Error parsing variable names in xquery when expression ends with variable 
reference
-----------------------------------------------------------------------------------

                 Key: ODE-646
                 URL: https://issues.apache.org/jira/browse/ODE-646
             Project: ODE
          Issue Type: Bug
          Components: BPEL Compilation/Parsing
    Affects Versions: 1.3.2
            Reporter: Mark Ford
            Priority: Minor


XQuery10ExpressionCompilerImpl.getVariableNames(xquery) results in an exception 
during the parse when the expression ends with a variable reference. 

java.lang.StringIndexOutOfBoundsException: String index out of range: 89
        at java.lang.String.charAt(String.java:558)
        at 
org.apache.ode.bpel.elang.xquery10.compiler.XQuery10ExpressionCompilerImpl.getVariableNames(XQuery10ExpressionCompilerImpl.java:307)
        at 
org.apache.ode.bpel.elang.xquery10.compiler.XQuery10ExpressionCompilerImpl.doJaxpCompile(XQuery10ExpressionCompilerImpl.java:206)
        at 
org.apache.ode.bpel.elang.xquery10.compiler.XQuery10ExpressionCompilerImpl._compile(XQuery10ExpressionCompilerImpl.java:141)
        at 
org.apache.ode.bpel.elang.xquery10.compiler.XQuery10ExpressionCompilerImpl.compile(XQuery10ExpressionCompilerImpl.java:123)
        at 
org.apache.ode.bpel.compiler.BpelCompiler.compileExpr(BpelCompiler.java:558)
        at 
org.apache.ode.bpel.compiler.BpelCompiler.compileExpr(BpelCompiler.java:543)
        at 
org.apache.ode.bpel.compiler.AssignGenerator.compileFrom(AssignGenerator.java:188)


Workaround is to change the expression to have some characters at the end, even 
if it's just a comment.


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