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https://issues.apache.org/jira/browse/DIGESTER-163?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13230197#comment-13230197
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Simone Tripodi commented on DIGESTER-163:
-----------------------------------------
Just to keep you updated my tests: I am getting {{NPE}}s because {{test.xml}}
looks like
{code}
<root>
<container>
<header>
<authors>
<author>Author 1</author>
</authors>
</header>
</container>
</root>
{code}
while rules are configured like (despite the class renaming)
{code}
<digester-rules>
<object-create-rule classname="org.apache.commons.digester3.binder.Entity"
pattern="container"/>
<!-- author -->
<call-method-rule methodname="setAuthor" paramcount="1"
pattern="container/header/authors/author"/>
</digester-rules>
{code}
so we have two options:
* rules pattern are wrong;
* sample is wrong.
I am removing the {{<root>}} element and see what happens. let you know soon!
> ConcurrentModificationException creating a new Digester via
> loaderInstance.newDigester()
> ----------------------------------------------------------------------------------------
>
> Key: DIGESTER-163
> URL: https://issues.apache.org/jira/browse/DIGESTER-163
> Project: Commons Digester
> Issue Type: Bug
> Affects Versions: 3.2
> Environment: Linux, JDK 6
> Reporter: Torsten Krah
> Attachments: Digester163TestCase.java
>
>
> I am gettig a ConcurrentModificationException when trying to create new
> Digester instance from a configured loader:
> Trace is:
> {code}
> java.util.ConcurrentModificationException: null
> at
> java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:761)
> ~[na:1.6.0_27]
> at java.util.LinkedList$ListItr.next(LinkedList.java:696) ~[na:1.6.0_27]
> at
> org.apache.commons.digester3.binder.FromBinderRuleSet.addRuleInstances(FromBinderRuleSet.java:130)
> ~[commons-digester3-3.2.jar:3.2]
> at
> org.apache.commons.digester3.binder.DigesterLoader.addRules(DigesterLoader.java:581)
> ~[commons-digester3-3.2.jar:3.2]
> at
> org.apache.commons.digester3.binder.DigesterLoader.newDigester(DigesterLoader.java:568)
> ~[commons-digester3-3.2.jar:3.2]
> at
> org.apache.commons.digester3.binder.DigesterLoader.newDigester(DigesterLoader.java:516)
> ~[commons-digester3-3.2.jar:3.2]
> at
> org.apache.commons.digester3.binder.DigesterLoader.newDigester(DigesterLoader.java:475)
> ~[commons-digester3-3.2.jar:3.2]
> at
> org.apache.commons.digester3.binder.DigesterLoader.newDigester(DigesterLoader.java:462)
> ~[commons-digester3-3.2.jar:3.2]
> {code}
> The binder documentation (employee servlet) and the mailing list did confirm
> to me, that the loader should be safe to be shared, so this should not happen.
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