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Java > Open Source Codes > com > caucho > quercus > function > ByteObjectMarshal


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * 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 Scott Ferguson
28  */
29
30 package com.caucho.quercus.function;
31
32 import com.caucho.quercus.env.Env;
33 import com.caucho.quercus.env.LongValue;
34 import com.caucho.quercus.env.Value;
35 import com.caucho.quercus.expr.Expr;
36
37 public class ByteObjectMarshal extends Marshal
38 {
39   public static final Marshal MARSHAL = new ByteObjectMarshal();
40   
41   public Object JavaDoc marshal(Env env, Expr expr, Class JavaDoc expectedClass)
42   {
43     return new Byte JavaDoc((byte) expr.evalLong(env));
44   }
45
46   public boolean isReadOnly()
47   {
48     return true;
49   }
50
51   @Override JavaDoc
52   public Object JavaDoc marshal(Env env, Value value, Class JavaDoc expectedClass)
53   {
54     return value.toJavaByte();
55   }
56
57   public Value unmarshal(Env env, Object JavaDoc value)
58   {
59     if (value == null)
60       return LongValue.ZERO;
61     else
62       return new LongValue(((Number JavaDoc) value).longValue());
63   }
64 }
65
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