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/*
* Copyright 2002-2015 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.test.context;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.lang.Nullable;
import org.springframework.test.annotation.DirtiesContext.HierarchyMode;
/**
* A {@code CacheAwareContextLoaderDelegate} is responsible for {@linkplain
* #loadContext loading} and {@linkplain #closeContext closing} application
* contexts, interacting transparently with a
* {@link org.springframework.test.context.cache.ContextCache ContextCache}
* behind the scenes.
*
* Note: {@code CacheAwareContextLoaderDelegate} does not extend the
* {@link ContextLoader} or {@link SmartContextLoader} interface.
*
* @author Sam Brannen
* @since 3.2.2
*/
public interface CacheAwareContextLoaderDelegate {
/**
* Load the {@linkplain ApplicationContext application context} for the supplied
* {@link MergedContextConfiguration} by delegating to the {@link ContextLoader}
* configured in the given {@code MergedContextConfiguration}.
*
If the context is present in the {@code ContextCache} it will simply
* be returned; otherwise, it will be loaded, stored in the cache, and returned.
*
The cache statistics should be logged by invoking
* {@link org.springframework.test.context.cache.ContextCache#logStatistics()}.
* @param mergedContextConfiguration the merged context configuration to use
* to load the application context; never {@code null}
* @return the application context
* @throws IllegalStateException if an error occurs while retrieving or loading
* the application context
*/
ApplicationContext loadContext(MergedContextConfiguration mergedContextConfiguration);
/**
* Remove the {@linkplain ApplicationContext application context} for the
* supplied {@link MergedContextConfiguration} from the {@code ContextCache}
* and {@linkplain ConfigurableApplicationContext#close() close} it if it is
* an instance of {@link ConfigurableApplicationContext}.
*
The semantics of the supplied {@code HierarchyMode} must be honored when
* removing the context from the cache. See the Javadoc for {@link HierarchyMode}
* for details.
*
Generally speaking, this method should only be called if the state of
* a singleton bean has been changed (potentially affecting future interaction
* with the context) or if the context needs to be prematurely removed from
* the cache.
* @param mergedContextConfiguration the merged context configuration for the
* application context to close; never {@code null}
* @param hierarchyMode the hierarchy mode; may be {@code null} if the context
* is not part of a hierarchy
* @since 4.1
*/
void closeContext(MergedContextConfiguration mergedContextConfiguration, @Nullable HierarchyMode hierarchyMode);
}