1 /**
2 * This file Copyright (c) 2010-2018 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.objectfactory;
35
36 /**
37 * ClassFactory implementations are responsible for locating and instantiating classes. Specific implementations
38 * could take care of container-specific hacks, provide support for a scripting language, etc.
39 *
40 * TODO ? an spi-like layer that would allow to have multiple implementations of this and delegate to the first which "accepts" the given parameters ?
41 */
42 public interface ClassFactory {
43
44 <C> Class<C> forName(String className) throws ClassNotFoundException;
45
46 /**
47 * Instantiates the given class with the given parameters. This attempts to find a matching constructor.
48 * For the empty constructor, pass no parameters (or an empty array, or null).
49 * Null arguments are not supported.
50 *
51 * @throws MgnlInstantiationException wrapping possible instantiation exceptions
52 */
53 <T> T newInstance(Class<T> c, Object... params);
54
55 /**
56 * Instantiates the given class with the given parameters, using a constructor that matches the given
57 * <code>argTypes</code> exactly.
58 *
59 * To pass "null" to a single-arg constructor, use newInstance(c, new Object[]{null}) (otherwise the *array* itself will be considered null)
60 *
61 * @throws MgnlInstantiationException wrapping possible instantiation exceptions
62 */
63 <T> T newInstance(Class<T> c, Class<?>[] argTypes, Object... params);
64
65 }