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• KeyValue.java

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com.amazonaws.services.elasticmapreduce.model.KeyValue Maven / Gradle / Ivy

/*
 * 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;

/**
 * 

 * A key value pair.
 * 
 */
public class KeyValue implements Serializable, Cloneable {

    /**
     * 

     * The unique identifier of a key value pair.
     * 
     */
    private String key;
    /**
     * 

     * The value part of the identified key.
     * 
     */
    private String value;

    /**
     * Default constructor for KeyValue object. Callers should use the setter or
     * fluent setter (with...) methods to initialize the object after creating
     * it.
     */
    public KeyValue() {
    }

    /**
     * Constructs a new KeyValue object. Callers should use the setter or fluent
     * setter (with...) methods to initialize any additional object members.
     * 
     * @param key
     *        The unique identifier of a key value pair.
     * @param value
     *        The value part of the identified key.
     */
    public KeyValue(String key, String value) {
        setKey(key);
        setValue(value);
    }

    /**
     * 

     * The unique identifier of a key value pair.
     * 
     * 
     * @param key
     *        The unique identifier of a key value pair.
     */

    public void setKey(String key) {
        this.key = key;
    }

    /**
     * 

     * The unique identifier of a key value pair.
     * 
     * 
     * @return The unique identifier of a key value pair.
     */

    public String getKey() {
        return this.key;
    }

    /**
     * 

     * The unique identifier of a key value pair.
     * 
     * 
     * @param key
     *        The unique identifier of a key value pair.
     * @return Returns a reference to this object so that method calls can be
     *         chained together.
     */

    public KeyValue withKey(String key) {
        setKey(key);
        return this;
    }

    /**
     * 

     * The value part of the identified key.
     * 
     * 
     * @param value
     *        The value part of the identified key.
     */

    public void setValue(String value) {
        this.value = value;
    }

    /**
     * 

     * The value part of the identified key.
     * 
     * 
     * @return The value part of the identified key.
     */

    public String getValue() {
        return this.value;
    }

    /**
     * 

     * The value part of the identified key.
     * 
     * 
     * @param value
     *        The value part of the identified key.
     * @return Returns a reference to this object so that method calls can be
     *         chained together.
     */

    public KeyValue withValue(String value) {
        setValue(value);
        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 (getKey() != null)
            sb.append("Key: " + getKey() + ",");
        if (getValue() != null)
            sb.append("Value: " + getValue());
        sb.append("}");
        return sb.toString();
    }

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

        if (obj instanceof KeyValue == false)
            return false;
        KeyValue other = (KeyValue) obj;
        if (other.getKey() == null ^ this.getKey() == null)
            return false;
        if (other.getKey() != null
                && other.getKey().equals(this.getKey()) == false)
            return false;
        if (other.getValue() == null ^ this.getValue() == null)
            return false;
        if (other.getValue() != null
                && other.getValue().equals(this.getValue()) == false)
            return false;
        return true;
    }

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

        hashCode = prime * hashCode
                + ((getKey() == null) ? 0 : getKey().hashCode());
        hashCode = prime * hashCode
                + ((getValue() == null) ? 0 : getValue().hashCode());
        return hashCode;
    }

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