1 /* 2 * Grapht, an open source dependency injector. 3 * Copyright 2014-2015 various contributors (see CONTRIBUTORS.txt) 4 * Copyright 2010-2014 Regents of the University of Minnesota 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU Lesser General Public License as 8 * published by the Free Software Foundation; either version 2.1 of the 9 * License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 13 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more 14 * details. 15 * 16 * You should have received a copy of the GNU General Public License along with 17 * this program; if not, write to the Free Software Foundation, Inc., 51 18 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 19 */ 20 package org.grouplens.grapht.annotation; 21 22 import org.grouplens.grapht.CachePolicy; 23 24 import javax.inject.Qualifier; 25 import java.lang.annotation.*; 26 27 /** 28 * A default implementation for a {@link Qualifier}. 29 */ 30 @Retention(RetentionPolicy.RUNTIME) 31 @Target({ ElementType.TYPE, ElementType.ANNOTATION_TYPE }) 32 @Documented 33 public @interface DefaultImplementation { 34 /** 35 * The implementation class. 36 * @return The implementation class. 37 */ 38 Class<?> value(); 39 40 /** 41 * The default cache policy of this default. 42 * @return The default cache policy for this binding. 43 */ 44 CachePolicy cachePolicy() default CachePolicy.NO_PREFERENCE; 45 46 /** 47 * Whether the default binding should be skipped if its dependencies cannot be satisfied. 48 * @return {@code true} if this default should be skipped if its dependencies cannot be satisfied. 49 */ 50 boolean skipIfUnusable() default false; 51 }