Package org.flowable.engine.impl.cmd

Class SetProcessDefinitionVersionCmd

java.lang.Object

org.flowable.engine.impl.cmd.SetProcessDefinitionVersionCmd

All Implemented Interfaces:

Serializable, Command<Void>

public class SetProcessDefinitionVersionCmd
extends Object
implements Command<Void>, Serializable

Command that changes the process definition version of an existing process instance. Warning: This command will NOT perform any migration magic and simply set the process definition version in the database, assuming that the user knows, what he or she is doing. This is only useful for simple migrations. The new process definition MUST have the exact same activity id to make it still run. Furthermore, activities referenced by sub-executions and jobs that belong to the process instance MUST exist in the new process definition version. The command will fail, if there is already a ProcessInstance or HistoricProcessInstance using the new process definition version and the same business key as the ProcessInstance that is to be migrated. If the process instance is not currently waiting but actively running, then this would be a case for optimistic locking, meaning either the version update or the "real work" wins, i.e., this is a race condition.

Author:

Falko Menge

See Also:

• http://forums.activiti.org/en/viewtopic.php?t=2918
• Serialized Form

Constructor Summary

Constructors

Constructor	Description
SetProcessDefinitionVersionCmd(String processInstanceId, Integer processDefinitionVersion)

Method Summary

Modifier and Type	Method	Description
Void	execute(CommandContext commandContext)
protected void	validateAndSwitchVersionOfExecution(CommandContext commandContext, ExecutionEntity execution, ProcessDefinition newProcessDefinition)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SetProcessDefinitionVersionCmd

public SetProcessDefinitionVersionCmd(String processInstanceId,
 Integer processDefinitionVersion)

Method Details

execute

public Void execute(CommandContext commandContext)

Specified by:

execute in interface Command<Void>

validateAndSwitchVersionOfExecution

protected void validateAndSwitchVersionOfExecution(CommandContext commandContext,
 ExecutionEntity execution,
 ProcessDefinition newProcessDefinition)