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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,13 @@ def __init__(self, data_source_service: CatalogDataSourceService):
self._ds_service = data_source_service

def validate_ldm(self, model: CatalogDeclarativeModel) -> None:
"""
Validates that referenced data sources in LDM actually exist.
If they do not exist, raises ValueError.

Returns:
None
"""
if model.ldm is not None:
ldm_ds_in_use = set(
dataset.data_source_table_id.data_source_id
Expand All @@ -19,6 +26,12 @@ def validate_ldm(self, model: CatalogDeclarativeModel) -> None:
self.validate_data_source_ids(ldm_ds_in_use)

def validate_data_source_ids(self, data_source_ids: set[str]) -> None:
"""
Compares data source ids with existing data sources in the catalog.

Returns:
None
"""
full_ds_set = set(data_source.id for data_source in self._ds_service.list_data_sources())
diff_ds = data_source_ids - full_ds_set
if len(diff_ds) != 0:
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