Markus,
See http://xml.apache.org/xalan-j/extensions.html#ext-elements. Your
java code must use the
org.apache.xalan.templates.ElemExtensionCall.getAttribute() function,
which has 3 arguments, in order to get the "evaluated" version of the
attribute, which will properly process the curly braces "{}" that I
originally mentioned. The getAttribute() function you're currently using
just returns the raw value of your select attribute.
The below java code worked for me (note elem is of type
org.apache.xalan.templates, not org.w3c.dom.Element):
-------
public void lineWeight(org.apache.xalan.extensions.XSLProcessorContext
context, org.apache.xalan.templates.ElemExtensionCall elem) {
String value = "";
try{
value =
elem.getAttribute("select",context.getContextNode(),context.getTransformer());
} catch (TransformerException e){}
int val;
try
{
val = Integer.parseInt (value);
} catch (NumberFormatException e)
{
e.printStackTrace ();
val = 0;
}
System.out.println("in lineWeight(), value: " + value);
}
Sticker, Markus / Kuehne + Nagel / Ham MI-EC /external wrote:
Sticker, Markus / Kuehne + Nagel / Ham MI-EC /external wrote:
Hello Nathan,
no, I'm sorry it doesn't work:
java.lang.NumberFormatException: For input string:
"{exslt:node-set($def)/bo/totels}"
at java.lang.NumberFormatException.forInputString(Unknown Source)
-----Urspruengliche Nachricht-----
Von: Nathan Nadeau [mailto:n...@gleim.com]
Gesendet: Montag, 4. Oktober 2010 14:54
An: Sticker, Markus / Kuehne + Nagel / Ham MI-EC /external
Cc: xalan-j-users@xml.apache.org
Betreff: Re: xalan-j extension passing the value of a xsl:variable to the
extension class
Markus,
The expression "exslt:node-set($def)/bo/totals" is not getting evaluated because you list it in a non-xsl (<xsl:>) element. Because <my:lineWeight> is not using the XSL namespace, the XSLT processor thinks it is just an element that is to be copied to the output.
Therefore the value of your select attribute is just the string "exslt:node-set($def)/bo/totals", and that is what your extension function is receiving.
Try using
<my:lineWeight select="{exslt:node-set($def)/bo/totals}" />
in your XSLT code, which will tell the processor to evaluate the expression
(note the curly braces).
Sticker, Markus / Kuehne + Nagel / Ham MI-EC /external wrote:
Hello,
I have a problem with my extension, because I didn't get it working to
pass a value of a xsl:variable to my extension.
-------8<-------- XSLT-CODE ----------------------
...
<xsl:variable name="def">
<bo>
<item>1</item>
<line>4</line>
<totals>6</totals>
</bo>
</xsl:variable>
<my:lineWeight select="exslt:node-set($def)/bo/totals" />
....
-------8<-------- Java-CODE ----------------------
public void lineWeight(org.apache.xalan.extensions.XSLProcessorContext
context,
org.w3c.dom.Element elem) {
String value = elem.getAttribute("select");
int val;
try
{
val = Integer.parseInt (value);
} catch (NumberFormatException e)
{
e.printStackTrace ();
val = 0;
}
lineCount += val;
}
-------8<-------- Error ----------------------
java.lang.NumberFormatException: For input string:
"exslt:node-set($def)/bo/totals"
at java.lang.NumberFormatException.forInputString(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at java.lang.Integer.parseInt(Unknown Source)
at kn.iopm.xalan.ext.textFiller.line(textFiller.java:51)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at
org.apache.xalan.extensions.ExtensionHandlerJavaClass.processElement(ExtensionHandlerJavaClass.java:517)
at
org.apache.xalan.templates.ElemExtensionCall.execute(ElemExtensionCall.java:234)
at
org.apache.xalan.templates.ElemForEach.transformSelectedNodes(ElemForEach.java:425)
at org.apache.xalan.templates.ElemForEach.execute(ElemForEach.java:265)
at
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
at
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394)
at
org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:248)
at
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
at
org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2270)
at
org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1356)
at
org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:709)
at
org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1273)
at
org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1251)
at kn.iopm.xalan.ext.run_test.main(run_test.java:28)
Does somebody know what I'm doing wrong? It seams that the SELECT-Attribute
wasn't executed.
thanks for your help
best regards
Markus
Kuehne + Nagel (AG & Co.) KG, Geschaeftsleitung: Hans-Georg Brinkmann
(Vors.), Dirk Blesius, Reiner Heiken, Bruno Mang, Alfred Manke,
Christian Marnetté, Mark Reinhardt, Jens Wollesen, Klaus Jaeger
(stellv.), Sitz: Bremen, Registergericht: Bremen, HRA 21928,
USt-IdNr.: DE 812773878, Persoenlich haftende Gesellschaft: Kuehne &
Nagel A.G., Sitz: Contern/Luxemburg Geschaeftsfuehrender
Verwaltungsrat: Klaus-Michael Kuehne
--
Nathan Nadeau
n...@gleim.com
Software Development
Gleim Publications, Inc.
http://www.gleim.com
