Many-many association eager loading support for MySQL

lib/dialects/mysql/query-generator.js

@@ -187,6 +187,7 @@ module.exports = (function() {
 
 
           optAttributes = optAttributes.concat(attributes)
           optAttributes = optAttributes.concat(attributes)
 
 
+          if (include.association.associationType !== 'HasMany') {
             var table = include.daoFactory.tableName
             var table = include.daoFactory.tableName
             var as = include.as
             var as = include.as
             var tableLeft = ((include.association.associationType === 'BelongsTo') ? include.as : tableName)
             var tableLeft = ((include.association.associationType === 'BelongsTo') ? include.as : tableName)
@@ -194,7 +195,19 @@ module.exports = (function() {
             var tableRight = ((include.association.associationType === 'BelongsTo') ? tableName : include.as)
             var tableRight = ((include.association.associationType === 'BelongsTo') ? tableName : include.as)
             var attrRight = include.association.identifier
             var attrRight = include.association.identifier
             joinQuery += " LEFT OUTER JOIN " + this.quoteIdentifier(table) + " AS " + this.quoteIdentifier(as) + " ON " + this.quoteIdentifier(tableLeft) + "." + this.quoteIdentifier(attrLeft) + " = " + this.quoteIdentifier(tableRight) + "." + this.quoteIdentifier(attrRight)
             joinQuery += " LEFT OUTER JOIN " + this.quoteIdentifier(table) + " AS " + this.quoteIdentifier(as) + " ON " + this.quoteIdentifier(tableLeft) + "." + this.quoteIdentifier(attrLeft) + " = " + this.quoteIdentifier(tableRight) + "." + this.quoteIdentifier(attrRight)
-
+          } else {
+            var table = include.daoFactory.tableName
+            var as = include.as
+            var tableLeft = tableName
+            var identLeft = include.association.identifier
+            var attrLeft = 'id'
+            var tableRight = include.as
+            var identRight = include.association.foreignIdentifier
+            var attrRight = 'id'
+            var tableJunction = include.association.connectorDAO.tableName
+            joinQuery += " LEFT OUTER JOIN " + this.quoteIdentifier(tableJunction) + " ON " + this.quoteIdentifier(tableLeft) + "." + this.quoteIdentifier(attrLeft) + " = " + this.quoteIdentifier(tableJunction) + "." + this.quoteIdentifier(identLeft)
+            joinQuery += " LEFT OUTER JOIN " + this.quoteIdentifier(table) + " AS " + this.quoteIdentifier(as) + " ON " + this.quoteIdentifier(tableRight) + "." + this.quoteIdentifier(attrRight) + " = " + this.quoteIdentifier(tableJunction) + "." + this.quoteIdentifier(identRight)
+          }
         }.bind(this))
         }.bind(this))
 
 
         options.attributes = optAttributes.join(', ')
         options.attributes = optAttributes.join(', ')