/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* JBoss, Home of Professional Open Source
* Copyright 2011 Red Hat Inc. and/or its affiliates and other contributors
* as indicated by the @authors tag. All rights reserved.
* See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
package org.hibernate.ogm.datastore.spi;
import java.util.Set;
import org.hibernate.ogm.grid.RowKey;
/**
* Represents the Association snapshot as loaded by the datastore.
* Interface implemented by the datastore dialect to avoid data
* duplication in memory (if possible).
*
* Note that this snapshot will not be modified by the Hibernate OGM engine
*
* @author Emmanuel Bernard <emmanuel@hibernate.org>
*/
public interface AssociationSnapshot {
/**
* Returns the value set in a column or null if not set
*/
public Tuple get(RowKey column);
public boolean containsKey(RowKey column);
public int size();
public Set<RowKey> getRowKeys();
}