State.java :  » Rule-Engine » drolls-5.0 » org » drools » Java Open Source

package org.drools;

import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.io.Serializable;

public class State implements Serializable {
    private final PropertyChangeSupport changes = new PropertyChangeSupport( this );

    private String                      state;
    private boolean                     flag;

    public State() {

    }

    public State(final String state) {
        this.state = state;
    }

    public String getState() {
        return this.state;
    }

    public void setState(final String newState) {
        final String oldState = this.state;
        this.state = newState;
        this.changes.firePropertyChange( "state",
                                         oldState,
                                         newState );
    }

    public void addPropertyChangeListener(final PropertyChangeListener l) {
        this.changes.addPropertyChangeListener( l );
    }

    public void removePropertyChangeListener(final PropertyChangeListener l) {
        this.changes.removePropertyChangeListener( l );
    }

    public boolean isFlag() {
        return this.flag;
    }

    public void setFlag(final boolean flag) {
        final boolean old = this.flag;
        this.flag = flag;
        this.changes.firePropertyChange( "flag",
                                         old,
                                         flag );
    }
}