Can you embed @DataModel?
This demo was made with seam-gen (2.0.1 on JBoss 4.2.2) to demonstrate a problem.
I wouldn't be surprised if it turns out to be a PEBKAC, it probably is, but I figured it never hurts to ask.
I'm running into this exception:
javax.faces.FacesException: javax.el.PropertyNotFoundException: /aclassManager.xhtml @44,53 value="#{b.name}": Property 'name' not found on type java.util.HashSet
at javax.faces.component.UIOutput.getValue(UIOutput.java:176)
at com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getValue(HtmlBasicInputRenderer.java:189)
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.getCurrentValue(HtmlBasicRenderer.java:320)
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeEnd(HtmlBasicRenderer.java:200)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:836)
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:279)
at com.sun.faces.renderkit.html_basic.TableRenderer.encodeChildren(TableRenderer.java:307)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:271)
at com.sun.faces.renderkit.html_basic.TableRenderer.encodeChildren(TableRenderer.java:307)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282)
at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:262)
at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:199)
at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:194)
at org.ajax4jsf.renderkit.RendererBase.encodeChildren(RendererBase.java:121)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886)
at javax.faces.render.Renderer.encodeChildren(Renderer.java:137)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:892)
at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592)
at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:216)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
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$FilterChainImpl.doFilter(SeamFilter.java:83)
at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85)
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$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
at java.lang.Thread.run(Thread.java:595)
Caused by: javax.el.PropertyNotFoundException: /aclassManager.xhtml @44,53 value="#{b.name}": Property 'name' not found on type java.util.HashSet
at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:73)
at javax.faces.component.UIOutput.getValue(UIOutput.java:173)
... 65 moreWith this setup:
@Entity
@Name("aclass")
public class aclass implements Serializable {
private Long id;
private Integer version;
private String name;
@DataModel
private Set<bclass> bclasses;
public aclass() {
bclasses = new HashSet<bclass>();
}
@Id @GeneratedValue
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
@Version
public Integer getVersion() {
return version;
}
private void setVersion(Integer version) {
this.version = version;
}
@Length(max=20)
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@OneToMany(mappedBy="aclass")
public Set<bclass> getBclasses() {
return bclasses;
}
public void setBclasses(Set<bclass> bclasses) {
this.bclasses = bclasses;
}
}
@Entity
@Name("bclass")
public class bclass implements Serializable {
private Long id;
private Integer version;
private String name;
private aclass aclass;
@Id @GeneratedValue
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
@Version
public Integer getVersion() {
return version;
}
private void setVersion(Integer version) {
this.version = version;
}
@Length(max=20)
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@ManyToOne
public aclass getAclass() {
return aclass;
}
public void setAclass(aclass aclass) {
this.aclass = aclass;
}
}
@Local
public interface AclassManager {
public String save();
public void addAInstance();
public void addBInstance();
public String begin();
public String increment();
public String end();
public int getValue();
public void destroy();
}@Stateful
@Name("aclassManager")
public class AclassManagerBean implements AclassManager {
@PersistenceContext
EntityManager em;
@Logger
private Log log;
@DataModel
private Set<aclass> aclassSet;
@DataModelSelection
private aclass aclassSelection;
private int value;
@Begin
public String begin() {
log.info("beginning conversation");
aclassSet = new HashSet<aclass>();
return "success";
}
public String increment() {
log.info("incrementing");
value++;
return "success";
}
@End
public String end() {
log.info("ending conversation");
return "home";
}
public int getValue() {
return value;
}
@Destroy
@Remove
public void destroy() {
}
public String save() {
em.persist(aclassSet);
return null;
}
public void addAInstance() {
log.info("adding instance of class A");
aclassSet.add(new aclass());
log.info("Done.\nWe now have " + aclassSet.size() + " instances in the set");
}
public void addBInstance() {
log.info("adding instance of class B to class " + aclassSelection.getName());
aclassSelection.getBclasses().add(new bclass());
log.info("Done.\nWe now have " + aclassSelection.getBclasses().size() + " instances in class " +aclassSelection.getName()+"'s set");
}
}
<!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:s="http://jboss.com/products/seam/taglib"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:rich="http://richfaces.org/rich"
template="layout/template.xhtml">
<ui:define name="body">
<h:messages globalOnly="true" styleClass="message"/>
<rich:panel>
<f:facet name="header">aclassManager</f:facet>
<div class="dialog">
<div class="prop">
<span class="name">Value</span>
<span class="value">#{aclassManager.value}</span>
</div>
</div>
<div style="clear:both"/>
</rich:panel>
<h:form id="manage">
<rich:panel>
<h:dataTable value="#{aclassSet}" var="a">
<h:column>
<f:facet name="header">aclass name</f:facet>
<h:inputText id = "aName" value="#{a.name}"/>
</h:column>
<h:column>
<f:facet name="header">action</f:facet>
<h:commandButton id="addB" value="Add bclass Instance"
action="#{aclassManager.addBInstance}"/>
</h:column>
<h:column>
<h:dataTable value="#{a.bclasses}" var="b" rendered="#{a.bclasses.size>0}">
<h:column>
<f:facet name="header">bclass name</f:facet>
<h:inputText id = "bName" value="#{b.name}"/>
</h:column>
</h:dataTable>
</h:column>
</h:dataTable>
</rich:panel>
</h:form>
<h:form id="aclassManager">
<div class="actionButtons">
<h:commandButton id="begin" value="Begin"
action="#{aclassManager.begin}"/>
<h:commandButton id="inc" value="Increment"
action="#{aclassManager.increment}"/>
<h:commandButton id="end" value="End"
action="#{aclassManager.end}"/>
<h:commandButton id="save" value="Save"
action="#{aclassManager.save}"/>
<h:commandButton id="addA" value="Add aclass Instance"
action="#{aclassManager.addAInstance}"/>
</div>
</h:form>
</ui:define>
</ui:composition>
Is what I'm trying to do here not possible?
I see the right debug statements logged, but the page craps its pants once it tries to render.
Any insight would be much appreciated.
Thanks!