package net.sf.saxon.exslt;
import net.sf.saxon.expr.XPathContext;
import net.sf.saxon.pattern.AnyNodeTest;
import net.sf.saxon.type.BuiltInAtomicType;
import net.sf.saxon.type.ItemType;
import net.sf.saxon.type.TypeHierarchy;
import net.sf.saxon.value.Value;
/**
* This class implements extension functions in the
* http://exslt.org/common namespace. <p>
*/
public abstract class Common {
/**
* Class is not instantiated
*/
private Common() {
}
/**
* Convert a result tree fragment to a node-set. This is a hangover from XSLT 1.0;
* it is implemented as a no-op.
*/
public static Value nodeSet(Value frag) {
return frag;
}
/**
* Return the type of the supplied value: "sequence", "string", "number", "boolean",
* "external". (EXSLT spec not yet modified to cater for XPath 2.0 data model)
*/
public static String objectType(XPathContext context, Value value) {
final TypeHierarchy th = context.getConfiguration().getTypeHierarchy();
ItemType type = value.getItemType(th);
if (th.isSubType(type, AnyNodeTest.getInstance())) {
return "node-set";
} else if (th.isSubType(type, BuiltInAtomicType.STRING)) {
return "string";
} else if (th.isSubType(type, BuiltInAtomicType.NUMERIC)) {
return "number";
} else if (th.isSubType(type, BuiltInAtomicType.BOOLEAN)) {
return "boolean";
} else {
return type.toString(context.getNamePool());
}
}
}
//
// The contents of this file are subject to the Mozilla Public License Version 1.0 (the "License");
// you may not use this file except in compliance with the License. You may obtain a copy of the
// License at http://www.mozilla.org/MPL/
//
// Software distributed under the License is distributed on an "AS IS" basis,
// WITHOUT WARRANTY OF ANY KIND, either express or implied.
// See the License for the specific language governing rights and limitations under the License.
//
// The Original Code is: all this file.
//
// The Initial Developer of the Original Code is Michael H. Kay.
//
// Portions created by (your name) are Copyright (C) (your legal entity). All Rights Reserved.
//
// Contributor(s): none.
//