wordindex.java

经典体系风格实现之事件系统

package kwic.es;

import java.util.Observable;
import java.util.Observer;
import java.util.ArrayList;

import kwic.es.LineStorageChangeEvent;

public class WordIndex implements Observer {


	public void update(Observable observable, Object arg) {
		LineStorageWrapper shifts = (LineStorageWrapper) observable;
		LineStorageChangeEvent event = (LineStorageChangeEvent) arg;
		switch (event.getType()) 
		{
		    case LineStorageChangeEvent.ADD:
		  
		//    shifts.wordsIndex();
		
			break;
		
	    	case LineStorageChangeEvent.DELETE:
	    	
	    //	shifts.wordsIndex();

			break;
	   
	    	default:
		
			break;

		}
	}

}
	// ----------------------------------------------------------------------
	/**
	 * Adds a new line to this line storage wrapper. The line is added at the
	 * end of the storage. After adding the line all observers of this object
	 * are notified about the change.
	 * 
	 * @param words
	 *            new line to be added
	 * @see #deleteLine
	 * @see #insertLine
	 * @see #getLine
	 */