I'm stumped and would very much appreciate another pair of eyeballs taking a look. I'm using saxonpe-9.4.0.9 with a license in an XSLT in XQuery in eXist-db 2.2.RC2. It has worked but now is not, and I haven't changed the java extension. I'm getting the following error which appears to indicate that saxonpe is being used and that apparently the extension class is found but the toUnicode() function is not found:

======== 2015-01-20 15:56:00,139 [http-nio-51173-exec-1] WARN (Transform.java [fatalError]:816) - XSL transform reports fatal error: Cannot find a matching 0-argument function named {java:org.tbrc.saxon.Convert}toUnicode(). The namespace URI and local name are recognized, but the number of arguments is wrong ; Line#: -1; Column#: -1 net.sf.saxon.trans.XPathException: Cannot find a matching 0-argument function named {java:org.tbrc.saxon.Convert}toUnicode(). The namespace URI and local name are recognized, but the number of arguments is wrong at net.sf.saxon.expr.ErrorExpression.evaluateItem(ErrorExpression.java:66) at net.sf.saxon.expr.ErrorExpression.iterate(ErrorExpression.java:80) at net.sf.saxon.expr.Atomizer.iterate(Atomizer.java:230) at net.sf.saxon.expr.FirstItemExpression.evaluateItem(FirstItemExpression.java:55) at net.sf.saxon.expr.AtomicSequenceConverter.evaluateItem(AtomicSequenceConverter.java:325) at net.sf.saxon.expr.Expression.evaluateAsString(Expression.java:505) at net.sf.saxon.expr.instruct.SimpleNodeConstructor.processLeavingTail(SimpleNodeConstructor.java:194) at net.sf.saxon.expr.instruct.ValueOf.processLeavingTail(ValueOf.java:245) at net.sf.saxon.expr.instruct.Block.processLeavingTail(Block.java:615) . . .

The XSLT in XQuery looks like:

======== declare function local:w2u($w as element()?) as element()* { let $xslt := <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:wu="java:org.tbrc.saxon.Convert" xmlns:w="http://www.tbrc.org/models/work#" version="1.0"> <xsl:template match="w:title[@encoding='extendedWylie' or not(@encoding)]"> xsl:copy <xsl:apply-templates select="@[not(encoding)]"/> <xsl:attribute name="encoding">native</xsl:attribute> <xsl:value-of select="wu:toUnicode()"/> </xsl:copy> </xsl:template> <xsl:template match="w:creator|w:subject"> xsl:copy <xsl:apply-templates select="@"/> <xsl:value-of select="wu:toUnicode()"/> </xsl:copy> </xsl:template> <xsl:template match="@|node()"> xsl:copy <xsl:apply-templates select="@|node()"/> </xsl:copy> </xsl:template> </xsl:stylesheet> return transform:transform($w, $xslt, ()) };

The java extension itself is:

======== package org.tbrc.saxon;

import net.sf.saxon.expr.XPathContext; import net.sf.saxon.om.Item; import org.tbrc.common.shared.Converter;

public class Convert {

private static Converter converter = new Converter(true, true, true, false);

public static String toUnicode(XPathContext c) {
    
    Item item = c.getContextItem();
    if (item == null) {
    	return "";
    }
    // convert to Extended Wylie to Unicode
    String val = converter.toUnicode(item.getStringValue());

    if (val == null) {
        return "";
    }
    
    return val;
}

public static String toWylie(XPathContext c) {
    
    Item item = c.getContextItem();
    if (item == null) {
    	return "";
    }
    // convert to Extended Wylie to Unicode
    String val = converter.toWylie(item.getStringValue());

    if (val == null) {
        return "";
    }
    
    return val;
}

}¶

Thank you, Chris