/*
* Copyright 2011-2012 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.shell.plugin;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import org.springframework.beans.factory.BeanFactoryUtils;
import org.springframework.context.ApplicationContext;
import org.springframework.core.annotation.AnnotationAwareOrderComparator;
/**
* Utilities dealing with shell plugins.
*
* @author Erwin Vervaet
*/
public final class PluginUtils {
private PluginUtils() {
}
/**
* Returns the highest priority {@link PluginProvider} of specified type defined in
* given application context.
*
* @since 1.0.1
*/
public static <T extends NamedProvider> T getHighestPriorityProvider(ApplicationContext applicationContext, Class<T> t) {
Map<String, T> providers = BeanFactoryUtils.beansOfTypeIncludingAncestors(applicationContext, t);
List<T> sortedProviders = new ArrayList<T>(providers.values());
Collections.sort(sortedProviders, new AnnotationAwareOrderComparator());
T highestPriorityProvider = sortedProviders.get(0);
return highestPriorityProvider;
}
}