alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

What this is

This file is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Other links

The source code

/* 
 * $Header: /home/cvs/jakarta-commons/dbutils/src/java/org/apache/commons/dbutils/wrappers/StringTrimmedResultSet.java,v 1.1 2003/11/02 19:15:23 dgraham Exp $
 * $Revision: 1.1 $
 * $Date: 2003/11/02 19:15:23 $
 * 
 * ====================================================================
 * 
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2003 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowledgement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgement may appear in the software itself,
 *    if and wherever such third-party acknowledgements normally appear.
 *
 * 4. The names "The Jakarta Project", "Commons", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 */

package org.apache.commons.dbutils.wrappers;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.sql.ResultSet;

import org.apache.commons.dbutils.ProxyFactory;

/**
 * Wraps a ResultSet to trim strings returned by the
 * getString() and getObject() methods.
 * 
 * 

* Usage Example: * This example shows how to decorate ResultSets so processing continues as * normal but all Strings are trimmed before being returned from the * ResultSet. *

* *
 * ResultSet rs = // somehow get a ResultSet;
 * 
 * // Substitute wrapped ResultSet with additional behavior for real ResultSet
 * rs = StringTrimmedResultSet.wrap(rs);
 * 
 * // Pass wrapped ResultSet to processor
 * List list = BasicRowProcessor.instance().toBeanList(rs);
 * 
* * @author Steven Caswell * @author David Graham * @version $Id: StringTrimmedResultSet.java,v 1.1 2003/11/02 19:15:23 dgraham Exp $ */ public class StringTrimmedResultSet implements InvocationHandler { /** * The factory to create proxies with. */ private static final ProxyFactory factory = ProxyFactory.instance(); /** * Wraps the ResultSet in an instance of this class. This is * equivalent to: *
     * ProxyFactory.instance().createResultSet(new StringTrimmedResultSet(rs));
     * 
* * @param rs The ResultSet to wrap. */ public static ResultSet wrap(ResultSet rs) { return factory.createResultSet(new StringTrimmedResultSet(rs)); } /** * The wrapped result. */ private final ResultSet rs; /** * Constructs a new instance of StringTrimmedResultSet * to wrap the specified ResultSet. */ public StringTrimmedResultSet(ResultSet rs) { super(); this.rs = rs; } /** * Intercept calls to the getString() and * getObject() methods and trim any Strings before they're * returned. * * @throws Throwable * @see java.lang.reflect.InvocationHandler#invoke(java.lang.Object, java.lang.reflect.Method, java.lang.Object[]) */ public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { Object result = method.invoke(this.rs, args); if (method.getName().equals("getObject") || method.getName().equals("getString")) { if (result instanceof String) { result = ((String) result).trim(); } } return result; } }
... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2024 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.