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Java > Open Source Codes > org > apache > commons > dbutils > handlers > BeanListHandler


1 /*
2  * $Header: /home/cvs/jakarta-commons/dbutils/src/java/org/apache/commons/dbutils/handlers/BeanListHandler.java,v 1.1 2003/11/02 19:15:24 dgraham Exp $
3  * $Revision: 1.1 $
4  * $Date: 2003/11/02 19:15:24 $
5  *
6  * ====================================================================
7  *
8  * The Apache Software License, Version 1.1
9  *
10  * Copyright (c) 2003 The Apache Software Foundation. All rights
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14  * modification, are permitted provided that the following conditions
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26  * any, must include the following acknowledgement:
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28  * Apache Software Foundation (http://www.apache.org/)."
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30  * if and wherever such third-party acknowledgements normally appear.
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32  * 4. The names "The Jakarta Project", "Commons", and "Apache Software
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61
62 package org.apache.commons.dbutils.handlers;
63
64 import java.sql.ResultSet JavaDoc;
65 import java.sql.SQLException JavaDoc;
66
67 import org.apache.commons.dbutils.BasicRowProcessor;
68 import org.apache.commons.dbutils.ResultSetHandler;
69 import org.apache.commons.dbutils.RowProcessor;
70
71 /**
72  * <code>ResultSetHandler</code> implementation that converts a
73  * <code>ResultSet</code> into a <code>List</code> of beans. This class is
74  * thread safe.
75  *
76  * @see ResultSetHandler
77  *
78  * @author Juozas Baliuka
79  * @author David Graham
80  */
81 public class BeanListHandler implements ResultSetHandler {
82
83     /**
84      * The Class of beans produced by this handler.
85      */
86     private Class JavaDoc type = null;
87
88     /**
89      * The RowProcessor implementation to use when converting rows
90      * into beans.
91      */
92     private RowProcessor convert = BasicRowProcessor.instance();
93
94     /**
95      * Creates a new instance of BeanListHandler.
96      *
97      * @param type The Class that objects returned from <code>handle()</code>
98      * are created from.
99      */
100     public BeanListHandler(Class JavaDoc type) {
101         this.type = type;
102     }
103
104     /**
105      * Creates a new instance of BeanListHandler.
106      *
107      * @param type The Class that objects returned from <code>handle()</code>
108      * are created from.
109      * @param convert The <code>RowProcessor</code> implementation
110      * to use when converting rows into beans.
111      */
112     public BeanListHandler(Class JavaDoc type, RowProcessor convert) {
113         this.type = type;
114         this.convert = convert;
115     }
116
117     /**
118      * Convert the <code>ResultSet</code> rows into a <code>List</code> of
119      * beans with the <code>Class</code> given in the constructor.
120      *
121      * @return A <code>List</code> of beans (one for each row), never
122      * <code>null</code>.
123      *
124      * @throws SQLException
125      * @see org.apache.commons.dbutils.ResultSetHandler#handle(java.sql.ResultSet)
126      */
127     public Object JavaDoc handle(ResultSet JavaDoc rs) throws SQLException JavaDoc {
128         return this.convert.toBeanList(rs, type);
129     }
130
131 }
132
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