[jira] [Updated] (XALANJ-2572) Extension implementation for data grouping

["Mukul Gandhi (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/XALANJ-2572?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mukul Gandhi updated XALANJ-2572:
---------------------------------

    Attachment: test_l2.xsl
                test_l1.xsl
                output_l2.xml
                test_l2.xml
                output_l1.xml
                test_l1.xml

I'm attaching the example files.
                
> 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
>         Attachments: GroupExtensionUtil.java, Group.java, output_l1.xml, output_l2.xml, test_l1.xml, test_l1.xsl, test_l2.xml, test_l2.xsl
>
>
> 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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