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.
Apache AGE](https://age.apache.org/) is a PostgreSQL extension that provides graph database functionality. The goal of the Apache AGE project is to create single storage that can handle both relational and graph model data so that users can use standard ANSI SQL along with openCypher, the Graph query language. This repository hosts the development of the Python driver for this Apache extension (currently in Incubator status). Thanks for checking it out.
A graph consists of a set of vertices (also called nodes) and edges, where each individual vertex and edge possesses a map of properties. A vertex is the basic object of a graph, that can exist independently of everything else in the graph. An edge creates a directed connection between two vertices. A graph database is simply composed of vertices and edges. This type of database is useful when the meaning is in the relationships between the data. Relational databases can easily handle direct relationships, but indirect relationships are more difficult to deal with in relational databases. A graph database stores relationship information as a first-class entity. Apache AGE gives you the best of both worlds, simultaneously.
Apache AGE is:
AGType parser and driver support for Apache AGE, graph extension for PostgreSQL.
sudo apt-get update sudo apt-get install python3-dev libpq-dev git clone https://github.com/apache/age.git cd age/drivers/python
pip install -r requirements.txt
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
python setup.py install
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;
Apache-2.0 License
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)Insert From networkx directed graph into an Age database.
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.
None
# 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)
Converts data from a Apache AGE graph database into a Networkx directed graph.
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.nx.DiGraph: Networkx directed graph containing the converted data.# Call the function to convert data into a Networkx graph graph = age_to_networkx(connection, graphName="MyGraph" )