1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 /* 19 * $Id: XUnresolvedVariableSimple.java 468643 2006-10-28 06:56:03Z minchau $ 20 */ 21 package org.apache.xalan.templates; 22 23 import org.apache.xpath.Expression; 24 import org.apache.xpath.XPathContext; 25 import org.apache.xpath.objects.XObject; 26 27 28 /** 29 * This is the same as XUnresolvedVariable, but it assumes that the 30 * context is already set up. For use with psuedo variables. 31 * Also, it holds an Expression object, instead of an ElemVariable. 32 * It must only hold static context, since a single copy will be 33 * held in the template. 34 */ 35 public class XUnresolvedVariableSimple extends XObject 36 { 37 static final long serialVersionUID = -1224413807443958985L; XUnresolvedVariableSimple(ElemVariable obj)38 public XUnresolvedVariableSimple(ElemVariable obj) 39 { 40 super(obj); 41 } 42 43 44 /** 45 * For support of literal objects in xpaths. 46 * 47 * @param xctxt The XPath execution context. 48 * 49 * @return This object. 50 * 51 * @throws javax.xml.transform.TransformerException 52 */ execute(XPathContext xctxt)53 public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException 54 { 55 Expression expr = ((ElemVariable)m_obj).getSelect().getExpression(); 56 XObject xobj = expr.execute(xctxt); 57 xobj.allowDetachToRelease(false); 58 return xobj; 59 } 60 61 /** 62 * Tell what kind of class this is. 63 * 64 * @return CLASS_UNRESOLVEDVARIABLE 65 */ getType()66 public int getType() 67 { 68 return CLASS_UNRESOLVEDVARIABLE; 69 } 70 71 /** 72 * Given a request type, return the equivalent string. 73 * For diagnostic purposes. 74 * 75 * @return An informational string. 76 */ getTypeString()77 public String getTypeString() 78 { 79 return "XUnresolvedVariableSimple (" + object().getClass().getName() + ")"; 80 } 81 82 83 } 84 85