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package edu.stanford.protege.webprotege.dispatch;

import edu.stanford.protege.webprotege.common.Request;
import edu.stanford.protege.webprotege.common.Response;

import javax.annotation.Nonnull;
import javax.annotation.concurrent.ThreadSafe;

/**
 * Author: Matthew Horridge

 * Stanford University

 * Bio-Medical Informatics Research Group

 * Date: 19/02/2013
 */
@ThreadSafe
public interface ActionHandlerRegistry {

    /**
     * Gets an action handler for the given action.
     * @param action The action.  Not {@code null}.
     * @param  The action type.
     * @param  The result type.
     * @return An {@link ActionHandler} that can handle the specified action.  Not {@code null}.
     * @throws ActionHandlerNotFoundException if no {@link ActionHandler} was registered with this registry for the
     * specified {@link Action}.
     * @throws NullPointerException if {@code action} is {@code null}.
     */
    @Nonnull
    , R extends Response> ActionHandler getActionHandler(A action) throws ActionHandlerNotFoundException;

}