/*
* Created on Jul 14, 2006 Copyright (C) 2001-6, Anthony Harrison anh23@pitt.edu
* (jactr.org) This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of the License,
* or (at your option) any later version. This library 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 Lesser General Public License for more details. You should have
* received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.jactr.core.buffer.six;
import java.util.Map;
import org.jactr.core.buffer.IActivationBuffer;
import org.jactr.core.chunk.IChunk;
import org.jactr.core.production.condition.CannotMatchException;
import org.jactr.core.production.request.SlotBasedRequest;
import org.jactr.core.slot.IUniqueSlotContainer;
public interface IStatusBuffer extends IActivationBuffer, IUniqueSlotContainer
{
static public final String STATE_SLOT = "state";
static public final String BUFFER_SLOT = "buffer";
public boolean isStateError();
public boolean isStateFree();
public boolean isStateBusy();
public boolean isBufferRequested();
public boolean isBufferUnrequested();
public boolean isBufferFull();
public boolean isBufferEmpty();
public void setStateChunk(IChunk chunk);
public void setBufferChunk(IChunk chunk);
/**
* Required to permit status buffers to participate in the variable binding
* process of production instantiation. Since we don't know a priori what
* the slots the status buffers will contain or their possible values, it is
* up to the status buffers to attempt to bind variable values
*
* @param request
* @param bindings
* @return
* @throws CannotMatchException
*/
public int bind(SlotBasedRequest request, Map<String, Object> bindings,
boolean isIterative) throws CannotMatchException;
}