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Generating a JSP JET2 template [message #478906]

Fri, 07 August 2009 08:34

Markus Backman
Messages: 3
Registered: July 2009

Junior Member

Hi

I am having trouble to generate a JET2 template that contains JSP code.

Here is the template
<%@ taglib uri="http://ibm.com/portlet/aggregation" prefix="portlet" %>

<portlet:init portletURLPrefix="<%=request.getContextPath()%>">

<c:iterate select="$portal/layout" var="section">
<portlet:section templateSection="<c:get
select="$section/@template"/>"/>
</c:iterate>

</portlet:init>

The xml model is simply

<portal>
<layout>
<section>myTemplate1</section>
<section>myTemplate2</section>
</layout>
</portal>

If I run the tranformation I recive a
"Error: Could not find template templates/WebContent/portal.jet". The jet
template is located there. So by removing the taglib declaration on the
top I get "An internal error occured during: "Launching"". Locking in the
Error Log I see this.

java.lang.Error: Unresolved compilation problems:
request cannot be resolved
at org.eclipse.jet.compiled._jet_portal.generate(_jet_portal.ja va:86)
at
org.eclipse.jet.transform.TransformContextExtender.execute(T ransformContextExtender.java:146)
at
org.eclipse.jet.transform.TransformContextExtender.execute(T ransformContextExtender.java:119)
at
org.eclipse.jet.internal.taglib.workspace.FileTag.doAction(F ileTag.java:102)
at
org.eclipse.jet.internal.runtime.SafeEmptyRuntimeTag$1.doRun (SafeEmptyRuntimeTag.java:50)
at
org.eclipse.jet.internal.runtime.SafeCustomRuntimeTag$TagSaf eRunnable.run(SafeCustomRuntimeTag.java:73)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
at org.eclipse.core.runtime.Platform.run(Platform.java:843)
at
org.eclipse.jet.internal.runtime.SafeEmptyRuntimeTag.doStart (SafeEmptyRuntimeTag.java:44)
at org.eclipse.jet.compiled._jet_main.generate(_jet_main.java:5 00)
at
org.eclipse.jet.transform.TransformContextExtender.execute(T ransformContextExtender.java:146)
at
org.eclipse.jet.transform.TransformContextExtender.execute(T ransformContextExtender.java:119)
at org.eclipse.jet.JET2Platform$4.run(JET2Platform.java:430)
at
org.eclipse.jet.internal.runtime.JETBundleManager.run(JETBun dleManager.java:336)
at org.eclipse.jet.JET2Platform.runTransform(JET2Platform.java: 398)
at org.eclipse.jet.internal.launch.JETProcess.run(JETProcess.ja va:158)
at
org.eclipse.jet.internal.launch.JET2TransformationDelegate.l aunch(JET2TransformationDelegate.java:60)
at
org.eclipse.debug.internal.core.LaunchConfiguration.launch(L aunchConfiguration.java:639)
at
org.eclipse.debug.internal.core.LaunchConfiguration.launch(L aunchConfiguration.java:565)
at
org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(D ebugUIPlugin.java:754)
at
org.eclipse.debug.internal.ui.DebugUIPlugin$6.run(DebugUIPlu gin.java:944)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:58)

Is there a way to get JET2 to generate JSP files?

Best regards,
Markus

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Re: Generating a JSP JET2 template [message #478912 is a reply to message #478906]

Fri, 07 August 2009 09:16

Paul Elder
Messages: 844
Registered: July 2009

Senior Member

Markus:

The problem is that JSP elements - directives (<%@), scriptlets(<%) and expressions (<%=) are also JET syntax. (You'd have the sample problem if you were trying to generate a JSP from a JSP.)

The solution: the judicious use of backslash (\) to escape JSP directives, scriptlets and expressions that the JET compiler would otherwise think are JET elements.

JET tries to follow JSP escaping practices. General rule: the backslash goes after the <. So <\%=, <\%@, <\%, etc..

Here's my reworking of your template:

<\%@ taglib uri="http://ibm.com/portlet/aggregation" prefix="portlet" %>

<portlet:init portletURLPrefix="<\%=request.getContextPath()%>">

<c:iterate select="$portal/layout" var="section">
<portlet:section templateSection="<c:get
select="$section/@template"/>"/>
</c:iterate>

</portlet:init>

Paul

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