01: /*
02: * argun 1.0
03: * Web 2.0 delivery framework
04: * Copyright (C) 2007 Hammurapi Group
05: *
06: * This program is free software; you can redistribute it and/or
07: * modify it under the terms of the GNU Lesser General Public
08: * License as published by the Free Software Foundation; either
09: * version 2 of the License, or (at your option) any later version.
10: *
11: * This program is distributed in the hope that it will be useful,
12: * but WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * Lesser General Public License for more details.
15: *
16: * You should have received a copy of the GNU Lesser General Public
17: * License along with this library; if not, write to the Free Software
18: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19: *
20: * URL: http://www.hammurapi.biz
21: * e-Mail: support@hammurapi.biz
22: */
23: package biz.hammurapi.web.util;
24:
25: import biz.hammurapi.config.Context;
26:
27: /**
28: * Helper class. Adds prefix to the key and delegates to the chained context.
29: * It is useful for populating multiple objects from a single HTML form. In this case
30: * different object fields are prefixed with different prefixes.
31: * @author Pavel Vlasov
32: *
33: */
34: public class PrefixContext implements Context {
35:
36: private Context master;
37: private String prefix;
38:
39: public PrefixContext(Context master, String prefix) {
40: this .master = master;
41: this .prefix = prefix;
42: }
43:
44: public Object get(String key) {
45: return master.get(prefix + key);
46: }
47:
48: }
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