Re: Two file problem.

Hi David,

if the the two files are structural equivalent you could use a recursive process
traversing both files or trees in parallel. See below for a script with searches
differences between two files -  well it stops when it encounters the first
difference. This script could be extended to meet your needs I think. And BTW it
doesn't need any extensions at all.

Tobias

<?xml version='1.0'?>

<xsl:stylesheet xmlns:xsl='http://www.w3.org/1999/XSL/Transform' version='1.0'>

<xsl:output method="xml" version="1.0" encoding="ISO-8859-1" indent="yes" />
<xsl:decimal-format name="en" decimal-separator='.'/>
<!-- -->
<xsl:strip-space elements="*"/>
<xsl:preserve-space elements="xsl:text"/>

<!--
********************************************************************************
-->
<xsl:param name="fileB" select="'docB.xml'"/>

<xsl:template match="/">
    <xsl:variable name="docB" select="document($fileB)"/>
    <xsl:message> FILE B: <xsl:value-of select="$fileB"/></xsl:message>
    <xsl:call-template name="diff">
            <xsl:with-param name="nodeSetA" select="./*"/>
            <xsl:with-param name="nodeSetB" select="$docB/*"/>
            <xsl:with-param name="indent" select="''"/>
    </xsl:call-template>
</xsl:template>

<xsl:template name="diff">
    <xsl:with-param name="nodeSetA"/>
    <xsl:with-param name="nodeSetB"/>
        <xsl:with-param name="indent"/>

        <xsl:if test="not(name($nodeSetA[position()=1]) =
name($nodeSetB[position()=1]))">
            <xsl:message terminate='yes'>Structural difference
found!</xsl:message>
        </xsl:if>
    <xsl:if test="$nodeSetA">
                <xsl:message>Comparing:<xsl:value-of
select="$indent"/>A(<xsl:for-each select="$nodeSetA"><xsl:value-of
select="name(.)"/><xsl:text> </xsl:text></xsl:for-each>) B(<xsl:value-of
select="name($nodeSetB)"/>) </xsl:message>
                <xsl:call-template name="diff"> <!-- siblings -->
                        <xsl:with-param name="nodeSetA" select="$nodeSetA[not
(position()=1)]"/>
                        <xsl:with-param name="nodeSetB" select="$nodeSetB[not
(position()=1)]"/>
                        <xsl:with-param name="indent" select="$indent"/>
                </xsl:call-template>
                <xsl:call-template name="diff"> <!-- childs -->
                        <xsl:with-param name="nodeSetA"
select="$nodeSetA[position()=1]/*"/>
                        <xsl:with-param name="nodeSetB"
select="$nodeSetB[position()=1]/*"/>
                        <xsl:with-param name="indent" select="concat($indent,'
')"/>
                </xsl:call-template>
    </xsl:if>
</xsl:template>

</xsl:stylesheet>

"Pawson, David" wrotes:

> problem.
>
> Two xml files
>
> file 1
> <fa>
>   <a name="a1">3</a>
>   <a name="a2">5</a>
>   <a name="a3">2</a>
>   <a name="new">1</a>
> </fa>
>
> file 2
> <fb>
>   <a name="a1">1</a>
>
>   <a name="a3">1</a>
>   <a name="a4">2</a>
> </fb>
>
> required output
> <res>
>    <a name="a1">4</a>
>   <a name="a2">5</a>
>   <a name="a3">3</a>
>   <a name="a4">2</a>
>   <a name="new">1</a>
> </res>
> I.e. I want to sum the corresponding elements to the output file.
>
> Issues with my present solution.
>   Using a <for-each> on the input document I can add, to the output
>   using
> processor:node-set(document(file-other.xml))/fx/a[@name=current()/@name]
>   the value of the corresponding element from the other file.
>
>   If  I use file 1 as the main document source, I can catch those
>   which match in file 2, but not those unique to file 2 (<a name="new">
> in the example.)
>   If I use file 2 as the main document source, I can get those
>   which match in file 1, but will miss those which are unique to file 1.
>
>  Can anyone suggest a method of ensuring that I capture in the output
>  all the <a> elements from either file, without using more extensions
>  if possible. I think its the cup function, but no one has come up
>  with this as an extension even ... or have they?
>
> TIA DaveP
>
>  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list


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