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| package org.drools.event; |
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| import java.io.Serializable; |
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| import java.util.ArrayList; |
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| import java.util.Collections; |
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| import java.util.List; |
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| |
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| import org.drools.FactHandle; |
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| import org.drools.WorkingMemory; |
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| import org.drools.rule.Rule; |
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| import org.drools.spi.Condition; |
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| import org.drools.spi.Tuple; |
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| public class WorkingMemoryEventSupport |
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| implements |
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| Serializable |
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| { |
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| private final List listeners = new ArrayList( ); |
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| private final WorkingMemory workingMemory; |
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| |
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| public WorkingMemoryEventSupport(WorkingMemory workingMemory)
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| { |
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| this.workingMemory = workingMemory;
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| } |
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| |
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| public void addEventListener(WorkingMemoryEventListener listener)
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| { |
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| if ( !this.listeners.contains( listener ) )
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| { |
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| this.listeners.add( listener );
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| } |
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| } |
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| |
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| public void removeEventListener(WorkingMemoryEventListener listener)
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| { |
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| this.listeners.remove( listener );
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| } |
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| |
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| public List getEventListeners()
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| { |
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| return Collections.unmodifiableList( this.listeners );
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| } |
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| |
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| public int size()
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| { |
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| return this.listeners.size( );
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| } |
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| |
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| public boolean isEmpty()
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| { |
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| return this.listeners.isEmpty( );
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| } |
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| |
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| public void fireObjectAsserted(FactHandle handle,
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| Object object) |
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| { |
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| if ( this.listeners.isEmpty( ) )
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| { |
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| return;
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| } |
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| |
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| ObjectAssertedEvent event = new ObjectAssertedEvent( this.workingMemory,
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| handle, |
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| object ); |
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| |
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| for ( int i = 0, size = this.listeners.size( ); i < size; i++ )
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| { |
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| ((WorkingMemoryEventListener) this.listeners.get( i )).objectAsserted( event );
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| } |
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| } |
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| |
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| public void fireObjectModified(FactHandle handle,
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| Object oldObject, |
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| Object object) |
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| { |
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| if ( this.listeners.isEmpty( ) )
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| { |
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| return;
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| } |
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| |
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| ObjectModifiedEvent event = new ObjectModifiedEvent( this.workingMemory,
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| handle, |
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| oldObject, |
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| object ); |
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| |
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| for ( int i = 0, size = this.listeners.size( ); i < size; i++ )
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| { |
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| ((WorkingMemoryEventListener) this.listeners.get( i )).objectModified( event );
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| } |
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| } |
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| |
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| public void fireObjectRetracted(FactHandle handle,
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| Object oldObject) |
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| { |
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| if ( this.listeners.isEmpty( ) )
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| { |
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| return;
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| } |
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| |
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| ObjectRetractedEvent event = new ObjectRetractedEvent( this.workingMemory,
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| handle, |
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| oldObject ); |
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| |
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| for ( int i = 0, size = this.listeners.size( ); i < size; i++ )
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| { |
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| ((WorkingMemoryEventListener) this.listeners.get( i )).objectRetracted( event );
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| } |
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| } |
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| |
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| public void fireConditionTested(Rule rule,
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| Condition condition, |
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| Tuple tuple, |
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| boolean result) |
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| { |
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| if ( this.listeners.isEmpty( ) )
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| { |
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| return;
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| } |
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| |
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| ConditionTestedEvent event = new ConditionTestedEvent( this.workingMemory,
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| rule, |
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| condition, |
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| tuple, |
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| result ); |
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| |
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| for ( int i = 0, size = this.listeners.size( ); i < size; i++ )
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| { |
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| ((WorkingMemoryEventListener) this.listeners.get( i )).conditionTested( event );
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| } |
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| } |
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| public void fireActivationCreated(Rule rule,
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| Tuple tuple) |
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| { |
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| if ( this.listeners.isEmpty( ) )
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| { |
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| return;
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| } |
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| |
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| ActivationCreatedEvent event = new ActivationCreatedEvent( this.workingMemory,
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| rule, |
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| tuple ); |
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| |
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| for ( int i = 0, size = this.listeners.size( ); i < size; i++ )
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| { |
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| ((WorkingMemoryEventListener) this.listeners.get( i )).activationCreated( event );
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| } |
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| } |
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| public void fireActivationCancelled(Rule rule,
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| Tuple tuple) |
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| { |
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| if ( this.listeners.isEmpty( ) )
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| { |
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| return;
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| } |
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| ActivationCancelledEvent event = new ActivationCancelledEvent( this.workingMemory,
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| rule, |
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| tuple ); |
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| for ( int i = 0, size = this.listeners.size( ); i < size; i++ )
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| { |
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| ((WorkingMemoryEventListener) this.listeners.get( i )).activationCancelled( event );
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| } |
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| } |
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| public void fireActivationFired(Rule rule,
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| Tuple tuple) |
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| { |
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| if ( this.listeners.isEmpty( ) )
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| { |
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| return;
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| } |
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| ActivationFiredEvent event = new ActivationFiredEvent( this.workingMemory,
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| rule, |
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| tuple ); |
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| |
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| for ( int i = 0, size = this.listeners.size( ); i < size; i++ )
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| { |
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| ((WorkingMemoryEventListener) this.listeners.get( i )).activationFired( event );
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| } |
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| } |
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| } |