/**
* Copyright 2010 JBoss Inc
*
* 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.drools.spi;
import java.io.Serializable;
import java.util.Iterator;
import org.drools.rule.Declaration;
import org.drools.WorkingMemory;
public interface DataProvider
extends
Serializable,
Cloneable {
public Declaration[] getRequiredDeclarations();
public Object createContext();
public Iterator getResults(Tuple tuple,
WorkingMemory wm,
PropagationContext ctx,
Object providerContext);
public DataProvider clone();
public void replaceDeclaration(Declaration declaration,
Declaration resolved);
}