Xslt:include within CLOB

Question

Hello community,
There is a table with CLOB-fields containing XSLT documents. I read this table from java and do XSL-Transformation in Java, too.
Now I need to split this documents in separate modules and save each modul in an own table entry. I want to compose this documents by the <xsl:include> tag. The dirty way is to load the main document from java, parse it and load missing parts from darabase when the document contains <xsl:include>.
I would be more happy, if Oracle supports <xsl:include> build in. For example, I would write <xsl:include href="key=3"> or something like this and hope that Oracle parses this and gives me the composed XSLT document or even the parsed XSLT result. If necessary, I can use PL/SQL, too.
What is the best way to do this? Can you give me a hint or key word for the Oracle technology I should look for?
Thanks!
Alex

Answer 1

The XML forums would have been better though.
Given what is currently supported by the Oracle XSLT processor, here's the basic approach you can follow :
SQL> create table stylesheet_table (
  2    doc_id    integer
  3  , doc_name  varchar2(30)
  4  , doc       clob
  5  );
Table created
SQL>
SQL> insert into stylesheet_table values (1, 'main',
  2  '<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  3   <xsl:template match="/">
  4     <xsl:text>The document has </xsl:text>
  5     <xsl:call-template name="nodeCount"/>
  6     <xsl:text> node(s)</xsl:text>
  7   </xsl:template>
  8   <xsl:include href="/oradb/DEV/STYLESHEET_TABLE/ROW[DOC_ID=2]/DOC/text()"/>
  9  </xsl:stylesheet>'
10  );
1 row inserted
SQL>
SQL> insert into stylesheet_table values (2, 'nodeCount',
  2  '<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  3   <xsl:template name="nodeCount">
  4     <xsl:value-of select="count(descendant::node())"/>
  5   </xsl:template>
  6  </xsl:stylesheet>'
  7  );
1 row inserted
SQL>
SQL> select xmltransform(
  2           xmltype('<root><item>ABC</item></root>')
  3         , dburitype('/oradb/DEV/STYLESHEET_TABLE/ROW[DOC_ID=1]/DOC/text()').getxml()
  4         )
  5  from dual;
XMLTRANSFORM(XMLTYPE('<ROOT><I
The document has 3 node(s)
The key is the ability to reference an external document via the oradb scheme (for documents stored in custom tables) or in the XMLDB repository.
Please also note that "DEV" is my schema here :
/oradb/DEV/STYLESHEET_TABLE/ROW[DOC_ID=1]/DOC/text()so if you want to test, of course replace it with your own.