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https://issues.apache.org/jira/browse/ODE-968?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13290098#comment-13290098
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Jayant Vaish commented on ODE-968:
----------------------------------
The problem with solving this issue is we are not able to get the return type
of XPathFunction in advance.
As the expression containing the function information is by
net.sf.saxon.xpath.XPathFunctionCall. And there is
no way we can get the return type from this. Also
net.sf.saxon.xpath.XPathFunctionCall contains the function information
but it is private.
> Ode Extension XPath functions executes twice.
> ---------------------------------------------
>
> Key: ODE-968
> URL: https://issues.apache.org/jira/browse/ODE-968
> Project: ODE
> Issue Type: Bug
> Components: BPEL Runtime
> Reporter: Jayant Vaish
> Priority: Critical
> Attachments: DomToString.zip
>
>
> When the XPath query call the ode extension xpathFunction for the first time
> it expects return type of NODESET, If in case it returns something else then
> the exception is thrown and in the catch block it executes that function
> again.
> To reproduce this issue, unzip the attached project in your server's
> var/deploy/
> Set logging level debug for
> "org.apache.ode.bpel.elang.xpath20.runtime.JaxpFunctionResolver.DomToString"
> Now, while running this process
> "org.apache.ode.bpel.elang.xpath20.runtime.JaxpFunctionResolver.DomToString.evaluate(List
> args) throws XPathFunctionException" will be executed twice.
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