| /** |
| * Licensed to jclouds, Inc. (jclouds) under one or more |
| * contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. jclouds 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.jclouds.ovf.xml.internal; |
| |
| import static org.jclouds.util.SaxUtils.equalsOrSuffix; |
| |
| import java.util.Map; |
| |
| import javax.inject.Named; |
| import javax.inject.Provider; |
| |
| import org.jclouds.http.functions.ParseSax; |
| import org.jclouds.ovf.internal.BaseEnvelope; |
| import org.jclouds.ovf.internal.BaseVirtualSystem; |
| import org.jclouds.ovf.xml.DiskSectionHandler; |
| import org.jclouds.ovf.xml.NetworkSectionHandler; |
| import org.jclouds.ovf.xml.SectionHandler; |
| import org.jclouds.util.SaxUtils; |
| import org.xml.sax.Attributes; |
| import org.xml.sax.SAXException; |
| |
| import com.google.common.collect.ImmutableMap; |
| import com.google.inject.Inject; |
| |
| /** |
| * @author Adrian Cole |
| */ |
| public class BaseEnvelopeHandler<V extends BaseVirtualSystem<V>, B extends BaseVirtualSystem.Builder<V>, H extends BaseVirtualSystemHandler<V, B>, E extends BaseEnvelope<V, E>, T extends BaseEnvelope.Builder<V, E>> |
| extends ParseSax.HandlerWithResult<E> { |
| |
| public E getResult() { |
| try { |
| return builder.build(); |
| } finally { |
| builder = envelopeBuilderProvider.get(); |
| } |
| } |
| |
| protected final H virtualSystemHandler; |
| protected final DiskSectionHandler diskHandler; |
| protected final NetworkSectionHandler networkHandler; |
| protected final Provider<T> envelopeBuilderProvider; |
| protected T builder; |
| |
| @Inject |
| public BaseEnvelopeHandler(DiskSectionHandler diskHandler, NetworkSectionHandler networkHandler, |
| H virtualSystemHandler, Provider<T> envelopeBuilderProvider) { |
| this.virtualSystemHandler = virtualSystemHandler; |
| this.diskHandler = diskHandler; |
| this.networkHandler = networkHandler; |
| this.envelopeBuilderProvider = envelopeBuilderProvider; |
| this.builder = envelopeBuilderProvider.get(); |
| } |
| |
| @SuppressWarnings("unchecked") |
| protected SectionHandler defaultSectionHandler = SectionHandler.create(); |
| |
| @SuppressWarnings("unchecked") |
| @Inject(optional = true) |
| @Named("Envelope") |
| Map<String, Provider<? extends SectionHandler>> extensionHandlers = ImmutableMap |
| .<String, Provider<? extends SectionHandler>> of(); |
| |
| @SuppressWarnings("unchecked") |
| protected SectionHandler extensionHandler; |
| |
| protected boolean inDisk; |
| protected boolean inNetwork; |
| protected boolean inVirtualSystem; |
| protected boolean inSection; |
| protected boolean inExtensionSection; |
| |
| protected int depth = 0; |
| |
| public void startElement(String uri, String localName, String qName, Attributes attrs) throws SAXException { |
| Map<String, String> attributes = SaxUtils.cleanseAttributes(attrs); |
| depth++; |
| if (depth == 2) { |
| if (equalsOrSuffix(qName, "DiskSection")) { |
| inDisk = true; |
| } else if (equalsOrSuffix(qName, "NetworkSection")) { |
| inNetwork = true; |
| } else if (equalsOrSuffix(qName, "VirtualSystem")) { |
| inVirtualSystem = true; |
| } else if (extensionHandlers.containsKey(qName) || attributes.containsKey("type") |
| && extensionHandlers.containsKey(attributes.get("type"))) { |
| inExtensionSection = true; |
| extensionHandler = extensionHandlers.get(qName).get(); |
| } else if (qName.endsWith("Section")) { |
| inSection = true; |
| } |
| } |
| |
| if (inDisk) { |
| diskHandler.startElement(uri, localName, qName, attrs); |
| } else if (inNetwork) { |
| networkHandler.startElement(uri, localName, qName, attrs); |
| } else if (inVirtualSystem) { |
| virtualSystemHandler.startElement(uri, localName, qName, attrs); |
| } else if (inExtensionSection) { |
| extensionHandler.startElement(uri, localName, qName, attrs); |
| } else if (inSection) { |
| defaultSectionHandler.startElement(uri, localName, qName, attrs); |
| } |
| |
| } |
| |
| @Override |
| public void endElement(String uri, String localName, String qName) { |
| depth--; |
| if (depth == 1) { |
| if (equalsOrSuffix(qName, "DiskSection")) { |
| inDisk = false; |
| builder.diskSection(diskHandler.getResult()); |
| } else if (equalsOrSuffix(qName, "NetworkSection")) { |
| inNetwork = false; |
| builder.networkSection(networkHandler.getResult()); |
| } else if (equalsOrSuffix(qName, "VirtualSystem")) { |
| inVirtualSystem = false; |
| builder.virtualSystem(virtualSystemHandler.getResult()); |
| } else if (extensionHandlers.containsKey(qName)) { |
| builder.additionalSection(qName, extensionHandler.getResult()); |
| inExtensionSection = false; |
| } else if (qName.endsWith("Section")) { |
| builder.additionalSection(qName, defaultSectionHandler.getResult()); |
| inSection = false; |
| } |
| } |
| |
| if (inDisk) { |
| diskHandler.endElement(uri, localName, qName); |
| } else if (inNetwork) { |
| networkHandler.endElement(uri, localName, qName); |
| } else if (inVirtualSystem) { |
| virtualSystemHandler.endElement(uri, localName, qName); |
| } else if (inExtensionSection) { |
| extensionHandler.endElement(uri, localName, qName); |
| } else if (inSection) { |
| defaultSectionHandler.endElement(uri, localName, qName); |
| } |
| } |
| |
| @Override |
| public void characters(char ch[], int start, int length) { |
| if (inDisk) { |
| diskHandler.characters(ch, start, length); |
| } else if (inNetwork) { |
| networkHandler.characters(ch, start, length); |
| } else if (inVirtualSystem) { |
| virtualSystemHandler.characters(ch, start, length); |
| } else if (inExtensionSection) { |
| extensionHandler.characters(ch, start, length); |
| } else if (inSection) { |
| defaultSectionHandler.characters(ch, start, length); |
| } |
| } |
| |
| } |