Constants in EL 3.0 - Function 'T' not found

Question

I believe the syntax for constants in EL 3.0 is #{T(java.lang.Integer).MIN_VALUE} but then glassfish throws a javax.el.ELException: Function 'T' not found. Here's the full stack trace:

javax.el.ELException: Function 'T' not found
    at com.sun.el.parser.AstFunction.getValue(AstFunction.java:186)
    at com.sun.el.parser.AstValue.getBase(AstValue.java:151)
    at com.sun.el.parser.AstValue.getValue(AstValue.java:200)
    at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:226)
    at org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50)
    at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
    at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194)
    at javax.faces.component.html.HtmlInputText.getSize(HtmlInputText.java:600)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at javax.faces.component.UIComponentBase$AttributesMap.get(UIComponentBase.java:2389)
    at org.primefaces.renderkit.CoreRenderer.renderPassThruAttributes(CoreRenderer.java:111)
    at org.primefaces.component.inputtext.InputTextRenderer.encodeMarkup(InputTextRenderer.java:82)
    at org.primefaces.component.inputtext.InputTextRenderer.encodeEnd(InputTextRenderer.java:51)
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:924)
    at org.primefaces.renderkit.CoreRenderer.renderChild(CoreRenderer.java:63)
    at org.primefaces.renderkit.CoreRenderer.renderChildren(CoreRenderer.java:47)
    at org.primefaces.component.fieldset.FieldsetRenderer.encodeContent(FieldsetRenderer.java:90)
    at org.primefaces.component.fieldset.FieldsetRenderer.encodeMarkup(FieldsetRenderer.java:72)
    at org.primefaces.component.fieldset.FieldsetRenderer.encodeEnd(FieldsetRenderer.java:46)
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:924)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863)
    at javax.faces.render.Renderer.encodeChildren(Renderer.java:176)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:894)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
    at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:443)
    at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131)
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:357)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:260)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:188)
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:191)
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:168)
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:189)
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:288)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:206)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:136)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:114)
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:838)
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:113)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:115)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:55)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:135)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:564)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:544)
    at java.lang.Thread.run(Thread.java:722)

score 4 · Accepted Answer · answered Aug 26 '13 at 19:17

The #{T(java.lang.Integer).MIN_VALUE} syntax was indeed mentioned as such in both EL 3.0 early draft review and EL 3.0 proposal homepage. However, in EL 3.0 final release, it was at the last moment removed and replaced by a simpler #{Integer.MIN_VALUE} syntax.

However, the new syntax has in turn a bug in GlassFish4: it was implemented by the new standalone EL processor API, but not by the JSP API. This is already reported as issue 20778 and fixed just half a hour ago. In other words: you need to upgrade GlassFish4.

score -1 · Answer 2 · answered Jul 16 '13 at 20:40

-1

In this case T stands for "type." In your actual code, you'd refer to the EL name of the class to which you are referring. So, for example, for the following backing bean class:

@Named
public class MyBackingBean {
  public static final Integer MIN_VALUE = new Integer(10);
...
}

In the EL, you'd refer to it as:

#{myBackingBean.MIN_VALUE}

Although I personally wouldn't use Integer here for a constant, when an int would work.

answered Jul 16 '13 at 20:40

Ian Evans

1,357
10
10

This gives me following exception: "Property *property* not found on type *bean*" – perak Aug 25 '13 at 10:08
@perak: please post the source of the JSF page and the backing bean. There isn't enough information in your question and reply to helpfully debug. – Ian Evans Aug 26 '13 at 01:07
I created new question about this: http://stackoverflow.com/questions/18449495/constants-in-el-3-0-property-not-found – perak Aug 26 '13 at 17:20

Constants in EL 3.0 - Function 'T' not found

2 Answers2