[jboss-user] [JBoss Seam] - how to extend EntityQuery

gmarcus do-not-reply at jboss.com
Tue Jul 3 16:09:54 EDT 2007


Seam 1.2.1
Jboss 4.0.5

I have extended EntityQuery:

  | @Name("predictionList")
  | @Scope(CONVERSATION)
  | public class PredictionList extends EntityQuery
  | {
  | 	private static final long serialVersionUID = -28849438634100838L;
  | 
  | 	@In(required=true, create=true)
  | 	private PredictionFilter predictionFilter;
  | 
  | 	@Override
  | 	public String getEjbql() {
  | 		return "select p from Prediction p";
  | 	}	
  | 
  | 	@Override
  | 	public List<String> getRestrictions()
  | 	{
  | 		System.out.println("getRestrictions() called.  PredictionFilter:" + predictionFilter);
  | 			
  | 		ArrayList<String> restrictions = new ArrayList<String>(0);
  | 
  | 		if (predictionFilter.getFilterChoice().equals(PredictionFilter.FilterChoice.ALL))
  | 		{
  | 			return restrictions;
  | 		}
  | 
  | 		if (predictionFilter.getFilterChoice().equals(PredictionFilter.FilterChoice.FEATURED))
  | 		{
  | 			restrictions.add("p.featured=true");
  | 			return restrictions;
  | 		}
  | 
  | 		if (predictionFilter.getFilterChoice().equals(PredictionFilter.FilterChoice.EDITORSPICKS))
  | 		{
  | 			restrictions.add("p.editorspick=true");
  | 			return restrictions;
  | 		}
  | 
  | 		return restrictions;
  | 
  | 	}
  | 
  | ...
  | 
  | 

When I use predictionList in my view:

  | <h:outputText class="nopredictions" value="No predictions to display" rendered="#{empty predictionList.resultList}"/>
  | <h:dataTable styleclass="predictions" value="#{predictionList.resultList}" var="pre" rendered="#{not empty predictionList.resultList}">
  | ...
  | 

I get the following exception:

  | javax.faces.el.EvaluationException: /layout/predictions.xhtml @8,118 rendered="#{empty predictionList.resultList}": com.mystuff.fresh.domain.PredictionList_$$_javassist_304
  |         at com.sun.facelets.el.LegacyValueBinding.getValue(LegacyValueBinding.java:60)
  |         at javax.faces.component.UIComponentBase.isRendered(UIComponentBase.java:822)
  |         at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:241)
  |         at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:249)
  |         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:221)
  |         at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
  |         at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)
  |         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.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:60)
  |         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.ExceptionFilter.doFilter(ExceptionFilter.java:57)
  |         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.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:595)
  | Caused by: javax.faces.el.EvaluationException: Bean: com.mystuff.fresh.domain.PredictionList_$$_javassist_304, property: resultList
  |         at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:404)
  |         at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:71)
  |         at com.sun.facelets.el.LegacyELContext$LegacyELResolver.getValue(LegacyELContext.java:141)
  |         at com.sun.el.parser.AstValue.getValue(AstValue.java:125)
  |         at com.sun.el.parser.AstEmpty.getValue(AstEmpty.java:49)
  |         at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:195)
  |         at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71)
  |         at com.sun.facelets.el.LegacyValueBinding.getValue(LegacyValueBinding.java:56)
  |         ... 44 more
  | Caused by: java.lang.reflect.InvocationTargetException
  |         at sun.reflect.GeneratedMethodAccessor7810.invoke(Unknown Source)
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:585)
  |         at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:400)
  |         ... 51 more
  | Caused by: java.lang.IllegalArgumentException: there should be exactly one value binding in a restriction: p.featured=true
  |         at org.jboss.seam.framework.Query.parseEjbql(Query.java:145)
  |         at org.jboss.seam.framework.EntityQuery.createQuery(EntityQuery.java:100)
  |         at org.jboss.seam.framework.EntityQuery.getResultList(EntityQuery.java:41)
  |         at sun.reflect.GeneratedMethodAccessor7811.invoke(Unknown Source)
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:585)
  |         at org.jboss.seam.util.Reflections.invoke(Reflections.java:20)
  |         at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31)
  |         at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:57)
  |         at org.jboss.seam.interceptors.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:47)
  |         at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
  |         at org.jboss.seam.interceptors.ManagedEntityIdentityInterceptor.aroundInvoke(ManagedEntityIdentityInterceptor.java:37)
  |         at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
  |         at org.jboss.seam.interceptors.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:34)
  |         at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
  |         at org.jboss.seam.interceptors.TransactionInterceptor$1.work(TransactionInterceptor.java:32)
  |         at org.jboss.seam.util.Work.workInTransaction(Work.java:37)
  |         at org.jboss.seam.interceptors.TransactionInterceptor.aroundInvoke(TransactionInterceptor.java:27)
  |         at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
  |         at org.jboss.seam.interceptors.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:27)
  |         at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:69)
  |         at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:103)
  |         at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:151)
  |         at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:87)
  |         at com.mystuff.fresh.domain.PredictionList_$$_javassist_304.getResultList(PredictionList_$$_javassist_304.java)
  |         ... 55 more
  | 

Are restrictions the right way to set the where clause on a query?



View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4060130#4060130

Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4060130



More information about the jboss-user mailing list