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Java > Open Source Codes > com > db4o > reflect > Reflector


1 /* Copyright (C) 2004 - 2006 db4objects Inc. http://www.db4o.com
2
3 This file is part of the db4o open source object database.
4
5 db4o is free software; you can redistribute it and/or modify it under
6 the terms of version 2 of the GNU General Public License as published
7 by the Free Software Foundation and as clarified by db4objects' GPL
8 interpretation policy, available at
9 http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
10 Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
11 Suite 350, San Mateo, CA 94403, USA.
12
13 db4o is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17
18 You should have received a copy of the GNU General Public License along
19 with this program; if not, write to the Free Software Foundation, Inc.,
20 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 package com.db4o.reflect;
22
23 import com.db4o.foundation.*;
24
25 /**
26  * root of the reflection implementation API.
27  * <br><br>The open reflection interface is supplied to allow to implement
28  * reflection functionality on JDKs that do not come with the
29  * java.lang.reflect.* package.<br><br>
30  * See the code in com.db4o.samples.reflect for a reference implementation
31  * that uses java.lang.reflect.*.
32  * <br><br>
33  * Use {@link com.db4o.config.Configuration#reflectWith Db4o.configure().reflectWith(IReflect reflector)}
34  * to register the use of your implementation before opening database
35  * files.
36  */
37 public interface Reflector extends DeepClone{
38     
39     
40     /**
41      * returns an IArray object, the equivalent to java.lang.reflect.Array.
42      */
43     public ReflectArray array();
44     
45     /**
46      * specifiy whether parameterized Constructors are supported.
47      * <br><br>The support of Constructors is optional. If Constructors
48      * are not supported, every persistent class needs a public default
49      * constructor with zero parameters.
50      */
51     public boolean constructorCallsSupported();
52     
53     /**
54      * returns an IClass for a Class
55      */
56     public ReflectClass forClass(Class JavaDoc clazz);
57     
58     /**
59      * returns an IClass class reflector for a class name or null
60      * if no such class is found
61      */
62     public ReflectClass forName(String JavaDoc className);
63     
64     /**
65      * returns an IClass for an object or null if the passed object is null.
66      */
67     public ReflectClass forObject(Object JavaDoc a_object);
68     
69     public boolean isCollection(ReflectClass claxx);
70     
71     public void setParent(Reflector reflector);
72     
73 }
74
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