/**
 * 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.jbpm.workflow.instance;

import org.drools.definition.process.Node;
import org.jbpm.process.instance.ContextInstance;

/**
 * Represents a node instance in a RuleFlow. This is the runtime counterpart
 * of a node, containing all runtime state.  Node instance classes also
 * contain the logic on what to do when it is being triggered (start
 * executing) or completed (end of execution).
 * 
 * @author <a href="mailto:kris_verlaenen@hotmail.com">Kris Verlaenen</a>
 */
public interface NodeInstance extends org.drools.runtime.process.NodeInstance {

    void trigger(org.drools.runtime.process.NodeInstance from, String type);

    void cancel();
    
    Node getNode();
    
    ContextInstance resolveContextInstance(String contextId, Object param);
    
}
