99 lines
3.6 KiB
Java
Executable File
99 lines
3.6 KiB
Java
Executable File
/*
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* Copyright (c) 2010 The Broad Institute
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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package org.broadinstitute.sting.utils.classloader;
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import org.reflections.Reflections;
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import org.reflections.scanners.SubTypesScanner;
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import org.reflections.util.ClasspathHelper;
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import org.reflections.util.ConfigurationBuilder;
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import org.slf4j.LoggerFactory;
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import java.util.Set;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* PackageUtils contains some useful methods for package introspection.
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*/
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public class PackageUtils {
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/**
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* A reference into our introspection utility.
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*/
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private static Reflections reflections = null;
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static {
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// Initialize general-purpose source tree reflector.
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reflections = new Reflections( new ConfigurationBuilder()
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.setUrls(ClasspathHelper.getUrlsForCurrentClasspath())
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.setScanners(new SubTypesScanner()));
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}
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/**
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* Private constructor. No instantiating this class!
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*/
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private PackageUtils() {}
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{
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}
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/**
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* Return the classes that implement the specified interface.
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*
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* @param iface the interface which returned classes should implement.
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* @return the list of classes that implement the interface.
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*/
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public static <T> List<Class<? extends T>> getClassesImplementingInterface(Class<T> iface) {
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// Load all classes implementing the given interface, then filter out any class that isn't concrete.
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Set<Class<? extends T>> allTypes = reflections.getSubTypesOf(iface);
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List<Class<? extends T>> concreteTypes = new ArrayList<Class<? extends T>>();
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for( Class<? extends T> type: allTypes ) {
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if( JVMUtils.isConcrete(type) )
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concreteTypes.add(type);
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}
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return concreteTypes;
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}
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/**
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* Return the interface classes that extend the specified interface.
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*
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* @param iface the interface which returned classes should extend.
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* @return the list of interface classes that implement the interface.
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*/
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public static <T> List<Class<? extends T>> getInterfacesExtendingInterface(Class<T> iface) {
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// Load all classes extending the given interface, then filter out any class that is concrete.
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Set<Class<? extends T>> allTypes = reflections.getSubTypesOf(iface);
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List<Class<? extends T>> nonConcreteTypes = new ArrayList<Class<? extends T>>();
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for( Class<? extends T> type: allTypes ) {
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if( !JVMUtils.isConcrete(type) )
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nonConcreteTypes.add(type);
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}
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return nonConcreteTypes;
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}
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}
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