This is what I have in my view:
| <h:outputText value="Count =
#{cspecInfo.attributeCount}" />
| <h:dataTable value="#{cspecInfo.componentAttributes}"
var="attr"
| rows="25" >
| <h:column>
| <h:outputText value="#{attr.name}" />
| </h:column>
| </h:dataTable>
|
The cspecInfo refers to an Entity that has a Set that is obtained as the value.
(The output above refers to a transient attribute in the Entity bean
(attributeCount).
I get the correct count as output. So I know I have things in the set.
When I try to render the #{attr.name} I get the following error:
| ALLVARLIG: Error Rendering View[/cspec-view.xhtml]
| javax.faces.el.PropertyNotFoundException: /cspec-view.xhtml @113,43
value="#{attr.name}": Bean: org.hibernate.collection.PersistentSet, property:
name
| at
com.sun.facelets.el.LegacyValueBinding.getValue(LegacyValueBinding.java:58)
| at javax.faces.component.UIOutput.getValue(UIOutput.java:77)
| at
org.apache.myfaces.shared_impl.renderkit.RendererUtils.getStringValue(RendererUtils.java:217)
| at
org.apache.myfaces.shared_impl.renderkit.html.HtmlTextRendererBase.renderOutput(HtmlTextRendererBase.java:69)
| at
org.apache.myfaces.shared_impl.renderkit.html.HtmlTextRendererBase.encodeEnd(HtmlTextRendererBase.java:57)
| at
javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:536)
| at
org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:442)
| at
org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChildren(RendererUtils.java:419)
| at
org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:440)
| at
org.apache.myfaces.shared_impl.renderkit.html.HtmlTableRendererBase.renderColumnBody(HtmlTableRendererBase.java:332)
| at
org.apache.myfaces.shared_impl.renderkit.html.HtmlTableRendererBase.encodeColumnChild(HtmlTableRendererBase.java:301)
| at
org.apache.myfaces.shared_impl.renderkit.html.HtmlTableRendererBase.encodeInnerHtml(HtmlTableRendererBase.java:277)
| at
org.apache.myfaces.shared_impl.renderkit.html.HtmlTableRendererBase.encodeChildren(HtmlTableRendererBase.java:123)
| at
javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:524)
| at
com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:244)
| at
com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
| at
com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:573)
| at
org.ajax4jsf.framework.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:101)
| at
org.ajax4jsf.framework.ajax.AjaxViewHandler.renderView(AjaxViewHandler.java:222)
| at
org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:384)
| at javax.faces.webapp.FacesServlet.service(FacesServlet.java:138)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at
org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:63)
| at
org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:57)
| at
org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
| at
org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
| at
org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
| at
org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:79)
| at
org.jboss.seam.web.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:49)
| at org.jboss.seam.web.SeamFilter.doFilter(SeamFilter.java:84)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at
org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:75)
| at
org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:213)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
| at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
| at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
| at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
| at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
| at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
| at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
| at
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
| at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
| at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
| at
org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
| at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
| at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
| at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
| at
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
| at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
| at
org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
| at java.lang.Thread.run(Thread.java:619)
|
ComponentAttribute does have the attribute "name".
If I ouput something else - like static string - I get one row per object in
the set (with the fixed string).
This is what the parent (what cspecInfo refers to) has as definition:
| private Set<ComponentAttribute> m_componentAttributes;
| @OneToMany(mappedBy="spec")
| public Set<ComponentAttribute> getComponentAttributes()
| {
| return m_componentAttributes;
| }
| public void setComponentAttributes(Set<ComponentAttribute> attributes)
| {
| m_componentAttributes = attributes;
| }
| @Transient
| public String getAttributeCount()
| {
| if(m_componentAttributes == null)
| return "0";
| return new Integer(m_componentAttributes.size()).toString();
| }
|
And the corresponding part in the detail entity looks like this:
| private ComponentSpec m_spec;
|
| @NotNull
| @Length(min = 1, max = 100)
| @Column(unique = true)
| public String getName()
| {
| return m_name;
| }
|
(it has an id column called 'cattr_id')
So - what am I doing wrong?
Should I access the data some other way?
Regards
- henrik
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