SQL Alchemy dialect for Neo4j

Related tags

Flask sqlalchemy-neo4j
Overview

SQL Alchemy dialect for Neo4j

This package provides the SQL dialect for Neo4j, using the official JDBC driver (the Neo4j "BI Connector" )

Installation

pip install sqlalchemy-neo4j

Prerequisites

  • Java 8 / 11
  • Download the Neo4j BI Connector

    The reason the JAR is not included in the package is due to licensing concerns. I may add the jar into the bundle in the future.

  • Add the jar to the classpath, either directly via the CLASSPATH environment variable or while initializing the JVM

    You can also use the NEOJDBC_WARMUP environment variable, which will ensure we reuse an existing jpype instance or create a new one ( with default parameters )

Getting started

from sqlalchemy import create_engine
from 

# This happens automatically if you set the NEOJDBC_WARMUP environment variable
jpype.startJVM()

eng = create_engine("neo4j+jdbc://neo4j-neo4j:7687/neo4j?UID=neo4j&PWD=QUOTED_PASSWORD&LogLevel=6&StrictlyUseBoltScheme=false")

execute = engine.execute("select * from Node.YOUR_NODE limit 1")
rows = execute.fetchall()
for row in rows:
    print(row)

See more examples

Related projects

  • Neo4j Metabase Driver - Use Neo4j with Metabase. Use both SQL and Cypher ( the driver uses the same underlying BI connector for SQL queries )

Future

  • Add Cypher support
  • Add support for Cypher views in JDBC driver
  • Add ORM support and testing
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Comments
  • error message in the logs

    error message in the logs

    FYI, when I use your example, I got some error message in the logs

    To remove it I found 2 solutions

        jpype.startJVM()

    import jpype.imports
    from java.lang import System
 System.setProperty("log4j2.loggerContextFactory","com.simba.neo4j.shaded.apache.logging.log4j.simple.SimpleLoggerContextFactory")

    and to remove the info logs

        jpype.startJVM()

    import jpype.imports
    from java.lang import System
    System.setProperty("log4j2.loggerContextFactory","com.simba.neo4j.shaded.apache.logging.log4j.simple.SimpleLoggerContextFactory")

    from java.util.logging import LogManager
    LogManager.getLogManager().reset()
    opened by nicolas-cyfix 3
  • installation issue

    installation issue

    Hi,

    I really would like to try your driver. but when I install it

    • on a Debian 11
    • Java 11 is install (default-are)

    I got this error:

    pip install sqlalchemy-neo4j
Collecting sqlalchemy-neo4j
  Downloading sqlalchemy_neo4j-0.1.dev0-py3-none-any.whl (18 kB)
Collecting jaydebeapi
  Downloading JayDeBeApi-1.2.3-py3-none-any.whl (26 kB)
Collecting jpype
  Downloading jpype-0.0.tar.gz (541 bytes)
    ERROR: Command errored out with exit status 1:
     command: /usr/local/bin/python -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-pk1meydh/jpype_1c8c781209824a1d83b7166a9cb83e90/setup.py'"'"'; __file__='"'"'/tmp/pip-install-pk1meydh/jpype_1c8c781209824a1d83b7166a9cb83e90/setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-_63dpvjh
         cwd: /tmp/pip-install-pk1meydh/jpype_1c8c781209824a1d83b7166a9cb83e90/
    Complete output (8 lines):
    
    =========================================
    
    Please install the `JPype` with ``pip install jpype1``
    
    =========================================
    
    
    ----------------------------------------
WARNING: Discarding https://files.pythonhosted.org/packages/92/86/80f8af65d7a681c970914c4ed1cb98178bbd1f1ac7fdff0a2bab75c47708/jpype-0.0.tar.gz#sha256=db973cd5fc031b37bb8968139d4333836d9fb402ce660be9ce52d9f8d1c1cbdf (from https://pypi.org/simple/jpype/). Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
ERROR: Could not find a version that satisfies the requirement jpype (from sqlalchemy-neo4j) (from versions: 0.0)
ERROR: No matching distribution found for jpype

    Do you know what I am missing?

    opened by nicolas-cyfix 2
Owner
Beni Ben zikry
Beni Ben zikry
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