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Subject:
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Array like processing (Xpath 1 / XSLT 1)
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Posted By:
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akentanaka
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Post Date:
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7/1/2008 8:44:52 AM
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I am building a new XML out of an XML. But first, I have to perform some validation/translation routines and db read that will build the target text() node. This extra process will "suspend" the XSLT processing so I will have to pass a number of times between XMLs to build a new XML. It's like an array handling routine where the array is populated and read back later.
Assuming, XML_01 contains a starting point element like
<value/>
XML_02 will be iterated. On each pass a new node/path is derived
First pass:
<field name="field1">data 1</field>
Second pass:
<field name="field2">data 2</field>
Third pass:
<field name="field3">data 3</field>
On each pass above, XML_01 evolves into
First pass:
<value>
<field name="field1">data 1</field>
</value>
Second pass:
<value>
<field name="field1">data 1</field>
<field name="field2">data 2</field>
</value>
Third pass - final:
<value>
<field name="field1">data 1</field>
<field name="field2">data 2</field>
<field name="field3">data 3</field>
</value>
The reason I'm doing this is because I need to hold more than 40 or so fields and field values. Having a token to hold all of them individually maybe too cumbersome to maintain.
Thanks for the usual guidance!
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Reply By:
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akentanaka
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Reply Date:
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7/2/2008 2:22:29 AM
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I will answer my own inquiry. 
Array like processing needs another xslt physically residing somewhere that needs to be imported to the one XSLT that builds the target XML.
Which is a luxury that I don't have.
So, I had to amend my validation lookup table by introducing
- use_flag if I need the field in the target XML
- mapping field
- and the node-set() instruction to find the data from the source XML
By putting the Xpath logic in the database, my XSLT code becomes simple and cleaner.
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