Archive for the ‘Geoff’ Category

Introducing Py2neo and Geoff

Sunday, July 8th, 2012

Introducing Py2neo and Geoff by Nigel Small. (podcast)

From the description:

Py2neo has become a popular library for Python developers to drive Neo4j’s REST API. In this presentation for the Neo4j User Group, Nigel Small describes how Py2neo evolved, provide an introduction to how it is used. Nigel also explores Geoff, a textual format for storing and transmitting graph data (with a syntax heavily influenced by Neo4j’s Cypher language) and how it powers the Neo4j REPL.

If you want to read along, slides.

I don’t know the order of Neo4j, Py2neo and Geoff in a trifecta but I do know they make a very nice triplet.

Make tonight a movie night and catch this presentation.

Posted in Geoff, Neo4j, py2neo | No Comments »

XML to Graph Converter

Sunday, June 10th, 2012

XML to Graph Converter

From the webpage:

XML data can easily be converted into a graph. Simply load paste the XML data into the left-hand side, convert into Geoff, then view the results in the Neo4j console.

I would have modeled the XML differently, but that is probably a markup prejudice.

Still, an impressive demonstration and worth your time to review.

Posted in Geoff, Graphs, Neo4j, XML | No Comments »

Geoff – Easy Graph Data

Monday, April 30th, 2012

Geoff – Easy Graph Data

From the webpage:

Geoff is a declarative notation for representing graph data within concise human-readable text, designed specifically with Neo4j in mind. The format has been built to allow independent subgraphs to be represented outside of a graph database environment in such a way that they may be stored, transmitted and imported easily and efficiently. The basic elements which make up the Geoff format – subgraphs, rules and descriptors – are well defined but there exist several container representations which serve different purposes; commonly, either delimited text or a form of JSON is used.

Updated documentation and development of Geoff.

Topic mappers will be particularly interested in: Indexes and Merging.

Posted in Geoff, Graphs, Neo4j | No Comments »

Geoff

Sunday, January 8th, 2012

Geoff

Nigel Small writes:

Geoff is a declarative notation for representing graph data within concise human-readable text, designed specifically with Neo4j in mind. It can be used to store snapshots within a flat file or to transmit data changes over a network stream.

A Geoff data set or file consists of a sequence of rules. Each rule comprises a descriptor and an optional set of data held as key:value pairs. The descriptor is a sequence of tokens, somewhat similar to the notation used in the Cypher query language and can designate additive or subtractive requirements for nodes and relationships as well as manipulations to index entries.

This looks like it will repay close study fairly quickly. More to follow.

Posted in Cypher, Geoff, Neo4j | No Comments »