132 lines
4.2 KiB
C++
132 lines
4.2 KiB
C++
/**
|
|
* Copyright (c) 2021 OceanBase
|
|
* OceanBase CE is licensed under Mulan PubL v2.
|
|
* You can use this software according to the terms and conditions of the Mulan PubL v2.
|
|
* You may obtain a copy of Mulan PubL v2 at:
|
|
* http://license.coscl.org.cn/MulanPubL-2.0
|
|
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
|
|
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
|
|
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
|
|
* See the Mulan PubL v2 for more details.
|
|
*/
|
|
|
|
#define USING_LOG_PREFIX SQL_ENG
|
|
#include "sql/engine/expr/ob_expr_cardinality.h"
|
|
#include "objit/common/ob_item_type.h"
|
|
#include "share/object/ob_obj_cast.h"
|
|
#include "sql/session/ob_sql_session_info.h"
|
|
#include "sql/engine/ob_exec_context.h"
|
|
#include "share/schema/ob_schema_struct.h"
|
|
#include "pl/ob_pl_allocator.h"
|
|
#include "sql/engine/expr/ob_expr_multiset.h"
|
|
|
|
using namespace oceanbase::common;
|
|
using namespace oceanbase::sql;
|
|
|
|
namespace oceanbase
|
|
{
|
|
namespace sql
|
|
{
|
|
}
|
|
}
|
|
|
|
ObExprCardinality::ObExprCardinality(ObIAllocator &alloc)
|
|
:ObFuncExprOperator(alloc, T_FUN_SYS_CARDINALITY, N_CARDINALITY, 1, NOT_VALID_FOR_GENERATED_COL, NOT_ROW_DIMENSION)
|
|
{
|
|
}
|
|
|
|
ObExprCardinality::~ObExprCardinality()
|
|
{
|
|
}
|
|
|
|
int ObExprCardinality::assign(const ObExprOperator &other)
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
if (other.get_type() != T_OP_SET) {
|
|
ret = OB_ERR_UNEXPECTED;
|
|
LOG_WARN("expr operator is mismatch", K(other.get_type()));
|
|
} else if (OB_FAIL(ObExprOperator::assign(other))) {
|
|
LOG_WARN("assign parent expr failed", K(ret));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int ObExprCardinality::calc_result_type1(ObExprResType &type,
|
|
ObExprResType &type1,
|
|
ObExprTypeCtx &type_ctx) const
|
|
{
|
|
UNUSED(type_ctx);
|
|
int ret = OB_SUCCESS;
|
|
if (lib::is_oracle_mode()) {
|
|
if (type1.is_ext()) {
|
|
type.set_number();
|
|
type.set_scale(common::ObAccuracy::DDL_DEFAULT_ACCURACY[common::ObNumberType].scale_);
|
|
type.set_precision(common::ObAccuracy::DDL_DEFAULT_ACCURACY[common::ObNumberType].precision_);
|
|
type.set_calc_type(common::ObNumberType);
|
|
} else {
|
|
ret = OB_ERR_WRONG_TYPE_FOR_VAR;
|
|
LOG_WARN("PLS-00306: wrong number or types of arguments in call stmt",
|
|
K(ret), K(type1));
|
|
}
|
|
} else {
|
|
ret = OB_ERR_WRONG_TYPE_FOR_VAR;
|
|
LOG_WARN("PLS-00306: wrong number or types of arguments in call stmt",
|
|
K(ret), K(type1));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int ObExprCardinality::cg_expr(ObExprCGCtx &expr_cg_ctx,
|
|
const ObRawExpr &raw_expr,
|
|
ObExpr &rt_expr) const
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
UNUSED(expr_cg_ctx);
|
|
UNUSED(raw_expr);
|
|
rt_expr.eval_func_ = eval_card;
|
|
return ret;
|
|
}
|
|
|
|
int ObExprCardinality::eval_card(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res)
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
ObDatum *datum = nullptr;
|
|
ObObj obj;
|
|
ObObj result;
|
|
CK (1 == expr.arg_cnt_);
|
|
if (OB_FAIL(ret)) {
|
|
} else if (OB_FAIL(expr.eval_param_value(ctx, datum))) {
|
|
LOG_WARN("failed to eval param value", K(ret));
|
|
} else if (OB_FAIL(datum->to_obj(obj, expr.args_[0]->obj_meta_))) {
|
|
LOG_WARN("failed to convert tp obj", K(ret));
|
|
} else if (lib::is_oracle_mode() && obj.get_meta().is_ext()) {
|
|
pl::ObPLCollection *c1 = reinterpret_cast<pl::ObPLCollection *>(obj.get_ext());
|
|
int64_t elem_count = 0;
|
|
if (OB_ISNULL(c1)) {
|
|
ret = OB_ERR_UNEXPECTED;
|
|
LOG_WARN("union udt failed due to null udt", K(ret), K(obj));
|
|
} else if (pl::PL_NESTED_TABLE_TYPE != c1->get_type()) {
|
|
ret = OB_ERR_WRONG_TYPE_FOR_VAR;
|
|
LOG_WARN("PLS-00306: wrong number or types of arguments in call stmt",
|
|
K(ret), K(c1->get_type()));
|
|
} else {
|
|
if (!c1->is_inited()) {
|
|
result.set_null();
|
|
} else {
|
|
elem_count = c1->get_actual_count();
|
|
number::ObNumber cardinality;
|
|
if (OB_FAIL(cardinality.from(elem_count, ctx.exec_ctx_.get_allocator()))) {
|
|
LOG_WARN("generator cardinality result failed.", K(ret));
|
|
} else {
|
|
result.set_number(cardinality);
|
|
}
|
|
}
|
|
if (OB_SUCC(ret)) {
|
|
OZ(res.from_obj(result, expr.obj_datum_map_));
|
|
OZ(expr.deep_copy_datum(ctx, res));
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|