query.js
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'use strict';
var Utils = require('../../utils')
, AbstractQuery = require('../abstract/query')
, DataTypes = require('../../data-types')
, hstore = require('./hstore')
, QueryTypes = require('../../query-types')
, Promise = require('../../promise');
module.exports = (function() {
var Query = function(client, sequelize, callee, options) {
this.client = client;
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.run = function(sql) {
/* jshint -W027 */
this.sql = sql;
var self = this
, receivedError = false
, query = this.client.query(sql)
, rows = [];
if (this.options.logging !== false) {
this.sequelize.log('Executing (' + this.options.uuid + '): ' + this.sql);
}
return new Promise(function(resolve, reject) {
var promise = this;
query.on('row', function(row) {
rows.push(row);
});
query.on('error', function(err) {
receivedError = true;
err.sql = sql;
promise.emit('sql', sql, self.options.uuid);
reject(err);
});
query.on('end', function(result) {
if (receivedError) {
return;
}
promise.emit('sql', self.sql, self.options.uuid);
resolve([rows, sql, result]);
});
}).spread(function(rows, sql, result) {
var results = rows
, isTableNameQuery = (sql.indexOf('SELECT table_name FROM information_schema.tables') === 0)
, isRelNameQuery = (sql.indexOf('SELECT relname FROM pg_class WHERE oid IN') === 0);
if (isTableNameQuery || isRelNameQuery) {
if (isRelNameQuery) {
results = rows.map(function(row) {
return {
name: row.relname,
tableName: row.relname.split('_')[0]
};
});
} else {
results = rows.map(function(row) { return Utils._.values(row); });
}
return results;
}
if (self.send('isSelectQuery')) {
if (self.sql.toLowerCase().indexOf('select c.column_name') === 0) {
result = {};
rows.forEach(function(_result) {
result[_result.Field] = {
type: _result.Type.toUpperCase(),
allowNull: (_result.Null === 'YES'),
defaultValue: _result.Default,
special: (!!_result.special ? self.sequelize.queryInterface.QueryGenerator.fromArray(_result.special) : [])
};
if (result[_result.Field].type === 'BOOLEAN') {
result[_result.Field].defaultValue = { 'false': false, 'true': true }[result[_result.Field].defaultValue];
if (result[_result.Field].defaultValue === undefined) {
result[_result.Field].defaultValue = null;
}
}
if (typeof result[_result.Field].defaultValue === 'string') {
result[_result.Field].defaultValue = result[_result.Field].defaultValue.replace(/'/g, '');
if (result[_result.Field].defaultValue.indexOf('::') > -1) {
var split = result[_result.Field].defaultValue.split('::');
if (split[1].toLowerCase() !== 'regclass)') {
result[_result.Field].defaultValue = split[0];
}
}
}
});
return result;
} else {
// Postgres will treat tables as case-insensitive, so fix the case
// of the returned values to match attributes
if (self.options.raw === false && self.sequelize.options.quoteIdentifiers === false) {
var attrsMap = Utils._.reduce(self.callee.attributes, function(m, v, k) { m[k.toLowerCase()] = k; return m; }, {});
rows.forEach(function(row) {
Utils._.keys(row).forEach(function(key) {
var targetAttr = attrsMap[key];
if (targetAttr !== key) {
row[targetAttr] = row[key];
delete row[key];
}
});
});
}
// Parse hstore fields if the model has any hstore fields.
// This cannot be done in the 'pg' lib because hstore is a UDT.
if (!!self.callee && !!self.callee._hasHstoreAttributes) {
rows.forEach(function(row) {
Utils._.keys(row).forEach(function(key) {
if (self.callee._isHstoreAttribute(key)) {
row[key] = hstore.parse(row[key]);
}
});
});
}
return self.send('handleSelectQuery', rows);
}
} else if (self.send('isShowOrDescribeQuery')) {
return results;
} else if ([QueryTypes.BULKUPDATE, QueryTypes.BULKDELETE].indexOf(self.options.type) !== -1) {
return result.rowCount;
} else if (self.send('isInsertQuery') || self.send('isUpdateQuery')) {
if (self.callee !== null) { // may happen for bulk inserts or bulk updates
for (var key in rows[0]) {
if (rows[0].hasOwnProperty(key)) {
var record = rows[0][key];
if (!!self.callee.Model && !!self.callee.Model.rawAttributes && !!self.callee.Model.rawAttributes[key] && !!self.callee.Model.rawAttributes[key].type && self.callee.Model.rawAttributes[key].type.toString() === DataTypes.HSTORE.toString()) {
record = hstore.parse(record);
}
self.callee.dataValues[key] = record;
}
}
}
return self.callee;
} else {
return results;
}
});
return this;
};
Query.prototype.getInsertIdField = function() {
return 'id';
};
return Query;
})();