| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 468655 2006-10-28 07:12:06Z minchau $ |
| */ |
| package org.apache.xpath.functions; |
| |
| import org.apache.xml.dtm.DTM; |
| import org.apache.xpath.XPathContext; |
| import org.apache.xpath.objects.XObject; |
| import org.apache.xpath.objects.XString; |
| |
| /** |
| * Execute the Namespace() function. |
| * @xsl.usage advanced |
| */ |
| public class FuncNamespace extends FunctionDef1Arg |
| { |
| static final long serialVersionUID = -4695674566722321237L; |
| |
| /** |
| * 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)); |
| } |
| } |