CheRefactoringParticipantsRegistry.java

/*******************************************************************************
 * Copyright (c) 2012-2016 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.ltk.core.refactoring.participants;

import org.eclipse.ltk.core.refactoring.participants.RefactoringParticipant;

import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

/**
 * @author Evgen Vidolob
 */
public class CheRefactoringParticipantsRegistry {

    private static Map<String, Set<Class<? extends RefactoringParticipant>>> registry = new HashMap<>();

    public static void registerParticipant(String id, Class<? extends RefactoringParticipant> clazz) {
        if(!registry.containsKey(id)) {
            registry.put(id, new HashSet<>());
        }
        registry.get(id).add(clazz);
    }

    public static Set<Class<? extends RefactoringParticipant>> getParticipantsFor(String id) {
        Set<Class<? extends RefactoringParticipant>> classes = registry.get(id);
        if(classes == null) {
            classes = new HashSet<>(0);
        }
        return classes;
    }
}