/**
 * The contents of this file are subject to the license and copyright
 * detailed in the LICENSE and NOTICE files at the root of the source
 * tree and available online at
 *
 * http://www.dspace.org/license/
 */
package org.dspace.browse;

import org.dspace.core.ConfigurationManager;
import org.dspace.core.Context;

/**
 * Factory class to generate DAOs based on the configuration
 * 
 * @author Richard Jones
 *
 */
public class BrowseDAOFactory
{
	/**
	 * Get an instance of the relevant Read Only DAO class, which will
	 * conform to the BrowseDAO interface
	 * 
	 * @param context	the DSpace context
	 * @return			the relevant DAO
	 * @throws BrowseException if browse error
	 */
	public static BrowseDAO getInstance(Context context)
		throws BrowseException
	{
	    String className = ConfigurationManager.getProperty("browseDAO.class");
        if (className == null)
        {
            // SOLR implementation is the default since DSpace 4.0        	
            return new SolrBrowseDAO(context);
        }
        try
        {
            return (BrowseDAO) Class
                    .forName(ConfigurationManager.getProperty("browseDAO.class"))
                    .getConstructor(Context.class).newInstance(context);
        }
        catch (Exception e)
        {
            throw new BrowseException("The configuration for browseDAO is invalid: "+className, e);
        }
	}
}