy found Funny thing is, the Eclipse/Spring XML editor shows errors of I misspell any of the types or idrefs. If I leave the bean in, but comment out the dependency injection, everything work until I get a NullPointerException while running the test...which makes sense.

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• jQuery hover menu not disappearing

  - by Nathan Loding

  I have a basic menu using some nested UL's, which is pretty standard I think. When hovering over an LI from the "root" menu, I want the UL within that LI to display. Move the mouse off or to another LI, it shows that submenu. Move down to the submenu and it stays while you hover over each element. I had it working with a simple jQuery.hover() set, but then I ran into issues. When on a page, the "root" menu item is given a class of 'current-page' and if that class exists, I want it to display that submenu statically after a mouseout. Hope I explained that well enough. I just tossed a variable into the hover functions so on the mouseout it ran a .show() on the current-page's submenu. Easy. Except that when I move the mouse between the individual LI's of the submenu, it changes back to the current-page submenu. So I attempted to add a timer element based on another question here. That made things worse -- now the submenus just don't disappear. Here's my CSS, markup, and JS ... how the heck do I make this work properly? Markup: <div id="menu"> <div id="navbar"> <ul id="firstmenu"> <li> <a href="http://localhost/site/pageone">page one</a> <ul class="submenu"> <li><a href="http://localhost/site/pageone/subone">subone</a></li> <li><a href="http://localhost/site/pageone/subtwo">subtwo</a></li> <li><a href="http://localhost/site/pageone/subthree">subthree</a></li> <li><a href="http://localhost/site/pageone/subfour">subfour</a></li> <li><a href="http://localhost/site/pageone/subfive">subfive</a></li> </ul> </li> <li> <a href="http://localhost/site/pagetwo">barely there</a> <ul class="submenu"> <li><a href="http://localhost/site/pageone/subone">subone</a></li> <li><a href="http://localhost/site/pageone/subtwo">subtwo</a></li> <li><a href="http://localhost/site/pageone/subthree">subthree</a></li> <li><a href="http://localhost/site/pageone/subfour">subfour</a></li> <li><a href="http://localhost/site/pageone/subfive">subfive</a></li> </ul> </li> <li class="current-page"> <a href="http://localhost/site/pagetwo">kith & kin</a> <ul class="submenu"> <li><a href="http://localhost/site/pageone/subone">subone</a></li> <li><a href="http://localhost/site/pageone/subtwo">subtwo</a></li> <li><a href="http://localhost/site/pageone/subthree">subthree</a></li> <li><a href="http://localhost/site/pageone/subfour">subfour</a></li> <li><a href="http://localhost/site/pageone/subfive">subfive</a></li> </ul> </li> <li> <a href="http://localhost/site/pagethree">focal point</a> <ul class="submenu"> <li><a href="http://localhost/site/pageone/subone">subone</a></li> <li><a href="http://localhost/site/pageone/subtwo">subtwo</a></li> <li><a href="http://localhost/site/pageone/subthree">subthree</a></li> <li><a href="http://localhost/site/pageone/subfour">subfour</a></li> <li><a href="http://localhost/site/pageone/subfive">subfive</a></li> </ul> </li> <li> <a href="http://localhost/site/pagefour">products</a> <ul class="submenu"> <li><a href="http://localhost/site/pageone/subone">subone</a></li> <li><a href="http://localhost/site/pageone/subtwo">subtwo</a></li> <li><a href="http://localhost/site/pageone/subthree">subthree</a></li> <li><a href="http://localhost/site/pageone/subfour">subfour</a></li> <li><a href="http://localhost/site/pageone/subfive">subfive</a></li> </ul> </li> <li> <a href="http://localhost/site/pagefive">clients</a> </li> </ul> </div></div> And here's the CSS: #navbar { margin: 0; padding: 0; border: 0; text-align: center; } #firstmenu { margin: 6px auto 0 auto; font-size: 16px; list-style-type: none; letter-spacing: -1px; } #firstmenu li { display: inline; position:relative; overflow: hidden; text-align: center; margin-right: 10px; padding: 5px 15px; } #firstmenu a { text-decoration: none; outline: none; color: black; font-weight: 700; width: 75px; cursor: pointer; } .current-page { color: white; background: url(../images/down_arrow.png) bottom center no-repeat; } .current-page a { color: white; border-bottom: 1px solid black; } #firstmenu .current-page a { color: white; } #firstmenu li.hover { color: white; background: url(../images/down_arrow.png) bottom center no-repeat; } #firstmenu li.hover a { color: white; border-bottom: 1px solid black; } #firstmenu li ul li.hover { color: white; background: none; } #firstmenu li ul li.hover a { color: white; border-bottom: none; text-decoration: underline; } #firstmenu li ul { width: 900px; color: white; font-size: .8em; margin-top: 3px; padding: 5px; position: absolute; display: none; } #firstmenu li ul li { list-style: none; display: inline; width: auto; } #firstmenu li ul li a { color: white; font-weight: normal; border: none; } .sub-current-page { font-weight: bold; text-decoration: underline; } #firstmenu li ul li.sub-current-page a { font-weight: bold; } And lastly, my not-at-all-working JS (this is in a $(document).ready(), of course): // Initialize some variables var hideSubmenuTimer = null; var current_page; $('.current-page ul:first').show(); // Prep the menu $('#firstmenu li').hover(function() { // Clear the timeout if it exists if(hideSubmenuTimer) { clearTimeout(hideSubmenuTimer); } // Check if there's a current-page class set if($('li.current-page').length > 0) { current_page = $('li.current-page'); } else { current_page = false; } // If there's a current-page class, hide it if(current_page) { current_page.children('ul:first').hide(); } // Show the new submenu $(this).addClass('hover').children('ul:first').show(); }, function(){ // Just in case var self = this; // Clear the timeout if it exists if(hideSubmenuTimer) { clearTimeout(hideSubmenuTimer); } // Check if there's a current-page class set if($('li.current-page').length > 0) { current_page = $('li.current-page'); } else { current_page = false; } // Set a timeout on hiding the submenu hideSubmenuTimer = setTimeout(function() { // Hide the old submenu $(self).removeClass('hover').children('ul').hide(); // If there's a current-page class, show it if(current_page) { current_page.children('ul:first').show(); current_page.css('color', 'white'); } }, 500); }); So what am I doing so wrong? As a side note, I'm using the $('.current-page ul:first').show() because if I gave .current-page any "display" setting in the CSS, it positioned it really weirdly on the page.

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• Custom ViewModel with MVC 2 Strongly Typed HTML Helpers return null object on Create ?

  - by Barbaros Alp

  Hi, I am having a trouble while trying to create an entity with a custom view modeled create form. Below is my custom view model for Category Creation form. public class CategoryFormViewModel { public CategoryFormViewModel(Category category, string actionTitle) { Category = category; ActionTitle = actionTitle; } public Category Category { get; private set; } public string ActionTitle { get; private set; } } and this is my user control where the UI is <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<CategoryFormViewModel>" %> <h2> <span><%= Html.Encode(Model.ActionTitle) %></span> </h2> <%=Html.ValidationSummary() %> <% using (Html.BeginForm()) {%> <p> <span class="bold block">Baslik:</span> <%=Html.TextBoxFor(model => Model.Category.Title, new { @class = "width80 txt-base" })%> </p> <p> <span class="bold block">Sira Numarasi:</span> <%=Html.TextBoxFor(model => Model.Category.OrderNo, new { @class = "width10 txt-base" })%> </p> <p> <input type="submit" class="btn-admin cursorPointer" value="Save" /> </p> <% } %> When i click on save button, it doesnt bind the category for me because of i am using custom view model and strongly typed html helpers like that <%=Html.TextBoxFor(model => Model.Category.OrderNo) %> How can i fix this ? Thanks in advance

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• Problem resolving a generic Repository with Entity Framework and Castle Windsor Container

  - by user368776

  Hi, im working in a generic repository implementarion with EF v4, the repository must be resolved by Windsor Container. First the interface public interface IRepository<T> { void Add(T entity); void Delete(T entity); T Find(int key) } Then a concrete class implements the interface public class Repository<T> : IRepository<T> where T: class { private IObjectSet<T> _objectSet; } So i need _objectSet to do stuff like this in the previous class public void Add(T entity) { _objectSet.AddObject(entity); } And now the problem, as you can see im using a EF interface like IObjectSet to do the work, but this type requires a constraint for the T generic type "where T: class". That constrait is causing an exception when Windsor tries to resolve its concrete type. Windsor configuration look like this. <castle> <components> <component id="LVRepository" service="Repository.Infraestructure.IRepository`1, Repository" type="Repository.Infraestructure.Repository`1, Repository" lifestyle="transient"> </component> </components> The container resolve code IRepository<Product> productsRep =_container.Resolve<IRepository<Product>>(); Now the exception im gettin System.ArgumentException: GenericArguments[0], 'T', on 'Repository.Infraestructure.Repository`1[T]' violates the constraint of type 'T'. ---> System.TypeLoadException: GenericArguments[0], 'T', on 'Repository.Infraestructure.Repository`1[T]' violates the constraint of type parameter 'T'. If i remove the constraint in the concrete class and the depedency on IObjectSet (if i dont do it get a compile error) everything works FINE, so i dont think is a container issue, but IObjectSet is a MUST in the implementation. Some help with this, please.

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• JQTOUCH, Binding to links pulled in via AJAX, to make another AJAX call? Possible?

  - by nobosh

  Hello. I'm using JQTOUCH using the AJAX example provided in the demo: $('#customers').bind('pageAnimationEnd', function(e, info){ if (!$(this).data('loaded')) { // Make sure the data hasn't already been loaded (we'll set 'loaded' to true a couple lines further down) $('.loadingscreen').css({'display':'block'}); $(this).append($('<div> </div>'). // Append a placeholder in case the remote HTML takes its sweet time making it back load('/mobile/ajax/customers/ .info', function() { // Overwrite the "Loading" placeholder text with the remote HTML $(this).parent().data('loaded', true); // Set the 'loaded' var to true so we know not to re-load the HTML next time the #callback div animation ends $('.loadingscreen').css({'display':'none'}); })); } }); This then returns a nice UL which outputs just fine.. <ul class="edgetoedge"> <li class="viewaction" id="715"> <span class="Title"><a href="/c-view/715/">Lorem Ipsum is simply dummy text of the...</a></span> <div class="meta"> <span class="dateAdded"> 1d ago </span> </div> </li> </ul> This is where I get stuck. How can I then make it so when you click on the link above, it loads the URL wrapped near the class="Title" ? I'd like it to load JQTouch like the first code example. I tried the following two things without success: $('.viewaction').bind('click', function() { alert('wow'); }); $('.viewaction').live('pageAnimationEnd', function(e, info){ }); Thank you!

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• Singletons, thread safety and structuremap

  - by Ben

  Hi, Currently I have the following class: public class PluginManager { private static bool s_initialized; private static object s_lock = new object(); public static void Initialize() { if (!s_initialized) { lock (s_lock) { if (!s_initialized) { // initialize s_initialized = true; } } } } } The important thing here is that Initialize() should only be executed once whilst the application is running. I thought that I would refactor this into a singleton class since this would be more thread safe?: public sealed class PluginService { static PluginService() { } private static PluginService _instance = new PluginService(); public static PluginService Instance { get { return _instance; } } private bool s_initialized; public void Initialize() { if (!s_initialized) { // initialize s_initialized = true; } } } Question one, is it still necessary to have the lock here (I have removed it) since we will only ever be working on the same instance? Finally, I want to use DI and structure map to initialize my servcices so I have refactored as below: public interface IPluginService { void Initialize(); } public class NewPluginService : IPluginService { private bool s_initialized; public void Initialize() { if (!s_initialized) { // initialize s_initialized = true; } } } And in my registry: ForRequestedType<IPluginService>() .TheDefaultIsConcreteType<NewPluginService>().AsSingletons(); This works as expected (singleton returning true in the following code): var instance1 = ObjectFactory.GetInstance<IPluginService>(); var instance2 = ObjectFactory.GetInstance<IPluginService>(); bool singleton = (instance1 == instance2); So my next question, is the structure map solution as thread safe as the singleton class (second example). The only downside is that this would still allow NewPluginService to be instantiated directly (if not using structure map). Many thanks, Ben

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• Map NHibernate entity to multiple tables based on parent

  - by Programming Hero

  I'm creating a domain model where entities often (but not always) have a member of type ActionLog. ActionLog is a simple class which allows for an audit trail of actions being performed on an instance. Each action is recorded as an ActionLogEntry instance. ActionLog is implemented (approximately) as follows: public class ActionLog { public IEnumerable<ActionLogEntry> Entries { get { return EntriesCollection; } } protected ICollection<ActionLogEntry> EntriesCollection { get; set; } public void AddAction(string action) { // Append to entries collection. } } What I would like is to re-use this class amongst my entities and have the entries map to different tables based on which class they are logged against. For example: public class Customer { public ActionLog Actions { get; protected set; } } public class Order { public ActionLog Actions { get; protected set; } } This design is suitable for me in the application, however I can't see a clear way to map this scenario to a database with NHibernate. I typically use Fluent NHibernate for my configuration, but I'm happy to accept answers in more general HBM xml.

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• NHibernate. Distinct parent child fetching

  - by Andrew Kalashnikov

  Hello. I've got common NH mapping; <class name="Order, SummaryOrder.Core" table='order'> <id name="Id" unsaved-value="0" type="int"> <column name="id" not-null="true"/> <generator class="native"/> </id> <many-to-one name="Client" class="SummaryOrderClient, SummaryOrder.Core" column="summary_order_client_id" cascade="none"/> <many-to-one name="Provider" class="SummaryOrderClient, SummaryOrder.Core" column="summary_order_provider_id" cascade="none"/> <set name="Items" cascade="all"> <key column="order_id"/> <one-to-many class="OrderItem, Clients.Core" /> </set> </class> Want get list by this criteria ICriteria criteria = NHibernateStateLessSession.CreateCriteria(typeof(SummaryOrder.Core.Domains.Order)); ; criteria.Add(Restrictions.Or (Restrictions.Eq(String.Format("{0}.Id", SummaryOrder.Core.Domains.Order.Properties.Client), idClient), Restrictions.Eq(String.Format("{0}.Id", SummaryOrder.Core.Domains.Order.Properties.Provider), idClient))). SetResultTransformer(new DistinctRootEntityResultTransformer()). SetFetchMode(SummaryOrder.Core.Domains.Order.Properties.Items, FetchMode.Join); return criteria.List<SummaryOrder.Core.Domains.Order>() as List<SummaryOrder.Core.Domains.Order> But I've got duplicates.. When I execute One restriction (without OR) I got distinct collection of orders, but Restriction OR brakes my query. I wanna get distinct(at client yet) collection of orders. What's wrong. Please HELP!

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• How to write an asmx web service without using app_code directory?

  - by JL

  Excuse the title, but it's best I just explain the problem. I have 2 projects in my solution A Class Library A Web Application, which consists of a web service (asmx). the web service has code sitting in the app_code folder, with a file [webservicename].cs Inside the webservice code behind class, I have a web method here is a sample example (its simplified): [WebMethod] public EnumTaskExportState ProcessTask() { var tm = new UploadTaskManager(); return tm.ProcessTask(); } Now at design time, in visual studio (2010 or 2008), when I right click on UploadTaskMananger, and then select "Go to definition". I get taken to AppData\Temp[some folder structure]...etc.... and it displays the public class definition. Instead I would like to have complete integration, so that I get taken directly to the actual class in the class library project. My guess is, this is happening because I am using the app_code route, and not a compiled file for the web service class. But I don't know any other way to do this. How can I fix this? Possibly do away with the need for the app_code directory?

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• Fluent NHibernate IDictionary with composite element mapping

  - by Alessandro Di Lello

  Hi there, i have these 2 classes: public class Category { IDictionary<string, CategoryResorce> _resources; } public class CategoryResource { public virtual string Name { get; set; } public virtual string Description { get; set; } } and this is xml mapping <class name="Category" table="Categories"> <id name="ID"> <generator class="identity"/> </id> <map name="Resources" table="CategoriesResources" lazy="false"> <key column="EntityID" /> <index column="LangCode" type="string"/> <composite-element class="Aca3.Models.Resources.CategoryResource"> <property name="Name" column="Name" /> <property name="Description" column="Description"/> </composite-element> </map> </class> and i'd like to write it with Fluent. I found something similar and i was trying with this code: HasMany(x => x.Resources) .AsMap<string>("LangCode") .AsIndexedCollection<string>("LangCode", c => c.GetIndexMapping()) .Cascade.All() .KeyColumn("EntityID"); but i dont know how to map the CategoryResource entity as a composite element inside the Category element. Any advice ? thanks

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• Getting web page after calling DownloadStringAsync()?

  - by OverTheRainbow

  Hello I don't know enough about VB.Net yet to use the richer HttpWebRequest class, so I figured I'd use the simpler WebClient class to download web pages asynchronously (to avoid freezing the UI). However, how can the asynchronous event handler actually return the web page to the calling routine? Imports System.Net Public Class Form1 Private Shared Sub DownloadStringCallback2(ByVal sender As Object, ByVal e As DownloadStringCompletedEventArgs) If e.Cancelled = False AndAlso e.Error Is Nothing Then Dim textString As String = CStr(e.Result) 'HERE : How to return textString to the calling routine? End If End Sub Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim client As WebClient = New WebClient() AddHandler client.DownloadStringCompleted, AddressOf DownloadStringCallback2 Dim uri As Uri = New Uri("http://www.google.com") client.DownloadStringAsync(uri) 'HERE : how to get web page back from callback function? End Sub End Class Thank you. Edit: I added a global, shared variable and a While/DoEvents/EndWhile, but there's got to be a cleaner way to do this :-/ Public Class Form1 Shared page As String Public Shared Sub AlertStringDownloaded(ByVal sender As Object, ByVal e As DownloadStringCompletedEventArgs) ' If the string request went as planned and wasn't cancelled: If e.Cancelled = False AndAlso e.Error Is Nothing Then page = CStr(e.Result) End If End Sub Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim wc As New WebClient AddHandler wc.DownloadStringCompleted, AddressOf AlertStringDownloaded page = Nothing wc.DownloadStringAsync(New Uri("http://www.google.com")) 'Better way to wait until page has been filled? While page Is Nothing Application.DoEvents() End While RichTextBox1.Text = page End Sub End Class

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• lscape and supertabular in Latex

  - by Tim

  Hi, I would like to put pictures into a supertabular table within lscape enviroment. The code is: \newcounter{themenumber} \newcounter{classnumber} \newcounter{imagenumber} \tablefirsthead{ \hline \backslashbox{Concept}{Class} &\multicolumn{3}{|c|}{Class 0} & \multicolumn{3}{|c|}{Class 1} \\ %\textbf{A} & \textbf{B}\\ \hline} \tablehead{ \hline \multicolumn{7}{|l|}{\small\sl continued from previous page}\\ \hline \backslashbox{Concept}{Class} &\multicolumn{3}{|c|}{Class 0} & \multicolumn{3}{|c|}{Class 1} \\ %\textbf{A} & \textbf{B}\\ \hline} \tabletail{ %\hline \multicolumn{7}{|l|}{\small\sl continued on next page}\\ \hline} \tablelasttail{} %\tablelasttail{\hline} \begin{landscape} \begin{supertabular}{| c || c | c | c || c | c | c |} \topcaption{Examples of All the Concepts. \label{tab:conceptsimgs}} \forloop{themenumber}{1}{\value{themenumber} < 24}{ \arabic{themenumber} \forloop{classnumber}{0}{\value{classnumber} < 2}{ \forloop{imagenumber}{1}{\value{imagenumber} < 4}{ & \includegraphics[scale=0.5]{../\arabic{themenumber}/\arabic{classnumber}_\arabic{imagenumber}.eps} } } \\ \hline } \end{supertabular} \end{landscape} However there is something wrong with the result: no caption is shown, the height of the part of table in each page exceeds the page height and there is something extra unwanted at the last page. See images below: page1 page2 page3 page4 How to fix the problems? Thanks and regards!

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• Why should we call SuppressFinalize when we dont have a destructor

  - by somaraj

  I have few Question for which I am not able to get a proper answer . 1) Why should we call SuppressFinalize in the Dispose function when we dont have a destructor . 2) Dispose and finalize are used for freeing resources before the object is garbage collected. Whether it is managed or unmanaged resource we need to free it , then why we need a condition inside the dispose funtion , saying pass 'true' when we call this overriden function from IDisposable:Dispose and pass false when called from a finalize. See the below code i copied from net. class Test : IDisposable { private bool isDisposed = false; ~Test() { Dispose(false); } protected void Dispose(bool disposing) { if (disposing) { // Code to dispose the managed resources of the class } // Code to dispose the un-managed resources of the class isDisposed = true; } public void Dispose() { Dispose(true); GC.SuppressFinalize(this); } } what if I remove the boolean protected Dispose function and implement the as below. class Test : IDisposable { private bool isDisposed = false; ~Test() { Dispose(); } public void Dispose() { // Code to dispose the managed resources of the class // Code to dispose the un-managed resources of the class isDisposed = true; // Call this since we have a destructor . what if , if we dont have one GC.SuppressFinalize(this); } }

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• Binding Data to DataGridView in VB.Net

  - by Peter

  Hi, I have a bit of code which loads data from a stored procedure in MS SQL Server and then loads the data to a datagridview, which works fine. What i want is for the code that connects / loads the data to sit in my Database Class and then everything associated with the datagridview to be stored in my Form but i am having problems passing the contents of the bindingsource over to the Form from the Database Class. Form1 Public Class Form1 Dim myDatabaseObj As New Class1() Dim bindingSource1 As New BindingSource() Dim connectString As New SqlConnection Dim objDataAdapter As New SqlDataAdapter Dim table As New DataTable() Dim tabletest As New DataTable() Private Sub loadCompanyList() Try Me.dgv_CompanyList.DataSource = Me.bindingSource1 getCompanyList() Catch ex As NullReferenceException End Try End Sub Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load loadCompanyList() End Sub End Class Database Class When i try place the getCompanyList() in a class and then create a new object that references the Form() it does not seem to return any value from the table to the MyForm.BindingSource1.Datasource meaning my datagridview displays not data. ..... Private Sub getCompanyList() Try Dim myForm as new Form() connect_Transaction_Database() objDataAdapter.SelectCommand = New SqlCommand() objDataAdapter.SelectCommand.Connection = connectString objDataAdapter.SelectCommand.CommandText = "sp_GetCompanyList" objDataAdapter.SelectCommand.CommandType = CommandType.StoredProcedure Dim commandBuilder As New SqlCommandBuilder(Me.objDataAdapter) Dim table As New DataTable() table.Locale = System.Globalization.CultureInfo.InvariantCulture Me.objDataAdapter.Fill(table) **MyForm.bindingSource1.DataSource = table** Catch ex As DataException MsgBox(ex.Message) Catch ex As NullReferenceException MsgBox(ex.Message) End Try disconnect_Transaction_Database() End Sub If anyone could help. Thank you. Peter

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• boost bind callback function pointer as a parameter

  - by Takashi-kun

  I am trying to pass a function pointer using boost::bind. void Class::ThreadFunction(Type(*callbackFunc)(message_type::ptr&)) { } boost::shared_ptr<boost::thread> Class::Init(Type(*callbackFunc)(message_type::ptr&)) { return boost::shared_ptr<boost::thread> ( new boost::thread(boost::bind(&Class::ThreadFunction, callbackFunc)) ); } I get the following errors: 1>C:\dev\sapphire\boost_1_46_1\boost/bind/mem_fn.hpp(362) : warning C4180: qualifier applied to function type has no meaning; ignored 1>C:\dev\sapphire\boost_1_46_1\boost/bind/mem_fn.hpp(333) : error C2296: '->*' : illegal, left operand has type 'Type (__cdecl **)(message_type::ptr &)' However, I was able to change to the following, it works fine: void ThreadFunction(Type(*callbackFunc)(message_type::ptr&)) { } boost::shared_ptr<boost::thread> Class::Init(Type(*callbackFunc)(message_type::ptr&)) { return boost::shared_ptr<boost::thread> ( new boost::thread(boost::bind(&ThreadFunction, callbackFunc)) ); } Why do I get those errors if I declare the method in the Class class?

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• VS 2008 Service Pack 1 problem

  - by Compiler

  Hi, My OPS is XP and service pack 3 installed.I cant install vs2008 service pack1,In log file i see 'Visual C++ 2008 SP1 Design-Time Components for x86 - KB947888' cant be installed. Error code is 1603.Last part of Installation file is here. Returning IDOK. INSTALLMESSAGE_ERROR [Error 1335. The cabinet file 'patch.cab' required for this installation is corrupt and cannot be used. This could indicate a network error, an error reading from the CD-ROM, or a problem with this package.] [1/12/2009, 10:14:50] (IronSpigot::MsiExternalUiHandler::UiHandler) Returning IDOK. INSTALLMESSAGE_ACTIONSTART [Action 10:14:50: Rollback. Rolling back action:] [1/12/2009, 10:17:29] (IronSpigot::MspInstallerT<class ATL::CStringT<unsigned short,class ATL::StrTraitATL<unsigned short,class ATL::ChTraitsCRT<unsigned short ::PerformMsiOperation) Patch (C:\DOCUME~1\Cem\LOCALS~1\Temp\Microsoft Visual Studio 2008 SP1\VS90sp1-KB945140-X86-ENU.msp; C:\DOCUME~1\Cem\LOCALS~1\Temp\Microsoft Visual Studio 2008 SP1\VC90sp1-KB947888-x86-enu.msp) install failed on product (Microsoft Visual Studio 2008 Professional Edition - ENU). Msi Log: Microsoft Visual Studio 2008 SP1_20090112_100005671-Microsoft Visual Studio 2008 Professional Edition - ENU-MSP0.txt [1/12/2009, 10:17:29] (IronSpigot::MspInstallerT<class ATL::CStringT<unsigned short,class ATL::StrTraitATL<unsigned short,class ATL::ChTraitsCRT<unsigned short ::PerformMsiOperation) MsiApplyMultiplePatches returned 0x643

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• Prepopulating inlines based on the parent model in the Django Admin

  - by Alasdair

  I have two models, Event and Series, where each Event belongs to a Series. Most of the time, an Event's start_time is the same as its Series' default_time. Here's a stripped down version of the models. #models.py class Series(models.Model): name = models.CharField(max_length=50) default_time = models.TimeField() class Event(models.Model): name = models.CharField(max_length=50) date = models.DateField() start_time = models.TimeField() series = models.ForeignKey(Series) I use inlines in the admin application, so that I can edit all the Events for a Series at once. If a series has already been created, I want to prepopulate the start_time for each inline Event with the Series' default_time. So far, I have created a model admin form for Event, and used the initial option to prepopulate the time field with a fixed time. #admin.py ... import datetime class OEventInlineAdminForm(forms.ModelForm): start_time = forms.TimeField(initial=datetime.time(18,30,00)) class Meta: model = OEvent class EventInline(admin.TabularInline): form = EventInlineAdminForm model = Event class SeriesAdmin(admin.ModelAdmin): inlines = [EventInline,] I am not sure how to proceed from here. Is it possible to extend the code, so that the initial value for the start_time field is the Series' default_time?

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• Use UdpClient with IPv4 and IPv6?

  - by mazzzzz

  A little while ago I created a class to deal with my LAN networking programs. I recently upgraded one of my laptops to windows 7 and relized that windows 7 (or at least the way I have it set up) only supports IPv6, but my desktop is still back in the Windows xp days, and only uses IPv4. The class I created uses the UdpClient class, and is currently setup to only work with IPv4.. Is there a way to modify my code to allow sending and receiving of IPv6 and IPv4 packets?? It would be hard to scrap the classes code, a lot of my programs rely on this class. I would like to keep the class as close to its original state, so I don't need to modify my older programs, only switch out the old class for the updated one. Thanks for any and all help, Max Send: using System.Net.Sockets;UdpClient tub = new UdpClient (); tub.Connect ( new IPEndPoint ( ToIP, ToPort ) ); UdpState s = new UdpState (); s.client = tub; s.endpoint = new IPEndPoint ( ToIP, ToPort ); tub.BeginSend ( data, data.Length, new AsyncCallback ( SendCallBack ),s); private void SendCallBack ( IAsyncResult result ) { UdpClient client = (UdpClient)( (UdpState)( result.AsyncState ) ).client; IPEndPoint endpoint = (IPEndPoint)( (UdpState)( result.AsyncState ) ).endpoint; client.EndSend ( result ); } Receive: UdpClient tub = new UdpClient (ReceivePort); UdpState s = new UdpState (); s.client = tub; s.endpoint = new IPEndPoint ( ReceiveIP, ReceivePort ); s.callback = cb; tub.BeginReceive ( new AsyncCallback ( receivedPacket ), s ); public void receivedPacket (IAsyncResult result) { UdpClient client = (UdpClient)( (UdpState)( result.AsyncState ) ).client; IPEndPoint endpoint = (IPEndPoint)( (UdpState)( result.AsyncState ) ).endpoint; Byte[] receiveBytes = client.EndReceive ( result, ref endpoint ); ReceivedPacket = new Packet ( receiveBytes ); client.Close(); //Do what ever with the packets now }

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• Why I am getting a Heap Corruption Error?

  - by vaidya.atul

  I am new to C++. I am getting HEAP CORRUPTION ERROR. Any help will be highly appreciated. Below is my code class CEntity { //some member variables CEntity(string section1,string section2); CEntity(); virtual ~CEntity(); //pure virtual function .. virtual CEntity* create()const =0; }; I derive CLine from CEntity as below class CLine:public CEntity { // Again some variables ... // Constructor and destructor CLine(string section1,string section2); CLine(); ~CLine(); CLine* Create() const; } // CLine Implementation CLine::CLine(string section1,string section2):CEntity(section1,section2){}; CLine::CLine(); CLine* CLine::create()const{return new CLine();} I have another class CReader which uses CLine object and populates it in a multimap as below class CReader { public: CReader(); ~CReader(); multimap<int,CEntity*>m_data_vs_entity; }; //CReader Implementation CReader::CReader() { m_data_vs_entity.clear(); }; CReader::~CReader() { multimap<int,CEntity*>::iterator iter; for(iter = m_data_vs_entity.begin();iter!=m_data_vs_entity.end();iter++) { CEntity* current_entity = iter->second; if(current_entity) delete current_entity; } m_data_vs_entity.clear(); } I am reading the data from a file and then populating the CLine Class.The map gets populated in a function of CReader class. Since CEntity has a virtual destructor, I hope the piece of code in CReader's destructor should work. In fact, it does work for small files but I get HEAP CORRUPTION ERROR while working with bigger files. If there is something fundamentally wrong, then, please help me find it, as I have been scratching my head for quit some time now. Thanks in advance and awaiting reply, Regards, Atul

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• Mutability design patterns in Objective C and C++

  - by Mac

  Having recently done some development for iPhone, I've come to notice an interesting design pattern used a lot in the iPhone SDK, regarding object mutability. It seems the typical approach there is to define an immutable class NSFoo, and then derive from it a mutable descendant NSMutableFoo. Generally, the NSFoo class defines data members, getters and read-only operations, and the derived NSMutableFoo adds on setters and mutating operations. Being more familiar with C++, I couldn't help but notice that this seems to be a complete opposite to what I'd do when writing the same code in C++. While you certainly could take that approach, it seems to me that a more concise approach is to create a single Foo class, mark getters and read-only operations as const functions, and also implement the mutable operations and setters in the same class. You would then end up with a mutable class, but the types Foo const*, Foo const& etc all are effectively the immutable equivalent. I guess my question is, does my take on the situation make sense? I understand why Objective-C does things differently, but are there any advantages to the two-class approach in C++ that I've missed? Or am I missing the point entirely? Not an overly serious question - more for my own curiosity than anything else.

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• Modeling a Generic Relationship in a Database

  - by StevenH

  This is most likely one for all you sexy DBAs out there: How would I effieciently model a relational database whereby I have a field in an "Event" table which defines a "SportType". This "SportsType" field can hold a link to different sports tables E.g. "FootballEvent", "RubgyEvent", "CricketEvent" and "F1 Event". Each of these Sports tables have different fields specific to that sport. My goal is to be able to genericly add sports types in the future as required, yet hold sport specific event data (fields) as part of my Event Entity. Is it possible to use an ORM such as NHibernate / Entity framework which would reflect such a relationship? I have thrown together a quick C# example to express my intent at a higher level: public class Event<T> where T : new() { public T Fields { get; set; } public Event() { EventType = new T(); } } public class FootballEvent { public Team CompetitorA { get; set; } public Team CompetitorB { get; set; } } public class TennisEvent { public Player CompetitorA { get; set; } public Player CompetitorB { get; set; } } public class F1RacingEvent { public List<Player> Drivers { get; set; } public List<Team> Teams { get; set; } } public class Team { public IEnumerable<Player> Squad { get; set; } } public class Player { public string Name { get; set; } public DateTime DOB { get; set;} }

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