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Event capture and querying framework for Java

There is a newer version: 0.4.6

/**
 * Copyright (c) 2016, All Contributors (see CONTRIBUTORS file)
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
package com.eventsourcing;

import lombok.SneakyThrows;
import org.osgi.framework.FrameworkUtil;
import org.osgi.framework.wiring.BundleWiring;

import java.util.Collection;
import java.util.List;
import java.util.function.Function;
import java.util.stream.Collectors;

interface BundleClassScanner {
    default  List> findSubTypesOf(Class classInABundle, Class superclass) {
        BundleWiring wiring = FrameworkUtil.getBundle(classInABundle).adapt(BundleWiring.class);
        Collection names = wiring
                .listResources("/" + getClass().getPackage().getName().replaceAll("\\.", "/") + "/",
                               "*", BundleWiring.LISTRESOURCES_RECURSE);
        return names.stream().map(new Function>() {
            @Override @SneakyThrows
            public Class apply(String name) {
                String n = name.replaceAll("\\.class$", "").replace('/', '.');
                try {
                    return BundleClassScanner.this.getClass().getClassLoader().loadClass(n);
                } catch (ClassNotFoundException e) {
                    return null;
                }
            }
        }).filter(c -> c != null).filter(superclass::isAssignableFrom)
                    .map((Function, Class>) aClass -> (Class) aClass)
                    .collect(Collectors.toList());
    }
}