}
public Void execute(CommandContext commandContext) {
// check that the new process definition is just another version of the same
// process definition that the process instance is using
ExecutionEntityManager executionManager = commandContext.getExecutionEntityManager();
ExecutionEntity processInstance = executionManager.findExecutionById(processInstanceId);
if (processInstance == null) {
throw new ActivitiObjectNotFoundException("No process instance found for id = '" + processInstanceId + "'.", ProcessInstance.class);
} else if (!processInstance.isProcessInstanceType()) {
throw new ActivitiIllegalArgumentException(
"A process instance id is required, but the provided id " +
"'"+processInstanceId+"' " +
"points to a child execution of process instance " +
"'"+processInstance.getProcessInstanceId()+"'. " +
"Please invoke the "+getClass().getSimpleName()+" with a root execution id.");
}
ProcessDefinitionImpl currentProcessDefinitionImpl = processInstance.getProcessDefinition();
DeploymentManager deploymentCache = commandContext
.getProcessEngineConfiguration()
.getDeploymentManager();
ProcessDefinitionEntity currentProcessDefinition;
if (currentProcessDefinitionImpl instanceof ProcessDefinitionEntity) {
currentProcessDefinition = (ProcessDefinitionEntity) currentProcessDefinitionImpl;
} else {
currentProcessDefinition = deploymentCache.findDeployedProcessDefinitionById(currentProcessDefinitionImpl.getId());
}
ProcessDefinitionEntity newProcessDefinition = deploymentCache
.findDeployedProcessDefinitionByKeyAndVersion(currentProcessDefinition.getKey(), processDefinitionVersion);
validateAndSwitchVersionOfExecution(commandContext, processInstance, newProcessDefinition);
// switch the historic process instance to the new process definition version
commandContext.getHistoryManager().recordProcessDefinitionChange(processInstanceId, newProcessDefinition.getId());
// switch all sub-executions of the process instance to the new process definition version
List<ExecutionEntity> childExecutions = executionManager
.findChildExecutionsByProcessInstanceId(processInstanceId);
for (ExecutionEntity executionEntity : childExecutions) {
validateAndSwitchVersionOfExecution(commandContext, executionEntity, newProcessDefinition);
}