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Adam McCormickSubject: Merge Multiple Files While Checking For Duplicates
Author: Adam McCormick
Date: 20 Jul 2009 08:15 PM
Ok here's the situation; I have multiple xml files that I need to merge into one compiled xml file. The files look something like this:
Note that I only show 3 files but there can be, and are, many more

data1.xml
<report name="report1">
<items name="items1">
<item name="item-one" data="0" />
<item name="item-two" data="2" />
</items>
</report>

data2.xml
<report name="report1">
<items name="items1">
<item name="item-one" data="0" />
<item name="item-two" data="2" />
<item name="item-three" data="7" />
</items>
</report>

data3.xml
<report name="report1">
<items name="items1">
<item name="item-one" data="8" />
<item name="item-two" data="8" />
<item name="item-three" data="9" />
</items>
</report>
After merging these docs I would like to have a result like this:

result.xml
<data>
<items name="items1">
<item name="item1">
<day number="1" value="0" />
<day number="2" value="0" />
<day number="3" value="8" />
</item>
<item name="item2">
<day number="1" value="2">
<day number="2" value="2">
<day number="3" value="8" />
</item>
<item name="item3">
<day number="1" value="0(possibly n/a or nothing it doesn't matter)">
<day number="2" value="7">
<day number="3" value="9" />
</item>
</items>
</data>

I created a master file that lists the paths to all the data files. The problem is I can't just go through every file and compare the current item to all the files and get its data becuase if items in some other file don't appear in file 1 I will never know because I'll never search for them. I created a small test xsl that seemed to almost (stressing almost) solve my problem:

masterfile.xsl
<xsl:template match="/">
<xsl:apply-templates select="document(files/file[1]/@name)/report/items" />
</xsl:template>

<xsl:template match="items">
<xsl:variable name="combined" select="document('data1.xml')/report/items/item | document('data2.xml')/report/items/item[not(@name = document('data1.xml')/report/items/item/@name)]" />

<xsl:apply-templates select="$combined" />

</xsl:template>

<xsl:template match="item">
<xsl:variable name="currentname" select="@name" />
<xsl:value-of select="$currentname" />
<br />
<xsl:for-each select="document('masterfilelist.xml')/files/file">
Day:
<xsl:variable name="itemdata" select="document(@name)/report/items['items1']/item[@name=$currentname]/@data" />
<xsl:value-of select="$itemdata" />
<br />
</xsl:for-each>
<br />
</xsl:template>
</xsl:transform>

Please excuse me if it's a complete disaster and makes alot of you cringe but I've only been at this xsl stuff for a week now.

The output from this style sheet shows me this:
item-one
Day: 0
Day: 0
Day: 8

item-two
Day: 2
Day: 2
Day: 8

item-three
Day:
Day: 7
Day: 9

This is soooo close (unless I'm duping myself). The major problem is it only works with 2 files. I need to able to recurse the logic in the select for the combine variable, so that in the end its been combined with all files but I'm at a complete loss.

Please, any help would very very appreciated!

Thanks you everyone!
Posttop
Tony LavinioSubject: Merge Multiple Files While Checking For Duplicates
Author: Tony Lavinio
Date: 10 Aug 2009 03:59 PM
Which version of Stylus Studio, and which XSLT engine are you using?
   
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