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From "Mukul Gandhi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (XALANJ-2572) Extension implementation for data grouping
Date Thu, 09 May 2013 14:25:16 GMT
Mukul Gandhi created XALANJ-2572:
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             Summary: Extension implementation for data grouping
                 Key: XALANJ-2572
                 URL: https://issues.apache.org/jira/browse/XALANJ-2572
             Project: XalanJ2
          Issue Type: Task
      Security Level: No security risk; visible to anyone (Ordinary problems in Xalan projects.
 Anybody can view the issue.)
          Components: Xalan-extensions
    Affects Versions: 2.7.1
            Reporter: Mukul Gandhi
            Assignee: Steven J. Hathaway
            Priority: Minor


I thought the Xalan forum may be right place to post this.

I've been thinking on this topic lately. I wrote a Xalan extension quite equivalent to XSLT
2.0 for-each-group element. The implementation I'm submitting doesn't provide full range of
capabilities as XSLT 2.0 for-each-group element, but it seems to be fairly useful to me for
XSLT 1.0 environments. The well known grouping techniques for XSLT 1.0 environments like muenchian
grouping have some limitations I think, for example its difficult to specify multilevel groups
with muenchian technique.

I'm providing source code of the extension implementation, and few examples.

The example files should be collected as follows,

*l1.*

*l2.*

The downside of this extension is that, its an extension and not pure XSLT 1.0. But it may
be used, if Xalan has to be the XSL environment.

There might be few bugs with the submission I'm providing, since I've done limited testing
on this. Any feedback is welcome.

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