diff options
Diffstat (limited to 'sandbox/old/contrib/topology-xml/src/main/java/org/apache/tuscany/sca/topology/xml/TopologyProcessor.java')
| -rw-r--r-- | sandbox/old/contrib/topology-xml/src/main/java/org/apache/tuscany/sca/topology/xml/TopologyProcessor.java | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/sandbox/old/contrib/topology-xml/src/main/java/org/apache/tuscany/sca/topology/xml/TopologyProcessor.java b/sandbox/old/contrib/topology-xml/src/main/java/org/apache/tuscany/sca/topology/xml/TopologyProcessor.java new file mode 100644 index 0000000000..25f62bf4c4 --- /dev/null +++ b/sandbox/old/contrib/topology-xml/src/main/java/org/apache/tuscany/sca/topology/xml/TopologyProcessor.java @@ -0,0 +1,176 @@ +/* + * 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.topology.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.XMLStreamException; +import javax.xml.stream.XMLStreamReader; +import javax.xml.stream.XMLStreamWriter; + +import org.apache.tuscany.sca.assembly.AssemblyFactory; +import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.contribution.service.ContributionReadException; +import org.apache.tuscany.sca.contribution.service.ContributionResolveException; +import org.apache.tuscany.sca.contribution.service.ContributionWriteException; +import org.apache.tuscany.sca.topology.Node; +import org.apache.tuscany.sca.topology.Runtime; +import org.apache.tuscany.sca.topology.Scheme; +import org.apache.tuscany.sca.topology.Component; +import org.apache.tuscany.sca.topology.TopologyFactory; + +/** + * A composite processor. + * + * @version $Rev$ $Date$ + */ +public class TopologyProcessor extends BaseTopologyArtifactProcessor implements StAXArtifactProcessor<Runtime> { + + /** + * Construct a new composite processor + * @param assemblyFactory + * @param policyFactory + * @param extensionProcessor + */ + public TopologyProcessor(TopologyFactory topologyFactory, + AssemblyFactory assemblyFactory, + StAXArtifactProcessor extensionProcessor) { + super(topologyFactory, assemblyFactory, extensionProcessor); + } + + public Runtime read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException { + QName name = null; + Runtime runtime = null; + Node node = null; + String domainName = DEFAULT_DOMAIN; + + // Read the composite document + while (reader.hasNext()) { + int event = reader.getEventType(); + switch (event) { + case START_ELEMENT: + name = reader.getName(); + + if (RUNTIME_QNAME.equals(name)) { + // Read a <runtime> + runtime = topologyFactory.createRuntime(); + } else if (NODE_QNAME.equals(name)) { + // Read a <node> + node = topologyFactory.createNode(); + node.setName(getString(reader, NAME)); + + // add node to runtime + runtime.getNodes().add(node); + + // reset domain name to the default + domainName = DEFAULT_DOMAIN; + } else if (DOMAIN_QNAME.equals(name)) { + // Read a <domain> + domainName = getString(reader, NAME); + } else if (SCHEME_QNAME.equals(name)) { + // Read a <scheme> + Scheme scheme = topologyFactory.createScheme(); + scheme.setName(getString(reader, NAME)); + scheme.setBaseURL(getString(reader, BASE_URL)); + + scheme.setDomainName(domainName); + + // Add scheme to the node + node.getSchemes(domainName).add(scheme); + } else if (COMPONENT_QNAME.equals(name)) { + // Read a <component> + Component component = topologyFactory.createComponent(); + component.setName(getString(reader, NAME)); + + component.setDomainName(domainName); + + // Add scheme to the node + node.getComponents(domainName).add(component); + + } else { + + // Read an extension element + Object extension = extensionProcessor.read(reader); + + if (extension != null) { + // no extensions are supported + } + } + + case END_ELEMENT: + name = reader.getName(); + // Clear current state when reading reaching end element + } + + if (reader.hasNext()) { + reader.next(); + } + } + return runtime; + } + + + public void write(Runtime runtime, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException { + + writeStartDocument(writer, RUNTIME); + + // TODO - write out the scheme definitions + + for (Node node : runtime.getNodes()) { + writeStart(writer, NODE, new XAttr(NAME, node.getName())); + + for (String domainName : node.getDomainNames()) { + + writeStart(writer, DOMAIN, new XAttr(NAME, domainName)); + + for (Scheme scheme: node.getSchemes(domainName)) { + writeStart(writer, SCHEME, new XAttr(NAME, scheme.getName()), new XAttr(BASE_URL, scheme.getBaseURL())); + writeEnd(writer); + } + + for (Component component: node.getComponents(domainName)) { + writeStart(writer, COMPONENT, new XAttr(NAME, component.getName())); + writeEnd(writer); + } + + writeEnd(writer); + } + + writeEnd(writer); + } + + writeEndDocument(writer); + } + + public void resolve(Runtime runtime, ModelResolver resolver) throws ContributionResolveException { + // no resolution steps defined + } + + public QName getArtifactType() { + return RUNTIME_QNAME; + } + + public Class<Runtime> getModelType() { + return Runtime.class; + } +} |