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1668 lines (1365 loc) · 36.5 KB
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var database = require('mssql');
var Events = require('events');
var Parser = require('url');
var queries = {};
var columns_cache = {};
var pools_cache = {};
require('./index');
function SqlBuilder(skip, take) {
this.builder = [];
this._order = null;
this._skip = skip >= 0 ? skip : 0;
this._take = take >= 0 ? take : 0;
this._set = null;
this._define;
this._fn;
this._join;
this._fields;
this._schema;
this._primary;
this._is = false;
this.hasOperator = false;
}
SqlBuilder.prototype = {
get data() {
return this._set;
}
};
SqlBuilder.prototype.replace = function(builder) {
var self = this;
self.builder = builder.builder;
self._order = builder._order;
self._skip = builder._skip;
self._take = builder._take;
self._set = builder._set;
self._fn = builder._fn;
self._join = builder._join;
self._fields = builder._fields;
self._schema = builder._schema;
self._primary = builder._primary;
self._is = builder._is;
self.hasOperator = builder.hasOperator;
return self;
};
SqlBuilder.prototype.clone = function() {
var builder = new SqlBuilder();
return builder.replace(this);
};
SqlBuilder.prototype.join = function(name, on, type) {
var self = this;
if (!self._join)
self._join = [];
if (!type)
type = 'left'
if (self._schema && name.lastIndexOf(' ') === -1)
name += ' ' + self._schema;
self._join.push(type + ' join ' + name + ' on ' + on);
return self;
};
SqlBuilder.prototype.schema = function(name) {
this._schema = name;
return this;
};
SqlBuilder.prototype.remove = SqlBuilder.prototype.rem = function(name) {
if (this._set)
delete this._set[name]
return this;
};
SqlBuilder.prototype.prepare = function(query) {
if (this._skip === 0 && this._take > 0)
return query.replace(/select/i, 'SELECT TOP ' + this._take);
return query;
};
SqlBuilder.prototype.define = function(name, type) {
var self = this;
if (!self._define)
self._define = {};
self._define[name] = type;
return self;
};
SqlBuilder.prototype.set = function(name, value) {
var self = this;
if (!self._set)
self._set = {};
if (typeof(name) === 'string') {
self._set[name] = value === '$' ? '#00#' : value;
return self;
}
var keys = Object.keys(name);
for (var i = 0, length = keys.length; i < length; i++) {
var key = keys[i];
var val = name[key];
self._set[key] = val === '$' ? '#00#' : val;
}
return self;
};
SqlBuilder.prototype.raw = function(name, value) {
var self = this;
if (!self._set)
self._set = {};
self._set['!' + name] = value;
return self;
};
SqlBuilder.prototype.inc = function(name, type, value) {
var self = this;
var can = false;
if (!self._set)
self._set = {};
if (value === undefined) {
value = type;
type = '+';
can = true;
}
if (typeof(name) === 'string') {
if (can && typeof(value) === 'string') {
type = value[0];
value = parseInt(value.substring(1));
if (isNaN(value))
return self;
}
name = type + name;
self._set[name] = value === '$' ? '#00#' : value;
return self;
}
var keys = Object.keys(name);
for (var i = 0, length = keys.length; i < length; i++) {
var key = keys[i];
var val = name[key];
if (can && typeof(val) === 'string') {
type = val[0];
val = parseInt(val.substring(1));
if (isNaN(val))
continue;
}
key = type + key;
self._set[key] = val === '$' ? '#00#' : val;
}
return self;
};
SqlBuilder.prototype.sort = function(name, desc) {
return this.order(name, desc);
};
SqlBuilder.prototype.order = function(name, desc) {
var self = this;
if (self._order === null)
self._order = [];
var lowered = name.toLowerCase();
if (lowered.lastIndexOf('desc') !== -1 || lowered.lastIndexOf('asc') !== -1) {
self._order.push(SqlBuilder.column(name, self._schema));
return self;
} else if (typeof(desc) === 'boolean')
desc = desc === true ? 'DESC' : 'ASC';
else
desc = 'ASC';
self._order.push(SqlBuilder.column(name, self._schema) + ' ' + desc);
return self;
};
SqlBuilder.prototype.skip = function(value) {
var self = this;
self._skip = self.parseInt(value);
return self;
};
SqlBuilder.prototype.limit = function(value) {
return this.take(value);
};
SqlBuilder.prototype.page = function(value, max) {
var self = this;
value = self.parseInt(value) - 1;
max = self.parseInt(max);
if (value < 0)
value = 0;
self._skip = value * max;
self._take = max;
return self;
};
SqlBuilder.prototype.parseInt = function(num) {
if (typeof(num) === 'number')
return num;
if (!num)
return 0;
num = parseInt(num);
if (isNaN(num))
num = 0;
return num;
};
SqlBuilder.prototype.take = function(value) {
var self = this;
self._take = self.parseInt(value);
return self;
};
SqlBuilder.prototype.first = function() {
var self = this;
self._skip = 0;
self._take = 1;
return self;
};
SqlBuilder.prototype.where = function(name, operator, value) {
return this.push(name, operator, value);
};
SqlBuilder.prototype.push = function(name, operator, value) {
var self = this;
if (value === undefined) {
value = operator;
operator = '=';
} else if (operator === '!=')
operator = '<>';
var is = false;
// I expect Agent.$$
if (typeof(value) === 'function') {
if (!self._fn)
self._fn = {};
var key = Math.floor(Math.random() * 1000000);
self._fn[key] = value;
value = '#' + key + '#';
is = true;
}
self.checkOperator();
self.builder.push(SqlBuilder.column(name, self._schema) + operator + (is ? value : SqlBuilder.escape(value)));
self._is = true;
return self;
};
SqlBuilder.prototype.checkOperator = function() {
var self = this;
if (!self.hasOperator)
self.and();
self.hasOperator = false;
return self;
};
SqlBuilder.prototype.clear = function() {
this._take = 0;
this._skip = 0;
this._order = null;
this._set = null;
this.builder = [];
this.hasOperator = false;
return this;
};
SqlBuilder.prototype.fields = function() {
var self = this;
if (!self._fields)
self._fields = '';
if (arguments[0] instanceof Array) {
var arr = arguments[0];
for (var i = 0, length = arr.length; i < length; i++)
self._fields += (self._fields ? ',' : '') + SqlBuilder.column(arr[i], self._schema);
return self;
}
for (var i = 0; i < arguments.length; i++)
self._fields += (self._fields ? ',' : '') + SqlBuilder.column(arguments[i], self._schema);
return self;
};
SqlBuilder.prototype.field = function(name) {
var self = this;
if (!self._fields)
self._fields = '';
self._fields += (self._fields ? ',' : '') + SqlBuilder.column(name, self._schema);
return self;
};
SqlBuilder.escape = function(value) {
if (value === null || value === undefined)
return 'null';
var type = typeof(value);
if (type === 'function') {
value = value();
if (value === null || value === undefined)
return 'null';
type = typeof(value);
}
if (type === 'boolean')
return value === true ? '1' : '0';
if (type === 'number')
return value.toString();
if (type === 'string')
return SqlBuilder.escaper(value);
if (value instanceof Array)
return SqlBuilder.escaper(value.join(','));
if (value instanceof Date)
return dateToString(value);
return SqlBuilder.escaper(value.toString());
};
SqlBuilder.escaper = function(value) {
return "'" + value.replace(/\'/g, '\'\'') + "'";
};
SqlBuilder.column = function(name, schema) {
var cachekey = (schema ? schema + '.' : '') + name;
var val = columns_cache[cachekey];
if (val)
return val;
var indexAS = name.toLowerCase().indexOf(' as');
var plus = '';
if (indexAS !== -1) {
plus = name.substring(indexAS);
name = name.substring(0, indexAS);
}
var index = name.indexOf('.');
if (index === -1)
return columns_cache[cachekey] = (schema ? schema + '.' : '') + '[' + name + ']' + plus;
return columns_cache[cachekey] = name.substring(0, index) + '.[' + name.substring(index + 1) + ']' + plus;
};
SqlBuilder.column = function(name, schema) {
var cachekey = (schema ? schema + '.' : '') + name;
var val = columns_cache[cachekey];
if (val)
return val;
var raw = false;
if (name[0] === '!') {
raw = true;
name = name.replace(/^(\!{1,}|\s)*/, '');
}
var index = name.lastIndexOf('-->');
var cast = '';
var casting = function(value) {
if (!cast)
return value;
return 'CAST(' + value + cast + ')';
};
if (index !== -1) {
cast = name.substring(index).replace('-->', '').trim();
name = name.substring(0, index).trim();
switch (cast) {
case 'integer':
case 'int':
case 'byte':
case 'smallint':
case 'number':
cast = 'INT';
break;
case 'float':
case 'real':
case 'double':
case 'decimal':
case 'currency':
cast = 'REAL';
break;
case 'boolean':
case 'bool':
cast = 'BIT';
break;
}
cast = ' AS ' + cast;
}
var indexAS = name.toLowerCase().indexOf(' as');
var plus = '';
if (indexAS !== -1) {
plus = name.substring(indexAS);
name = name.substring(0, indexAS);
}
if (raw)
return columns_cache[cachekey] = casting(name) + plus;
name = name.replace(/\[|\]/g, '');
index = name.indexOf('.');
if (index === -1)
return columns_cache[cachekey] = casting((schema ? schema + '.' : '') + '[' + name + ']') + plus;
return columns_cache[cachekey] = casting(name.substring(0, index) + '.[' + name.substring(index + 1) + ']') + plus;
};
SqlBuilder.prototype.group = function(names) {
var self = this;
self.builder.push('GROUP BY ' + (names instanceof Array ? names.join(',') : SqlBuilder.column(names, self._schema)));
return self;
};
SqlBuilder.prototype.having = function(condition) {
var self = this;
self.builder.push('HAVING ' + condition);
return self;
};
SqlBuilder.prototype.and = function() {
var self = this;
if (self.builder.length === 0)
return self;
self.hasOperator = true;
self.builder.push('AND');
return self;
};
SqlBuilder.prototype.or = function() {
var self = this;
if (self.builder.length === 0)
return self;
self.hasOperator = true;
self.builder.push('OR');
return self;
};
SqlBuilder.prototype.scope = function(fn) {
var self = this;
self.checkOperator();
self.builder.push('(');
self.hasOperator = true;
fn.call(self);
self.builder.push(')');
return self;
};
SqlBuilder.prototype.in = function(name, value) {
var self = this;
if (!(value instanceof Array)) {
self.where(name, value);
return self;
}
self.checkOperator();
var values = [];
for (var i = 0, length = value.length; i < length; i++)
values.push(SqlBuilder.escape(value[i]));
self.builder.push(SqlBuilder.column(name, self._schema) + ' IN (' + values.join(',') + ')');
self._is = true;
return self;
};
SqlBuilder.prototype.like = function(name, value, where) {
var self = this;
var search;
self.checkOperator();
switch (where) {
case 'beg':
case 'begin':
search = SqlBuilder.escape('%' + value);
break;
case '*':
search = SqlBuilder.escape('%' + value + '%');
break;
case 'end':
search = SqlBuilder.escape(value + '%');
break;
default:
search = SqlBuilder.escape(value);
break;
}
self.builder.push(SqlBuilder.column(name, self._schema) + ' LIKE ' + search);
self._is = true;
return self;
};
SqlBuilder.prototype.between = function(name, valueA, valueB) {
var self = this;
self.checkOperator();
self.builder.push(SqlBuilder.column(name, self._schema) + ' BETWEEN ' + SqlBuilder.escape(valueA) + ' AND ' + SqlBuilder.escape(valueB));
self._is = true;
return self;
};
SqlBuilder.prototype.sql = function(sql) {
var self = this;
self.checkOperator();
if (arguments.length > 1) {
var indexer = 1;
var argv = arguments;
sql = sql.replace(/\?/g, function() {
return SqlBuilder.escape(argv[indexer++]);
});
}
self.builder.push(sql);
self._is = true;
return self;
};
SqlBuilder.prototype.toString = function(id) {
var self = this;
var plus = '';
var order = '';
var join = '';
if (self._join)
join = self._join.join(' ') + ' ';
if (self._order)
order = ' ORDER BY ' + self._order.join(',');
if (self._skip > 0 && self._take > 0)
plus = ' OFFSET ' + self._skip + ' ROWS FETCH NEXT ' + self._take + ' ROWS ONLY';
else if (self._take > 0)
plus = ' FETCH NEXT ' + self._take + ' ROWS ONLY';
else if (self._skip > 0)
plus = ' OFFSET ' + self._skip + ' ROWS';
if (!self._order && plus.length > 0)
throw new Error('ORDER BY is missing.');
if (self.builder.length === 0)
return (join ? join + ' ' : '') + order + plus;
var where = self.builder.join(' ');
if (id === undefined || id === null)
id = null;
if (self._fn) {
where = where.replace(/\#\d+\#/g, function(text) {
if (text === '#00#')
return SqlBuilder.escape(id);
var output = self._fn[parseInt(text.substring(1, text.length - 1))];
return SqlBuilder.escape(output);
});
}
return (join ? ' ' + join : '') + (self._is ? ' WHERE ' : ' ') + where + order + plus;
};
SqlBuilder.prototype.make = function(fn) {
var self = this;
fn.call(self, self)
return self;
};
SqlBuilder.prototype.toQuery = function(query) {
var self = this;
if (!self._fields)
return query;
return query.replace(/\*/i, self._fields);
};
function Agent(options, error, id) {
this.$conn = id === undefined ? JSON.stringify(options) : id;
this.options = options;
this.command = [];
this.db = null;
this.done = null;
this.last = null;
this.id = null;
this.$id = null;
this.isCanceled = false;
this.index = 0;
this.isPut = false;
this.skipCount = 0;
this.skips = {};
this.isErrorBuilder = typeof(global.ErrorBuilder) !== 'undefined' ? true : false;
this.errors = this.isErrorBuilder ? error : null;
this.time;
this.$transaction;
this.$fast = false;
this.results;
}
Agent.prototype = {
get $() {
return new SqlBuilder();
},
get $$() {
var self = this;
return function() {
return self.$id;
};
}
};
Agent.prototype.__proto__ = Object.create(Events.EventEmitter.prototype, {
constructor: {
value: Agent,
enumberable: false
}
});
// Debug mode (output to console)
Agent.debug = false;
Agent.query = function(name, query) {
queries[name] = query;
return Agent;
};
Agent.prototype.nolock = function(enable) {
if (enable === undefined)
this.$fast = true;
else
this.$fast = false;
return this;
};
Agent.prototype.primaryKey = Agent.prototype.primary = function(name) {
// compatibility with PG
return this;
};
Agent.prototype.skip = function(name) {
var self = this;
if (!name) {
self.skipCount++;
return self;
}
self.skips[name] = true;
return self;
};
Agent.prototype.prepare = function(fn) {
var self = this;
self.command.push({ type: 'prepare', fn: fn });
return self;
};
Agent.prototype.bookmark = function(fn) {
var self = this;
self.command.push({ type: 'bookmark', fn: fn });
return self;
};
Agent.prototype.put = function(value) {
var self = this;
self.command.push({ type: 'put', params: value, disable: value === undefined || value === null });
return self;
};
Agent.prototype.lock = function() {
return this.put(this.$$);
};
Agent.prototype.unlock = function() {
this.command.push({ 'type': 'unput' });
return this;
};
Agent.prototype.query = function(name, query, params) {
return this.push(name, query, params);
};
Agent.prototype.push = function(name, query, params) {
var self = this;
if (typeof(query) !== 'string') {
params = query;
query = name;
name = self.index++;
}
var is = false;
if (!params) {
is = true;
params = new SqlBuilder();
}
if (queries[query])
query = queries[query];
self.command.push({ name: name, query: query, params: params, first: isFIRST(query) });
return is ? params : self;
};
Agent.prototype.validate = function(fn, error, reverse) {
var self = this;
var type = typeof(fn);
if (typeof(error) === 'boolean') {
reverse = error;
error = undefined;
}
if (type === 'string' && error === undefined) {
// checks the last result
error = fn;
fn = undefined;
}
if (type === 'function') {
self.command.push({ type: 'validate', fn: fn, error: error });
return self;
}
var exec;
if (reverse) {
exec = function(err, results, next) {
var id = fn === undefined || fn === null ? self.last : fn;
if (id === null || id === undefined)
return next(true);
var r = results[id];
if (r instanceof Array)
return next(!r.length);
if (!r)
return next(true);
next(true);
};
} else {
exec = function(err, results, next) {
var id = fn === undefined || fn === null ? self.last : fn;
if (id === null || id === undefined)
return next(false);
var r = results[id];
if (r instanceof Array)
return next(r.length > 0);
if (r)
return next(true);
next(false);
};
}
self.command.push({ type: 'validate', fn: exec, error: error });
return self;
};
Agent.prototype.cancel = function(fn) {
return this.validate(fn);
};
Agent.prototype.begin = function() {
var self = this;
self.command.push({ type: 'begin' });
return self;
};
Agent.prototype.end = function() {
var self = this;
self.command.push({ type: 'end' });
return self;
};
Agent.prototype.commit = function() {
return this.end();
};
function prepareValue(value) {
if (value === undefined || value === null)
return null;
var type = typeof(value);
if (type === 'function')
return value();
if (type === 'string')
return value.trim();
return value;
}
Agent.prototype._insert = function(item) {
var self = this;
var name = item.name;
var values = item.values;
var table = item.table;
var isPrepare = false;
if (values instanceof SqlBuilder) {
isPrepare = values._define ? true : false;
values = values._set;
}
var keys = Object.keys(values);
var columns = [];
var columns_values = [];
var params = [];
var index = 1;
for (var i = 0, length = keys.length; i < length; i++) {
var key = keys[i];
var value = values[key];
var isRAW = key[0] === '!';
if (isRAW)
key = key.substring(1);
if (item.without && item.without.indexOf(key) !== -1)
continue;
if (key[0] === '$')
continue;
columns.push('[' + key + ']');
if (isRAW) {
columns_values.push(value);
continue;
}
columns_values.push('@' + key);
var type = typeof(value);
var isFN = false;
if (type === 'function')
value = value();
if (type === 'string')
value = value.trim();
if (type === 'function')
isFN = true;
if (type === 'object') {
if (Buffer.isBuffer(value))
type = 'varbinary';
else if (typeof(value.getTime) === 'function')
type = 'datetime';
}
if (isPrepare) {
if (item.values._define[key])
type = item.values._define[key];
}
params.push({ name: key, type: type, value: value === undefined ? null : value, isFN: isFN });
}
return { type: item.type, name: name, query: 'INSERT INTO ' + table + ' (' + columns.join(',') + ') VALUES(' + columns_values.join(',') + '); SELECT @@identity AS [identity]', params: params, first: true };
};
Agent.prototype._update = function(item) {
var name = item.name;
var values = item.values;
if (values instanceof SqlBuilder)
values = values._set;
var condition = item.condition;
var table = item.table;
var keys = Object.keys(values);
var columns = [];
var params = [];
var index = 1;
for (var i = 0, length = keys.length; i < length; i++) {
var key = keys[i];
var value = values[key];
var isRAW = key[0] === '!';
if (isRAW)
key = key.substring(1);
if (item.without && item.without.indexOf(key) !== -1)
continue;
if (key[0] === '$')
continue;
var type = typeof(value);
if (type === 'function')
value = value();
if (type === 'string')
value = value.trim();
switch (key[0]) {
case '+':
key = key.substring(1);
columns.push('[' + key + ']=ISNULL([' + key + '],0)+@' + key);
break;
case '-':
key = key.substring(1);
columns.push('[' + key + ']=ISNULL([' + key + '],0)-@' + key);
break;
case '*':
key = key.substring(1);
columns.push('[' + key + ']=ISNULL([' + key + '],0)*@' + key);
break;
case '/':
key = key.substring(1);
columns.push('[' + key + ']=ISNULL([' + key + '],0)/@' + key);
break;
default:
if (isRAW)
columns.push('[' + key + ']=' + value);
else
columns.push('[' + key + ']=@' + key);
break;
}
if (!isRAW)
params.push({ name: key, type: type, value: value === undefined ? null : value });
}
return { type: item.type, name: name, query: 'UPDATE ' + table + ' SET ' + columns.join(',') + condition.toString(this.id) + '; SELECT @@rowcount As affectedRows', params: params, first: true, column: 'affectedRows' };
};
Agent.prototype._select = function(item) {
return { name: item.name, query: item.condition.toQuery(item.query) + item.condition.toString(this.id), params: null, first: item.condition._take === 1, datatype: item.datatype };
};
Agent.prototype._delete = function(item) {
return { name: item.name, query: item.query + item.condition.toString(this.id) + '; SELECT @@rowcount As affectedRows', params: null, first: true, column: 'affectedRows' };
};
Agent.prototype.save = function(name, table, insert, maker) {
if (typeof(table) === 'boolean') {
maker = insert;
insert = table;
table = name;
name = undefined;
}
var self = this;
if (insert)
maker(self.insert(name, table), true);
else
maker(self.update(name, table), false);
return self;
};
Agent.prototype.insert = function(name, table, values, without) {
var self = this;
if (typeof(table) !== 'string') {
without = values;
values = table;
table = name;
name = self.index++;
}