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Performance optimization: Prefetch schema hierarchy #77
Description
As a heuristic, we can query the parent classes/categories (vertical) as well as referenced property characteristics (horizontal).
SMW Ask Query to get all required schemas for the instance Item:OSWff8ab0e2075040d4939ac9313a997904:
https://wiki-dev.open-semantic-lab.org/w/api.php?action=ask&query=
[[-HasType::Item:OSWff8ab0e2075040d4939ac9313a997904]]
OR[[-SubClassOf.-HasType::Item:OSWff8ab0e2075040d4939ac9313a997904]]
OR[[-SubClassOf.-SubClassOf.-HasType::Item:OSWff8ab0e2075040d4939ac9313a997904]]
OR[[-SubClassOf.-SubClassOf.-SubClassOf.-HasType::Item:OSWff8ab0e2075040d4939ac9313a997904]]
OR[[-SubClassOf.-SubClassOf.-SubClassOf.-SubClassOf.-HasType::Item:OSWff8ab0e2075040d4939ac9313a997904]]
OR[[-SubClassOf.-SubClassOf.-SubClassOf.-SubClassOf.-SubClassOf.-HasType::Item:OSWff8ab0e2075040d4939ac9313a997904]]
|?HasProperty.HasCharacteristic=c1
|?HasProperty.HasCharacteristic.HasQuantity=q1
|?HasProperty.HasCharacteristic.HasProperty.HasCharacteristic=c2
|?HasProperty.HasCharacteristic.HasProperty.HasCharacteristic.HasQuantity=q2
|?HasProperty.HasCharacteristic.HasProperty.HasCharacteristic.HasProperty.HasCharacteristic=c3
|?HasProperty.HasCharacteristic.HasProperty.HasCharacteristic.HasProperty.HasCharacteristic.HasQuantity=q3
&format=json
We can then fetch all returned categories/schemas in a single API call, see #78
However, currently the property path queries stop working at HasProperty.HasCharacteristic.HasProperty.HasCharacteristic.HasProperty and beyond, probably due to SemanticMediaWiki/SemanticMediaWiki#5036
Activity
LukasGold commentedon Nov 5, 2024
Idea: use functools.cache to reduce number of schema refetches