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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.ec2.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.ec2.model.*;
import com.amazonaws.transform.Unmarshaller;
import com.amazonaws.transform.MapEntry;
import com.amazonaws.transform.StaxUnmarshallerContext;
import com.amazonaws.transform.SimpleTypeStaxUnmarshallers.*;

/**
 * AvailableCapacity StAX Unmarshaller
 */
public class AvailableCapacityStaxUnmarshaller implements
        Unmarshaller {

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

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

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

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

                if (context.testExpression("availableInstanceCapacity/item",
                        targetDepth)) {
                    availableCapacity
                            .withAvailableInstanceCapacity(InstanceCapacityStaxUnmarshaller
                                    .getInstance().unmarshall(context));
                    continue;
                }

                if (context.testExpression("availableVCpus", targetDepth)) {
                    availableCapacity.setAvailableVCpus(IntegerStaxUnmarshaller
                            .getInstance().unmarshall(context));
                    continue;
                }
            } else if (xmlEvent.isEndElement()) {
                if (context.getCurrentDepth() < originalDepth) {
                    return availableCapacity;
                }
            }
        }
    }

    private static AvailableCapacityStaxUnmarshaller instance;

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