Grouper.java

/*
 * Copyright 2013 Proofpoint 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 org.kairosdb.client.builder;

import static org.kairosdb.client.util.Preconditions.checkNotNullOrEmpty;

/**
 * Specifies how data is grouped. This is used by the JSON parser to deserialize a JSON response.
 */
public abstract class Grouper
{
	private String name;

	protected Grouper(String name)
	{
		this.name = checkNotNullOrEmpty(name);
	}

	/**
	 * Returns the name of the group by.
	 * @return group by name
	 */
	public String getName()
	{
		return name;
	}

	@Override
	public boolean equals(Object o)
	{
		if (this == o)
			return true;
		if (o == null || getClass() != o.getClass())
			return false;

		Grouper grouper = (Grouper) o;
		return name.equals(grouper.name);
	}

	@Override
	public int hashCode()
	{
		return name.hashCode();
	}
}