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39 lines
1.3 KiB
Python
39 lines
1.3 KiB
Python
from typing import List, Union
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from uuid import UUID
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from cognee.modules.data.models import Dataset
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from cognee.modules.data.methods.create_authorized_dataset import create_authorized_dataset
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from cognee.modules.data.exceptions import DatasetNotFoundError
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async def load_or_create_datasets(
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dataset_names: List[Union[str, UUID]], existing_datasets: List[Dataset], user
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) -> List[Dataset]:
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"""
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Given a list of dataset identifiers (names or UUIDs), return Dataset instances:
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- If an identifier matches an existing Dataset (by name or id), reuse it.
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- Otherwise, create a new Dataset with a unique id.
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"""
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result: List[Dataset] = []
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for identifier in dataset_names:
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# Try to find a matching dataset in the existing list
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# If no matching dataset is found return None
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match = next(
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(ds for ds in existing_datasets if ds.name == identifier or ds.id == identifier), None
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)
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if match:
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result.append(match)
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continue
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# If the identifier is a UUID but nothing matched, that's an error
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if isinstance(identifier, UUID):
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raise DatasetNotFoundError(f"Dataset with given UUID does not exist: {identifier}")
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new_dataset = await create_authorized_dataset(identifier, user)
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result.append(new_dataset)
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return result
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