- /*
- * Copyright 1999-2004 The Apache Software Foundation.
- *
- * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- /*
- * $Id: FuncNamespace.java,v 1.10 2004/02/17 04:34:01 minchau Exp $
- */
- package com.sun.org.apache.xpath.internal.functions;
-
- import com.sun.org.apache.xml.internal.dtm.DTM;
- import com.sun.org.apache.xpath.internal.XPathContext;
- import com.sun.org.apache.xpath.internal.objects.XObject;
- import com.sun.org.apache.xpath.internal.objects.XString;
-
- /**
- * Execute the Namespace() function.
- * @xsl.usage advanced
- */
- public class FuncNamespace extends FunctionDef1Arg
- {
-
- /**
- * Execute the function. The function must return
- * a valid object.
- * @param xctxt The current execution context.
- * @return A valid XObject.
- *
- * @throws javax.xml.transform.TransformerException
- */
- public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
- {
-
- int context = getArg0AsNode(xctxt);
-
- String s;
- if(context != DTM.NULL)
- {
- DTM dtm = xctxt.getDTM(context);
- int t = dtm.getNodeType(context);
- if(t == DTM.ELEMENT_NODE)
- {
- s = dtm.getNamespaceURI(context);
- }
- else if(t == DTM.ATTRIBUTE_NODE)
- {
-
- // This function always returns an empty string for namespace nodes.
- // We check for those here. Fix inspired by Davanum Srinivas.
-
- s = dtm.getNodeName(context);
- if(s.startsWith("xmlns:") || s.equals("xmlns"))
- return XString.EMPTYSTRING;
-
- s = dtm.getNamespaceURI(context);
- }
- else
- return XString.EMPTYSTRING;
- }
- else
- return XString.EMPTYSTRING;
-
- return ((null == s) ? XString.EMPTYSTRING : new XString(s));
- }
- }