MySql.Data.Entity.UpdateGenerator.GenerateSQL C# (CSharp) Method

    public override string GenerateSQL(DbCommandTree tree)
    {
      DbUpdateCommandTree commandTree = tree as DbUpdateCommandTree;

      UpdateStatement statement = new UpdateStatement();

      _onReturningSelect = false;
      statement.Target = commandTree.Target.Expression.Accept(this);
      scope.Add("target", statement.Target as InputFragment);
      
      foreach (DbSetClause setClause in commandTree.SetClauses)
      {
        statement.Properties.Add(setClause.Property.Accept(this));
        DbExpression value = setClause.Value;
        SqlFragment valueFragment = value.Accept(this);
        statement.Values.Add(valueFragment);

        if (values == null)
          values = new Dictionary<EdmMember, SqlFragment>();

        if (value.ExpressionKind != DbExpressionKind.Null)
        {
          EdmMember property = ((DbPropertyExpression)setClause.Property).Property;
          values.Add(property, valueFragment);
        }
      }
      
      statement.Where = commandTree.Predicate.Accept(this);

      _onReturningSelect = true;
      if (commandTree.Returning != null)
        statement.ReturningSelect = GenerateReturningSql(commandTree, commandTree.Returning);

      return statement.ToString();
    }

        public override string GenerateProcedureBody(ICollection <DbModificationCommandTree> commandTrees, string rowsAffectedParameter, string providerManifestToken)
        {
            MySqlConnection    con  = new MySqlConnection();
            MigrationStatement stmt = new MigrationStatement();

            _providerManifest = DbProviderServices.GetProviderServices(con).GetProviderManifest(providerManifestToken);

            var          cmdStr    = "";
            SqlGenerator generator = new SelectGenerator();

            foreach (var commandTree in commandTrees)
            {
                switch (commandTree.CommandTreeKind)
                {
                case DbCommandTreeKind.Insert:
                    generator = new InsertGenerator();
                    cmdStr    = generator.GenerateSQL(commandTree);
                    break;

                case DbCommandTreeKind.Delete:
                    generator = new DeleteGenerator();
                    cmdStr    = generator.GenerateSQL(commandTree);
                    break;

                case DbCommandTreeKind.Update:
                    generator = new UpdateGenerator();
                    cmdStr    = generator.GenerateSQL(commandTree);
                    break;

                case DbCommandTreeKind.Query:
                    generator = new SelectGenerator();
                    cmdStr    = generator.GenerateSQL(commandTree);
                    break;

                case DbCommandTreeKind.Function:
                    generator = new FunctionGenerator();
                    cmdStr    = generator.GenerateSQL(commandTree);
                    break;
                }
                stmt.Sql += cmdStr.Replace("dbo.", "") + ";";
            }
            return(stmt.Sql);
        }