/**
* 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.azurequeue.xml;
import java.util.Date;
import java.util.Set;
import javax.inject.Inject;
import org.jclouds.azurequeue.domain.QueueMessage;
import org.jclouds.date.DateService;
import org.jclouds.http.functions.ParseSax;
import com.google.common.collect.Sets;
/**
* Parses the following XML document:
* <p/>
* QueueMessagesList
*
* @see <a href="http://msdn.microsoft.com/en-us/library/dd179474%28v=MSDN.10%29.aspx" />
* @author Adrian Cole
*/
public class QueueMessagesListHandler extends ParseSax.HandlerWithResult<Set<QueueMessage>> {
private Set<QueueMessage> messages = Sets.newLinkedHashSet();
private String messageId;
private Date insertionTime;
private Date expirationTime;
private int dequeueCount;
private String popReceipt;
private Date timeNextVisible;
private String messageText;
private StringBuilder currentText = new StringBuilder();
private final DateService dateService;
@Inject
public QueueMessagesListHandler(DateService dateService) {
this.dateService = dateService;
}
public Set<QueueMessage> getResult() {
return messages;
}
public void endElement(String uri, String name, String qName) {
if (qName.equals("MessageId")) {
this.messageId = currentText.toString().trim();
} else if (qName.equals("InsertionTime")) {
this.insertionTime = parseDate();
} else if (qName.equals("ExpirationTime")) {
this.expirationTime = parseDate();
} else if (qName.equals("DequeueCount")) {
this.dequeueCount = Integer.parseInt(currentText.toString().trim());
} else if (qName.equals("PopReceipt")) {
this.popReceipt = currentText.toString().trim();
} else if (qName.equals("TimeNextVisible")) {
this.timeNextVisible = parseDate();
} else if (qName.equals("MessageText")) {
// TODO: figure out why we need to do trim. excess leading whitespace seems to be from
// outside the element
this.messageText = currentText.toString().trim();
} else if (qName.equals("QueueMessage")) {
messages.add(new QueueMessage(messageId, insertionTime, expirationTime, dequeueCount,
popReceipt, timeNextVisible, messageText));
messageId = null;
insertionTime = null;
expirationTime = null;
dequeueCount = -1;
popReceipt = null;
timeNextVisible = null;
messageText = null;
}
currentText = new StringBuilder();
}
private Date parseDate() {
return dateService.rfc822DateParse(currentText.toString().trim());
}
public void characters(char ch[], int start, int length) {
currentText.append(ch, start, length);
}
}