fix: drop instead of truncate

nx_arangodb/classes/digraph.py

@@ -126,10 +126,11 @@ class DiGraph(Graph, nx.DiGraph):
         as expected.
 
     overwrite_graph : bool (optional, default: False)
-        Whether to truncate the graph collections when the graph is loaded from
-        the database. If set to True, the graph collections will be truncated
-        before loading the graph data. NOTE: This parameter only applies if the
-        graph already exists in the database.
+        Whether to drop & re-create the graph collections before loading
+        **incoming_graph_data** into the graph. NOTE: This parameter only
+        applies if the graph already exists in the database. NOTE: Dropping
+        the graph collections will erase all properties of the collections, including
+        created indexes.
 
     args: positional arguments for nx.Graph
         Additional arguments passed to nx.Graph.

nx_arangodb/classes/graph.py

@@ -160,10 +160,11 @@ class Graph(nx.Graph):
         as expected.
 
     overwrite_graph : bool (optional, default: False)
-        Whether to truncate the graph collections when the graph is loaded from
-        the database. If set to True, the graph collections will be truncated
-        before loading the graph data. NOTE: This parameter only applies if the
-        graph already exists in the database.
+        Whether to drop & re-create the graph collections before loading
+        **incoming_graph_data** into the graph. NOTE: This parameter only
+        applies if the graph already exists in the database. NOTE: Dropping
+        the graph collections will erase all properties of the collections, including
+        created indexes.
 
     args: positional arguments for nx.Graph
         Additional arguments passed to nx.Graph.
@@ -231,13 +232,16 @@ def __init__(
             self.__set_arangodb_backend_config(read_parallelism, read_batch_size)
 
             if overwrite_graph:
-                logger.info("Truncating graph collections...")
+                logger.info("Overwriting graph collections...")
 
                 for col in self.adb_graph.vertex_collections():
-                    self.db.collection(col).truncate()
+                    self.db.delete_collection(col)
+                    self.db.create_collection(col)
 
-                for col in self.adb_graph.edge_definitions():
-                    self.db.collection(col["edge_collection"]).truncate()
+                for ed in self.adb_graph.edge_definitions():
+                    col = ed["edge_collection"]
+                    self.db.delete_collection(col)
+                    self.db.create_collection(col, edge=True)
 
             if isinstance(incoming_graph_data, nx.Graph):
                 self._load_nx_graph(incoming_graph_data, write_batch_size, write_async)

nx_arangodb/classes/multidigraph.py

@@ -136,10 +136,11 @@ class MultiDiGraph(MultiGraph, DiGraph, nx.MultiDiGraph):
         as expected.
 
     overwrite_graph : bool (optional, default: False)
-        Whether to truncate the graph collections when the graph is loaded from
-        the database. If set to True, the graph collections will be truncated
-        before loading the graph data. NOTE: This parameter only applies if the
-        graph already exists in the database.
+        Whether to drop & re-create the graph collections before loading
+        **incoming_graph_data** into the graph. NOTE: This parameter only
+        applies if the graph already exists in the database. NOTE: Dropping
+        the graph collections will erase all properties of the collections, including
+        created indexes.
 
     args: positional arguments for nx.Graph
         Additional arguments passed to nx.Graph.

nx_arangodb/classes/multigraph.py

@@ -137,10 +137,11 @@ class MultiGraph(Graph, nx.MultiGraph):
         as expected.
 
     overwrite_graph : bool (optional, default: False)
-        Whether to truncate the graph collections when the graph is loaded from
-        the database. If set to True, the graph collections will be truncated
-        before loading the graph data. NOTE: This parameter only applies if the
-        graph already exists in the database.
+        Whether to drop & re-create the graph collections before loading
+        **incoming_graph_data** into the graph. NOTE: This parameter only
+        applies if the graph already exists in the database. NOTE: Dropping
+        the graph collections will erase all properties of the collections, including
+        created indexes.
 
     args: positional arguments for nx.Graph
         Additional arguments passed to nx.Graph.