[overlord-issues] [JBoss JIRA] (SRAMP-202) The not() function doesn't quite work with relationships

[Eric Wittmann (JIRA)]

Eric Wittmann created SRAMP-202:
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             Summary: The not() function doesn't quite work with relationships
                 Key: SRAMP-202
                 URL: https://issues.jboss.org/browse/SRAMP-202
             Project: S-RAMP
          Issue Type: Bug
      Security Level: Public (Everyone can see)
            Reporter: Eric Wittmann
            Assignee: Eric Wittmann
            Priority: Minor
             Fix For: 0.3.1 - jBPM - bugfix 1


The not() function works well with properties, but not quite with relationships.  An example of what doesn't work:

/s-ramp/wsdl/Part[not(element)]

That should return all Parts that do *not* have an element relationship.  Since relationships are found by doing a JOIN, it's actually tricky to invert.  Right now I think the query engine will produce something that would return all Parts that have some *other* relationship - but it won't return Parts without any relationships at all.  I'm not sure how to do the latter other than by using an IN with a subquery (which is supported by ModeShape but is non-standard).

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