Re: generating xml from xml

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Subject: Re: generating xml from xml
From: Wendell Piez <wapiez@xxxxxxxxxxxxxxxx>
Date: Mon, 10 Nov 2003 11:19:09 -0500

Murali,

Keys were invented for just this kind of application.

Declare a key that lets you retrieve your field mapping elements by their id values:

<xsl:key name="field-by-id" match="_" use="@id"/>

Then, for example,

<xsl:template match="Trade/*">
  <xsl:element name="key('field-by-id',local-name())/fn">
    <xsl:apply-templates/>
  </xsl:element>
</xsl:template>

would match a child of Trade and create an element with the appropriate name (if I have it right).

Really, I'm helping you less by writing the code than I would by explaining it better -- but you can (and should) find a good explanation of keys in a published resource.

Whether MSXML3.0 supports keys, I can't say for sure (though I think it does). If not, this can still be done with brute force (albeit expensively) using an XPath location path.

Cheers,
Wendell

At 10:31 AM 11/10/2003, you wrote:

Hi, I have a situation where I have to apply xsl on some xml and generate slightly different xml. I hope you people can help me.

this is my xml :

<Data Timestamp="2003-11-05 21:00:07">
        <Fields>
                <_ fn="Level1" id="F0"/>
                <_ fn="Level2" id="F1"/>
                <_ fn="Level3" id="F2"/>
                <_ fn="TradeDate" id="F3"/>
                <_ fn="TradeId" id="F4"/>
                <_ fn="User" id="F5"/>
        </Fields>
        <Trades>
                <Trade>
                        <F0/>
                        <F1/>
                </Trade>
                <Trade>
                        <F0/>
                        <F1>Entry</F1>
                        <F2/>
                </Trade>
                <Trade>
                        <F0>Mid</F0>
                        <F1/>
                        <F2/>
                        <F3/>
                        <F4>126</F4>
                </Trade>
        </Trades>
</Data>

and I am trying to generate :


<Data Timestamp="2003-11-05 21:00:07">
        <Trades>
                <Trade>
                        <Level1/>
                        <Level2/>
                </Trade>
                <Trade>
                        <Level1/>
                        <Level2>Entry</Level2>
                        <Level3/>
                </Trade>
                <Trade>
                        <Level1>Mid</Level1>
                        <Level2/>
                        <Level3/>
                        <TradeDate/>
                        <TradeId>126</TradeId>
                </Trade>
        </Trades>
</Data>

and my limitation is, the parser I can use should be MSXML3.0 or less.

======================================================================
Wendell Piez                            mailto:wapiez@xxxxxxxxxxxxxxxx
Mulberry Technologies, Inc.                http://www.mulberrytech.com
17 West Jefferson Street                    Direct Phone: 301/315-9635
Suite 207                                          Phone: 301/315-9631
Rockville, MD  20850                                 Fax: 301/315-8285
----------------------------------------------------------------------
  Mulberry Technologies: A Consultancy Specializing in SGML and XML
======================================================================

XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list

Current Thread

generating xml from xml
- Murali Korrapati - Mon, 10 Nov 2003 10:31:13 -0500 (EST)
  - David Carlisle - Mon, 10 Nov 2003 11:05:17 -0500 (EST)
    - Wendell Piez - Mon, 10 Nov 2003 11:31:05 -0500 (EST)
  - Wendell Piez - Mon, 10 Nov 2003 11:29:15 -0500 (EST) <=
  - <Possible follow-ups>
  - Jarno . Elovirta - Mon, 10 Nov 2003 11:10:46 -0500 (EST)
    - Wendell Piez - Mon, 10 Nov 2003 11:34:26 -0500 (EST)
  - Murali Korrapati - Mon, 10 Nov 2003 12:23:41 -0500 (EST)
    - Wendell Piez - Mon, 10 Nov 2003 14:01:13 -0500 (EST)

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