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Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

AGE AGType parser and driver support for Python

AGType parser and driver support for Apache AGE, graph extension for PostgreSQL.

Features

  • Unmarshal AGE result data(AGType) to Vertex, Edge, Path
  • Cypher query support for Psycopg2 PostgreSQL driver (enables to use cypher queries directly)

Prerequisites

sudo apt-get update
sudo apt-get install python3-dev libpq-dev
git clone https://github.com/apache/age.git
cd age/drivers/python

Install required packages

pip install -r requirements.txt

Test

python test_age_py.py \
-host "127.0.0.1" \
-db "postgres" \
-u "postgres" \
-pass "agens" \
-port 5432 \
-gn "test_graph"

python -m unittest -v test_agtypes.py

Build from source

python setup.py install

For more information about Apache AGE

Check AGE loaded on your PostgreSQL

Connect to your containerized Postgres instance and then run the following commands:

# psql 
CREATE EXTENSION age;
LOAD 'age';
SET search_path = ag_catalog, "$user", public;

Usage

License

Apache-2.0 License

Networkx

Netowkx Unit test

python test_networkx.py \
-host "127.0.0.1" \
-db "postgres" \
-u "postgres" \
-pass "agens" \
-port 5432

Here the following value required

  • -host : host name (optional)
  • -db : database name
  • -u : user name
  • -pass : password
  • -port : port (optional)

Networkx to AGE

Insert From networkx directed graph into an Age database.

Parameters

  • connection (psycopg2.connect): Connection object to the Age database.

  • G (networkx.DiGraph): Networkx directed graph to be converted and inserted.

  • graphName (str): Name of the age graph.

Returns

None

Example

# Create a Networkx DiGraph
G = nx.DiGraph()
G.add_node(1)
G.add_node(2)
G.add_edge(1, 2)

# Convert and insert the graph into the Age database
graphName = "sample_graph"
networkx_to_age(connection, G, graphName)

AGE to Netowkx

Converts data from a Apache AGE graph database into a Networkx directed graph.

Parameters

  • connection (psycopg2.connect): Connection object to the PostgreSQL database.
  • graphName (str): Name of the graph.
  • G (None | nx.DiGraph): Optional Networkx directed graph. If provided, the data will be added to this graph.
  • query (str | None): Optional Cypher query to retrieve data from the database.

Returns

  • nx.DiGraph: Networkx directed graph containing the converted data.

Example

# Call the function to convert data into a Networkx graph
graph = age_to_networkx(connection, graphName="MyGraph" )