Page 805 - ExtendSim User Guide
P. 805

• ArecordreceivesaTrueranking
• Or, there are no records left to evaluate
For a spawned item
• Highestspawnrecordrank.Eachrecord’srankvalueiscalculatedbytheequation.Theone with the highest rank is chosen.
• Lowestspawnrecordrank.Eachrecord’srankvalueiscalculatedbytheequation.Theone with the lowest rank is chosen.
• FirstTruespawnrecordrank.Theequationwillbecalculatedonceforeachrecorduntil either:
• ArecordreceivesaTrueranking
• Or, there are no records left to evaluate
• Truespawnrecordranks.Anyrecordreceivingaspawnrank0.5willbespawned.This makes it possible to create any number of spawned action items for one pass-through item.
Differences between the query blocks
Description
Query cycle initiated only when an item arrives (similar to the Equation(I) block). X Query cycle initiation is controlled using options on the Options tab (similar to the X
Equation block).
Supports Spawning X Works in continuous models X
Data Management and Exchange 779
Blocks for data management and exchange
Works in discrete event models Works in discrete rate models
X X X X
Query Equation Query Equation(I)
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