81 lines
1.9 KiB
JavaScript
81 lines
1.9 KiB
JavaScript
var EventEmitter = require('events').EventEmitter;
|
|
var util = require('util');
|
|
|
|
var types = require(__dirname + '/../types');
|
|
var utils = require(__dirname + '/../utils');
|
|
|
|
//event emitter proxy
|
|
var NativeQuery = function(text, values, callback) {
|
|
//TODO there are better ways to detect overloads
|
|
if(typeof text == 'object') {
|
|
this.text = text.text;
|
|
this.values = text.values;
|
|
this.name = text.name;
|
|
if(typeof values === 'function') {
|
|
this.callback = values;
|
|
} else if(values) {
|
|
this.values = values;
|
|
this.callback = callback;
|
|
}
|
|
} else {
|
|
this.text = text;
|
|
this.values = values;
|
|
this.callback = callback;
|
|
if(typeof values == 'function') {
|
|
this.values = null;
|
|
this.callback = values;
|
|
}
|
|
}
|
|
if(this.callback) {
|
|
this.rows = [];
|
|
}
|
|
//normalize values
|
|
if(this.values) {
|
|
for(var i = 0, len = this.values.length; i < len; i++) {
|
|
this.values[i] = utils.prepareValue(this.values[i]);
|
|
}
|
|
}
|
|
|
|
EventEmitter.call(this);
|
|
};
|
|
|
|
util.inherits(NativeQuery, EventEmitter);
|
|
var p = NativeQuery.prototype;
|
|
|
|
//maps from native rowdata into api compatible row object
|
|
var mapRowData = function(row) {
|
|
var result = {};
|
|
for(var i = 0, len = row.length; i < len; i++) {
|
|
var item = row[i];
|
|
result[item.name] = item.value == null ? null : types.getTypeParser(item.type, 'text')(item.value);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
p.handleRow = function(rowData) {
|
|
var row = mapRowData(rowData);
|
|
if(this.callback) {
|
|
this.rows.push(row);
|
|
}
|
|
this.emit('row', row);
|
|
};
|
|
|
|
p.handleError = function(error) {
|
|
if(this.callback) {
|
|
this.callback(error);
|
|
this.callback = null;
|
|
} else {
|
|
this.emit('error', error);
|
|
}
|
|
}
|
|
|
|
p.handleReadyForQuery = function(meta) {
|
|
if(this.callback) {
|
|
(meta || {}).rows = this.rows;
|
|
this.callback(null, meta);
|
|
}
|
|
this.emit('end');
|
|
};
|
|
|
|
module.exports = NativeQuery;
|