Re: xalan extensions, cont'd.

Brad Cox 3 Feb 2002 14:45:56 -0000

That's it!! Simple! Now I wonder why I didn't try that.

One last glitch and I"m there. This is working except that its stripping the xhtml markup from $pageText. How to make it serialize the <page>...</page> content, processed by apply-templates, to a String while retaining all xhtml markup?

<xsl:template match="page"> <xsl:variable name="pageText"> #parse("vel/macros.vel") #taskOpening("@ident") <xsl:apply-templates select="*"/> #taskClosing("@ident") </xsl:variable> <xsl:value-of select="task:addPage($task, string(@ident), string($pageText))" /> </xsl:template>


On Sunday, February 3, 2002, at 02:09 AM, Gary L Peskin wrote:

How about something like:

<xsl:template match="page">

  <xsl:variable name="someName">
    <xsl:apply-templates/>
  </xsl:variable>

<xsl:value-of select="task:addPage($task, string(@ident), $someName)">

</xsl:template>

The type of $someName should be an XRTreeFrag, I believe.

As far as the optional first argument, neither of those types is used
for extension functions.  These are for extension elements.  You can
specify an optional ExpressionContext as the first argument if you need
any of its methods.

HTH,
Gary

-----Original Message-----
From: Brad Cox [mailto:[EMAIL PROTECTED]
Sent: Saturday, February 02, 2002 7:20 PM
To: [EMAIL PROTECTED]
Cc: Brad Cox; Frank E. Weiss
Subject: xalan extensions, cont'd.


More on the previously posted question. After considerable
tinkering, the code is actually running, invoking the
addPage(key, value) method on the task instance I passed as a
parameter as intended.

The problem is that the value argument, as computed as
"string(.)", isn't what I want. I want the value to be the
result of <xsl:apply-templates/>, e.g. not the current node from
the input, but the node after being transformed by the other
templates in this file. I don't see how to do this. Can someone
please help?

Here's the full xsl file I'm using:

<?xml version="1.0"?>
<xsl:stylesheet version="1.0"
        xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
        xmlns:lxslt="http://xml.apache.org/xslt";
        xmlns:java="http://xml.apache.org/xslt/java";
        xmlns:task="edu.virtualschool.model.Task"
        extension-element-prefixes="task"
        exclude-result-prefixes="java"

<xsl:output method="html"/>
<xsl:param name="task"></xsl:param>

<xsl:template match="/task">
#parse("vel/macros.vel")
#set($totalPages = <xsl:value-of select="count(page)"/>)
#set($pageTitles = [<xsl:for-each select="page">"<xsl:value-of
select="@ident"/>",</xsl:for-each>"Submit page"])
<xsl:apply-templates select="page"/> </xsl:template>

<xsl:template match="page">
<xsl:value-of select="task:addPage($task, string(@ident),
string(.))" /> </xsl:template>

<xsl:template
match="EmailQuestion|EssayQuestion|NameQuestion|UrlQuestion">
#<xsl:value-of select="name()"/>("<xsl:value-of
select="@ident"/>" "<xsl:value-of select="normalize-
space(text())"/>")
</xsl:template>

<xsl:template match="MenuQuestion|RadioQuestion|CheckboxQuestion">
#<xsl:value-of select="name()"/>("<xsl:value-of
select="@ident"/>" "<xsl:value-of select="normalize-
space(text())"/>" [<xsl:for-each select="option">"<xsl:value-of
select="."/>"<xsl:if test="not(position() =
last())">,</xsl:if></xsl:for-each>])
</xsl:template>

<xsl:template match="*">
<xsl:copy-of select="."/>
</xsl:template>

</xsl:stylesheet>

For completeness, the code that launches the transform (from
Task.java)

TransformerFactory tFactory =
TransformerFactory.newInstance(); Transformer transformer =
tFactory.newTransformer(new
StreamSource(xslFile.toString()));
transformer.setParameter( "task", this );
StringWriter sw = new StringWriter();
transformer.transform(
        new StreamSource(xmlFile.toString()),
        new StreamResult(sw)
);
System.err.println("out:"+sw); // printed and discarded
this.xmlModified = xmlFile.lastModified(); this.dvslModified
= dvslFile.lastModified();

And the addPage method (from Task.java). I don't understand the
first two arguments; apparently they aren't needed/required/used
based on it working after commenting them
out.

        public void addPage(
                //
org.apache.xalan.extensions.XSLProcessorContext context,
                // org.apache.xalan.templates.ElemExtensionCall element,
                String ident,
                String body
        )
        {
                String pageText =
                        "#parse(\"vel/macros.vel\")\n"+
                        "#taskOpening(\""+ident+"\")\n"+
                        body+"\n"+
                        "#taskClosing(\""+ident+"\")\n"+
                        "";
                System.err.println("addPage:"+pageText);
                pages.add(new Page(this, ident, pageText, new
IntegerField(pages.size())));
        }

Brad Cox, Ph.D.; [EMAIL PROTECTED] 703 361 4751
For industrial age goods there were checks and credit cards.
For everything else there is http://virtualschool.edu/mybank
Java Web Application Architecture: http://virtualschool.edu/jwaa

Re: xalan extensions, cont'd.

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