[jira] Commented: (ODE-648) Compiler should throw a meaningful error if / expression is empty

["David Carver (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ODE-648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12854776#action_12854776 ] 

David Carver commented on ODE-648:
----------------------------------

Would you like to see the serialized node output with the error message. 

So something like:

            throw new IllegalStateException("XPath string and xpath node are both null: " + source.toString());

Currently it is just:

            throw new IllegalStateException("XPath string and xpath node are both null. ");




> Compiler should throw a meaningful error if <from>/<to> expression is empty
> ---------------------------------------------------------------------------
>
>                 Key: ODE-648
>                 URL: https://issues.apache.org/jira/browse/ODE-648
>             Project: ODE
>          Issue Type: Bug
>          Components: BPEL Compilation/Parsing
>    Affects Versions: 1.2, 1.3.2, 1.3.3, 2.0
>            Reporter: Tammo van Lessen
>            Assignee: Tammo van Lessen
>             Fix For: 1.3.5
>
>
> If the expression is empty, the only error message is from the expression compiler and is quite confusing:
> java.lang.IllegalStateException: XPath string and xpath node are both null
>     at org.apache.ode.bpel.elang.xpath20.compiler.XPath20ExpressionCompilerImpl.doJaxpCompile.
> Fixing this issue will also help if a copy and paste engineer added a BPEL 1.1 <from expression="someexp"/> to a BPEL 2.0 process ;)

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