/*
* Created on Sep 22, 2004 Copyright (C) 2001-4, Anthony Harrison anh23@pitt.edu
* 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.production.condition;
import java.util.Collection;
import java.util.Collections;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jactr.core.chunktype.IChunkType;
import org.jactr.core.model.IModel;
import org.jactr.core.production.VariableBindings;
import org.jactr.core.production.request.ChunkTypeRequest;
import org.jactr.core.slot.ISlot;
/**
* ChunkPatterns are a type of condition used only for searching within a model
* they are not to be used as conditions in a production..
*/
public class ChunkPattern extends AbstractSlotCondition
{
/**
* Logger definition
*/
static private transient Log LOGGER = LogFactory.getLog(ChunkPattern.class);
private IChunkType _chunkType;
public ChunkPattern(IChunkType chunkType, Collection<? extends ISlot> slots)
{
setRequest(new ChunkTypeRequest(chunkType, slots));
}
public ChunkPattern(IChunkType chunkType)
{
this(chunkType, Collections.EMPTY_LIST);
}
public ChunkPattern()
{
super();
}
public ChunkPattern clone(IModel model, VariableBindings variableBindings)
throws CannotMatchException
{
return new ChunkPattern(_chunkType, getSlots());
}
public IChunkType getChunkType()
{
return _chunkType;
}
@Override
protected String createToString()
{
return String.format("Pattern(%s,%s", getChunkType(), getSlots());
}
public int bind(IModel model, VariableBindings variableBindings,
boolean isIterative) throws CannotMatchException
{
try
{
return getRequest().bind(model, variableBindings, isIterative);
}
catch (CannotMatchException cme)
{
cme.getMismatch().setCondition(this);
throw cme;
}
}
}