Message.java

/*
 * Copyright 2010-2016 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.simpleemail.model;

import java.io.Serializable;

/**
 * <p>
 * Represents the message to be sent, composed of a subject and a body.
 * </p>
 */
public class Message implements Serializable {
    /**
     * <p>
     * The subject of the message: A short summary of the content, which will
     * appear in the recipient's inbox.
     * </p>
     */
    private Content subject;

    /**
     * <p>
     * The message body.
     * </p>
     */
    private Body body;

    /**
     * Default constructor for Message object. Callers should use the setter or
     * fluent setter (with...) methods to initialize any additional object
     * members.
     */
    public Message() {
    }

    /**
     * Constructs a new Message object. Callers should use the setter or fluent
     * setter (with...) methods to initialize any additional object members.
     * 
     * @param subject <p>
     *            The subject of the message: A short summary of the content,
     *            which will appear in the recipient's inbox.
     *            </p>
     * @param body <p>
     *            The message body.
     *            </p>
     */
    public Message(Content subject, Body body) {
        setSubject(subject);
        setBody(body);
    }

    /**
     * <p>
     * The subject of the message: A short summary of the content, which will
     * appear in the recipient's inbox.
     * </p>
     *
     * @return <p>
     *         The subject of the message: A short summary of the content, which
     *         will appear in the recipient's inbox.
     *         </p>
     */
    public Content getSubject() {
        return subject;
    }

    /**
     * <p>
     * The subject of the message: A short summary of the content, which will
     * appear in the recipient's inbox.
     * </p>
     *
     * @param subject <p>
     *            The subject of the message: A short summary of the content,
     *            which will appear in the recipient's inbox.
     *            </p>
     */
    public void setSubject(Content subject) {
        this.subject = subject;
    }

    /**
     * <p>
     * The subject of the message: A short summary of the content, which will
     * appear in the recipient's inbox.
     * </p>
     * <p>
     * Returns a reference to this object so that method calls can be chained
     * together.
     *
     * @param subject <p>
     *            The subject of the message: A short summary of the content,
     *            which will appear in the recipient's inbox.
     *            </p>
     * @return A reference to this updated object so that method calls can be
     *         chained together.
     */
    public Message withSubject(Content subject) {
        this.subject = subject;
        return this;
    }

    /**
     * <p>
     * The message body.
     * </p>
     *
     * @return <p>
     *         The message body.
     *         </p>
     */
    public Body getBody() {
        return body;
    }

    /**
     * <p>
     * The message body.
     * </p>
     *
     * @param body <p>
     *            The message body.
     *            </p>
     */
    public void setBody(Body body) {
        this.body = body;
    }

    /**
     * <p>
     * The message body.
     * </p>
     * <p>
     * Returns a reference to this object so that method calls can be chained
     * together.
     *
     * @param body <p>
     *            The message body.
     *            </p>
     * @return A reference to this updated object so that method calls can be
     *         chained together.
     */
    public Message withBody(Body body) {
        this.body = body;
        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 (getSubject() != null)
            sb.append("Subject: " + getSubject() + ",");
        if (getBody() != null)
            sb.append("Body: " + getBody());
        sb.append("}");
        return sb.toString();
    }

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

        hashCode = prime * hashCode + ((getSubject() == null) ? 0 : getSubject().hashCode());
        hashCode = prime * hashCode + ((getBody() == null) ? 0 : getBody().hashCode());
        return hashCode;
    }

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

        if (obj instanceof Message == false)
            return false;
        Message other = (Message) obj;

        if (other.getSubject() == null ^ this.getSubject() == null)
            return false;
        if (other.getSubject() != null && other.getSubject().equals(this.getSubject()) == false)
            return false;
        if (other.getBody() == null ^ this.getBody() == null)
            return false;
        if (other.getBody() != null && other.getBody().equals(this.getBody()) == false)
            return false;
        return true;
    }
}