com.continuuity.loom.common.queue.Element.java Source code

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Here is the source code for com.continuuity.loom.common.queue.Element.java

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/*
 * Copyright 2012-2014, Continuuity, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License 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.continuuity.loom.common.queue;

import com.google.gson.JsonObject;

import java.util.UUID;

/**
 * The element to be placed in the {@link TrackingQueue}.
 */
public class Element {
    private String id;
    private String value;

    /**
     * Queue element with the given id and value.
     *
     * @param id Id of the element.
     * @param value Value of the element.
     */
    public Element(String id, String value) {
        this.id = id;
        this.value = value;
    }

    /**
     * Queue element with the given value and an automatically generated id.
     *
     * @param value Value of the element.
     */
    public Element(String value) {
        this(UUID.randomUUID().toString(), value);
    }

    /**
     * Id of the element.
     *
     * @return Id of the element.
     */
    public String getId() {
        return id;
    }

    /**
     * Value of the element.
     *
     * @return Value of the element.
     */
    public String getValue() {
        return value;
    }

    @Override
    public String toString() {
        JsonObject object = new JsonObject();
        object.addProperty("id", id);
        object.addProperty("value", value);
        return object.toString();
    }
}