// ========================================================================
// $Id: LocalStore.java,v 1.4 2004/05/09 20:30:47 gregwilkins Exp $
// Copyright 2002-2004 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at 
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========================================================================

package org.mortbay.j2ee.session;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.jboss.logging.Logger;

//----------------------------------------

public class LocalStore implements Store
{
    protected static final Logger _log = Logger.getLogger(LocalStore.class);

    Map _sessions = new HashMap();

    protected Manager _manager;

    public Manager getManager()
    {
        return _manager;
    }

    public void setManager(Manager manager)
    {
        _manager = manager;
    }

    // Store LifeCycle
    public void start()
    {
    }

    public void stop()
    {
    }

    public void destroy()
    {
    }

    // State LifeCycle
    public State newState(String id, int maxInactiveInterval)
    {
        return new LocalState(id, maxInactiveInterval,
                _actualMaxInactiveInterval);
    }

    public State loadState(String id)
    {
        synchronized (_sessions)
        {
            return (State) _sessions.get(id);
        }
    }

    public void storeState(State state)
    {
        try
        {
            synchronized (_sessions)
            {
                _sessions.put(state.getId(), state);
            }
        }
        catch (Exception e)
        {
            _log.warn("could not store session");
        }
    }

    public void removeState(State state)
    {
        try
        {
            synchronized (_sessions)
            {
                _sessions.remove(state.getId());
            }
        }
        catch (Exception e)
        {
            _log.error("could not remove session", e);
        }
    }

    public String allocateId(HttpServletRequest request)
    {
        return getManager().getIdGenerator().nextId(request);
    }

    public void deallocateId(String id)
    {
    }

    public boolean isDistributed()
    {
        return false;
    }

    public void passivateSession(StateAdaptor sa)
    {
        // we don't do that !
        sa.invalidate();
    }

    // there is no need to scavenge distributed state - as there is none.
    public void setScavengerPeriod(int period)
    {
    }

    public void setScavengerExtraTime(int time)
    {
    }

    public void scavenge()
    {
    }

    protected int _actualMaxInactiveInterval = 0;

    public void setActualMaxInactiveInterval(int interval)
    {
        _actualMaxInactiveInterval = interval;
    }

    public int getActualMaxInactiveInterval()
    {
        return _actualMaxInactiveInterval;
    }

    public Object clone()
    {
        LocalStore ls = new LocalStore();
        ls.setActualMaxInactiveInterval(_actualMaxInactiveInterval);
        return ls;
    }
}
