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

/**
 * ReplaceableItem StAX Unmarshaller
 */
public class ReplaceableItemStaxUnmarshaller implements
        Unmarshaller {

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

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

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

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

                if (context.testExpression("ItemName", targetDepth)) {
                    replaceableItem.setName(StringStaxUnmarshaller
                            .getInstance().unmarshall(context));
                    continue;
                }

                if (context.testExpression("Attribute", targetDepth)) {
                    replaceableItem
                            .withAttributes(ReplaceableAttributeStaxUnmarshaller
                                    .getInstance().unmarshall(context));
                    continue;
                }

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

    private static ReplaceableItemStaxUnmarshaller instance;

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