CommandFactoryLookup.java

/*
 *  Copyright (c) 2011-2015 The original author or authors
 *  ------------------------------------------------------
 *  All rights reserved. This program and the accompanying materials
 *  are made available under the terms of the Eclipse Public License v1.0
 *  and Apache License v2.0 which accompanies this distribution.
 *
 *       The Eclipse Public License is available at
 *       http://www.eclipse.org/legal/epl-v10.html
 *
 *       The Apache License v2.0 is available at
 *       http://www.opensource.org/licenses/apache2.0.php
 *
 *  You may elect to redistribute this code under either of these licenses.
 */
package io.vertx.core.spi.launcher;

import io.vertx.core.impl.launcher.ServiceCommandFactoryLoader;

import java.util.Collection;

/**
 * The interface to implement to look for commands.
 *
 * @see ServiceCommandFactoryLoader
 * @author Clement Escoffier <clement@apache.org>
 */
public interface CommandFactoryLookup {

  /**
   * Looks for command implementation and instantiated them.
   *
   * @return the set of commands, empty if none are found.
   */
  Collection<CommandFactory<?>> lookup();

}