query.js
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"use strict";
var Utils = require("../../utils")
, AbstractQuery = require('../abstract/query')
, QueryTypes = require('../../query-types')
module.exports = (function() {
var Query = function(database, sequelize, callee, options) {
this.database = database
this.sequelize = sequelize
this.callee = callee
this.options = Utils._.extend({
logging: console.log,
plain: false,
raw: false
}, options || {})
this.checkLoggingOption()
}
Utils.inherit(Query, AbstractQuery)
Query.prototype.getInsertIdField = function() {
return 'lastID'
}
Query.prototype.run = function(sql) {
var self = this
, promise
this.sql = sql
if (this.options.logging !== false) {
this.sequelize.log('Executing (' + this.options.uuid + '): ' + this.sql)
}
return new Utils.Promise(function (resolve) {
var columnTypes = {}
promise = this
self.database.serialize(function() {
var executeSql = function() {
if (self.sql.indexOf('-- ') === 0) {
// the sql query starts with a comment. don't bother the server with that ...
promise.emit('sql', self.sql, self.options.uuid)
return resolve()
} else {
resolve(new Utils.Promise(function (resolve, reject) {
self.database[getDatabaseMethod.call(self)](self.sql, function(err, results) {
// allow clients to listen to sql to do their own logging or whatnot
promise.emit('sql', self.sql, self.options.uuid)
if (err) {
err.sql = self.sql
reject(err)
} else {
var metaData = this
metaData.columnTypes = columnTypes
var result = self.callee
// add the inserted row id to the instance
if (self.send('isInsertQuery', results, metaData)) {
self.send('handleInsertQuery', results, metaData)
}
if (self.sql.indexOf('sqlite_master') !== -1) {
result = results.map(function(resultSet) { return resultSet.name })
} else if (self.send('isSelectQuery')) {
if(!self.options.raw) {
results = results.map(function(result) {
for (var name in result) {
if (result.hasOwnProperty(name) && metaData.columnTypes[name]) {
if (metaData.columnTypes[name] === 'DATETIME') {
// we need to convert the timestamps into actual date objects
var val = result[name]
if (val !== null) {
result[name] = new Date(val+'Z') // Z means UTC
}
} else if (metaData.columnTypes[name].lastIndexOf('BLOB') !== -1) {
if (result[name]) {
result[name] = new Buffer(result[name])
}
}
}
}
return result
})
}
result = self.send('handleSelectQuery', results)
} else if (self.send('isShowOrDescribeQuery')) {
result = results
} else if (self.sql.indexOf('PRAGMA INDEX_LIST') !== -1) {
// this is the sqlite way of getting the indexes of a table
result = results.map(function(result) {
return {
name: result.name,
tableName: result.name.split('_')[0],
unique: (result.unique === 0)
}
})
} else if (self.sql.indexOf('PRAGMA TABLE_INFO') !== -1) {
// this is the sqlite way of getting the metadata of a table
result = {}
results.forEach(function(_result) {
result[_result.name] = {
type: _result.type,
allowNull: (_result.notnull === 0),
defaultValue: _result.dflt_value
}
if (result[_result.name].type === 'TINYINT(1)') {
result[_result.name].defaultValue = { '0': false, '1': true }[result[_result.name].defaultValue]
}
if (result[_result.name].defaultValue === undefined) {
result[_result.name].defaultValue = null
}
if (typeof result[_result.name].defaultValue === 'string') {
result[_result.name].defaultValue = result[_result.name].defaultValue.replace(/'/g, "")
}
})
} else if (self.sql.indexOf('PRAGMA foreign_keys;') !== -1) {
result = results[0]
} else if (self.sql.indexOf('PRAGMA foreign_keys') !== -1) {
result = results
} else if ([QueryTypes.BULKUPDATE, QueryTypes.BULKDELETE].indexOf(self.options.type) !== -1) {
result = metaData.changes
}
resolve(result)
}
})
}))
}
}
if ((getDatabaseMethod.call(self) === 'all')) {
var tableNames = []
if (self.options && self.options.tableNames) {
tableNames = self.options.tableNames
} else if (/FROM `(.*?)`/i.exec(self.sql)) {
tableNames.push(/FROM `(.*?)`/i.exec(self.sql)[1])
}
if (!tableNames.length) {
return executeSql()
} else {
return Utils.Promise.map(tableNames, function (tableName) {
if (tableName !== 'sqlite_master') {
return new Utils.Promise(function (resolve) {
// get the column types
self.database.all("PRAGMA table_info(" + tableName + ")", function(err, results) {
if (!err) {
for (var i=0, l=results.length; i<l; i++) {
columnTypes[tableName + '.' + results[i].name] = columnTypes[results[i].name] = results[i].type
}
}
resolve()
});
})
}
}).then(executeSql)
}
} else {
return executeSql()
}
})
})
}
//private
var getDatabaseMethod = function() {
if (this.send('isInsertQuery') || this.send('isUpdateQuery') || (this.sql.toLowerCase().indexOf('CREATE TEMPORARY TABLE'.toLowerCase()) !== -1) || this.options.type === QueryTypes.BULKDELETE) {
return 'run'
} else {
return 'all'
}
}
return Query
})()