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/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.activiti.engine.repository;

import org.activiti.engine.FormService;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.runtime.ProcessInstance;

/** An object structure representing an executable process composed of 
 * activities and transitions.
 * 
 * Business processes are often created with graphical editors that store the
 * process definition in certain file format. These files can be added to a
 * {@link Deployment} artifact, such as for example a Business Archive (.bar)
 * file.
 * 
 * At deploy time, the engine will then parse the process definition files to an
 * executable instance of this class, that can be used to start a {@link ProcessInstance}.
 * 
 * @author Tom Baeyens
 * @author Joram Barez
 * @author Daniel Meyer
 */
public interface ProcessDefinition {

  /** unique identifier */
  String getId();

  /** category name which is derived from the targetNamespace attribute in the definitions element */
  String getCategory();
  
  /** label used for display purposes */
  String getName();
  
  /** unique name for all versions this process definitions */
  String getKey();
  
  /** description of this process **/
  String getDescription();
  
  /** version of this process definition */
  int getVersion();

  /** name of {@link RepositoryService#getResourceAsStream(String, String) the resource} 
   * of this process definition. */
  String getResourceName();

  /** The deployment in which this process definition is contained. */
  String getDeploymentId();
  
  /** The resource name in the deployment of the diagram image (if any). */
  String getDiagramResourceName();

  /** Does this process definition has a {@link FormService#getStartFormData(String) start form key}. */
  boolean hasStartFormKey();
  
  /** Does this process definition has a graphical notation defined (such that a diagram can be generated)? */
  boolean hasGraphicalNotation();
  
  /** Returns true if the process definition is in suspended state. */
  boolean isSuspended();
  
  /** The tenant identifier of this process definition */
  String getTenantId();
  
}