query.js
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'use strict';
var Utils = require('../../utils')
, MysqlQuery = require('../mysql/query');
module.exports = (function() {
var Query = function(client, sequelize, callee, options) {
this.client = client;
this.callee = callee;
this.sequelize = sequelize;
this.options = Utils._.extend({
logging: console.log,
plain: false,
raw: false
}, options || {});
var self = this;
this.checkLoggingOption();
this.promise = new Utils.Promise(function(resolve, reject) {
self.resolve = resolve;
self.reject = reject;
});
};
Utils.inherit(Query, MysqlQuery);
Query.prototype.run = function(sql) {
this.sql = sql;
if (this.options.logging !== false) {
this.sequelize.log('Executing (' + this.client.uuid + '): ' + this.sql);
}
var resultSet = [],
errorDetected = false,
alreadyEnded = false, // This is needed because CALL queries emit 'end' twice...
self = this;
this.client.query(this.sql)
.on('result', function(results) {
results
.on('row', function(row, metadata) {
var type;
for (var prop in row) {
if (row.hasOwnProperty(prop)) {
if (row[prop] === null) {
continue;
}
type = metadata.types[prop];
switch (type) {
case 'TINYINT':
case 'SMALLINT':
case 'INTEGER':
case 'MEDIUMINT':
case 'BIGINT':
case 'YEAR':
row[prop] = parseInt(row[prop], 10);
break;
case 'DECIMAL':
case 'FLOAT':
case 'DOUBLE':
row[prop] = parseFloat(row[prop]);
break;
case 'DATE':
case 'TIMESTAMP':
case 'DATETIME':
row[prop] = new Date(row[prop] + self.sequelize.options.timezone);
break;
case 'BIT':
case 'BLOB':
case 'TINYBLOB':
case 'MEDIUMBLOB':
case 'LONGBLOB':
if (metadata.charsetNrs[prop] === 63) { // binary
row[prop] = new Buffer(row[prop]);
}
break;
case 'TIME':
case 'CHAR':
case 'VARCHAR':
case 'SET':
case 'ENUM':
case 'GEOMETRY':
case 'NULL':
break;
default:
// blank
}
}
}
resultSet.push(row);
})
.on('error', function(err) {
errorDetected = true;
self.promise.emit('sql', self.sql);
err.sql = sql;
self.reject(self.formatError(err));
})
.on('end', function(info) {
if (alreadyEnded || errorDetected) {
return;
}
alreadyEnded = true;
self.promise.emit('sql', self.sql);
// we need to figure out whether to send the result set
// or info depending upon the type of query
if (/^call/.test(self.sql.toLowerCase())) {
self.resolve(resultSet);
} else if (/^show/.test(self.sql.toLowerCase()) ||
/^select/.test(self.sql.toLowerCase()) ||
/^describe/.test(self.sql.toLowerCase())) {
self.resolve(self.formatResults(resultSet));
} else {
self.resolve(self.formatResults(info));
}
});
})
.on('error', function(err) {
if (errorDetected) {
return;
}
errorDetected = true;
self.promise.emit('sql', self.sql);
self.reject(err);
})
.setMaxListeners(100);
return this.promise;
};
return Query;
})();