/*
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* JBoss, Home of Professional Open Source
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* Copyright 2005, JBoss Inc., and individual contributors as indicated
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* by the @authors tag. See the copyright.txt in the distribution for a
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* full listing of individual contributors.
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*
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* This is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this software; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
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*/
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package org.jbpm.api;
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import java.sql.Connection;
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import org.jbpm.api.cmd.Command;
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/** central starting point for all process engine API
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* interactions. This is a thread safe object so it can be
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* kept in a static member field or in JNDI or something
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* similar from which all threads (requests) will fetch the
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* same ProcessEngine object.
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*
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* @author Tom Baeyens
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*/
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public interface ProcessEngine {
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/** the {@link RepositoryService repository service} that provides access
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* to the process repository. */
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RepositoryService getRepositoryService();
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/** the {@link ExecutionService execution service} that provides access
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* to the runtime executions repository. */
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ExecutionService getExecutionService();
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/** the {@link HistoryService history service} that provides access
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* to the history executions repository. */
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HistoryService getHistoryService();
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/** the {@link TaskService task service} that exposes the
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* runtime human task lists. */
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TaskService getTaskService();
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/** the {@link IdentityService identity service} that exposes the
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* user and group operations management operations. */
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IdentityService getIdentityService();
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/** the {@link ManagementService management service} that exposes the
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* management operations to operators that have to keep the jBPM system
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* up and running. */
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ManagementService getManagementService();
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/** retrieve and object defined in the process engine by type */
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<T> T get(Class<T> type);
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/** retrieve and object defined in the process engine by name */
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Object get(String name);
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/** sets the authenticated user's id for the next invocation of
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* a service method in the same thread.
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* This method returns the process engine for convenient method concatenations. */
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ProcessEngine setAuthenticatedUserId(String authenticatedUserId);
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/** sets the hibernate session for the next invocation of
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* a service method in the same thread.
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* The hibernateSession parameter is of type Object to
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* prevent a dependency of the API on hibernate directly.
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* This method returns the process engine for convenient method concatenations. */
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ProcessEngine setHibernateSession(Object hibernateSession);
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/** sets the hibernate session for the next invocation of
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* a service method in the same thread.
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* This method returns the process engine for convenient method concatenations. */
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ProcessEngine setJdbcConnection(Connection jdbcConnection);
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/** perform a user command. that allows users to span a transaction over
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* their own updates, as well as the jbpm operations. */
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<T> T execute(Command<T> command);
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/** clean shutdown of the engine. */
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void close();
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}
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