/**
* 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.aws.ec2.xml;
import java.util.Set;
import javax.inject.Inject;
import org.jclouds.aws.ec2.domain.SpotInstanceRequest;
import org.jclouds.http.HttpRequest;
import org.jclouds.http.functions.ParseSax;
import org.jclouds.http.functions.ParseSax.HandlerWithResult;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.ImmutableSet.Builder;
/**
* @author Adrian Cole
*/
public class SpotInstancesHandler extends ParseSax.HandlerWithResult<Set<SpotInstanceRequest>> {
private final Builder<SpotInstanceRequest> spotRequests = ImmutableSet.builder();
private final SpotInstanceHandler spotRequestHandler;
private int itemDepth;
@Inject
public SpotInstancesHandler(SpotInstanceHandler spotRequestHandler) {
this.spotRequestHandler = spotRequestHandler;
}
public Set<SpotInstanceRequest> getResult() {
return spotRequests.build();
}
@Override
public HandlerWithResult<Set<SpotInstanceRequest>> setContext(HttpRequest request) {
spotRequestHandler.setContext(request);
return super.setContext(request);
}
@Override
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
if (qName.equals("item"))
itemDepth++;
if (itemDepth >= 1)
spotRequestHandler.startElement(uri, localName, qName, attributes);
}
@Override
public void endElement(String uri, String localName, String qName) throws SAXException {
if (qName.equals("item") && itemDepth == 1) {
spotRequests.add(spotRequestHandler.getResult());
}
if (qName.equals("item"))
itemDepth--;
if (itemDepth >= 1)
spotRequestHandler.endElement(uri, localName, qName);
}
public void characters(char ch[], int start, int length) {
if (itemDepth >= 1)
spotRequestHandler.characters(ch, start, length);
}
}