Jonathon Broughton
50 lines
1.7 KiB
Python
50 lines
1.7 KiB
Python
from specklepy.objects.graph_traversal.traversal import TraversalRule, GraphTraversal
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def get_data_traversal_rules() -> GraphTraversal:
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"""
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Generates traversal rules for navigating Speckle data structures.
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This function defines and returns traversal rules tailored for Speckle data.
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These rules are used to navigate and extract specific data properties
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within complex Speckle data hierarchies.
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It defines two main rules:
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1. `display_value_rule`:
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- Targets objects that have properties named either "displayValue" or
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"@displayValue".
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- Specifically focuses on objects with a 'speckle_type' containing
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"Geometry".
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- For such objects, the function looks to traverse their 'elements'
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or '@elements' properties.
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2. `default_rule`:
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- A more general rule that applies to all objects.
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- It aims to traverse all member names of an object while avoiding
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deprecated members (a potential enhancement for the future).
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Returns:
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GraphTraversal: A GraphTraversal instance initialized with the
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defined rules.
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"""
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display_value_property_aliases = {"displayValue", "@displayValue"}
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elements_property_aliases = {"elements", "@elements"}
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display_value_rule = TraversalRule(
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[
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lambda o: any(
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getattr(o, alias, None) for alias in display_value_property_aliases
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),
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lambda o: "Geometry" in o.speckle_type,
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],
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lambda o: elements_property_aliases,
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)
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default_rule = TraversalRule(
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[lambda _: True],
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lambda o: o.get_member_names(),
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)
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return GraphTraversal([display_value_rule, default_rule])
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