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.util; 21 22 import javax.inject.Provider; 23 24 /** 25 * A provider that can report at runtime the type it will provide. This is mostly to allow instance 26 * and wrapper providers to pass through type information. 27 * 28 * @since 0.6 29 * @author <a href="http://grouplens.org">GroupLens Research</a> 30 */ 31 public interface TypedProvider<T> extends Provider<T> { 32 /** 33 * Get the type of object that will be provided by this provider. Any object returned from 34 * {@link #get()} must be of this type. This is used to help the injector refine its types. 35 * 36 * @return The type of objects that will be provided. 37 */ 38 Class<?> getProvidedType(); 39 }