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 /*
  * 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.runtime.process;

An interface that represents an element that is listening for specific types of events.
public interface EventListener {

    
Signals that an event has occurred. The type parameter defines which type of event and the event parameter can contain additional information related to the event.

Parameters:
type the type of event
event the data associated with this event
    void signalEvent(String type
                     Object event);

    
Returns the event types this event listener is interested in. May return null if the event types are unknown.
    String[] getEventTypes();
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