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1. Re: Newbie needs help with s:convertEntity
asookazian Aug 26, 2009 6:32 PM (in response to indyjones2)<h:selectOneMenu id="newStatusMenu" value="#{equipmentProcessingView.selectedListValueForNewStatus}" required="true"> <s:selectItems var="lve" value="#{populateDropDown.getListValueList('Recovery_Status')}" label="#{lve.description}" noSelectionLabel="Please Select..."/> <s:convertEntity/> </h:selectOneMenu>
@Name("equipmentProcessingView") @Scope(ScopeType.CONVERSATION) @ProfilingThisClass //@Transactional public class EquipmentProcessingViewAction implements Serializable { private ListValue selectedListValueForNewStatus; ... public ListValue getSelectedListValueForNewStatus() { return selectedListValueForNewStatus; } public void setSelectedListValueForNewStatus(ListValue selectedListValueForNewStatus) { this.selectedListValueForNewStatus = selectedListValueForNewStatus; }
@Name("populateDropDown") @AutoCreate @Scope(ScopeType.CONVERSATION) @Transactional public class PopulateDropDown implements Serializable { private static final long serialVersionUID = -8836664905031033539L; //retrieve all labels/values for a particular drop down @Logger private Log log; @In private EntityManager entityManager; private List<ListValue> listValueList; @SuppressWarnings("unchecked") public List<ListValue> getListValueList(String listName) { listValueList = entityManager.createQuery( " select lv "+ " from ListValue lv, "+ " List l "+ " where lv.list.listId = l.listId "+ " and l.listName = :listName "+ " order by lv.sortId ") .setParameter("listName", listName) .getResultList(); log.info("in getListValueList: listValueList.size() = " + listValueList.size()); return listValueList; } @SuppressWarnings("unchecked") public ListValue getListValue(String listName, Integer listCode) { listValueList = entityManager.createQuery( " select lv "+ " from ListValue lv, "+ " List l "+ " where lv.list.listId = l.listId "+ " and l.listName = :listName "+ " and lv.code = :listCode") .setParameter("listName", listName) .setParameter("listCode", listCode) .getResultList(); ListValue lve = null; if (listValueList != null && listValueList.size() > 0) { lve = listValueList.get(0); log.info("in getListValue: getListValue.getDescription() = " + lve.getDescription()); } return lve; } }
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2. Re: Newbie needs help with s:convertEntity
indyjones2 Aug 26, 2009 11:35 PM (in response to indyjones2)When I try the code....I get....
java.lang.NullPointerException at org.jboss.seam.persistence.HibernatePersistenceProvider.getSession(HibernatePersistenceProvider.java:369) at org.jboss.seam.persistence.HibernatePersistenceProvider.getId(HibernatePersistenceProvider.java:177) at org.jboss.seam.framework.EntityIdentifier.<init>(EntityIdentifier.java:13) at org.jboss.seam.ui.JpaEntityLoader.createIdentifier(JpaEntityLoader.java:29) at org.jboss.seam.ui.AbstractEntityLoader.put(AbstractEntityLoader.java:46) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.jboss.seam.util.Reflections.invoke(Reflections.java:22) at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:32) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56) at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:28) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) at org.jboss.seam.transaction.TransactionInterceptor$1.work(TransactionInterceptor.java:97) at org.jboss.seam.util.Work.workInTransaction(Work.java:47) at org.jboss.seam.transaction.TransactionInterceptor.aroundInvoke(TransactionInterceptor.java:91) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44) at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68) at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107) at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:185) at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:103) at org.jboss.seam.ui.JpaEntityLoader_$$_javassist_seam_7.put(JpaEntityLoader_$$_javassist_seam_7.java) at org.jboss.seam.ui.EntityConverter.getAsString(EntityConverter.java:65) at org.jboss.seam.ui.converter.PrioritizableConverter.getAsString(PrioritizableConverter.java:67) at org.jboss.seam.ui.converter.ConverterChain.getAsString(ConverterChain.java:126) at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.getFormattedValue(HtmlBasicRenderer.java:448) at com.sun.faces.renderkit.html_basic.MenuRenderer.renderOption(MenuRenderer.java:480) at com.sun.faces.renderkit.html_basic.MenuRenderer.renderOptions(MenuRenderer.java:772) at com.sun.faces.renderkit.html_basic.MenuRenderer.renderSelect(MenuRenderer.java:832) at com.sun.faces.renderkit.html_basic.MenuRenderer.encodeEnd(MenuRenderer.java:280) at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:861) at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:242) at com.sun.faces.renderkit.html_basic.GridRenderer.renderRow(GridRenderer.java:180) at com.sun.faces.renderkit.html_basic.GridRenderer.encodeChildren(GridRenderer.java:127) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:930) at javax.faces.render.Renderer.encodeChildren(Renderer.java:148) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:837) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:930) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:933) at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592) at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:100) at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:176) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83) at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178) at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290) at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:368) at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:495) at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433) 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:828) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:601) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Unknown Source)
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3. Re: Newbie needs help with s:convertEntity
asookazian Aug 27, 2009 5:29 AM (in response to indyjones2)You need to carefully examine the Seam booking example project, or another example project in the distro, that uses s:convertEntity for an example.
Did you use seam-gen to create your project skeleton?
The NPE is happening here in org.jboss.seam.persistence.HibernatePersistenceProvider:
private Session getSession(EntityManager entityManager) { Object delegate = entityManager.getDelegate(); //<-- NPE here! if ( delegate instanceof Session ) { return (Session) delegate; } else { throw new NotHibernateException(); } }
I'm not sure why this is happening but most likely you need to check your config files (e.g. components.xml, *-ds.xml, persistence.xml, etc.)
Remember, if you have to you can add debug breakpoints in Eclipse and step thru the Seam core code...
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4. Re: Newbie needs help with s:convertEntity
indyjones2 Aug 27, 2009 3:14 PM (in response to indyjones2)I got it....thanks so much for your help...
First, I was trying to set up my components.xml for the wrong version of Seam. I was following directions for 2.0 when I was running 2.1.2.
Second, and I probably missed this, but you must return a list of objects from your Hibernate session when populating the select items. Which makes sense, but I didn't fully get this at first....
For exammple....
This will NOT work...
function List<User> getUsers() { List<Users> userList = new ArrayList<User>(); userList.add(new User("bob")); return userList; }
This will work....
function List<User> getUsers() { Criteria criteria = hibernateSession.createCriteria(User.class); List userList = criteria.list(); return userList; }
Is that correct?
I know I can make a custom converter, but if you are going to use s:convertEntity, you need to make sure you use your Hibernate Session to create the list of objects....
Or am I missing something totally here?