1 /**
2 *
3 * Copyright 2003-2004 The Apache Software Foundation
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * 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.geronimo.common.propertyeditor;
18
19 import java.beans.PropertyEditorSupport;
20 import java.util.Collection;
21 import java.util.StringTokenizer;
22
23 /**
24 * An abstract collection editor. Subclasses should provide the correct type of collection from
25 * the createCollection method and should override setValue to check the type of the value.
26 *
27 * @version $Rev: 356022 $ $Date: 2005-12-11 12:58:34 -0800 (Sun, 11 Dec 2005) $
28 */
29 public abstract class AbstractCollectionEditor extends PropertyEditorSupport {
30
31 /**
32 * Concrete subclasses should implement this method to create the correct type of collection.
33 *
34 * @return an empty instance of the type of collection the subclass edits.
35 */
36 protected abstract Collection createCollection();
37
38 public void setAsText(String text) {
39 if (text == null) {
40 setValue(null);
41 } else {
42 if (text.startsWith("[")) {
43 text = text.substring(1);
44 }
45 if (text.endsWith("]")) {
46 text = text.substring(0, text.length() - 1);
47 }
48 Collection collection = createCollection();
49 StringTokenizer stok = new StringTokenizer(text, ",");
50
51 while (stok.hasMoreTokens()) {
52 collection.add(stok.nextToken().trim());
53 }
54
55 setValue(collection);
56 }
57 }
58 }