pyblueprints 0.3

A Python version of the Blueprints property graph model interface

SYNOPSIS: Provides a layer to abstract the Python developer from the graph database system used

Following the set of interfaces provided by tinkerpop for Blueprints, this proyect aims to give Python developers a similar functionality. A set of abstract classes are defined in order to guide the design of implementations for the different graph database engines.

Features

This is an experimental version only permitting partial functionality to:

• Rexster infrastructure, supporting every database supported by Rexster (https://github.com/tinkerpop/rexster/)

• Neo4j database providing abstraction over the neo4j-rest-client API.

Installation

The easiest way to get pyblueprints installed in your virtualenv is by:

pip install pyblueprints

Usage

This version of pybluerprints allows you to connect to graph databases by a Rexster Instance or through the neo4j-rest-client API. Therefore a Neo4j database can be accessed with both options. The Rexster instance also provides connection to the following databases:

• TinkerGraph

• OrientDB

• DEX

• Sail RDF Stores

Rexster

Connecting to a Rexster instance

>>> from pyblueprints import RexsterServer, RexsterGraph
>>> #Connecting to server
>>> HOST = 'http://localhost:8182'
>>> server = RexsterServer(HOST)
>>> #List graphs availbale in server
>>> server.graphs()
[u'tinkergraph', u'gratefulgraph', u'tinkergraph-readonly', u'sailgraph', u'emptygraph']
>>> #Connecting to a given graph
>>> graph = RexsterIndexableGraph(server, 'tinkergraph')

neo4j-rest-client

Creating a graph object through the neo4j-rest-client API

>>> from pyblueprints.neo4j import Neo4jGraph
>>> g = Neo4jGraph('http://localhost:7474/db/data')

Creating an indexable graph object through the neo4j-rest-client API

>>> from pyblueprints.neo4j import Neo4jIndexableGraph
>>> g = Neo4jIndexableGraph('http://localhost:7474/db/data')

lease keep in mind to backup your data before trying this library.

Changes

0.3 (2011-07-12)

• Added unittests

• Added getEdge, removeProperty and getBothEdges methods

• Returning None in NotFoundErrors instead of raising exception

• Bugfixes

0.2.2 (2011-07-11)

• Added basic installation and usage documentation

0.2.1 (2011-07-06)

• Updated documentation

0.2 (2011-07-06)

• Added integration with python-rexster

0.1 (2011-06-29)

• First Python Index Package release.