/**
 * Copyright (c) 2002-2013 "Neo Technology,"
 * Network Engine for Objects in Lund AB [http://neotechnology.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.kernel;

import java.util.Collection;
import java.util.Iterator;

import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.NotFoundException;

/**
 * Exposes the methods {@link #getConfig()}() and {@link #getManagementBeans(Class)}() a.s.o.
 */
public abstract class AbstractGraphDatabase implements GraphDatabaseService
{
    public abstract String getStoreDir();

    public abstract Config getConfig();

    /**
     * Get a single management bean. Delegates to {@link #getSingleManagementBean(Class)}.
     *
     * @deprecated since Neo4j may now have multiple beans implementing the same bean interface, this method has been
     *             deprecated in favor of {@link #getSingleManagementBean(Class)} and {@link #getManagementBeans(Class)}
     *             . Version 1.5 of Neo4j will be the last version to contain this method.
     */
    @Deprecated
    public final <T> T getManagementBean( Class<T> type )
    {
        return getSingleManagementBean( type );
    }

    public final <T> T getSingleManagementBean( Class<T> type )
    {
        Iterator<T> beans = getManagementBeans( type ).iterator();
        if ( beans.hasNext() )
        {
            T bean = beans.next();
            if ( beans.hasNext() )
                throw new NotFoundException( "More than one management bean for " + type.getName() );
            return bean;
        }
        return null;
    }

    public abstract <T> Collection<T> getManagementBeans( Class<T> type );

    public abstract boolean isReadOnly();

    @Override
    public String toString()
    {
        return getClass().getSimpleName() + " [" + getStoreDir() + "]";
    }
}