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community[patch]: Resolve KuzuQAChain API Changes (#16885)

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- **Description:** Updates to the Kuzu API had broken this
functionality. These updates resolve those issues and add a new test to
demonstrate the updates.
- **Issue:** #11874
- **Dependencies:** No new dependencies
- **Twitter handle:** @amirk08


Test results:
```
tests/integration_tests/graphs/test_kuzu.py::TestKuzu::test_query_no_params PASSED                                   [ 33%]
tests/integration_tests/graphs/test_kuzu.py::TestKuzu::test_query_params PASSED                                      [ 66%]
tests/integration_tests/graphs/test_kuzu.py::TestKuzu::test_refresh_schema PASSED                                    [100%]

=================================================== slowest 5 durations =================================================== 
0.53s call     tests/integration_tests/graphs/test_kuzu.py::TestKuzu::test_refresh_schema
0.34s call     tests/integration_tests/graphs/test_kuzu.py::TestKuzu::test_query_no_params
0.28s call     tests/integration_tests/graphs/test_kuzu.py::TestKuzu::test_query_params
0.03s teardown tests/integration_tests/graphs/test_kuzu.py::TestKuzu::test_refresh_schema
0.02s teardown tests/integration_tests/graphs/test_kuzu.py::TestKuzu::test_query_params
==================================================== 3 passed in 1.27s ==================================================== 
```
This commit is contained in:
Amir Karbasi
2024-02-15 13:18:37 -05:00
committed by GitHub
parent a84a3add25
commit bccc9241ea
2 changed files with 23 additions and 21 deletions
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29
libs/community/langchain_community/graphs/kuzu_graph.py
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@@ -36,10 +36,7 @@ class KuzuGraph:
def query(self, query: str, params: dict = {}) -> List[Dict[str, Any]]:
"""Query Kùzu database"""
params_list = []
for param_name in params:
params_list.append([param_name, params[param_name]])
result = self.conn.execute(query, params_list)
result = self.conn.execute(query, params)
column_names = result.get_column_names()
return_list = []
while result.has_next():
@@ -79,20 +76,16 @@ class KuzuGraph:
rel_properties = []
for table in rel_tables:
current_table_schema = {"properties": [], "label": table["name"]}
properties_text = self.conn._connection.get_rel_property_names(
table["name"]
).split("\n")
for i, line in enumerate(properties_text):
# The first 3 lines defines src, dst and name, so we skip them
if i < 3:
continue
if not line:
continue
property_name, property_type = line.strip().split(" ")
current_table_schema["properties"].append(
(property_name, property_type)
)
table_name = table["name"]
current_table_schema = {"properties": [], "label": table_name}
query_result = self.conn.execute(
f"CALL table_info('{table_name}') RETURN *;"
)
while query_result.has_next():
row = query_result.get_next()
prop_name = row[1]
prop_type = row[2]
current_table_schema["properties"].append((prop_name, prop_type))
rel_properties.append(current_table_schema)
self.schema = (