package com.c2kernel.persistency;

import com.c2kernel.common.ObjectCannotBeUpdated;
import com.c2kernel.common.ObjectNotFoundException;
import com.c2kernel.lookup.AgentPath;
import com.c2kernel.lookup.ItemPath;
import com.c2kernel.process.auth.Authenticator;

/**
 * @author abranson
 *
 */
public interface NextKeyManager {

	
	public void open(Authenticator auth);
	/**
	 * 
	 * @return
	 * @throws ObjectCannotBeUpdated
	 * @throws ObjectNotFoundException
	 */
	public ItemPath generateNextEntityKey()
		    throws ObjectCannotBeUpdated, ObjectNotFoundException;
	
	/**
	 * @return
	 * @throws ObjectCannotBeUpdated
	 * @throws ObjectNotFoundException
	 */
	public AgentPath generateNextAgentKey()
		    throws ObjectCannotBeUpdated, ObjectNotFoundException;
	
	/**
	 * @param sysKey
	 * @throws ObjectCannotBeUpdated
	 * @throws ObjectNotFoundException
	 */
	public void writeLastEntityKey(int sysKey) throws ObjectCannotBeUpdated, ObjectNotFoundException;
	
	/**
	 * @return
	 * @throws ObjectNotFoundException
	 */
	public ItemPath getLastEntityPath() throws ObjectNotFoundException;
	
	/**
	 * Shuts down the next key manager
	 */
	public void close();
}