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The AWS Java SDK for Amazon EMR module holds the client classes that are used for communicating with Amazon Elastic MapReduce Service
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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.elasticmapreduce.model;

import java.io.Serializable;

/**
 * 
 * This input determines which instance groups to retrieve.
 * 
 */
public class ListInstanceGroupsResult extends
        com.amazonaws.AmazonWebServiceResult
        implements Serializable, Cloneable {

    /**
     * 
     * The list of instance groups for the cluster and given filters.
     * 
     */
    private com.amazonaws.internal.SdkInternalList instanceGroups;
    /**
     * 
     * The pagination token that indicates the next set of results to retrieve.
     * 
     */
    private String marker;

    /**
     * 
     * The list of instance groups for the cluster and given filters.
     * 
     * 
     * @return The list of instance groups for the cluster and given filters.
     */

    public java.util.List getInstanceGroups() {
        if (instanceGroups == null) {
            instanceGroups = new com.amazonaws.internal.SdkInternalList();
        }
        return instanceGroups;
    }

    /**
     * 
     * The list of instance groups for the cluster and given filters.
     * 
     * 
     * @param instanceGroups
     *        The list of instance groups for the cluster and given filters.
     */

    public void setInstanceGroups(
            java.util.Collection instanceGroups) {
        if (instanceGroups == null) {
            this.instanceGroups = null;
            return;
        }

        this.instanceGroups = new com.amazonaws.internal.SdkInternalList(
                instanceGroups);
    }

    /**
     * 
     * The list of instance groups for the cluster and given filters.
     * 
     * 
     * NOTE: This method appends the values to the existing list (if
     * any). Use {@link #setInstanceGroups(java.util.Collection)} or
     * {@link #withInstanceGroups(java.util.Collection)} if you want to override
     * the existing values.
     * 
     * 
     * @param instanceGroups
     *        The list of instance groups for the cluster and given filters.
     * @return Returns a reference to this object so that method calls can be
     *         chained together.
     */

    public ListInstanceGroupsResult withInstanceGroups(
            InstanceGroup... instanceGroups) {
        if (this.instanceGroups == null) {
            setInstanceGroups(new com.amazonaws.internal.SdkInternalList(
                    instanceGroups.length));
        }
        for (InstanceGroup ele : instanceGroups) {
            this.instanceGroups.add(ele);
        }
        return this;
    }

    /**
     * 
     * The list of instance groups for the cluster and given filters.
     * 
     * 
     * @param instanceGroups
     *        The list of instance groups for the cluster and given filters.
     * @return Returns a reference to this object so that method calls can be
     *         chained together.
     */

    public ListInstanceGroupsResult withInstanceGroups(
            java.util.Collection instanceGroups) {
        setInstanceGroups(instanceGroups);
        return this;
    }

    /**
     * 
     * The pagination token that indicates the next set of results to retrieve.
     * 
     * 
     * @param marker
     *        The pagination token that indicates the next set of results to
     *        retrieve.
     */

    public void setMarker(String marker) {
        this.marker = marker;
    }

    /**
     * 
     * The pagination token that indicates the next set of results to retrieve.
     * 
     * 
     * @return The pagination token that indicates the next set of results to
     *         retrieve.
     */

    public String getMarker() {
        return this.marker;
    }

    /**
     * 
     * The pagination token that indicates the next set of results to retrieve.
     * 
     * 
     * @param marker
     *        The pagination token that indicates the next set of results to
     *        retrieve.
     * @return Returns a reference to this object so that method calls can be
     *         chained together.
     */

    public ListInstanceGroupsResult withMarker(String marker) {
        setMarker(marker);
        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 (getInstanceGroups() != null)
            sb.append("InstanceGroups: " + getInstanceGroups() + ",");
        if (getMarker() != null)
            sb.append("Marker: " + getMarker());
        sb.append("}");
        return sb.toString();
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;

        if (obj instanceof ListInstanceGroupsResult == false)
            return false;
        ListInstanceGroupsResult other = (ListInstanceGroupsResult) obj;
        if (other.getInstanceGroups() == null
                ^ this.getInstanceGroups() == null)
            return false;
        if (other.getInstanceGroups() != null
                && other.getInstanceGroups().equals(this.getInstanceGroups()) == false)
            return false;
        if (other.getMarker() == null ^ this.getMarker() == null)
            return false;
        if (other.getMarker() != null
                && other.getMarker().equals(this.getMarker()) == false)
            return false;
        return true;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int hashCode = 1;

        hashCode = prime
                * hashCode
                + ((getInstanceGroups() == null) ? 0 : getInstanceGroups()
                        .hashCode());
        hashCode = prime * hashCode
                + ((getMarker() == null) ? 0 : getMarker().hashCode());
        return hashCode;
    }

    @Override
    public ListInstanceGroupsResult clone() {
        try {
            return (ListInstanceGroupsResult) super.clone();
        } catch (CloneNotSupportedException e) {
            throw new IllegalStateException(
                    "Got a CloneNotSupportedException from Object.clone() "
                            + "even though we're Cloneable!", e);
        }
    }
}