Author: rfeng
Date: Fri May 15 20:45:55 2009
New Revision: 775325
URL: http://svn.apache.org/viewvc?rev=775325&view=rev
Log:
Add the processor to read the node configuration in the ATOM format
Added:
tuscany/java/sca/modules/node-impl/src/main/java/org/apache/tuscany/sca/node/configuration/xml/NodeConfigurationATOMProcessor.java
Added:
tuscany/java/sca/modules/node-impl/src/main/java/org/apache/tuscany/sca/node/configuration/xml/NodeConfigurationATOMProcessor.java
URL:
http://svn.apache.org/viewvc/tuscany/java/sca/modules/node-impl/src/main/java/org/apache/tuscany/sca/node/configuration/xml/NodeConfigurationATOMProcessor.java?rev=775325&view=auto
==============================================================================
---
tuscany/java/sca/modules/node-impl/src/main/java/org/apache/tuscany/sca/node/configuration/xml/NodeConfigurationATOMProcessor.java
(added)
+++
tuscany/java/sca/modules/node-impl/src/main/java/org/apache/tuscany/sca/node/configuration/xml/NodeConfigurationATOMProcessor.java
Fri May 15 20:45:55 2009
@@ -0,0 +1,160 @@
+/*
+ * 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.node.configuration.xml;
+
+import static javax.xml.stream.XMLStreamConstants.END_ELEMENT;
+import static javax.xml.stream.XMLStreamConstants.START_ELEMENT;
+
+import javax.xml.namespace.QName;
+import javax.xml.stream.XMLStreamConstants;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+import javax.xml.stream.XMLStreamWriter;
+
+import org.apache.tuscany.sca.contribution.processor.BaseStAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.processor.ContributionReadException;
+import
org.apache.tuscany.sca.contribution.processor.ContributionResolveException;
+import
org.apache.tuscany.sca.contribution.processor.ContributionWriteException;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.core.FactoryExtensionPoint;
+import org.apache.tuscany.sca.monitor.Monitor;
+import org.apache.tuscany.sca.node.configuration.ContributionConfiguration;
+import org.apache.tuscany.sca.node.configuration.NodeConfiguration;
+import org.apache.tuscany.sca.node.configuration.NodeConfigurationFactory;
+
+/**
+ * Implements a StAX artifact processor for configured node implementations.
+ *
+ * @version $Rev: 704156 $ $Date: 2008-10-13 09:31:59 -0700 (Mon, 13 Oct 2008)
$
+ */
+public class NodeConfigurationATOMProcessor extends BaseStAXArtifactProcessor
implements
+ StAXArtifactProcessor<NodeConfiguration> {
+
+ private static final String ATOM_NS = "http://www.w3.org/2005/Atom";;
+ private static final QName FEED_QNAME = new QName(ATOM_NS, "feed");
+ private static final QName ENTRY_QNAME = new QName(ATOM_NS, "entry");
+ private static final QName ID_QNAME = new QName(ATOM_NS, "id");
+ private static final QName LINK_QNAME = new QName(ATOM_NS, "link");
+ private static final QName CONTENT_QNAME = new QName(ATOM_NS, "content");
+ private static final String HREF = "href";
+
+ private NodeConfigurationFactory factory;
+
+ public NodeConfigurationATOMProcessor(FactoryExtensionPoint
modelFactories, Monitor monitor) {
+ this.factory =
modelFactories.getFactory(NodeConfigurationFactory.class);
+ }
+
+ public QName getArtifactType() {
+ return null;
+ }
+
+ public Class<NodeConfiguration> getModelType() {
+ // Returns the type of model processed by this processor
+ return NodeConfiguration.class;
+ }
+
+ public NodeConfiguration read(XMLStreamReader reader) throws
ContributionReadException, XMLStreamException {
+
+ NodeConfiguration config = factory.createNodeConfiguration();
+
+ // Read a feed containing links to the composite and the contributions
assigned to
+ // the node
+ ContributionConfiguration contribution = null;
+ boolean id = false;
+ QName name = null;
+
+ while (reader.hasNext()) {
+ int event = reader.getEventType();
+ switch (event) {
+
+ case START_ELEMENT:
+ name = reader.getName();
+
+ if (ENTRY_QNAME.equals(name)) {
+
+ // Read an <entry>
+ contribution =
factory.createContributionConfiguration();
+ } else if (ID_QNAME.equals(name)) {
+
+ // Read an <id>
+ id = true;
+
+ } else if (LINK_QNAME.equals(name)) {
+
+ // Read a <link>
+ String href = getString(reader, HREF);
+
+ if (contribution != null) {
+ contribution.setLocation(href);
+ }
+ } else if (CONTENT_QNAME.equals(name)) {
+ // Read a <content>
+ } else if (FEED_QNAME.equals(name)) {
+ // Read a <feed>
+ }
+ break;
+
+ case XMLStreamConstants.CHARACTERS:
+
+ // Read characters inside an <id> element
+ if (id) {
+ if (contribution != null) {
+ contribution.setURI(reader.getText());
+ }
+ }
+ break;
+
+ case END_ELEMENT:
+ name = reader.getName();
+
+ // Clear current state when reading reaching end element
+ if (ENTRY_QNAME.equals(name)) {
+ if (contribution != null) {
+ config.getContributions().add(contribution);
+ }
+
+ contribution = null;
+
+ } else if (ID_QNAME.equals(name)) {
+ id = false;
+
+ } else if (FEED_QNAME.equals(name)) {
+
+ // We've reached the end of the feed
+ return config;
+ }
+ break;
+ }
+
+ // Read the next element
+ if (reader.hasNext()) {
+ reader.next();
+ }
+ }
+ return config;
+ }
+
+ public void resolve(NodeConfiguration implementation, ModelResolver
resolver) throws ContributionResolveException {
+ }
+
+ public void write(NodeConfiguration implementation, XMLStreamWriter
writer) throws ContributionWriteException,
+ XMLStreamException {
+ }
+}
