01: /*
02: * Copyright (c) 1998-2007 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * Resin Open Source is free software; you can redistribute it and/or modify
10: * it under the terms of the GNU General Public License as published by
11: * the Free Software Foundation; either version 2 of the License, or
12: * (at your option) any later version.
13: *
14: * Resin Open Source is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17: * of NON-INFRINGEMENT. See the GNU General Public License for more
18: * details.
19: *
20: * You should have received a copy of the GNU General Public License
21: * along with Resin Open Source; if not, write to the
22: *
23: * Free Software Foundation, Inc.
24: * 59 Temple Place, Suite 330
25: * Boston, MA 02111-1307 USA
26: *
27: * @author Sam
28: */
29:
30: package com.caucho.quercus.lib.spl;
31:
32: import com.caucho.quercus.env.CountDelegate;
33: import com.caucho.quercus.env.Env;
34: import com.caucho.quercus.env.ObjectValue;
35: import com.caucho.quercus.env.Value;
36: import com.caucho.quercus.env.StringBuilderValue;
37: import com.caucho.quercus.env.StringValue;
38:
39: /**
40: * A delegate that intercepts the global count() function and calls count()
41: * method on target objects that implement
42: * the {@link com.caucho.quercus.lib.spl.Countable} interface.
43: */
44: public class CountableDelegate implements CountDelegate {
45: private static final StringValue COUNT_METHOD = new StringBuilderValue(
46: "count");
47:
48: public int count(ObjectValue qThis) {
49: Env env = Env.getInstance();
50:
51: Value count = qThis.callMethod(env, COUNT_METHOD);
52:
53: return count.toInt();
54: }
55: }
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