1 /*
2 * EL4J, the Extension Library for the J2EE, adds incremental enhancements to
3 * the spring framework, http://el4j.sf.net
4 * Copyright (C) 2008 by ELCA Informatique SA, Av. de la Harpe 22-24,
5 * 1000 Lausanne, Switzerland, http://www.elca.ch
6 *
7 * EL4J is published under the GNU Lesser General Public License (LGPL)
8 * Version 2.1. See http://www.gnu.org/licenses/
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU Lesser General Public License for more details.
14 *
15 * For alternative licensing, please contact info@elca.ch
16 */
17 package ch.elca.el4j.core.metadata;
18
19 import java.lang.annotation.ElementType;
20 import java.lang.annotation.Retention;
21 import java.lang.annotation.RetentionPolicy;
22 import java.lang.annotation.Target;
23
24 /**
25 * Annotation describing the property class to instantiate if the current value of a
26 * property is null but we want to create one.
27 * <p>
28 * The class passed as parameter <b>must</b> be instantiable and have a zero-argument constructor.
29 * This class is useful if the return type of the property is an interface and you want to declare
30 * a default implementation.
31 *
32 * @svnLink $Revision: 3878 $;$Date: 2009-08-04 15:06:35 +0200 (Di, 04. Aug 2009) $;$Author: swismer $;$URL: https://el4j.svn.sourceforge.net/svnroot/el4j/branches/el4j_3_1/el4j/framework/modules/core/src/main/java/ch/elca/el4j/core/metadata/InstanceClass.java $
33 *
34 * @author David Bernhard (DBD)
35 */
36 @Target(ElementType.METHOD)
37 @Retention(RetentionPolicy.RUNTIME)
38 public @interface InstanceClass {
39 /** The class to use. */
40 public Class<? > instanceClass();
41
42 }