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


1 /*
2  * $Header: /home/cvs/jakarta-commons/dbutils/src/java/org/apache/commons/dbutils/handlers/ArrayHandler.java,v 1.1 2003/11/02 19:15:24 dgraham Exp $
3  * $Revision: 1.1 $
4  * $Date: 2003/11/02 19:15:24 $
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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 an <code>Object[]</code>. This class is
74  * thread safe.
75  *
76  * @see ResultSetHandler
77  *
78  * @author Juozas Baliuka
79  * @author David Graham
80  */
81 public class ArrayHandler implements ResultSetHandler {
82
83     /**
84      * The RowProcessor implementation to use when converting rows
85      * into arrays.
86      */
87     private RowProcessor convert = BasicRowProcessor.instance();
88
89     /**
90      * Creates a new instance of ArrayHandler using a
91      * <code>BasicRowProcessor</code> for conversion.
92      */
93     public ArrayHandler() {
94         super();
95     }
96
97     /**
98      * Creates a new instance of ArrayHandler.
99      *
100      * @param convert The <code>RowProcessor</code> implementation
101      * to use when converting rows into arrays.
102      */
103     public ArrayHandler(RowProcessor convert) {
104         super();
105         this.convert = convert;
106     }
107
108     /**
109      * Places the column values from the first row in an <code>Object[]</code>.
110      *
111      * @return An Object[] or <code>null</code> if there are no rows in the
112      * <code>ResultSet</code>.
113      *
114      * @throws SQLException
115      * @see org.apache.commons.dbutils.ResultSetHandler#handle(java.sql.ResultSet)
116      */
117     public Object JavaDoc handle(ResultSet JavaDoc rs) throws SQLException JavaDoc {
118         return rs.next() ? this.convert.toArray(rs) : null;
119     }
120
121 }
122
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