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Date: Wed, 6 Sep 2006 12:57:14 -0700 (PDT)
From: Wadim Kruse <z-cool@web.de>
To: users@cocoon.apache.org
Subject: portal + cforms + coplet links
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Hi folks,

I would like to pass some information from one coplet to another. I've read
that one possible solution to achieve this is by using coplet links. I've
tried it, but it doesn't work. When I click the link, the coplet with the
link is redisplayed.

This is the coplet with the link:

	<coplet-data id="Programme" name="standard">
		<title>Programme</title>
		<coplet-base-data>URICoplet</coplet-base-data>
		<attribute>
			<name>buffer</name>
			<value xsi:type="java:java.lang.Boolean"
				xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
				true
			</value>
		</attribute>
		<attribute>
			<name>handleParameters</name>
			<value xsi:type="java:java.lang.Boolean"
				xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
				true
			</value>
		</attribute>
		<attribute>
			<name>uri</name>
			<value xsi:type="java:java.lang.String">
				cocoon:/coplets/moped/ProgrammeDescriptions
			</value>
		</attribute>
		<aspect>
			<name>mandatory</name>
			<value xsi:type="java:java.lang.Boolean">true</value>
		</aspect>
	</coplet-data>

This is the target coplet:

<coplet-data id="CreateNewProgramme" name="standard">
		<title>Create New Programme</title>
		<coplet-base-data>CachingURICoplet</coplet-base-data>
		<attribute>
			<name>buffer</name>
			<value xsi:type="java:java.lang.Boolean"
				xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
				true
			</value>
		</attribute>
		<attribute>
			<name>handleParameters</name>
			<value xsi:type="java:java.lang.Boolean"
				xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
				true
			</value>
		</attribute>
		<attribute>
			<name>uri</name>
			<value xsi:type="java:java.lang.String">
				cocoon:/coplets/html/application
			</value>
		</attribute>
		<attribute>
			<name>temporary:application-uri</name>
			<value xsi:type="java:java.lang.String"
				xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
				cocoon://portal/coplets/moped/ProgrammeDescriptions/cform
			</value>
		</attribute>
		<aspect>
			<name>mandatory</name>
			<value xsi:type="java:java.lang.Boolean">true</value>
		</aspect>
	</coplet-data>

The copletinstancedata and the layout of the target coplet:

<?xml version="1.0" encoding="UTF-8"?>
<coplets>
   <coplet-instance-data id="Programme-1" name="standard">
      <coplet-data>Programme</coplet-data>
   </coplet-instance-data>
    <coplet-instance-data id="CreateNewProgramme-1" name="standard">
      <coplet-data>CreateNewProgramme</coplet-data>
   </coplet-instance-data>
</coplets>

<?xml version="1.0" encoding="UTF-8"?>
<composite-layout name="tab" id="maintab">
	<named-item name="Programme Descriptions">
	<composite-layout name="column">
      <item>
        <coplet-layout name="coplet">
          <coplet-instance-data>Programme-1</coplet-instance-data>
        </coplet-layout>
      </item>
    </composite-layout>
    </named-item>
	<named-item name="Create New Programme">
		<coplet-layout name="coplet">
			<coplet-instance-data>CreateNewProgramme-1</coplet-instance-data>
		</coplet-layout>
	</named-item>
</composite-layout>

The link is:
<cl:link path="attributes/fileName" value="{concat($ProgrammeCode,'.xml')}"
coplet="CreateNewProgramme-1">
      images/document.gif 
</cl:link>

The portal.log says:

WARN    (2006-09-06) 20:49.06:257   [portal] (/cocoon/portal/portal)
http-8080-Processor25/DefaultEventManager: Exception during event
dispatching on receiver
org.apache.cocoon.portal.event.subscriber.impl.DefaultJXPathEventSubscriber@121321f5
and event org.apache.cocoon.portal.event.impl.JXPathEvent@2ac02d83
java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:585)
	at
org.apache.cocoon.portal.event.impl.DefaultEventManager.send(DefaultEventManager.java:363)
	at
org.apache.cocoon.portal.event.aspect.impl.RequestParameterEventAspect.process(RequestParameterEventAspect.java:56)
	at
org.apache.cocoon.portal.event.aspect.impl.RequestParameterEventAspect.process(RequestParameterEventAspect.java:82)
	at
org.apache.cocoon.portal.event.impl.DefaultEventAspectContext.invokeNext(DefaultEventAspectContext.java:60)
	at
org.apache.cocoon.portal.wsrp.adapter.WSRPEventAspect.process(WSRPEventAspect.java:67)
	at
org.apache.cocoon.portal.event.impl.DefaultEventAspectContext.invokeNext(DefaultEventAspectContext.java:60)
	at
org.apache.cocoon.portal.event.aspect.impl.FullScreenCopletEventAspect.process(FullScreenCopletEventAspect.java:101)
	at
org.apache.cocoon.portal.event.impl.DefaultEventAspectContext.invokeNext(DefaultEventAspectContext.java:60)
	at
org.apache.cocoon.portal.event.aspect.impl.AbstractContentEventAspect.process(AbstractContentEventAspect.java:132)
	at
org.apache.cocoon.portal.event.impl.DefaultEventAspectContext.invokeNext(DefaultEventAspectContext.java:60)
	at
org.apache.cocoon.portal.event.aspect.impl.AbstractContentEventAspect.process(AbstractContentEventAspect.java:132)
	at
org.apache.cocoon.portal.event.impl.DefaultEventAspectContext.invokeNext(DefaultEventAspectContext.java:60)
	at
org.apache.cocoon.portal.event.aspect.impl.NoClientCachingEventAspect.process(NoClientCachingEventAspect.java:52)
	at
org.apache.cocoon.portal.event.impl.DefaultEventAspectContext.invokeNext(DefaultEventAspectContext.java:60)
	at
org.apache.cocoon.portal.event.impl.DefaultEventManager.processEvents(DefaultEventManager.java:312)
	at
org.apache.cocoon.portal.impl.PortalManagerImpl.prepare(PortalManagerImpl.java:156)
	at
org.apache.cocoon.portal.impl.DefaultPortalManagerAspectContext.invokeNext(DefaultPortalManagerAspectContext.java:62)
	at
org.apache.cocoon.portal.wsrp.adapter.WSRPAdapter.prepare(WSRPAdapter.java:734)
	at
org.apache.cocoon.portal.impl.DefaultPortalManagerAspectContext.invokeNext(DefaultPortalManagerAspectContext.java:62)
	at
org.apache.cocoon.portal.coplet.adapter.impl.PortletAdapter.prepare(PortletAdapter.java:374)
	at
org.apache.cocoon.portal.impl.DefaultPortalManagerAspectContext.invokeNext(DefaultPortalManagerAspectContext.java:62)
	at
org.apache.cocoon.portal.impl.PortalManagerImpl.process(PortalManagerImpl.java:116)
	at
org.apache.cocoon.portal.generation.PortalGenerator.generate(PortalGenerator.java:79)
	at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:579)
	at
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:282)
	at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:481)
	at
org.apache.cocoon.components.treeprocessor.sitemap.SerializeNode.invoke(SerializeNode.java:121)
	at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:47)
	at
org.apache.cocoon.components.treeprocessor.sitemap.ActTypeNode.invoke(ActTypeNode.java:139)
	at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:47)
	at
org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:108)
	at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
	at
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
	at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
	at
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
	at
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:235)
	at
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:177)
	at
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:253)
	at
org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:118)
	at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:47)
	at
org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:108)
	at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
	at
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
	at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:69)
	at
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:93)
	at
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:235)
	at
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:177)
	at
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:253)
	at org.apache.cocoon.Cocoon.process(Cocoon.java:697)
	at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:1154)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
	at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
	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.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$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
	at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
	at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
	at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
	at java.lang.Thread.run(Thread.java:595)
Caused by: org.apache.commons.jxpath.JXPathException: Exception trying to
set value with xpath attributes/fileName; Cannot set property
/attributes/fileName, path does not match a changeable location
	at
org.apache.commons.jxpath.ri.JXPathContextReferenceImpl.setValue(JXPathContextReferenceImpl.java:421)
	at
org.apache.commons.jxpath.ri.JXPathContextReferenceImpl.setValue(JXPathContextReferenceImpl.java:412)
	at
org.apache.cocoon.portal.event.subscriber.impl.DefaultJXPathEventSubscriber.inform(DefaultJXPathEventSubscriber.java:44)
	... 69 more
Caused by: org.apache.commons.jxpath.JXPathException: Cannot set property
/attributes/fileName, path does not match a changeable location
	at
org.apache.commons.jxpath.ri.model.beans.NullPropertyPointer.setValue(NullPropertyPointer.java:95)
	at
org.apache.commons.jxpath.ri.JXPathContextReferenceImpl.setValue(JXPathContextReferenceImpl.java:503)
	at
org.apache.commons.jxpath.ri.JXPathContextReferenceImpl.setValue(JXPathContextReferenceImpl.java:418)
	... 71 more
INFO    (2006-09-06) 20:49.07:300   [portal] (/cocoon/portal/portal)
http-8080-Processor25/AbstractCopletAdapter: Streamed coplet Programme
(instance Programme-1) in 343ms.

Best regards,
Wadim 

(Cocoon 2.1.10-dev, Java 1.5.0_08, Ubuntu Linux 6.06)




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