diff options
Diffstat (limited to 'tags/java/sca/2.0-M3-RC5/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/TuscanyXMLStreamReader.java')
| -rw-r--r-- | tags/java/sca/2.0-M3-RC5/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/TuscanyXMLStreamReader.java | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/tags/java/sca/2.0-M3-RC5/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/TuscanyXMLStreamReader.java b/tags/java/sca/2.0-M3-RC5/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/TuscanyXMLStreamReader.java new file mode 100644 index 0000000000..3352e76a0d --- /dev/null +++ b/tags/java/sca/2.0-M3-RC5/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/TuscanyXMLStreamReader.java @@ -0,0 +1,110 @@ +/* + * 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.tuscany.sca.contribution.processor; + +import java.util.ArrayList; +import java.util.List; +import java.util.Stack; + +import javax.xml.XMLConstants; +import javax.xml.namespace.NamespaceContext; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; +import javax.xml.stream.util.StreamReaderDelegate; + +/* + * Custom implementaion of the XMLStreamReader to keep track of the namespace context for each element + */ +public class TuscanyXMLStreamReader extends StreamReaderDelegate implements XMLStreamReader { + + Stack<List<String>[]> context = new Stack<List<String>[]>(); + + List<String>[] contextList; + List<String> prefixList; + List<String> uriList; + + public TuscanyXMLStreamReader(XMLStreamReader reader) { + super(reader); + } + + public void pushContext() throws XMLStreamException { + contextList = new List[2]; + prefixList = new ArrayList<String>(); + uriList = new ArrayList<String>(); + int namespaceCount = this.getNamespaceCount(); + for (int i = 0; i < namespaceCount; i++) { + prefixList.add(checkString(this.getNamespacePrefix(i))); + uriList.add(this.getNamespaceURI(i)); + } + contextList[0] = prefixList; + contextList[1] = uriList; + context.push(contextList); + } + + private String checkString(String namespacePrefix) { + if (namespacePrefix == null) { + return XMLConstants.DEFAULT_NS_PREFIX; + } else { + return namespacePrefix; + } + } + + public void popContext() throws XMLStreamException { + context.pop(); + } + + /* + * Overriding the next() method to perform PUSH and POP operations + * for the NamespaceContext for the current element + */ + + @Override + public int next() throws XMLStreamException { + // POP the context if the element ends + if (this.getEventType() == END_ELEMENT) { + popContext(); + } + + //get the next event + int nextEvent = super.next(); + //PUSH the events info onto the Stack + if (nextEvent == START_ELEMENT) { + pushContext(); + } + return nextEvent; + } + + @Override + public int nextTag() throws XMLStreamException { + int event = super.nextTag(); + if (event == START_ELEMENT) { + pushContext(); + } + if (event == END_ELEMENT) { + popContext(); + } + return event; + } + + @Override + public NamespaceContext getNamespaceContext() { + return new TuscanyNamespaceContext((Stack<List<String>[]>)context.clone()); + } +}
\ No newline at end of file |