Examples of java.beans.PropertyChangeEvent

java.beans.PropertyChangeEvent
A "PropertyChange" event gets delivered whenever a bean changes a "bound" or "constrained" property. A PropertyChangeEvent object is sent as an argument to the PropertyChangeListener and VetoableChangeListener methods.
Normally PropertyChangeEvents are accompanied by the name and the old and new value of the changed property. If the new value is a primitive type (such as int or boolean) it must be wrapped as the corresponding java.lang.* Object type (such as Integer or Boolean).
Null values may be provided for the old and the new values if their true values are not known.
An event source may send a null object as the name to indicate that an arbitrary set of if its properties have changed. In this case the old and new values should also be null.

    } else if (!areEqualChars(oldValue, newValue)) {
      setChangedPropertyValue(propertyIndex, intercept, oldValue);
    } else {
      return null;
    }
    return (pcs == null) ? null: new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
  }

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    } else if (!areEqualBytes(oldValue, newValue)) {
      setChangedPropertyValue(propertyIndex, intercept, oldValue);
    } else {
      return null;
    }
    return (pcs == null) ? null : new PropertyChangeEvent(owner, getProperty(propertyIndex), oldValue, newValue);
  }

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    {
        for (int i = array.length; i-- != 0;) {
            Object obj = array[i];
            if (obj instanceof PropertyChangeListener) {
                PropertyChangeListener l = (PropertyChangeListener)obj;
                l.propertyChange(new PropertyChangeEvent(
                    this, property, oldValue, newValue));
            }
    }
    }

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    /* (non-Javadoc)
     * @see org.drools.kproject.KProject#setKBasesPath(java.lang.String)
     */
    public KProject setKBasesPath(String kprojectPath) {
        if ( listener != null ) {
            listener.propertyChange( new PropertyChangeEvent( this, "kBasesPath", this.kBasesPath, kBasesPath ) );     
        }
        this.kBasesPath = kprojectPath;
        return this;
    }

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    /* (non-Javadoc)
     * @see org.drools.kproject.KProject#setKBases(java.util.Map)
     */
    private void setKBases(Map<String, KBase> kBases) {        
        if ( listener != null ) {
            listener.propertyChange( new PropertyChangeEvent( this, "kBases", this.kBases, kBases ) );
            
            for ( KBase kbase : kBases.values() ) {
                // make sure the listener is set for each kbase
                kbase.setListener( listener );
            }

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    /* (non-Javadoc)
     * @see org.drools.kproject.KSession#setNamespace(java.lang.String)
     */
    public KSession setNamespace(String namespace) {
        if ( listener != null ) {
            listener.propertyChange( new PropertyChangeEvent( this, "namespace", this.namespace, namespace ) );
        }
        this.namespace = namespace;
        return this;
    }

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    /* (non-Javadoc)
     * @see org.drools.kproject.KSession#setName(java.lang.String)
     */
    public KSession setName(String name) {
        if ( listener != null ) {
            listener.propertyChange( new PropertyChangeEvent( this, "name", this.name, name ) );
        }
        this.name = name;
        return this;
    }

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    /* (non-Javadoc)
     * @see org.drools.kproject.KSession#setType(java.lang.String)
     */
    public KSession setType(String type) {
        if ( listener != null ) {
            listener.propertyChange( new PropertyChangeEvent( this, "type", this.type, type ) );
        }
        this.type = type;
        return this;
    }

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    /* (non-Javadoc)
     * @see org.drools.kproject.KSession#setClockType(org.drools.runtime.conf.ClockTypeOption)
     */
    public KSession setClockType(ClockTypeOption clockType) {
        if ( listener != null ) {
            listener.propertyChange( new PropertyChangeEvent( this, "clockType", this.clockType, clockType ) );
        }
        this.clockType = clockType;
        return this;
    }

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    /* (non-Javadoc)
     * @see org.drools.kproject.KSession#setAnnotations(java.util.List)
     */
    public KSession setAnnotations(List<String> annotations) {
        if ( listener != null ) {
            listener.propertyChange( new PropertyChangeEvent( this, "annotations", this.annotations, annotations ) );
        }
        this.annotations = annotations;
        return this;
    }

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