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/*******************************************************************************
 *
 *    Copyright (C) 2015-2018 the BBoxDB project
 *  
 *    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.bboxdb.storage.entity;

public class TupleEntityIdentifier implements EntityIdentifier {
	
	private final String key;
	private final long version;
	
	public TupleEntityIdentifier(final String key, final long version) {
		this.key = key;
		this.version = version;
	}

	public String getKey() {
		return key;
	}

	public long getVersion() {
		return version;
	}

	@Override
	public String toString() {
		return "TupleEntityIdentifier [key=" + key + ", version=" + version + "]";
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((key == null) ? 0 : key.hashCode());
		result = prime * result + (int) (version ^ (version >>> 32));
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		TupleEntityIdentifier other = (TupleEntityIdentifier) obj;
		if (key == null) {
			if (other.key != null)
				return false;
		} else if (!key.equals(other.key))
			return false;
		if (version != other.version)
			return false;
		return true;
	}

}