[
https://issues.apache.org/jira/browse/VXQUERY-157?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14682194#comment-14682194
]
Shivani Mall commented on VXQUERY-157:
--------------------------------------
My new patch resolves this issue. Can this be resolved?
> Descendant or Self with Child Path Step
> ---------------------------------------
>
> Key: VXQUERY-157
> URL: https://issues.apache.org/jira/browse/VXQUERY-157
> Project: VXQuery
> Issue Type: Improvement
> Reporter: Preston Carman
> Assignee: Preston Carman
>
> The system translates the slash slash into two path steps (descendant or self
> and child). The descendant or self expression produces many tuples that are
> immediately discarded by the child path expression.
> An optimization would be to provide both path steps in a single expression.
> The single expression would minimize materialization and filter the results.
> Suggestion: create a expression that executes both descendant and self and
> child in a single runtime expression.
> - Needs runtime and rewrite rule to implement.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
