neb

Description

neb is a Python library for accessing Trinity, the standalone Python Neo4j server.

Python Dependencies

• restkit >= 2.1.1

Usage

Trinity doesn't support authentication, so this is a really simple interface.

Create a node, if it doesn't already exist

import neb.node
data = {'username': 'bueda', 'user_id': 12345}
neb.node.Node().create(node_id='bueda', **data)

Create a relationship between two nodes

Without having to have either node loaded:

import neb.relationship
data = {'since': '09/20/09'}
neb.relationship.Relationship().create(from_node='bueda', to='peplin',
        link_type='works_for', **data)

Or, if you already have one of the nodes:

import neb.node
data = {'username': 'bueda', 'user_id': 12345}
node = neb.node.Node().create(node_id='bueda', **data)

data = {'since': '09/20/09'}
node.connect(to='peplin', link_type='works_for', **data)

Or, if you already have both of the nodes:

import neb.node
data = {'username': 'bueda', 'user_id': 12345}
employer = neb.node.Node().create(node_id='bueda', **data)

data = {'username': 'peplin', 'user_id': 78910}
employee = neb.node.Node().create(node_id='peplin', **data)

data = {'since': '09/20/09'}
employee.connect(to=employer, link_type='works_for', **data)

Retreive node statistics

The stats method is relatively free form, and depends on what the specific instance of Trinity offers. In this case, assume it has a 'topics' node statistic.

import neb.statistic 
neb.statistic.NodeStatistic().calculate(node_id='bueda', statistic='topics')

If you have the node instance already:

import neb.node
data = {'username': 'bueda', 'user_id': 12345}
node = neb.node.Node().create(node_id='bueda', **data)
node.statistic(statistic='topics')