From b478631a5bc3a7a01d3b62aa90138a331d858b0e Mon Sep 17 00:00:00 2001 From: rfeng Date: Fri, 15 May 2009 20:45:55 +0000 Subject: Add the processor to read the node configuration in the ATOM format git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@775325 13f79535-47bb-0310-9956-ffa450edef68 --- .../xml/NodeConfigurationATOMProcessor.java | 160 +++++++++++++++++++++ 1 file changed, 160 insertions(+) create mode 100644 java/sca/modules/node-impl/src/main/java/org/apache/tuscany/sca/node/configuration/xml/NodeConfigurationATOMProcessor.java (limited to 'java') diff --git a/java/sca/modules/node-impl/src/main/java/org/apache/tuscany/sca/node/configuration/xml/NodeConfigurationATOMProcessor.java b/java/sca/modules/node-impl/src/main/java/org/apache/tuscany/sca/node/configuration/xml/NodeConfigurationATOMProcessor.java new file mode 100644 index 0000000000..d3d0c5d077 --- /dev/null +++ b/java/sca/modules/node-impl/src/main/java/org/apache/tuscany/sca/node/configuration/xml/NodeConfigurationATOMProcessor.java @@ -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 { + + 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 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 + contribution = factory.createContributionConfiguration(); + } else if (ID_QNAME.equals(name)) { + + // Read an + id = true; + + } else if (LINK_QNAME.equals(name)) { + + // Read a + String href = getString(reader, HREF); + + if (contribution != null) { + contribution.setLocation(href); + } + } else if (CONTENT_QNAME.equals(name)) { + // Read a + } else if (FEED_QNAME.equals(name)) { + // Read a + } + break; + + case XMLStreamConstants.CHARACTERS: + + // Read characters inside an 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 { + } +} -- cgit v1.2.3