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84 lines
3.1 KiB
Python
84 lines
3.1 KiB
Python
from cozo import *
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if __name__ == '__main__':
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db = CozoDb('_test', destroy_on_exit=True)
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res = db.tx_attr([
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PutAttr('person.idd', Typing.string, index=Indexing.identity),
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PutAttr('person.first_name', Typing.string, index=Indexing.indexed),
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PutAttr('person.last_name', Typing.string, index=Indexing.indexed),
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PutAttr('person.age', Typing.int, index=Indexing.indexed),
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PutAttr('person.friend', Typing.ref, cardinality=Cardinality.many, index=Indexing.indexed),
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PutAttr('person.weight', Typing.float, index=Indexing.indexed),
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PutAttr('person.covid', Typing.bool),
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])
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print(res)
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print(db.tx_attr([
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PutAttr('person.id', Typing.string, id=res['results'][0][0], cardinality=Cardinality.one,
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index=Indexing.identity),
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RetractAttr('person.covid', Typing.bool, id=res['results'][-1][0], cardinality=Cardinality.one, history=False,
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index=Indexing.indexed),
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]))
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print(db.tx([
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Put({'_temp_id': 'alice',
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'person.first_name': 'Alice',
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'person.age': 7,
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'person.last_name': 'Amorist',
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'person.id': 'alice_amorist',
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'person.weight': 25,
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'person.friend': 'eve'}),
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Put({'_temp_id': 'bob',
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'person.first_name': 'Bob',
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'person.age': 70,
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'person.last_name': 'Wonderland',
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'person.id': 'bob_wonderland',
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'person.weight': 100,
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'person.friend': 'alice'
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}),
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Put({'_temp_id': 'eve',
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'person.first_name': 'Eve',
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'person.age': 18,
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'person.last_name': 'Faking',
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'person.id': 'eve_faking',
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'person.weight': 50,
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'person.friend': [
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'alice',
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'bob',
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{'person.first_name': 'Charlie',
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'person.age': 22,
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'person.last_name': 'Goodman',
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'person.id': 'charlie_goodman',
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'person.weight': 120,
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'person.friend': 'eve'}
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]
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}),
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Put({'_temp_id': 'david',
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'person.first_name': 'David',
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'person.age': 7,
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'person.last_name': 'Dull',
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'person.id': 'david_dull',
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'person.weight': 25,
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'person.friend': {
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'_temp_id': 'george',
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'person.first_name': 'George',
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'person.age': 7,
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'person.last_name': 'Geomancer',
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'person.id': 'george_geomancer',
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'person.weight': 25,
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'person.friend': 'george'}
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}),
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]))
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res = db.run([
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R.ff(['?a', '?b'],
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T.person.friend('?a', '?b')),
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R.ff(['?a', '?b'],
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T.person.friend('?a', '?c'),
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R.ff('?c', '?b')),
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Q(['?a'],
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T.person.first_name('?a', '?n'),
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T.person.first_name('?alice', 'Alice'),
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NotExists(R.ff('?a', '?alice'))
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),
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],
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out={'friend': Pull('?a', ['person.first_name'])})
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print(res)
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