User-Defined Jar Files
If access is via a JAR file, the URI of the JAR file must be specified using the following syntax:
xmlns:classNS="java:classname?path=jar:uri-of-jarfile!/"
The method is then called by using the prefix of the namespace URI that identifies the class: classNS:method() |
In the above:
java: indicates that a Java function is being called
classname is the name of the user-defined class
? is the separator between the classname and the path
path=jar: indicates that a path to a JAR file is being given
uri-of-jarfile is the URI of the jar file
!/ is the end delimiter of the path
classNS:method() is the call to the method
Alternatively, the classname can be given with the method call. Here are two examples of the syntax:
xmlns:ns1="java:docx.layout.pages?path=jar:file:///c:/projects/docs/docx.jar!/"
ns1:main()
xmlns:ns2="java?path=jar:file:///c:/projects/docs/docx.jar!/"
ns2:docx.layout.pages.main()
Here is a complete XSLT example that uses a JAR file to call a Java extension function:
<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:fn="http://www.w3.org/2005/xpath-functions"
xmlns:car="java?path=jar:file:///C:/test/Car1.jar!/" >
<xsl:output exclude-result-prefixes="fn car xsl xs"/>
<xsl:template match="/">
<xsl:variable name="myCar" select="car:Car1.new('red')" />
<a><xsl:value-of select="car:Car1.getCarColor($myCar)"/></a>
</xsl:template>
<xsl:template match="car"/>
</xsl:stylesheet>
Note: | When a path is supplied via the extension function, the path is added to the ClassLoader. |