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1. Take one document and transform it into a document of a similar schema
Start with the identity transform:
<xsl:template>
<xsl:copy>
<xsl:apply-templates
select="@* | * | comment() | pi() | text()" />
</xsl:copy>
</xsl:template>
Then I simply add an <xsl:template> for every special case.
For example, to filter out all nodes called Bob and their children, add
<xsl:template match="Bob"/>
To rename Bob to Joe:
<xsl:template match="Bob">
<Joe>
<xsl:apply-templates/>
</Joe>
</xsl:template>
2. Take one document and transform it into a document of a very different
schema
This one is more complex. I take a sample input document and a
sample
output document.
Sample input:
<Entry>
<Identification>
<Name firstname="Joe" surname="Cool/>
<Id
number="000000000123"/>
<Nationality>Canadian</Nationality>
</Identification>
<Employment>
<Company name="Microsoft"/>
<Occupation
department="facilities">Janitor</Occupation>
</Employment>
</Entry>
Sample output:
<Person>
<Name>
<FirstName>Joe</FirstName>
<LastName>Cool</LastName>
</Name>
<Job>Janitor</Job>
</Person>
I add the defailt behavior templates and put them into my stylesheet
<xsl:template><xsl:apply-templates/></xsl:template>
<xsl:template match="textnode()"><xsl:value-of/></xsl:template>
I create a <xsl:template match="/"> to match the root and
put the
sample output document into that template.
<xsl:template match="/">
<Person>
<PersonsName>
<FirstName>Joe</FirstName>
<LastName>Cool</LastName>
</PersonsName>
<Job>Janitor</Job>
</Person>
</xsl:template>
The I look at the sample input doc and my stylesheet and see how to
go from one to another. I leave the stuff that doesn't change, and
put
the other stuff into an new template, adding an apply-templates call:
<xsl:template match="/">
<Person>
<xsl:apply-templates
select="/Entry/Identification"/>
<Job>Janitor</Job>
</Person>
</xsl:template>
<xsl:template match="Identification">
<PersonsName>
<FirstName>Joe</FirstName>
<LastName>Cool</LastName>
</PersonsName>
</xsl:template>
Then replace the insides of the new template with xsl:
<xsl:template match="Identification">
<PersonsName>
<FirstName><xsl:value-of
select="Name/@firstname"/></FirstName>
<LastName><xsl:value-of
select="Name/@surname"/></LastName>
</PersonsName>
</xsl:template>
and continue the process till the doc is built up:
<xsl:template><xsl:apply-templates/></xsl:template>
<xsl:template match="textnode()"><xsl:value-of/></xsl:template>
<xsl:template match="/">
<Person>
<xsl:apply-templates
select="/Entry/Identification"/>
<xsl:apply-templates
select="/Entry/Employment/Occupation"/>
</Person>
</xsl:template>
<xsl:template match="Identification">
<PersonsName>
<FirstName><xsl:value-of
select="Name/@firstname"/></FirstName>
<LastName><xsl:value-of
select="Name/@surname"/></LastName>
</PersonsName>
</xsl:template>
<xsl:template match="Occupation">
<Job><xsl:value-of
select="./text()"/></Job>
</xsl:template>
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