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patch 4.0

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This commit is contained in:
wangzelin.wzl
2022-10-24 10:34:53 +08:00
parent 4ad6e00ec3
commit 93a1074b0c
10533 changed files with 2588271 additions and 2299373 deletions
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63
src/sql/engine/expr/ob_expr_user.cpp
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@ -23,22 +23,30 @@
using namespace oceanbase::common;
using namespace oceanbase::sql;
namespace oceanbase {
namespace sql {
namespace oceanbase
{
namespace sql
{
ObExprUser::ObExprUser(ObIAllocator& alloc) : ObFuncExprOperator(alloc, T_FUN_SYS_USER, N_USER, 0, NOT_ROW_DIMENSION)
{}
ObExprUser::ObExprUser(ObIAllocator &alloc)
: ObFuncExprOperator(alloc, T_FUN_SYS_USER, N_USER, 0, NOT_ROW_DIMENSION)
{
}
ObExprUser::~ObExprUser()
{}
{
}
int ObExprUser::calc_result_type0(ObExprResType& type, ObExprTypeCtx& type_ctx) const
int ObExprUser::calc_result_type0(ObExprResType &type,
ObExprTypeCtx &type_ctx) const
{
UNUSED(type_ctx);
if (share::is_oracle_mode()) {
// FIXME: This function returns a VARCHAR2 value in oracle mode.
if (lib::is_oracle_mode()) {
// FIXME @linshen: This function returns a VARCHAR2 value in oracle mode.
// https://docs.oracle.com/en/database/oracle/oracle-database/18/sqlrf/USER.html#GUID-AD0B927B-EFD4-4246-89B4-2D55AB3AF531
// `Oracle Database compares values of this function with blank-padded comparison semantics.`
// 这个比较行为是 char 的比较行为, 由于 OB 目前比较行为是跟类型关联的, 没有单独的变量控制, 所以这里返回 char.
type.set_char();
// DEFAULT for oracle
type.set_collation_type(CS_TYPE_UTF8MB4_BIN);
@ -47,39 +55,19 @@ int ObExprUser::calc_result_type0(ObExprResType& type, ObExprTypeCtx& type_ctx)
type.set_default_collation_type();
}
type.set_collation_level(CS_LEVEL_SYSCONST);
type.set_length(static_cast<ObLength>((OB_MAX_HOST_NAME_LENGTH + OB_MAX_USER_NAME_LENGTH + 1)));
const ObLengthSemantics default_length_semantics =
(OB_NOT_NULL(type_ctx.get_session()) ? type_ctx.get_session()->get_actual_nls_length_semantics() : LS_BYTE);
type.set_length(static_cast<ObLength>((OB_MAX_HOST_NAME_LENGTH
+ OB_MAX_USER_NAME_LENGTH + 1)));
const ObLengthSemantics default_length_semantics = (OB_NOT_NULL(type_ctx.get_session()) ? type_ctx.get_session()->get_actual_nls_length_semantics() : LS_BYTE);
type.set_length_semantics(default_length_semantics);
return OB_SUCCESS;
}
int ObExprUser::calc_result0(ObObj& result, ObExprCtx& expr_ctx) const
{
int ret = OB_SUCCESS;
const ObSQLSessionInfo* session_info = NULL;
if (OB_ISNULL(session_info = expr_ctx.my_session_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("session info is null", K(ret));
} else {
if (share::is_oracle_mode()) {
const ObString session_user = session_info->get_user_name();
result.set_char(session_user);
result.set_collation(result_type_);
} else {
const ObString session_user = session_info->get_user_at_client_ip();
result.set_varchar(session_user);
result.set_collation(result_type_);
}
}
return ret;
}
int ObExprUser::eval_user(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum)
int ObExprUser::eval_user(const ObExpr &expr, ObEvalCtx &ctx,
ObDatum &expr_datum)
{
int ret = OB_SUCCESS;
UNUSED(expr);
const ObBasicSessionInfo* session_info = NULL;
const ObBasicSessionInfo *session_info = NULL;
if (OB_ISNULL(session_info = ctx.exec_ctx_.get_my_session())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("session info is null", K(ret));
@ -93,12 +81,13 @@ int ObExprUser::eval_user(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datu
return ret;
}
int ObExprUser::cg_expr(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const
int ObExprUser::cg_expr(ObExprCGCtx &op_cg_ctx, const ObRawExpr &raw_expr,
ObExpr &rt_expr) const
{
UNUSED(raw_expr);
UNUSED(op_cg_ctx);
rt_expr.eval_func_ = ObExprUser::eval_user;
return OB_SUCCESS;
}
} // namespace sql
} // namespace oceanbase
}/* ns sql*/
}/* ns oceanbase */