HashedActionStore.java

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2006, Red Hat Middleware LLC, and individual contributors
 * as indicated by the @author tags.
 * 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.
 *
 * (C) 2005-2006,
 * @author JBoss Inc.
 */
/*
 * Copyright (C) 2000, 2001,
 *
 * Arjuna Solutions Limited,
 * Newcastle upon Tyne,
 * Tyne and Wear,
 * UK.
 *
 * $Id: HashedActionStore.java 2342 2006-03-30 13:06:17Z  $
 */

package com.arjuna.ats.internal.arjuna.objectstore;

import com.arjuna.ats.arjuna.common.ObjectStoreEnvironmentBean;
import com.arjuna.ats.arjuna.exceptions.ObjectStoreException;

/**
 * The basic action store implementations store the object states in a separate
 * file within the same directory in the object store, determined by the
 * object's type. However, as the number of file entries within the directory
 * increases, so does the search time for finding a specific file. The HashStore
 * implementation hashes object states over many different sub-directories to
 * attempt to keep the number of files in a given directory low, thus improving
 * performance as the number of object states grows. Currently the hash number
 * is set for both user hashed stores and action hashed stores.
 * 
 * @author Mark Little (mark@arjuna.com)
 * @version $Id: HashedActionStore.java 2342 2006-03-30 13:06:17Z $
 * @since JTS 2.1.
 */

public class HashedActionStore extends HashedStore
{
    public HashedActionStore(ObjectStoreEnvironmentBean objectStoreEnvironmentBean) throws ObjectStoreException
    {
        super(objectStoreEnvironmentBean);

        // overrides parents use of isObjectStoreSync
        doSync = objectStoreEnvironmentBean.isTransactionSync();
    }
}