I want to use:
| StatefulSession ss = myRuleBase.newStatefulSession();
| ss.setGlobal("conversationBean", this);
| ...
| ss.insert(entity, true);
| ...
|
The true flag means the obj I inserted into the ss rule session is a dynamic
object, the stateful rule session is aware of the changes of the properties of
the entity. But according to Drools manual section 1.6.4.5, I must write code
like this in my entity beans:
| private final PropertyChangeSupport changes = new PropertyChangeSupport(
this );
| ...
| public void addPropertyChangeListener(final PropertyChangeListener l) {
| this.changes.addPropertyChangeListener( l );
| }
|
| public void removePropertyChangeListener(final PropertyChangeListener l) {
| this.changes.removePropertyChangeListener( l );
| }
| ...
|
| public void setState(final String newState) {
| String oldState = this.state;
| this.state = newState;
| this.changes.firePropertyChange( "state",
| oldState,
| newState );
| }
|
I have a feeling that frameworks like hibernate or seam or the ejb 3 container
have already some property change listeners employed for entity beans....the
property change listeners do already exist, how can I make Drools share the
property change listeners? Thanks!
Regards,
Ellen
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