upgrade to support Neo4j 4.4

- limit the indexes query to ignore non-BTREE indexes
- replaced the deprecated "db.indexes()" function call
- renamed get_indexes function to get_btree_indexes

data_loader.py

@@ -37,20 +37,20 @@
 BATCH_SIZE = 1000
 
 
-def get_indexes(session):
+def get_btree_indexes(session):
     """
     Queries the database to get all existing indexes
     :param session: the current neo4j transaction session
     :return: A set of tuples representing all existing indexes in the database
     """
-    command = "call db.indexes()"
+    command = "SHOW INDEXES"
     result = session.run(command)
     indexes = set()
     for r in result:
-        indexes.add(format_as_tuple(r["labelsOrTypes"][0], r["properties"]))
+        if r["type"] == "BTREE":
+            indexes.add(format_as_tuple(r["labelsOrTypes"][0], r["properties"]))
     return indexes
 
-
 def format_as_tuple(node_name, properties):
     """
     Format index info as a tuple
@@ -989,7 +989,7 @@ def create_indexes(self, session):
         properties file
         :param session: the current neo4j transaction session
         """
-        existing = get_indexes(session)
+        existing = get_btree_indexes(session)
         # Create indexes from "id_fields" section of the properties file
         ids = self.schema.props.id_fields
         for node_name in ids:

requirements.txt

@@ -1,5 +1,5 @@
 pyyaml
-neo4j==4.2.*
+neo4j==4.4.*
 boto3
 requests
 elasticsearch==7.13.*