001/* 002 * Copyright 2002-2020 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.context.annotation; 018 019import org.springframework.beans.factory.config.ConfigurableListableBeanFactory; 020import org.springframework.beans.factory.support.BeanDefinitionRegistry; 021import org.springframework.core.env.Environment; 022import org.springframework.core.io.ResourceLoader; 023import org.springframework.lang.Nullable; 024 025/** 026 * Context information for use by {@link Condition} implementations. 027 * 028 * @author Phillip Webb 029 * @author Juergen Hoeller 030 * @since 4.0 031 */ 032public interface ConditionContext { 033 034 /** 035 * Return the {@link BeanDefinitionRegistry} that will hold the bean definition 036 * should the condition match. 037 * @throws IllegalStateException if no registry is available (which is unusual: 038 * only the case with a plain {@link ClassPathScanningCandidateComponentProvider}) 039 */ 040 BeanDefinitionRegistry getRegistry(); 041 042 /** 043 * Return the {@link ConfigurableListableBeanFactory} that will hold the bean 044 * definition should the condition match, or {@code null} if the bean factory is 045 * not available (or not downcastable to {@code ConfigurableListableBeanFactory}). 046 */ 047 @Nullable 048 ConfigurableListableBeanFactory getBeanFactory(); 049 050 /** 051 * Return the {@link Environment} for which the current application is running. 052 */ 053 Environment getEnvironment(); 054 055 /** 056 * Return the {@link ResourceLoader} currently being used. 057 */ 058 ResourceLoader getResourceLoader(); 059 060 /** 061 * Return the {@link ClassLoader} that should be used to load additional classes 062 * (only {@code null} if even the system ClassLoader isn't accessible). 063 * @see org.springframework.util.ClassUtils#forName(String, ClassLoader) 064 */ 065 @Nullable 066 ClassLoader getClassLoader(); 067 068}