how to extend EntityQuery
gmarcus Jul 3, 2007 4:09 PMSeam 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?