ExecutionContext.java example

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activityinfo-master
package org.activityinfo.legacy.shared.impl;

/*
 * #%L
 * ActivityInfo Server
 * %%
 * Copyright (C) 2009 - 2013 UNICEF
 * %%
 * 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, either version 3 of the 
 * License, or (at your option) any later version.
 * 
 * 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/gpl-3.0.html>.
 * #L%
 */

import com.bedatadriven.rebar.sql.client.SqlTransaction;
import com.google.gwt.user.client.rpc.AsyncCallback;
import org.activityinfo.legacy.shared.command.Command;
import org.activityinfo.legacy.shared.command.result.CommandResult;
import org.activityinfo.model.auth.AuthenticatedUser;

public interface ExecutionContext {

    AuthenticatedUser getUser();

    boolean isRemote();

    /**
     * @return the SqlTransaction associated with the execution of the current
     * command. Each command is executed within its own transaction, but
     * any nested command will share it's parent transaction.
     */
    SqlTransaction getTransaction();

    /**
     * Executes a nested command
     *
     * @param command  the command to execute
     * @param callback callback on the command's completion
     */
    <C extends Command<R>, R extends CommandResult> void execute(C command, AsyncCallback<R> callback);

}