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The AWS SDK for Java with support for OSGi. The AWS SDK for Java provides Java APIs for building software on AWS' cost-effective, scalable, and reliable infrastructure products. The AWS Java SDK allows developers to code against APIs for all of Amazon's infrastructure web services (Amazon S3, Amazon EC2, Amazon SQS, Amazon Relational Database Service, Amazon AutoScaling, etc).

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/*
 * Copyright 2011-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"). You may not
 * use this file except in compliance with the License. A copy of the License is
 * located at
 * 
 * http://aws.amazon.com/apache2.0
 * 
 * or in the "license" file accompanying this file. This file 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 com.amazonaws.services.sqs.model.transform;

import java.util.Map;
import java.util.HashMap;
import java.util.ArrayList;
import java.util.Map.Entry;

import javax.xml.stream.events.XMLEvent;

import com.amazonaws.services.sqs.model.*;
import com.amazonaws.transform.Unmarshaller;
import com.amazonaws.transform.MapEntry;
import com.amazonaws.transform.StaxUnmarshallerContext;
import com.amazonaws.transform.SimpleTypeStaxUnmarshallers.*;

/**
 * SendMessageBatchRequestEntry StAX Unmarshaller
 */
public class SendMessageBatchRequestEntryStaxUnmarshaller implements
        Unmarshaller {

    private static class MessageAttributesMapEntryUnmarshaller
            implements
            Unmarshaller, StaxUnmarshallerContext> {

        @Override
        public Entry unmarshall(
                StaxUnmarshallerContext context) throws Exception {
            int originalDepth = context.getCurrentDepth();
            int targetDepth = originalDepth + 1;

            MapEntry entry = new MapEntry();

            while (true) {
                XMLEvent xmlEvent = context.nextEvent();
                if (xmlEvent.isEndDocument())
                    return entry;

                if (xmlEvent.isAttribute() || xmlEvent.isStartElement()) {
                    if (context.testExpression("Name", targetDepth)) {
                        entry.setKey(StringStaxUnmarshaller.getInstance()
                                .unmarshall(context));
                        continue;
                    }
                    if (context.testExpression("Value", targetDepth)) {
                        entry.setValue(MessageAttributeValueStaxUnmarshaller
                                .getInstance().unmarshall(context));
                        continue;
                    }
                } else if (xmlEvent.isEndElement()) {
                    if (context.getCurrentDepth() < originalDepth)
                        return entry;
                }
            }
        }

        private static MessageAttributesMapEntryUnmarshaller instance;

        public static MessageAttributesMapEntryUnmarshaller getInstance() {
            if (instance == null)
                instance = new MessageAttributesMapEntryUnmarshaller();
            return instance;
        }

    }

    public SendMessageBatchRequestEntry unmarshall(
            StaxUnmarshallerContext context) throws Exception {
        SendMessageBatchRequestEntry sendMessageBatchRequestEntry = new SendMessageBatchRequestEntry();
        int originalDepth = context.getCurrentDepth();
        int targetDepth = originalDepth + 1;

        if (context.isStartOfDocument())
            targetDepth += 1;

        while (true) {
            XMLEvent xmlEvent = context.nextEvent();
            if (xmlEvent.isEndDocument())
                return sendMessageBatchRequestEntry;

            if (xmlEvent.isAttribute() || xmlEvent.isStartElement()) {

                if (context.testExpression("Id", targetDepth)) {
                    sendMessageBatchRequestEntry.setId(StringStaxUnmarshaller
                            .getInstance().unmarshall(context));
                    continue;
                }

                if (context.testExpression("MessageBody", targetDepth)) {
                    sendMessageBatchRequestEntry
                            .setMessageBody(StringStaxUnmarshaller
                                    .getInstance().unmarshall(context));
                    continue;
                }

                if (context.testExpression("DelaySeconds", targetDepth)) {
                    sendMessageBatchRequestEntry
                            .setDelaySeconds(IntegerStaxUnmarshaller
                                    .getInstance().unmarshall(context));
                    continue;
                }

                if (context.testExpression("MessageAttribute", targetDepth)) {
                    Entry entry = MessageAttributesMapEntryUnmarshaller
                            .getInstance().unmarshall(context);
                    sendMessageBatchRequestEntry.addMessageAttributesEntry(
                            entry.getKey(), entry.getValue());
                    continue;
                }

            } else if (xmlEvent.isEndElement()) {
                if (context.getCurrentDepth() < originalDepth) {
                    return sendMessageBatchRequestEntry;
                }
            }
        }
    }

    private static SendMessageBatchRequestEntryStaxUnmarshaller instance;

    public static SendMessageBatchRequestEntryStaxUnmarshaller getInstance() {
        if (instance == null)
            instance = new SendMessageBatchRequestEntryStaxUnmarshaller();
        return instance;
    }
}