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The Amazon Web Services 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 2010-2014 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;

import java.io.Serializable;

/**
 * 
 * Describes a block device mapping.
 * 
 */
public class InstanceBlockDeviceMapping implements Serializable {

    /**
     * The device name exposed to the instance (for example,
     * /dev/sdh).
     */
    private String deviceName;

    /**
     * Parameters used to automatically set up Amazon EBS volumes when the
     * instance is launched.
     */
    private EbsInstanceBlockDevice ebs;

    /**
     * The device name exposed to the instance (for example,
     * /dev/sdh).
     *
     * @return The device name exposed to the instance (for example,
     *         /dev/sdh).
     */
    public String getDeviceName() {
        return deviceName;
    }
    
    /**
     * The device name exposed to the instance (for example,
     * /dev/sdh).
     *
     * @param deviceName The device name exposed to the instance (for example,
     *         /dev/sdh).
     */
    public void setDeviceName(String deviceName) {
        this.deviceName = deviceName;
    }
    
    /**
     * The device name exposed to the instance (for example,
     * /dev/sdh).
     * 
     * Returns a reference to this object so that method calls can be chained together.
     *
     * @param deviceName The device name exposed to the instance (for example,
     *         /dev/sdh).
     *
     * @return A reference to this updated object so that method calls can be chained 
     *         together.
     */
    public InstanceBlockDeviceMapping withDeviceName(String deviceName) {
        this.deviceName = deviceName;
        return this;
    }

    /**
     * Parameters used to automatically set up Amazon EBS volumes when the
     * instance is launched.
     *
     * @return Parameters used to automatically set up Amazon EBS volumes when the
     *         instance is launched.
     */
    public EbsInstanceBlockDevice getEbs() {
        return ebs;
    }
    
    /**
     * Parameters used to automatically set up Amazon EBS volumes when the
     * instance is launched.
     *
     * @param ebs Parameters used to automatically set up Amazon EBS volumes when the
     *         instance is launched.
     */
    public void setEbs(EbsInstanceBlockDevice ebs) {
        this.ebs = ebs;
    }
    
    /**
     * Parameters used to automatically set up Amazon EBS volumes when the
     * instance is launched.
     * 
     * Returns a reference to this object so that method calls can be chained together.
     *
     * @param ebs Parameters used to automatically set up Amazon EBS volumes when the
     *         instance is launched.
     *
     * @return A reference to this updated object so that method calls can be chained 
     *         together.
     */
    public InstanceBlockDeviceMapping withEbs(EbsInstanceBlockDevice ebs) {
        this.ebs = ebs;
        return this;
    }

    /**
     * Returns a string representation of this object; useful for testing and
     * debugging.
     *
     * @return A string representation of this object.
     *
     * @see java.lang.Object#toString()
     */
    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("{");
        if (getDeviceName() != null) sb.append("DeviceName: " + getDeviceName() + ",");
        if (getEbs() != null) sb.append("Ebs: " + getEbs() );
        sb.append("}");
        return sb.toString();
    }
    
    @Override
    public int hashCode() {
        final int prime = 31;
        int hashCode = 1;
        
        hashCode = prime * hashCode + ((getDeviceName() == null) ? 0 : getDeviceName().hashCode()); 
        hashCode = prime * hashCode + ((getEbs() == null) ? 0 : getEbs().hashCode()); 
        return hashCode;
    }
    
    @Override
    public boolean equals(Object obj) {
        if (this == obj) return true;
        if (obj == null) return false;

        if (obj instanceof InstanceBlockDeviceMapping == false) return false;
        InstanceBlockDeviceMapping other = (InstanceBlockDeviceMapping)obj;
        
        if (other.getDeviceName() == null ^ this.getDeviceName() == null) return false;
        if (other.getDeviceName() != null && other.getDeviceName().equals(this.getDeviceName()) == false) return false; 
        if (other.getEbs() == null ^ this.getEbs() == null) return false;
        if (other.getEbs() != null && other.getEbs().equals(this.getEbs()) == false) return false; 
        return true;
    }
    
}