fixedprovider.java

来自「个人理财系统-fileutil的使用 是你的好帮手」· Java 代码 · 共 53 行

/*
 * Created on Jul 10, 2003
 *
 * To change the template for this generated file go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
package ar.com.koalas.providers;

import java.lang.reflect.InvocationTargetException;
import java.util.Collection;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Map;

import org.apache.commons.beanutils.BeanUtils;

/**
 * @author DZ156H
 *
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
public class FixedProvider extends ProviderImpl {
	private Map localIndex;
	
	public Collection getCollection() {
		return this.getFixedBeans();
	}
	
	public Object getDescription(Object id) throws ProviderException {
		try {
			this.reIndex();
			return this.localIndex.get( id );	
		} catch (Exception e) {
			throw new ProviderException( e );
		}
	}

	private void reIndex() throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
		// Ya fue inicializado.
		if( this.localIndex != null ){
			return ;
		}
		
		this.localIndex = new Hashtable();
		Iterator itBeans= this.getFixedBeans().iterator();
		while( itBeans.hasNext() ){
			Object bean = itBeans.next();
			this.localIndex.put( BeanUtils.getProperty(bean, this.getKeyName() ), BeanUtils.getProperty(bean, this.getDescription() ) );
		}
	}
}