MapTupleSnapshot.java

/*
 * Hibernate OGM, Domain model persistence for NoSQL datastores
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later
 * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */
package org.hibernate.ogm.datastore.map.impl;

import java.util.Map;
import java.util.Set;

import org.hibernate.ogm.model.spi.TupleSnapshot;

/**
 * @author Emmanuel Bernard <emmanuel@hibernate.org>
 */
public final class MapTupleSnapshot implements TupleSnapshot {
	private final Map<String, Object> map;

	public MapTupleSnapshot(Map<String, Object> map) {
		if ( map == null ) {
			throw new NullPointerException( "the map parameter is required" );
		}
		this.map = map;
	}
	@Override
	public Object get(String column) {
		return map.get( column );
	}

	@Override
	public boolean isEmpty() {
		return map.isEmpty();
	}

	@Override
	public Set<String> getColumnNames() {
		return map.keySet();
	}

	public Map<String, Object> getMap() {
		return map;
	}
}