Query problem with Pull From List

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Meng,Li asked Nov 26, '19 Meng,Li edited Nov 28, '19

Query problem with Pull From List

Hi , i upload a small model here for some help.

As you can see in the model, the source1 creates items with type1\type2\type3, each type has it's own processflow numbers. I want to pull two items a time with the same processflow number(range from 1 to 4, not specified but must stay the same) and whose type is 3.But i don't know how to set the Pull From List activity.

And How to implement this through custom code?

Thanks advance for any instruction.

Software Version:

FlexSim 19.2.3

query pf

01.png (21.1 KiB)

02.png (59.0 KiB)

03.png (7.8 KiB)

query-problem-with-pull-from-list.fsm (29.6 KiB)

Answer 1 · 2019-11-26T16:09:43Z

tannerp answered Nov 26, '19 Meng,Li edited Nov 28, '19

Hi @meng L,

After reviewing your question, I think it might be easier to use two Pull from List activities rather than custom coding this. I've created an example that pulls one item, checks its ProcessFlow label, and then pulls a second item with the same label. I think this is easier than writing code that will predict the ProcessFlow label value and pull two of the same.

Here's an example:

The first Pull from List activity pulls based on Type = 3 and assigns the pulled item to a label "pulled".

The next step is not necessary, but it makes this intermediate move make more sense. I use an Assign Labels activity to check the ProcessFlow label of the item that was pulled and I assign it to the token label "PF" (to avoid confusion).

The second Pull from List activity then queries based on Type = 3 and matching the ProcessFlow label to the token's label "PF". Note that the "puller" could be anything that you assign it to be. I just left the default values.

To verify that it's working, I then move the items in pairs into a second queue. Hopefully this helps. Let me know if it works for you.

pull-pairs-list.fsm

first-pull.png (21.8 KiB)

pf-label.png (8.9 KiB)

puller-pf.png (16.7 KiB)

pull-pairs-list.fsm (31.0 KiB)

· 1

Meng,Li commented · Nov 28, 2019 at 03:15 PM

This is the way i can do, thank you tanner @tanner.p

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