org.activiti.engine.impl.cmd
类 SetProcessDefinitionVersionCmd

java.lang.Object
  继承者 org.activiti.engine.impl.cmd.SetProcessDefinitionVersionCmd
所有已实现的接口:
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.

作者:
Falko Menge
另请参见:
http://forums.activiti.org/en/viewtopic.php?t=2918, 序列化表格

构造方法摘要
SetProcessDefinitionVersionCmd(String processInstanceId, Integer processDefinitionVersion)
           
 
方法摘要
 Void execute(CommandContext commandContext)
           
protected  void validateAndSwitchVersionOfExecution(CommandContext commandContext, ExecutionEntity execution, ProcessDefinitionEntity newProcessDefinition)
           
 
从类 java.lang.Object 继承的方法
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

构造方法详细信息

SetProcessDefinitionVersionCmd

public SetProcessDefinitionVersionCmd(String processInstanceId,
                                      Integer processDefinitionVersion)
方法详细信息

execute

public Void execute(CommandContext commandContext)
指定者:
接口 Command<Void> 中的 execute

validateAndSwitchVersionOfExecution

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


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