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var Classes = Object.create(null);
/**
* Create a new Connection instance.
* @param {object|string} config Configuration or connection string for new MySQL connection
* @return {Connection} A new MySQL connection
* @public
*/
exports.createConnection = function createConnection(config) {
var Connection = loadClass('Connection');
var ConnectionConfig = loadClass('ConnectionConfig');
return new Connection({config: new ConnectionConfig(config)});
};
/**
* Create a new Pool instance.
* @param {object|string} config Configuration or connection string for new MySQL connections
* @return {Pool} A new MySQL pool
* @public
*/
exports.createPool = function createPool(config) {
var Pool = loadClass('Pool');
var PoolConfig = loadClass('PoolConfig');
return new Pool({config: new PoolConfig(config)});
};
/**
* Create a new PoolCluster instance.
* @param {object} [config] Configuration for pool cluster
* @return {PoolCluster} New MySQL pool cluster
* @public
*/
exports.createPoolCluster = function createPoolCluster(config) {
var PoolCluster = loadClass('PoolCluster');
return new PoolCluster(config);
};
/**
* Create a new Query instance.
* @param {string} sql The SQL for the query
* @param {array} [values] Any values to insert into placeholders in sql
* @param {function} [callback] The callback to use when query is complete
* @return {Query} New query object
* @public
*/
exports.createQuery = function createQuery(sql, values, callback) {
var Connection = loadClass('Connection');
return Connection.createQuery(sql, values, callback);
};
/**
* Escape a value for SQL.
* @param {*} value The value to escape
* @param {boolean} [stringifyObjects=false] Setting if objects should be stringified
* @param {string} [timeZone=local] Setting for time zone to use for Date conversion
* @return {string} Escaped string value
* @public
*/
exports.escape = function escape(value, stringifyObjects, timeZone) {
var SqlString = loadClass('SqlString');
return SqlString.escape(value, stringifyObjects, timeZone);
};
/**
* Escape an identifier for SQL.
* @param {*} value The value to escape
* @param {boolean} [forbidQualified=false] Setting to treat '.' as part of identifier
* @return {string} Escaped string value
* @public
*/
exports.escapeId = function escapeId(value, forbidQualified) {
var SqlString = loadClass('SqlString');
return SqlString.escapeId(value, forbidQualified);
};
/**
* Format SQL and replacement values into a SQL string.
* @param {string} sql The SQL for the query
* @param {array} [values] Any values to insert into placeholders in sql
* @param {boolean} [stringifyObjects=false] Setting if objects should be stringified
* @param {string} [timeZone=local] Setting for time zone to use for Date conversion
* @return {string} Formatted SQL string
* @public
*/
exports.format = function format(sql, values, stringifyObjects, timeZone) {
var SqlString = loadClass('SqlString');
return SqlString.format(sql, values, stringifyObjects, timeZone);
};
/**
* Wrap raw SQL strings from escape overriding.
* @param {string} sql The raw SQL
* @return {object} Wrapped object
* @public
*/
exports.raw = function raw(sql) {
var SqlString = loadClass('SqlString');
return SqlString.raw(sql);
};
/**
* The type constants.
* @public
*/
Object.defineProperty(exports, 'Types', {
get: loadClass.bind(null, 'Types')
});
/**
* Load the given class.
* @param {string} className Name of class to default
* @return {function|object} Class constructor or exports
* @private
*/
function loadClass(className) {
var Class = Classes[className];
if (Class !== undefined) {
return Class;
}
// This uses a switch for static require analysis
switch (className) {
case 'Connection':
Class = require('./lib/Connection');
break;
case 'ConnectionConfig':
Class = require('./lib/ConnectionConfig');
break;
case 'Pool':
Class = require('./lib/Pool');
break;
case 'PoolCluster':
Class = require('./lib/PoolCluster');
break;
case 'PoolConfig':
Class = require('./lib/PoolConfig');
break;
case 'SqlString':
Class = require('./lib/protocol/SqlString');
break;
case 'Types':
Class = require('./lib/protocol/constants/types');
break;
default:
throw new Error('Cannot find class \'' + className + '\'');
}
// Store to prevent invoking require()
Classes[className] = Class;
return Class;
}
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