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https://issues.apache.org/jira/browse/VXQUERY-166?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14647114#comment-14647114
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Shivani Mall edited comment on VXQUERY-166 at 7/30/15 4:14 AM:
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Here is what it all boiled down to. There is a function called
encodesequencemap in the static context class which adds name test ('*') to the
sequencemap(global variable in static context). The first line in this function
sets int (code) to the value returned by lookupsequuence function. In order for
encodesequencemap function to add the name test to the sequencemap the
lookupsequence function must return -1.
The issue is that lookupsequence function can not return -1. It return -1 only
when parent(static context) is null. However, when the parent is null,
sequencemap contains all the values including the name test('*'). Since the
check for sequencemap comes before the check for parent(!= null), so it returns
an integer(which is not -1)
Now when it gets back to the encodesequencemap func, code is not -1, so it can
not add the name test to the sequence map. But sequence map is still empty.
Since the sequence map is empty one of the printer functions runs into null
pointer exception in an attempt to print this empty seequence.
How can I deal with this?
I hope I could explain the problem. Please let me know if there is any part
that needs clarification.
was (Author: shivani):
Here is what it all boiled down to. There is function called encodesequencemap
in the static context class which has adds name test ('*') to the sequencemap.
The function first looks up the sequence through a lookupsequuence function. In
order for encodesequencemap function to add the name test to the sequence map
the lookupsequence function must return -1.
However, the lookupsequence function can not return -1. It return -1 only when
parent(static context) is null. However, when the parent sequence map contains
all the values including the name test so it instead returns the code of the
name test and not -1.
Now when it gets back to the encodesequencemap code is not -1, so it can not
add the name test to the sequence map. But sequence map. Since the sequence map
is empty one of the printer functions runs into null pointer exception in an
atteempt to print this empty seequence.
How can I deal with this?
I hope I could explain the problem. Please let me know if there is any part
that needs clarification.
> node-test implementation
> ------------------------
>
> Key: VXQUERY-166
> URL: https://issues.apache.org/jira/browse/VXQUERY-166
> Project: VXQuery
> Issue Type: Bug
> Reporter: Shivani Mall
>
> node test is not implemented yet. XMark Query 19 fails as a result. Should
> this be dealt as a rewrite rule, in translation or a runtime
> function/operator?
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