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[list4xt] Re: Null pointer exception in XT

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Hi Larry,

XSLProcessorImpl is thread safe as long as you don't use the same instance
concurrently. If you whish to process the same style sheet in different
thread, you need to clone the XSLProcessImpl isntance and that' is, no more
synch needed.

Hope this help,

Sebastien S.

> -----Original Message-----
> From: list4xt-bounce@4xt.org [mailto:list4xt-bounce@4xt.org]On Behalf Of
> Larry_Mason@i2.com
> Sent: Thursday, October 11, 2001 12:52 PM
> To: list4xt@4xt.org
> Cc: jjc@jclark.com
> Subject: [list4xt] Null pointer exception in XT
>
>
> I believe I have an unsafe thread condition. Below is the stack
> trace for
> a very repeatable condition when I don't synchronize calls to the
> transformation process. Before I start wading through the code, can
> anyone tell me what type of XSLT might be the cause? For example,
> node-set or copy-of or ...
> Thanks in advance.
> Larry
>
> XSLT error:java.lang.NullPointerException
>
> java.lang.NullPointerException
> at
> com.jclark.xsl.sax.MultiNamespaceResult.endElementContent(MultiNam
> espaceResult.java,
> Compiled Code)
> at com.jclark.xsl.sax.ResultBase.endElement(ResultBase.java,
> Compiled Code)
> at com.jclark.xsl.tr.CopyAction.invoke(CopyAction.java, Compiled
> Code)
> at com.jclark.xsl.tr.AppendAction.invoke(AppendAction.java,
> Compiled Code)
> at
> com.jclark.xsl.tr.ProcessContextImpl.processSafe(ProcessContextImpl.java,
> Compiled Code)
> at
> com.jclark.xsl.tr.ProcessContextImpl.process(ProcessContextImpl.ja
> va,Compiled
> Code)
> at com.jclark.xsl.tr.ProcessAction.invoke(ProcessAction.java,
> Compiled Code)
> at com.jclark.xsl.tr.AppendAction.invoke(AppendAction.java,
> Compiled Code)
> at
> com.jclark.xsl.tr.LiteralElementAction.invoke(LiteralElementAction.java,
> Compiled Code)
> at com.jclark.xsl.tr.AppendAction.invoke(AppendAction.java,
> Compiled Code)
> at
> com.jclark.xsl.tr.ProcessContextImpl.processSafe(ProcessContextImpl.java,
> Compiled Code)
> at
> com.jclark.xsl.tr.ProcessContextImpl.process(ProcessContextImpl.ja
> va,Compiled
> Code)
> at com.jclark.xsl.tr.ProcessAction.invoke(ProcessAction.java,
> Compiled Code)
> at com.jclark.xsl.tr.AppendAction.invoke(AppendAction.java,
> Compiled Code)
> at
> com.jclark.xsl.tr.ProcessContextImpl.processSafe(ProcessContextImpl.java,
> Compiled Code)
> at
> com.jclark.xsl.tr.ProcessContextImpl.process(ProcessContextImpl.ja
> va,Compiled
> Code)
> at com.jclark.xsl.tr.ProcessAction.invoke(ProcessAction.java,
> Compiled Code)
> at com.jclark.xsl.tr.AppendAction.invoke(AppendAction.java,
> Compiled Code)
> at com.jclark.xsl.tr.CopyAction.invoke(CopyAction.java, Compiled
> Code)
> at com.jclark.xsl.tr.AppendAction.invoke(AppendAction.java,
> Compiled Code)
> at
> com.jclark.xsl.tr.ProcessContextImpl.processSafe(ProcessContextImpl.java,
> Compiled Code)
> at
> com.jclark.xsl.tr.ProcessContextImpl.process(ProcessContextImpl.ja
> va,Compiled
> Code)
> at com.jclark.xsl.tr.ProcessAction.invoke(ProcessAction.java,
> Compiled Code)
> at com.jclark.xsl.tr.AppendAction.invoke(AppendAction.java,
> Compiled Code)
> at com.jclark.xsl.tr.IfAction.invoke(IfAction.java, Compiled Code)
> at com.jclark.xsl.tr.IfAction.invoke(IfAction.java, Compiled Code)
> at com.jclark.xsl.tr.AppendAction.invoke(AppendAction.java,
> Compiled Code)
> at
> com.jclark.xsl.tr.ProcessContextImpl.processSafe(ProcessContextImpl.java,
> Compiled Code)
> at com.jclark.xsl.tr.SheetImpl.process(SheetImpl.java, Compiled
> Code)
> at
> com.jclark.xsl.sax.XSLProcessorImpl.parse(XSLProcessorImpl.java, Compiled
> Code)
>
>
>
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