Gel Script not working after Upgrade to v15.8.1
Article ID: 196722
Updated On:
Products
Issue/Introduction
Some Gel Scripts working in 15.8.0 fail after upgrade to 15.8.1.
STEPS TO REPRODUCE:
1. Create a process
2. Create a process step which runs the following gel script (also attached as .txt here)
<gel:script
xmlns:gel="jelly:com.niku.union.gel.GELTagLibrary"
xmlns="http://www.w3.org/2001/XMLSchema"
xmlns:core="jelly:core"
xmlns:sql="jelly:sql"
xmlns:util="jelly:util"
xmlns:xog="http://www.niku.com/xog"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<!-- Create the xog client -->
<core:new className="com.niku.xog.client.XOGClientInterface" var="XOGAdminClient"/>
<!-- Get the Clarity Version for XML Header -->
<core:invokeStatic className="com.niku.union.config.ConfigurationManager" method="getInstance" var="thisClarityConfig"/>
<core:set value="${thisClarityConfig.getVersionProperty('version')}" var="ClarityVersion"/>
<gel:log>Clarity version: ${ClarityVersion}</gel:log>
<!-- *** Project XML Creation *** -->
<gel:parse var="xml">
<NikuDataBus xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../xsd/nikuxog_project.xsd">
<Header action="write" externalSource="NIKU" objectType="project" version="${ClarityVersion}"/>
<Projects>
<!-- insert the project tag here -->
</Projects>
</NikuDataBus>
</gel:parse>
<!--Create XML for Project -->
<gel:parse var="Project">
<Project name="Test" projectID="test123456">
<Tasks>
<!-- insert the task tag here -->
</Tasks>
</Project>
</gel:parse>
<!-- Create XML for task -->
<gel:parse var="Task">
<Task finish="2020-12-31T17:00:00" internalTaskID="5078120" milestone="false" name="Test" outlineLevel="1" start="2020-06-01T00:00:00" status="0" taskID="~rmw">
<estimateRules />
</Task>
</gel:parse>
<gel:set insert="true" select="$Project//Tasks" value="${Task}"/>
<gel:set insert="true" select="$xml/NikuDataBus/Projects" value="${Project}"/>
<gel:log>XML: <gel:expr select="$xml"/></gel:log>
<gel:log>Project/Task XML To be XOGGED:<gel:expr select="$xml"/> </gel:log>
<!-- Send the XOG request to Clarity -->
<core:invoke method="invoke" on="${XOGAdminClient}" var="xogResponse">
<core:arg type="java.lang.String" value="xoguser"/>
<core:arg type="org.w3c.dom.Document" value="${xml}"/>
</core:invoke>
<!-- Print the read response of XOG -->
<gel:log>Response: <gel:expr select="$xogResponse"/> </gel:log>
</gel:script>
3. connect the step, validate, activate and run the process.
Expected results: Process with the gel script to run successfully as it was in PPM 15.8.0 and older releases.
Actual results: Process fails with gel tag exceptions captured in BPM errors and BG-ca.logs:--
BPM-0704: An error occurred while executing custom script: org.apache.commons.jelly.JellyTagException: null:32:68: <gel:set> Missing or invalid XML at com.niku.union.gel.tags.SetTag.doTag(SetTag.java:137) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:248) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:96) at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:187) at com.niku.union.gel.tags.ScriptTag.doTag(ScriptTag.java:20) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:248) at com.niku.union.gel.GELScript.run(GELScript.java:58) at com.niku.union.gel.GELController.invoke(GELController.java:74) at com.niku.bpm.services.ExecuteCustomAction.run(ExecuteCustomAction.java:207) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: org.apache.commons.jelly.JellyTagException: null:-1:-1: <null> <gel:set> attribute 'select' $Project//Tasks does not refer to an existing node. at com.niku.union.gel.tags.SetTag.doTag(SetTag.java:73) ... 11 more Root cause org.apache.commons.jelly.JellyTagException: null:-1:-1: <null> <gel:set> attribute 'select' $Project//Tasks does not refer to an existing node. at com.niku.union.gel.tags.SetTag.doTag(SetTag.java:73) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:248) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:96) at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:187) at com.niku.union.gel.tags.ScriptTag.doTag(ScriptTag.java:20) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:248) at com.niku.union.gel.GELScript.run(GELScript.java:58) at com.niku.union.gel.GELController.invoke(GELController.java:74) at com.niku.bpm.services.ExecuteCustomAction.run(ExecuteCustomAction.java:207) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:834)
Cause
This is due to DE56573 related to Gel tags with invalid namespaces
Environment
CLARITY 15.8.1
Resolution
DE56573, fixed in 15.9 and 15.8.1 patch 2.
Workaround:
Remove gel namespace from gel header.
xmlns="http://www.w3.org/2001/XMLSchema"
In prior Clarity releases even if there was such namespace references the same would not error out but in 15.8.1 this fails
Examples of valid namespace references in gel scripts..
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:core="jelly:core"
xmlns:sql="jelly:sql"
xmlns:util="jelly:util"
Note:
With valid parse tag the system maps namespace to the valid library. The gel parse tag gel parse relaxes the incorrect namespace reference.
For example xmlns:xyz="jelly:com.niku.union.gel.GELTagLibrary"
....
....
<xyz:parse var="xml">
<NikuDataBus xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../xsd/nikuxog_project.xsd">
<Header action="write" externalSource="NIKU" objectType="project" version="${ClarityVersion}"/>
<Projects>
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