Get labels from pushed entries in List

Question

question

Saiprasad A asked Apr 27 2023 at 2:59 AM Jason Lightfoot commented May 10 2023 at 1:51 PM

Get labels from pushed entries in List

Hi,

In my model, i push flowitem(crate) to a list during multiple instances. Between those instances, the labels of the flowitem change.

This change is recorded in the list items as I am allowing duplicate entries with different labels.

Now, I would like to pull an entry from the list and along with it, get the labels stored in the list for that list entry of the item.

The problem that I am currently facing is when I pull from the list and refer its labels, the values of the labels are the latest labels on the pushed flowitem in the model.

I am unable to upload my model due to some constraints but let me know if you need further clarification on my question.

Could you please guide me in doing this?

Software Version:

FlexSim 19.1.2

list pull from list

· 5

Joerg Vogel commented · Apr 27 2023 at 5:40 AM

@Saiprasad A, it is a good practice to upload an example model, if a working model can’t be published. You can strip and falsify data on a working model to a state, where you are allowed to share it.

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Jason Lightfoot ♦♦ commented · Apr 27 2023 at 1:04 PM

Have you listed the labels in the list as fields and unchecked dynamic values?

Are you pulling the oldest entry since you said you have duplicates? You can order by the push time ascending to pull the earliest.

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Saiprasad A Jason Lightfoot ♦♦ commented · Apr 27 2023 at 3:40 PM

Yes @Jason Lightfoot I have unchecked dynamic values so that I have unique instances when the flow item is pushed to the list with its values at different entities.

Actually, I am looking to pull a specific instance instead of the oldest or earliest instance based on the labels saved for that instance

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Jeanette F ♦♦ commented · May 04 2023 at 2:12 AM

Hi @Saiprasad A, was Joerg Vogel's answer helpful? If so, please click the "Accept" button at the bottom of their answer. Or if you still have questions, add a comment and we'll continue the conversation.

If we haven't heard back from you within 3 business days we'll auto-accept an answer, but you can always unaccept and comment back to reopen your question.

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Jeanette F ♦♦ commented · May 09 2023 at 3:24 AM

Hi @Saiprasad A, was Joerg Vogel's answer helpful? If so, please click the "Accept" button at the bottom of their answer. Or if you still have questions, add a comment and we'll continue the conversation.

If we haven't heard back from you within 3 business days we'll auto-accept an answer, but you can always unaccept and comment back to reopen your question.

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Answer 1 · 2023-04-27T05:37:21Z

Joerg Vogel answered Apr 27 2023 at 5:37 AM Jason Lightfoot commented May 10 2023 at 1:51 PM

Once you pull an item reference of a list, you get naturally only this reference and so it represents its current state in a model. BUT you can instead SELECT values of list fields which you can pull from a list. By your pull you know which item you wanted to get this data from and you can compare it with the state in your model.

· 4

Saiprasad A commented · Apr 27 2023 at 4:18 PM

@Joerg Vogel Please correct me if I am wrong.
Are you saying that I should use a statement like this in the pull from list query:
SELECT labelName WHERE label1 == Puller.label1

If yes, is it possible to get the entire row like following
SELECT * WHERE label1 == Puller.label1?

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Joerg Vogel Saiprasad A commented · Apr 27 2023 at 5:14 PM

query_item_label_values_of_list.fsm

Pull with select reduces a value only by item quantity. More SELECT values don't work in a pull activity.

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query-item-label-values-of-list.fsm (23.2 KiB)

Saiprasad A Joerg Vogel commented · May 10 2023 at 4:45 AM

Thank you @Joerg Vogel, the attached model helped me solve my problem.

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