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.Provider; 25 import java.lang.annotation.*; 26 27 /** 28 * DefaultProvider specifies a Provider implementation to act as a default binding 29 * for types annotated with it. 30 */ 31 @Documented 32 @Target(ElementType.TYPE) 33 @Retention(RetentionPolicy.RUNTIME) 34 public @interface DefaultProvider { 35 Class<? extends Provider<?>> value(); 36 37 /** 38 * The default cache policy of this default. 39 * @return The default cache policy for this binding. 40 */ 41 CachePolicy cachePolicy() default CachePolicy.NO_PREFERENCE; 42 43 /** 44 * Whether the default binding should be skipped if its dependencies cannot be satisfied. 45 * @return {@code true} if this default should be skipped if its dependencies cannot be satisfied. 46 */ 47 boolean skipIfUnusable() default false; 48 }