01: /*
02: * ====================================================================
03: * JAFFA - Java Application Framework For All
04: *
05: * Copyright (C) 2002 JAFFA Development Group
06: *
07: * This library is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU Lesser General Public
09: * License as published by the Free Software Foundation; either
10: * version 2.1 of the License, or (at your option) any later version.
11: *
12: * This library is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this library; if not, write to the Free Software
19: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20: *
21: * Redistribution and use of this software and associated documentation ("Software"),
22: * with or without modification, are permitted provided that the following conditions are met:
23: * 1. Redistributions of source code must retain copyright statements and notices.
24: * Redistributions must also contain a copy of this document.
25: * 2. Redistributions in binary form must reproduce the above copyright notice,
26: * this list of conditions and the following disclaimer in the documentation
27: * and/or other materials provided with the distribution.
28: * 3. The name "JAFFA" must not be used to endorse or promote products derived from
29: * this Software without prior written permission. For written permission,
30: * please contact mail to: jaffagroup@yahoo.com.
31: * 4. Products derived from this Software may not be called "JAFFA" nor may "JAFFA"
32: * appear in their names without prior written permission.
33: * 5. Due credit should be given to the JAFFA Project (http://jaffa.sourceforge.net).
34: *
35: * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
36: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
37: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
39: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
42: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
43: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
44: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
45: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46: * SUCH DAMAGE.
47: * ====================================================================
48: */
49:
50: package org.jaffa.presentation.portlet.session;
51:
52: import java.util.*;
53: import org.jaffa.presentation.portlet.widgets.model.WidgetModel;
54:
55: /** An instance of this class is used by components to cache the various widget models, across all the FormBeans.
56: */
57: public class WidgetCache {
58: private Map cache = new HashMap();
59:
60: /** Returns a widget model for the input fieldName from the cache.
61: * @param fieldName the field for which the model is to be retrieved.
62: * @return a widget model for the input fieldName from the cache.
63: */
64: public WidgetModel getModel(String fieldName) {
65: return (WidgetModel) cache.get(fieldName);
66: }
67:
68: /** Adds a widget model to the cache.
69: * @param fieldName the field for which the model is to be cached.
70: * @param model the model to be cached.
71: */
72: public void addModel(String fieldName, WidgetModel model) {
73: cache.put(fieldName, model);
74: }
75:
76: /** Removes the widget model for the input fieldName from the cache.
77: * @param fieldName the field for which the model is to be removed.
78: * @return previous widget model associated with specified fieldName, or null if there was no widget model for fieldName.
79: */
80: public WidgetModel removeModel(String fieldName) {
81: return (WidgetModel) cache.remove(fieldName);
82: }
83:
84: /** Removes all widget models from the cache.
85: */
86: public void clear() {
87: cache.clear();
88: }
89:
90: }
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