| /* |
| * 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. |
| */ |
| |
| package org.apache.axiom.util.stax.dialect; |
| |
| import javax.xml.namespace.NamespaceContext; |
| import javax.xml.stream.XMLStreamException; |
| import javax.xml.stream.XMLStreamReader; |
| |
| import org.apache.axiom.ext.stax.DelegatingXMLStreamReader; |
| import org.apache.axiom.util.namespace.ScopedNamespaceContext; |
| import org.apache.axiom.util.stax.wrapper.XMLStreamReaderWrapper; |
| |
| /** |
| * {@link XMLStreamReader} wrapper that tracks the namespace bindings on behalf of the underlying |
| * reader. This class may be used to wrap {@link XMLStreamReader} instances known to have issues in |
| * their namespace context implementation. It tracks the namespace bindings using the |
| * {@link XMLStreamReader#getNamespacePrefix(int)} and {@link XMLStreamReader#getNamespaceURI(int)} |
| * methods and exposes this information by overriding the |
| * {@link XMLStreamReader#getNamespaceContext()} and {@link XMLStreamReader#getNamespaceURI(String)} |
| * methods. Invocations of these two methods will therefore never reach the underlying reader. |
| */ |
| class NamespaceContextCorrectingXMLStreamReaderWrapper extends XMLStreamReaderWrapper implements DelegatingXMLStreamReader { |
| private final ScopedNamespaceContext namespaceContext = new ScopedNamespaceContext(); |
| |
| /** |
| * Constructor. |
| * |
| * @param parent the parent reader |
| */ |
| public NamespaceContextCorrectingXMLStreamReaderWrapper(XMLStreamReader parent) { |
| super(parent); |
| } |
| |
| private void startElement() { |
| namespaceContext.startScope(); |
| for (int i=0, c=getNamespaceCount(); i<c; i++) { |
| String prefix = getNamespacePrefix(i); |
| namespaceContext.setPrefix(prefix == null ? "" : prefix, getNamespaceURI(i)); |
| } |
| } |
| |
| public int next() throws XMLStreamException { |
| if (isEndElement()) { |
| namespaceContext.endScope(); |
| } |
| int event = super.next(); |
| if (event == START_ELEMENT) { |
| startElement(); |
| } |
| return event; |
| } |
| |
| public int nextTag() throws XMLStreamException { |
| if (isEndElement()) { |
| namespaceContext.endScope(); |
| } |
| int event = super.nextTag(); |
| if (event == START_ELEMENT) { |
| startElement(); |
| } |
| return event; |
| } |
| |
| public NamespaceContext getNamespaceContext() { |
| return namespaceContext; |
| } |
| |
| public String getNamespaceURI(String prefix) { |
| return namespaceContext.getNamespaceURI(prefix); |
| } |
| |
| public XMLStreamReader getParent() { |
| return super.getParent(); |
| } |
| } |