[teiid-issues] [JBoss JIRA] Commented: (TEIID-1615) Add features to support relate planning

[Steven Hawkins (JIRA)]

    [ https://issues.jboss.org/browse/TEIID-1615?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12606423#comment-12606423 ] 

Steven Hawkins commented on TEIID-1615:
---------------------------------------

Modified subquery handling to be even more xml idomatic.  Subqueries will resolve as if they are xml queries.  In addition to the normal xml restriction, subqueries have the following:
-the select clause must refer to a element from the same mapping class as the from clause
-the from clause cannot be aliased.

There select clause also functions as a normal select clause (it selects scalar values) - it does not perform subdocument selection.

Also added the TestRelate suite which has a sample relate implementation.

> Add features to support relate planning
> ---------------------------------------
>
>                 Key: TEIID-1615
>                 URL: https://issues.jboss.org/browse/TEIID-1615
>             Project: Teiid
>          Issue Type: Feature Request
>          Components: Query Engine
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>             Fix For: 7.4.1
>
>
> MetaMatrix had an xml relate planner feature that can be reproduced with standard xml processing with additional features.

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