com.eucalyptus.simpleworkflow.common.client.WorkflowRegistry.java Source code

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Here is the source code for com.eucalyptus.simpleworkflow.common.client.WorkflowRegistry.java

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/*************************************************************************
 * Copyright 2009-2014 Eucalyptus Systems, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 3 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see http://www.gnu.org/licenses/.
 *
 * Please contact Eucalyptus Systems, Inc., 6755 Hollister Ave., Goleta
 * CA 93117, USA or visit http://www.eucalyptus.com/licenses/ if you need
 * additional information or have any questions.
 ************************************************************************/
package com.eucalyptus.simpleworkflow.common.client;

import javax.annotation.Nonnull;
import com.eucalyptus.component.ComponentId;
import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.ListMultimap;
import com.google.common.collect.Multimap;
import com.google.common.collect.Multimaps;

/**
 *
 */
public class WorkflowRegistry {

    private static final ListMultimap<Class<? extends ComponentId>, Class<?>> workflowClasses = Multimaps
            .synchronizedListMultimap(ArrayListMultimap.<Class<? extends ComponentId>, Class<?>>create());

    private static final ListMultimap<Class<? extends ComponentId>, Class<?>> activityClasses = Multimaps
            .synchronizedListMultimap(ArrayListMultimap.<Class<? extends ComponentId>, Class<?>>create());

    static void registerWorkflow(@Nonnull final Class<? extends ComponentId> componentIdClass,
            @Nonnull final Class<?> implementationClass) {
        register(workflowClasses, componentIdClass, implementationClass);
    }

    static void registerActivities(@Nonnull final Class<? extends ComponentId> componentIdClass,
            @Nonnull final Class<?> implementationClass) {
        register(activityClasses, componentIdClass, implementationClass);
    }

    @Nonnull
    static Iterable<Class<?>> lookupWorkflows(final Class<? extends ComponentId> componentIdClass) {
        return lookup(workflowClasses, componentIdClass);
    }

    @Nonnull
    static Iterable<Class<?>> lookupActivities(final Class<? extends ComponentId> componentIdClass) {
        return lookup(activityClasses, componentIdClass);
    }

    private static void register(final Multimap<Class<? extends ComponentId>, Class<?>> registry,
            final Class<? extends ComponentId> componentIdClass, final Class<?> implementationClass) {
        registry.put(componentIdClass, implementationClass);
    }

    private static Iterable<Class<?>> lookup(final Multimap<Class<? extends ComponentId>, Class<?>> registry,
            final Class<? extends ComponentId> componentIdClass) {
        return registry.get(componentIdClass);
    }
}