If state has multiple actions, can the second action use first action output data?

[elim19]

In https://github.com/serverlessworkflow/specification/blob/main/specification.md#using-multiple-data-filters, I am not seeing such examples

[tsurdilo]

Hi, are you asking for an example of this to be added to https://github.com/serverlessworkflow/specification/tree/main/examples ?

[elim19]

In my opinion，if you want to pass data from first action to second, we should do:

• set actionMode property to sequence
• each action write the output to stateData, use useResults & toStateData property.
• the follow action could use the result write by previous action

@lsytj0413 , it is a workaround to use state as temporary storage, is it reasonable? because we may not want others to see these temporary data in states, then we need to use filter to clear these data in the state

[lsytj0413]

@lsytj0413 , it is a workaround to use state as temporary storage, is it reasonable? because we may not want others to see these temporary data in states, then we need to use filter to clear these data in the state

I'm not clearly why you say use state as temporary storage and need to use filter to clear these data in the state, in one WorkflowInstance, we need StateData to pass data between each state and action, so it will persistent in runtime implement.

[elim19]

@lsytj0413 , it is a workaround to use state as temporary storage, is it reasonable? because we may not want others to see these temporary data in states, then we need to use filter to clear these data in the state

I'm not clearly why you say use state as temporary storage and need to use filter to clear these data in the state, in one WorkflowInstance, we need StateData to pass data between each state and action, so it will persistent in runtime implement.

@lsytj0413 , I am saying that because some data are stored in state just to pass to another action, not to another state, for example,
stateA has two key: actionTmpData and stateTmpData.
actionTmpData is the data to pass to other actions, stateTmpData is the data to pass to other states.
So when stateA transit to stateB, only stateTmpData is necessary, actionTmpData is not longer used

[lsytj0413]

@lsytj0413 , I am saying that because some data are stored in state just to pass to another action, not to another state, for example, stateA has two key: actionTmpData and stateTmpData. actionTmpData is the data to pass to other actions, stateTmpData is the data to pass to other states. So when stateA transit to stateB, only stateTmpData is necessary, actionTmpData is not longer used

As this moment you can use stateDataFilter.output to discard actionTmpData before transit to stateB.

[tsurdilo]

yes as @lsytj0413 said :)
action data filter has also useResults flag: https://github.com/serverlessworkflow/specification/blob/main/specification.md#action-data-filters
that could be used if you want to disregard the results of an action
we could improve bit on this front..will think about it