DirectExecutionService

package org.isisaddons.module.command.dom.direct;

import java.util.Collections;
import java.util.List;

import javax.inject.Inject;

import org.apache.isis.applib.annotation.DomainService;
import org.apache.isis.applib.annotation.NatureOfService;
import org.apache.isis.applib.annotation.Programmatic;
import org.apache.isis.applib.services.command.Command;
import org.apache.isis.applib.services.registry.ServiceRegistry2;
import org.apache.isis.core.runtime.services.background.BackgroundCommandExecution;

import org.isisaddons.module.command.dom.CommandJdo;

/**
 * Utility service to allow previously persisted commands to be executed "in the background", but synchronously and using the caller's credentials.
 * The {@link CommandJdo} is *not* updated; that is the responsibility of the caller.
 */
@DomainService(nature = NatureOfService.DOMAIN)
public class DirectExecutionService {

    @Programmatic
    public void execute(final CommandJdo command) {
        final DirectBackgroundCommandExecution dbce =
                serviceRegistry.injectServicesInto(new DirectBackgroundCommandExecution(command));
        dbce.doExecute(null);
    }

    @Inject
    ServiceRegistry2 serviceRegistry;

    private static class DirectBackgroundCommandExecution extends BackgroundCommandExecution {

        private final Command command;

        public DirectBackgroundCommandExecution(final Command command) {
            this.command = command;
        }

        @Override
        protected List<? extends Command> findBackgroundCommandsToExecute() {
            return Collections.singletonList(command);
        }

        @Override
        public void doExecute(Object context) {
            super.doExecute(context);
        }
    }

}