1 /* 2 * reserved comment block 3 * DO NOT REMOVE OR ALTER! 4 */ 5 /* 6 * Licensed to the Apache Software Foundation (ASF) under one or more 7 * contributor license agreements. See the NOTICE file distributed with 8 * this work for additional information regarding copyright ownership. 9 * The ASF licenses this file to You under the Apache License, Version 2.0 10 * (the "License"); you may not use this file except in compliance with 11 * the License. You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, 17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 */ 21 22 package com.sun.org.apache.xpath.internal.jaxp; 23 24 import javax.xml.transform.TransformerException; 25 import javax.xml.xpath.XPathVariableResolver; 26 27 import com.sun.org.apache.xml.internal.utils.QName; 28 import com.sun.org.apache.xpath.internal.VariableStack; 29 import com.sun.org.apache.xpath.internal.XPathContext; 30 import com.sun.org.apache.xpath.internal.objects.XObject; 31 32 import com.sun.org.apache.xpath.internal.res.XPATHErrorResources; 33 import com.sun.org.apache.xalan.internal.res.XSLMessages; 34 35 36 /** 37 * Overrides {@link VariableStack} and delegates the call to 38 * {@link javax.xml.xpath.XPathVariableResolver}. 39 * 40 * @author Ramesh Mandava ( ramesh.mandava@sun.com ) 41 */ 42 public class JAXPVariableStack extends VariableStack { 43 44 private final XPathVariableResolver resolver; 45 46 public JAXPVariableStack(XPathVariableResolver resolver) { 47 this.resolver = resolver; 48 } 49 50 public XObject getVariableOrParam(XPathContext xctxt, QName qname) 51 throws TransformerException,IllegalArgumentException { 52 if ( qname == null ) { 53 //JAXP 1.3 spec says that if variable name is null then 54 // we need to through IllegalArgumentException 55 String fmsg = XSLMessages.createXPATHMessage( 56 XPATHErrorResources.ER_ARG_CANNOT_BE_NULL, 57 new Object[] {"Variable qname"} ); 58 throw new IllegalArgumentException( fmsg ); 59 } 60 javax.xml.namespace.QName name = 61 new javax.xml.namespace.QName( 62 qname.getNamespace(), 63 qname.getLocalPart()); 64 Object varValue = resolver.resolveVariable( name ); 65 if ( varValue == null ) { 66 String fmsg = XSLMessages.createXPATHMessage( 67 XPATHErrorResources.ER_RESOLVE_VARIABLE_RETURNS_NULL, 68 new Object[] { name.toString()} ); 69 throw new TransformerException( fmsg ); 70 } 71 return XObject.create( varValue, xctxt ); 72 } 73 74 }