hstore stringify and parse functions for node-postgres parser/serializing
Provides basic hstore parsing and stringify methods (stringify / parse) for use with hstore datatype in postgres. Intended to be used with node-postgres
Note: this doesnt do any fancy type metadata serialization, so if you need something other than string -> string/null then hstore isnt a good fit, look at JSON support in postgresql 9.2/9.3.
parser: there doesnt seem to be a clean hook point, the FAQ refers to a test that includes the pgtypes file via a relative path, I couldnt see anything on the primary pg object that we could use, so path hacking it is.
A simple example of what you may have to do (see exp/test.js):
var pg = require'pg';var hstore = require'../index'; //your code = require('node-postgres-hstore')var path = require'path';var conString = "tcp://" + processenvPGUSER + ":" +processenvPGPASSWORD + "@localhost/deroku";// SELECT oid FROM pg_type WHERE typname = 'hstore'var hstoreOid = 74144; // different for every dbvar pgTypes = requirepathjoinpathdirnamerequireresolve'pg''types';pgTypessetTypeParserhstoreOid hstoreparsepgconnectconStringvar query = clientquery"SELECT 'a => b'::hstore As test";queryon'row'consoledirrow;;queryon'end'clientend;processexit;;
serialization: node-postgres doesnt have any extension points for serialization, so you have to do this in your own layers, although it looks like it may come soon query.js#L130
var hstore = require'node-postgres-hstore';var strOutput = hstorestringifypayload;
As of commit accb94b (07/07/12) the unit tests of node-postgres are failing, I suspect this is part of an overhaul as they target node v0.8.x. I will revisit once things have stablized again and attempt to expose a clean way to register parsers, a way to register serializers, and possibly an explicit method to collect up the metadata (oids) for custom types (needs some thought as we dont want to invisibly be hitting the db). TODO: consult with maintainers of node-postgres
npm install --save node-postgres-hstore
git clone repo
npm install --dev .
The MIT License