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package org.glassfish.api.admin;

import java.lang.annotation.Annotation;

import org.glassfish.api.ActionReport;
import org.glassfish.api.admin.AdminCommand;
import org.glassfish.api.admin.AdminCommandContext;
import org.glassfish.api.admin.Job;
import org.jvnet.hk2.annotations.Contract;

/**
 * Interface for defining aspects for AdminCommands. This is used with the 
 * CommandAspect annotation to implement an annotation that can be used to
 * add functionality around commands.  See the @Async annotation for
 * an example of how this is used.
 *
 * See empty CommandAspectBase implementation to extend.
 * 
 * @author andriy.zhdanov
 *
 * @param  aspect annotation.
 */
@Contract
public interface CommandAspectImpl {

    /**
     * Execute when command is just completely initialized, i..e
     * injected with parameters.
     */
    void init(T ann, AdminCommand command, AdminCommandContext context, Job instance);

    /**
     * Execute when command is finished successfully or not.
     */
    void done(T ann, AdminCommand command, Job instance);
    
    /**
     * This methods can be used to wrap generic functionality around command execute.
     */
    AdminCommand createWrapper(T ann, CommandModel model,
            AdminCommand command, ActionReport report);
}