/*
* Copyright 2007-2008 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.impalaframework.module.operation;
import org.impalaframework.module.RootModuleDefinition;
import org.impalaframework.module.modification.ModificationExtractorRegistry;
import org.impalaframework.module.spi.ModificationExtractor;
import org.impalaframework.module.spi.ModificationExtractorType;
import org.impalaframework.module.spi.ModuleStateHolder;
import org.impalaframework.module.spi.TransitionSet;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* {@link ModuleOperation} implementation which encapsulates operation for shutting down entire module
* hierarchy/graph, starting from the root module.
*
* @author Phil Zoio
*/
public class CloseRootModuleOperation extends BaseModuleOperation {
private static final Log logger = LogFactory.getLog(CloseRootModuleOperation.class);
protected CloseRootModuleOperation() {
super();
}
public ModuleOperationResult doExecute(ModuleOperationInput moduleOperationInput) {
ModuleStateHolder moduleStateHolder = getModuleStateHolder();
ModificationExtractorRegistry modificationExtractorRegistry = getModificationExtractorRegistry();
ModificationExtractor calculator = modificationExtractorRegistry
.getModificationExtractor(ModificationExtractorType.STRICT);
RootModuleDefinition rootModuleDefinition = moduleStateHolder.getRootModuleDefinition();
if (rootModuleDefinition != null) {
logger.info("Shutting down application context");
TransitionSet transitions = calculator.getTransitions(rootModuleDefinition, null);
moduleStateHolder.processTransitions(transitions);
return ModuleOperationResult.TRUE;
}
else {
return ModuleOperationResult.FALSE;
}
}
}