| /* |
| * 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: JAXPVariableStack.java 524815 2007-04-02 15:52:15Z zongaro $ |
| |
| package org.apache.xpath.jaxp; |
| |
| import javax.xml.transform.TransformerException; |
| import javax.xml.xpath.XPathVariableResolver; |
| |
| import org.apache.xml.utils.QName; |
| import org.apache.xpath.VariableStack; |
| import org.apache.xpath.XPathContext; |
| import org.apache.xpath.objects.XObject; |
| |
| import org.apache.xpath.res.XPATHErrorResources; |
| import org.apache.xalan.res.XSLMessages; |
| |
| |
| /** |
| * Overrides {@link VariableStack} and delegates the call to |
| * {@link javax.xml.xpath.XPathVariableResolver}. |
| * |
| * @author Ramesh Mandava ( ramesh.mandava@sun.com ) |
| */ |
| public class JAXPVariableStack extends VariableStack { |
| |
| private final XPathVariableResolver resolver; |
| |
| public JAXPVariableStack(XPathVariableResolver resolver) { |
| super(2); |
| this.resolver = resolver; |
| } |
| |
| public XObject getVariableOrParam(XPathContext xctxt, QName qname) |
| throws TransformerException,IllegalArgumentException { |
| if ( qname == null ) { |
| //JAXP 1.3 spec says that if variable name is null then |
| // we need to through IllegalArgumentException |
| String fmsg = XSLMessages.createXPATHMessage( |
| XPATHErrorResources.ER_ARG_CANNOT_BE_NULL, |
| new Object[] {"Variable qname"} ); |
| throw new IllegalArgumentException( fmsg ); |
| } |
| javax.xml.namespace.QName name = |
| new javax.xml.namespace.QName( |
| qname.getNamespace(), |
| qname.getLocalPart()); |
| Object varValue = resolver.resolveVariable( name ); |
| if ( varValue == null ) { |
| String fmsg = XSLMessages.createXPATHMessage( |
| XPATHErrorResources.ER_RESOLVE_VARIABLE_RETURNS_NULL, |
| new Object[] { name.toString()} ); |
| throw new TransformerException( fmsg ); |
| } |
| return XObject.create( varValue, xctxt ); |
| } |
| |
| } |