001/* 002 * Copyright 2002-2012 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.type.classreading; 018 019import java.io.IOException; 020 021import org.springframework.core.io.Resource; 022 023/** 024 * Factory interface for {@link MetadataReader} instances. 025 * Allows for caching a MetadataReader per original resource. 026 * 027 * @author Juergen Hoeller 028 * @since 2.5 029 * @see SimpleMetadataReaderFactory 030 * @see CachingMetadataReaderFactory 031 */ 032public interface MetadataReaderFactory { 033 034 /** 035 * Obtain a MetadataReader for the given class name. 036 * @param className the class name (to be resolved to a ".class" file) 037 * @return a holder for the ClassReader instance (never {@code null}) 038 * @throws IOException in case of I/O failure 039 */ 040 MetadataReader getMetadataReader(String className) throws IOException; 041 042 /** 043 * Obtain a MetadataReader for the given resource. 044 * @param resource the resource (pointing to a ".class" file) 045 * @return a holder for the ClassReader instance (never {@code null}) 046 * @throws IOException in case of I/O failure 047 */ 048 MetadataReader getMetadataReader(Resource resource) throws IOException; 049 050}