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Specify node types on Cypher query to improve performance #977

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Merged
yuanzhou merged 1 commit into from
Dec 17, 2025
Merged

Specify node types on Cypher query to improve performance #977

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5 changes: 2 additions & 3 deletions src/schema/schema_neo4j_queries.py
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Original file line number Diff line number Diff line change
Expand Up @@ -916,7 +916,6 @@ def link_collection_to_datasets(neo4j_driver, collection_uuid, dataset_uuid_list
try:
with neo4j_driver.session() as session:
tx = session.begin_transaction()

# First delete all the old linkages between this Collection and its member Datasets
_delete_collection_linkages_tx(tx=tx
, uuid=collection_uuid)
Expand Down Expand Up @@ -2035,9 +2034,9 @@ def _create_relationships_unwind_tx(tx:Neo4jSession, source_uuid_list:list, targ
outgoing = direction if direction == "->" else "-"

query = (
f"MATCH (t {{uuid: $target_uuid}}) "
f"MATCH (t:Collection {{uuid: $target_uuid}}) "
f"UNWIND $source_uuid_list AS src_uuid "
f"MATCH (s {{uuid: src_uuid}}) "
f"MATCH (s:Dataset {{uuid: src_uuid}}) "
f"CREATE (s){incoming}[r:{relationship.value}]{outgoing}(t) "
f"RETURN src_uuid AS linked_uuid"
)
Expand Down