OCLOperators ExecutePS
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==== NOTE: Consider using selfVM.[[OCLOperators PSEval|PSEval]] instead of this for new development ====
selfVM.ExecutePS() is enabled to use the power and speed of the database to find a subset of objects of a certain type in a ViewModel.
selfVM.ExecutePS() is enabled to use the power and speed of the database to find a subset of objects of a certain type in a ViewModel.



Revision as of 08:54, 5 October 2023

NOTE: Consider using selfVM.PSEval instead of this for new development

selfVM.ExecutePS() is enabled to use the power and speed of the database to find a subset of objects of a certain type in a ViewModel.

In the example below, ExecutePS is used to look up License objects with PS (avoiding traversing all existing in memory).

The PS-evaluated expression (translated to SQL and executed in DB) is defined in a ViewModelColumn of its own that is not referenced by any UI.

ExecutePS will look for MaxFetch taggedvalue on the root level column and limit returned values.

2018-07-13 14h41 13.png

See also: How_to_use_the_ExecutePS_function_in_selfVM

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