66 lines
1.2 KiB
Python
66 lines
1.2 KiB
Python
# scopes.storage.concept
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"""Core classes for concept map structure."""
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from zope.interface import implementer
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from scopes.interfaces import IConcept
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from scopes.storage.common import registerContainerClass
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from scopes.storage.tracking import Container, Track
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@implementer(IConcept)
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class Concept(Track):
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headFields = ['name']
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class Concepts(Container):
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insertOnChange = False
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class Predicate(Concept):
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prefix = 'pred'
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@registerContainerClass
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class Predicates(Concepts):
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itemFactory = Predicate
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tableName = 'preds'
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class Triple(Track):
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headFields = ['first', 'second', 'predicate']
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prefix = 'rel'
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@registerContainerClass
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class Rels(Container):
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itemFactory = Triple
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indexes = [('first', 'predicate', 'second'),
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('first', 'second'), ('predicate', 'second')]
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tableName = 'rels'
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insertOnChange = False
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# types stuff
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class Type(Concept):
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headFields = ['name', 'prefix']
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prefix = 'type'
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def get(key, default=None):
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return self.container.queryLast(name=key) or default
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@registerContainerClass
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class Types(Concepts):
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itemFactory = Type
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indexes = [('name',), ('prefix',)]
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tableName = 'types'
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