org.jclouds.sqs.xml.SendMessageBatchResultEntryHandler.java Source code

Introduction

Here is the source code for org.jclouds.sqs.xml.SendMessageBatchResultEntryHandler.java

Source

/*
 * 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.jclouds.sqs.xml;

import static com.google.common.io.BaseEncoding.base16;
import static org.jclouds.util.SaxUtils.currentOrNull;

import java.util.Map;
import java.util.Map.Entry;

import org.jclouds.http.functions.ParseSax;
import org.jclouds.sqs.domain.MessageIdAndMD5;

import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Iterables;
import com.google.common.hash.HashCodes;

/**
 * @see <a href=
 *      "http://docs.amazonwebservices.com/AWSSimpleQueueService/2011-10-01/APIReference/Query_QueryReceiveMessage.html"
 *      />
 * 
 * @author Adrian Cole
 */
public class SendMessageBatchResultEntryHandler
        extends ParseSax.HandlerForGeneratedRequestWithResult<Map.Entry<String, MessageIdAndMD5>> {

    private StringBuilder currentText = new StringBuilder();
    private MessageIdAndMD5.Builder builder = MessageIdAndMD5.builder();
    private String id;

    @Override
    public Entry<String, MessageIdAndMD5> getResult() {
        try {
            return Iterables.getOnlyElement(ImmutableMap.of(id, builder.build()).entrySet());
        } finally {
            builder = MessageIdAndMD5.builder();
        }
    }

    @Override
    public void endElement(String uri, String name, String qName) {
        if (qName.equals("Id")) {
            this.id = currentOrNull(currentText);
        } else if (qName.equals("MessageId")) {
            builder.id(currentOrNull(currentText));
        } else if (qName.equals("MD5OfMessageBody")) {
            builder.md5(HashCodes.fromBytes(base16().lowerCase().decode(currentOrNull(currentText))));
        }
        currentText = new StringBuilder();
    }

    @Override
    public void characters(char ch[], int start, int length) {
        currentText.append(ch, start, length);
    }

}