var EventEmitter = require('events').EventEmitter; var util = require('util'); var Client = require(__dirname+'/client'); var defaults = require(__dirname + '/defaults'); var pool = require(__dirname + '/pool'); var Connection = require(__dirname + '/connection'); var PG = function(clientConstructor) { EventEmitter.call(this); this.defaults = defaults; this.Client = pool.Client = clientConstructor; this.Query = this.Client.Query; this.pools = pool; this.Connection = Connection; this.types = require('pg-types'); }; util.inherits(PG, EventEmitter); PG.prototype.end = function() { var self = this; var keys = Object.keys(self.pools.all); var count = keys.length; if(count === 0) { self.emit('end'); } else { keys.forEach(function(key) { var pool = self.pools.all[key]; delete self.pools.all[key]; pool.drain(function() { pool.destroyAllNow(function() { count--; if(count === 0) { self.emit('end'); } }); }); }); } }; PG.prototype.connect = function(config, callback) { if(typeof config == "function") { callback = config; config = null; } var pool = this.pools.getOrCreate(config); pool.connect(callback); if(!pool.listeners('error').length) { //propagate errors up to pg object pool.on('error', this.emit.bind(this, 'error')); } }; // cancel the query runned by the given client PG.prototype.cancel = function(config, client, query) { if(client.native) { return client.cancel(query); } var c = config; //allow for no config to be passed if(typeof c === 'function') { c = defaults; } var cancellingClient = new this.Client(c); cancellingClient.cancel(client, query); }; if(typeof process.env.NODE_PG_FORCE_NATIVE != 'undefined') { module.exports = new PG(require('./native')); } else { module.exports = new PG(Client); //lazy require native module...the native module may not have installed module.exports.__defineGetter__("native", function() { delete module.exports.native; module.exports.native = new PG(require('./native')); return module.exports.native; }); }