renamed constructor to klass; added method for chaining queries and waiting for them to end

src/Sequelize.js

@@ -49,6 +49,17 @@ var classMethods = {
     }
     
     return SequelizeHelper.evaluateTemplate(query, values)
+  },
+  chainQueries: function(queries, callback) {
+    var executeQuery = function(index) {
+      queries[index](function() {
+        if(queries.length > (index + 1))
+          executeQuery(index + 1)
+        else
+          if (callback) callback()
+      })
+    }
+    executeQuery(0)
   }
 }
 
@@ -66,11 +77,14 @@ Sequelize.prototype = {
     var tables = this.tables
 
     SequelizeHelper.Hash.forEach(tables, function(table) {
-      table.constructor.prepareAssociations()
+      table.klass.prepareAssociations()
     })
 
+    if(SequelizeHelper.Hash.keys(tables).length == 0)
+      callback()
+    else
       SequelizeHelper.Hash.forEach(tables, function(table) {
-      table.constructor.sync(function() {
+        table.klass.sync(function() {
           finished.push(true)
           if(finished.length == SequelizeHelper.Hash.keys(tables).length)
             callback()
@@ -82,8 +96,12 @@ Sequelize.prototype = {
     var finished = []
     var tables = this.tables
 
+    if(SequelizeHelper.Hash.keys(tables).length == 0)
+      callback()
+    else
       SequelizeHelper.Hash.forEach(tables, function(table, tableName) {
-      table.constructor.drop(function() {
+        SequelizeHelper.log(table)
+        table.klass.drop(function() {
           finished.push(true)
           if(finished.length == SequelizeHelper.Hash.keys(tables).length)
             callback()
@@ -98,7 +116,7 @@ Sequelize.prototype = {
     var table = new SequelizeTable(this, SequelizeHelper.SQL.asTableName(name), attributes)
     table.attributes = attributes
 
-    this.tables[name] = {constructor: table, attributes: attributes}
+    this.tables[name] = {klass: table, attributes: attributes}
 
     table.sequelize = this
     return table
@@ -135,16 +153,6 @@ Sequelize.prototype = {
           })
         connection.close()
       })
-  },
-  waitForQueries: function(queries, callback) {
-    var finishedQueries = 0
-    queries.forEach(function(query) {
-      query(function() {
-        finishedQueries++
-        if(finishedQueries == queries.length)
-          callback()
-      })
-    })
   }
 }
 

src/SequelizeTable.js

@@ -134,7 +134,7 @@ SequelizeTable = function(sequelize, tableName, attributes) {
       // don't check inside of method to increase performance
       if(_table.isCrossAssociatedWith(table)) {
         table.prototype[assocName] = function(callback) {
-          var Association = sequelize.tables[SequelizeHelper.SQL.manyToManyTableName(_table, table)].constructor
+          var Association = sequelize.tables[SequelizeHelper.SQL.manyToManyTableName(_table, table)].klass
           var whereConditions = [table.identifier, this.id].join("=")
           Association.findAll({ where: whereConditions }, function(result) {
             if(result.length > 0) {
@@ -146,7 +146,8 @@ SequelizeTable = function(sequelize, tableName, attributes) {
           })
         }
         table.prototype[SequelizeHelper.SQL.addPrefix('add', assocName)] = function(object, callback) {
-          var Association = sequelize.tables[SequelizeHelper.SQL.manyToManyTableName(_table, table)].constructor
+          SequelizeHelper.log(SequelizeHelper.Hash.keys(sequelize.tables))
+          var Association = sequelize.tables[SequelizeHelper.SQL.manyToManyTableName(_table, table)].klass
           if(object instanceof _table) {
             if((this.id != null) && (object.id != null)) {
               var attributes = {}
@@ -161,7 +162,7 @@ SequelizeTable = function(sequelize, tableName, attributes) {
           }
         }
         table.prototype[SequelizeHelper.SQL.addPrefix('remove', assocName)] = function(object, callback) {
-          var Association = sequelize.tables[SequelizeHelper.SQL.manyToManyTableName(_table, table)].constructor
+          var Association = sequelize.tables[SequelizeHelper.SQL.manyToManyTableName(_table, table)].klass
           if(object instanceof _table) {
             if((this.id != null) && (object.id != null)) {
               var attributes = {}