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From "Stuart McCulloch (JIRA)" <j...@apache.org>
Subject [jira] Commented: (FELIX-721) NPE in FilterImpl.toString()
Date Fri, 12 Sep 2008 14:29:44 GMT

    [ https://issues.apache.org/jira/browse/FELIX-721?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12630574#action_12630574
] 

Stuart McCulloch commented on FELIX-721:
----------------------------------------

+1, patch looks good to me.

> NPE in FilterImpl.toString()
> ----------------------------
>
>                 Key: FELIX-721
>                 URL: https://issues.apache.org/jira/browse/FELIX-721
>             Project: Felix
>          Issue Type: Bug
>          Components: Framework
>    Affects Versions: felix-1.0.4
>            Reporter: Don Brown
>         Attachments: ldap.patch
>
>
> We see this NPE occasionally, probably 10% of the time on application startup:
>      [java] java.lang.NullPointerException
>      [java]     at org.apache.felix.framework.util.ldap.Parser$AndOperator.toStringInfix(Parser.java:601)
>      [java]     at org.apache.felix.framework.util.ldap.Evaluator.toStringInfix(Evaluator.java:184)
>      [java]     at org.apache.felix.framework.FilterImpl.toString(FilterImpl.java:242)
>      [java]     at java.lang.String.valueOf(String.java:2615)
>      [java]     at java.lang.StringBuffer.append(StringBuffer.java:220)
>      [java]     at org.springframework.osgi.service.importer.DefaultOsgiServiceDependency.<init>(DefaultOsgiServiceDependency.java:52)
>      [java]     at org.springframework.osgi.extender.internal.dependencies.startup.MandatoryImporterDependencyFactory.getServiceDependencies(MandatoryImporterDependencyFactory.java:69)
>      [java]     at org.springframework.osgi.extender.internal.dependencies.startup.DependencyServiceManager.findServiceDependencies(DependencyServiceManager.java:233)
>      [java]     at org.springframework.osgi.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.stageOne(DependencyWaiterApplicationContextExecutor.java:248)
>      [java]     at org.springframework.osgi.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor.refresh(DependencyWaiterApplicationContextExecutor.java:172)
>      [java]     at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.refresh(AbstractDelegatedExecutionApplicationContext.java:136)
>      [java]     at org.springframework.osgi.extender.internal.activator.ContextLoaderListener$2.run(ContextLoaderListener.java:746)
>      [java]     at java.lang.Thread.run(Thread.java:613)
> My first guess would be we are constructing a filter improperly in our Spring config,
but the fact that it only happens some of the time is strange.  If nothing else, it would
be nice if this bit of code was a bit more defensive.

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