Jeni, Thank you for your reply.
Of course you need to know what regular expression is being used to be
able to tell which regex groups you're actually interested in...
Yes, I should have mentioned that in my case I will never know
this, as the regex comes in a separate XML.
I'm really looking for examples of how the Java regex classes (or
any Java classes for that matter) are used as XSLT extensions. I
can run all the simple java.Date examples etc,. but when I need to
start mixing object handles - as in the java Matcher and Pattern
classes - I can't seem to get it working.
Is is better to create my own java wrapper class to hide the
complexities ?
By the way, I'm not sure why you're using "//" in $rule//@name
Its a typo by me.
If you're using Saxon 7.6, why not use the built-in regular expression
support rather than Java extensions?
http://www.biglist.com/lists/xsl-list/archives/200201/msg00862.html
I didn't see any regex support on the 7.6 page, but I can follow
this up on the saxon list.
Thanks again,
Kind regards, John,
Jeni Tennison wrote:
Hi John,
Hi, Does anyone have an example of using the java.util.regex
functions to return the "components" of the regex that matched.
[snip]
Also, I'm using the Saxon 7.6 processor.
If you're using Saxon 7.6, why not use the built-in regular expression
support rather than Java extensions?
Example: if my regex is defined as:-
(([^_]*)_PARA)|((.*?)(PARA)(.*?))
and my input is "ABC_PARA"
Then I need to know what portions of the input matched
each (if any) part of the regex groups, ([^_]*) and (.*?) etc,.
in terms of group number and matching string.
If you use <xsl:analyze-string> then within the
<xsl:matching-substring>, the regex-group() function gives you access
to the values of the regex groups. Try:
<xsl:for-each select="$rule//Type">
<xsl:variable name="tdlType" select="." />
<xsl:analyze-string select="." regex="{$regex}">
<xsl:matching-substring>
<RULE_MATCH>
<xsl:value-of select="$rule//@name" />
</RULE_MATCH>
<REGEX><xsl:copy-of select="$regex" /></REGEX>
<GROUP1><xsl:value-of select="regex-group(1)" /></GROUP1>
<GROUP2><xsl:value-of select="regex-group(2)" /></GROUP2>
<GROUP3><xsl:value-of select="regex-group(3)" /></GROUP3>
...
</xsl:matching-substring>
</xsl:analyze-string>
</xsl:for-each>
Of course you need to know what regular expression is being used to be
able to tell which regex groups you're actually interested in...
By the way, I'm not sure why you're using "//" in $rule//@name -- this
will return all the name attributes of all the elements that are
descendants of $rule, as well as of $rule itself, and return them in a
whitespace-separated list (this being XSLT 2.0). Is that what you
really want?
Cheers,
Jeni
---
Jeni Tennison
http://www.jenitennison.com/
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list