001/* 002 * Copyright 2002-2017 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.aop.aspectj; 018 019import org.springframework.core.Ordered; 020import org.springframework.lang.Nullable; 021 022/** 023 * Interface implemented to provide an instance of an AspectJ aspect. 024 * Decouples from Spring's bean factory. 025 * 026 * <p>Extends the {@link org.springframework.core.Ordered} interface 027 * to express an order value for the underlying aspect in a chain. 028 * 029 * @author Rod Johnson 030 * @author Juergen Hoeller 031 * @since 2.0 032 * @see org.springframework.beans.factory.BeanFactory#getBean 033 */ 034public interface AspectInstanceFactory extends Ordered { 035 036 /** 037 * Create an instance of this factory's aspect. 038 * @return the aspect instance (never {@code null}) 039 */ 040 Object getAspectInstance(); 041 042 /** 043 * Expose the aspect class loader that this factory uses. 044 * @return the aspect class loader (or {@code null} for the bootstrap loader) 045 * @see org.springframework.util.ClassUtils#getDefaultClassLoader() 046 */ 047 @Nullable 048 ClassLoader getAspectClassLoader(); 049 050}