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.solver; 21 22 import org.grouplens.grapht.ResolutionException; 23 24 import javax.annotation.Nullable; 25 26 /** 27 * Locate bindings for an injection point. 28 * 29 * @author <a href="http://grouplens.org">GroupLens Research</a> 30 */ 31 public interface BindingFunction { 32 /** 33 * Find the applicable binding, if any, for a desire in a particular context. 34 * 35 * @param context The context. 36 * @param desire The desire. 37 * @return The result of binding {@code desire}, or {@code null} if there is no binding. 38 * @throws ResolutionException If there is an error (such as ambiguous bindings). 39 */ 40 @Nullable 41 BindingResult bind(InjectionContext context, DesireChain desire) throws ResolutionException; 42 }