01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: package org.apache.commons.dbutils.handlers;
18:
19: import java.sql.ResultSet;
20: import java.sql.SQLException;
21: import java.util.ArrayList;
22: import java.util.List;
23:
24: import org.apache.commons.dbutils.ResultSetHandler;
25:
26: /**
27: * Abstract class that simplify development of <code>ResultSetHandler</code>
28: * classes that convert <code>ResultSet</code> into <code>List</code>.
29: *
30: * @see org.apache.commons.dbutils.ResultSetHandler
31: */
32: abstract class GenericListHandler implements ResultSetHandler {
33: /**
34: * Whole <code>ResultSet</code> handler. It produce <code>List</code> as
35: * result. To convert individual rows into Java objects it uses
36: * <code>handleRow(ResultSet)</code> method.
37: *
38: * @see #handleRow(ResultSet)
39: */
40: public Object handle(ResultSet rs) throws SQLException {
41: List rows = new ArrayList();
42: while (rs.next()) {
43: rows.add(this .handleRow(rs));
44: }
45: return rows;
46: }
47:
48: /**
49: * Row handler. Method converts current row into some Java object.
50: *
51: * @param rs <code>ResultSet</code> to process.
52: * @return row processing result
53: * @throws SQLException error occurs
54: */
55: protected abstract Object handleRow(ResultSet rs)
56: throws SQLException;
57: }
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