private void VisitOutput(IExpressionVisitor visitor, ReturningClause returning)
{
if (returning == null)
{
return;
}
visitor.Output.AppendLine();
visitor.Output.Append("OUTPUT ");
if (returning.Members == null || returning.Members.Count == 0)
{
visitor.Output.Append("DELETED.*");
}
else
{
int index = 0;
foreach (var member in returning.Members)
{
if (index++ > 0)
{
visitor.Output.Append(",");
}
visitor.Output.Append((member.Mode == ReturningClause.ReturningMode.Deleted ? "DELETED." : "INSERTED.") + member.Field.Name);
}
}
if (returning.Table != null)
{
visitor.Output.Append(" INTO ");
visitor.Output.Append(visitor.Dialect.GetIdentifier(returning.Table.Identifier()));
}
}
private void VisitOutput(ExpressionVisitorContext context, ReturningClause returning)
{
if (returning == null)
{
return;
}
context.WriteLine();
context.Write("OUTPUT ");
if (returning.Members == null || returning.Members.Count == 0)
{
context.Write("INSERTED.*");
}
else
{
int index = 0;
foreach (var member in returning.Members)
{
if (index++ > 0)
{
context.Write(",");
}
context.Write((member.Mode == ReturningClause.ReturningMode.Deleted ? "DELETED." : "INSERTED.") + member.Field.Name);
}
}
if (returning.Table != null)
{
context.Write(" INTO ");
context.Write(context.Dialect.GetIdentifier(returning.Table.Identifier()));
}
}
protected override void VisitReturning(IExpressionVisitor visitor, ReturningClause returning)
{
/*
* 由于 MySQL 的 INSERT 语句不支持 RETURN|RETURNING 子句，故不输出任何内容，且不调用基类同名方法以避免生成错误的语句。
*/
}
protected override void VisitReturning(IExpressionVisitor visitor, ReturningClause returning, UpdateStatement statement)
{
/*
* 由于 MySQL 的 UPDATE 语句不支持 RETURN|RETURNING 子句，故不输出任何内容，且不调用基类同名方法以避免生成错误的语句。
*/
}
