001/* 002 * Copyright 2002-2016 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.core.convert.converter; 018 019/** 020 * A factory for "ranged" converters that can convert objects from S to subtypes of R. 021 * 022 * <p>Implementations may additionally implement {@link ConditionalConverter}. 023 * 024 * @author Keith Donald 025 * @since 3.0 026 * @see ConditionalConverter 027 * @param <S> the source type converters created by this factory can convert from 028 * @param <R> the target range (or base) type converters created by this factory can convert to; 029 * for example {@link Number} for a set of number subtypes. 030 */ 031public interface ConverterFactory<S, R> { 032 033 /** 034 * Get the converter to convert from S to target type T, where T is also an instance of R. 035 * @param <T> the target type 036 * @param targetType the target type to convert to 037 * @return a converter from S to T 038 */ 039 <T extends R> Converter<S, T> getConverter(Class<T> targetType); 040 041}