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314
src/sql/engine/expr/ob_expr_func_ceil.cpp
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314
src/sql/engine/expr/ob_expr_func_ceil.cpp
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/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#define USING_LOG_PREFIX SQL_ENG
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#include "sql/engine/expr/ob_expr_func_ceil.h"
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#include <string.h>
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#include "share/object/ob_obj_cast.h"
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#include "sql/parser/ob_item_type.h"
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#include "sql/engine/expr/ob_expr_result_type_util.h"
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#include "sql/engine/expr/ob_expr_util.h"
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#include "sql/session/ob_sql_session_info.h"
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namespace oceanbase {
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using namespace common;
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using namespace share;
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namespace sql {
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ObExprCeilFloor::ObExprCeilFloor(
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ObIAllocator& alloc, ObExprOperatorType type, const char* name, int32_t param_num, int32_t dimension)
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: ObFuncExprOperator(alloc, type, name, param_num, dimension)
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{}
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ObExprCeilFloor::~ObExprCeilFloor()
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{}
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int ObExprCeilFloor::calc_result_type1(ObExprResType& type, ObExprResType& type1, ObExprTypeCtx& type_ctx) const
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{
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int ret = OB_SUCCESS;
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ObObjType res_type = ObMaxType;
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if (is_oracle_mode()) {
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if (OB_FAIL(ObExprResultTypeUtil::get_round_result_type(res_type, type1.get_type()))) {
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LOG_WARN("get round result type failed", K(ret), K(type1), K(res_type));
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} else {
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type.set_type(res_type);
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type.set_scale(NUMBER_SCALE_UNKNOWN_YET);
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type.set_precision(PRECISION_UNKNOWN_YET);
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type.set_calc_scale(0);
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if (!type1.is_oracle_decimal()) {
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type1.set_calc_type(ObNumberType);
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} else {
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type1.set_calc_type(type1.get_type());
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if (ObNumberTC == ob_obj_type_class(type1.get_calc_type())) {
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type1.set_calc_accuracy(ObAccuracy::MAX_ACCURACY2[ORACLE_MODE][ObNumberType]);
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}
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}
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}
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} else {
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if (type1.is_column() && type1.is_number()) {
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type.set_number();
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int16_t prec = type1.get_precision();
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int16_t scale = type1.get_scale();
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type.set_number();
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// to be compatible with mysql.
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if (scale > 0) {
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if (prec - scale <= MAX_LIMIT_WITH_SCALE)
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type.set_int();
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} else if (prec <= MAX_LIMIT_WITHOUT_SCALE) {
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type.set_int();
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}
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} else {
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if (OB_FAIL(ObExprResultTypeUtil::get_round_result_type(res_type, type1.get_type()))) {
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LOG_WARN("get round result type failed", K(ret), K(type1), K(res_type));
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} else if (ObMaxType == res_type) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("unexpected result type", K(ret), K(type1), K(res_type));
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} else {
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type.set_type(res_type);
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const ObSQLSessionInfo* session = dynamic_cast<const ObSQLSessionInfo*>(type_ctx.get_session());
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if (OB_ISNULL(session)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("cast basic session to sql session info failed", K(ret));
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} else {
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type1.set_calc_type(res_type);
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}
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}
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}
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// no need to test ret here
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// scale
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type.set_scale(0);
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type.set_precision(type1.get_precision());
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}
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ObExprOperator::calc_result_flag1(type, type1);
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return ret;
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}
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int ObExprCeilFloor::calc_result1(ObObj& result, const ObObj& input, ObExprCtx& expr_ctx, bool is_ceil) const
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{
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int ret = OB_SUCCESS;
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if (NULL == expr_ctx.calc_buf_) {
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ret = OB_NOT_INIT;
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LOG_WARN("varchar buffer not init", K(ret));
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} else if (input.is_null()) {
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result.set_null();
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} else {
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ObObjType type = input.get_type();
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if (is_oracle_mode()) {
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if (input.is_float()) {
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if (is_ceil) {
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result.set_float(ceilf(input.get_float()));
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} else {
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result.set_float(floorf(input.get_float()));
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}
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} else if (input.is_double()) {
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if (is_ceil) {
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result.set_double(ceil(input.get_double()));
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} else {
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result.set_double(floor(input.get_double()));
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}
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} else if (input.is_number()) {
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number::ObNumber tmp_number;
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int64_t scale = 0;
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if (OB_FAIL(tmp_number.from(input.get_number(), *expr_ctx.calc_buf_))) {
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LOG_WARN("copy number fail", K(ret));
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} else if (OB_FAIL(is_ceil ? tmp_number.ceil(scale) : tmp_number.floor(scale))) {
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LOG_WARN("get ceil/floor(number) failed", K(is_ceil), K(ret));
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} else {
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result.set_number(tmp_number);
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}
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} else {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("unexpected type", K(input), K(ret));
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}
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LOG_DEBUG("finish ceil/floor", K(is_ceil), K(input), K(result), K(ret));
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} else {
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ObObj input_copy = input;
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if (type != result_type_.get_type() && !(ObNumberType == type && ObIntType == result_type_.get_type())) {
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ObCastMode cast_mode = get_cast_mode();
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EXPR_DEFINE_CAST_CTX(expr_ctx, cast_mode);
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cast_ctx.expect_obj_collation_ = cast_ctx.dest_collation_;
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if (OB_FAIL(ObObjCaster::to_type(result_type_.get_type(), cast_ctx, input, input_copy))) {
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LOG_WARN("fail to convert type", K(ret), K(result_type_), K(input));
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}
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}
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type = input_copy.get_type();
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if (OB_SUCC(ret)) {
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if (ob_is_int_tc(type)) {
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result.set_int(input_copy.get_int());
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} else if (ob_is_uint_tc(type)) {
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result.set_uint64(input_copy.get_uint64());
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} else if (ob_is_double_tc(type)) {
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result.set_double(is_ceil ? ceil(input_copy.get_double()) : floor(input_copy.get_double()));
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} else if (ob_is_number_tc(type)) {
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number::ObNumber num = input_copy.get_number();
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number::ObNumber tmp_number;
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int64_t scale = 0;
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if (OB_FAIL(tmp_number.from(num, *expr_ctx.calc_buf_))) {
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LOG_WARN("copy number fail", K(ret));
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} else if (OB_FAIL(is_ceil ? tmp_number.ceil(scale) : tmp_number.floor(scale))) {
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LOG_WARN("get ceil/floor(number) failed", K(is_ceil), K(ret));
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} else if (ob_is_number_tc(result_type_.get_type())) {
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result.set_type(result_type_.get_type());
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result.set_number_value(tmp_number);
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} else {
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int64_t res_int = 0;
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if (tmp_number.is_valid_int64(res_int)) {
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result.set_int(res_int);
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} else {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("unexpected input number value", K(ret), K(input_copy), K(result_type_));
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}
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}
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} else {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("invalid input type", K(ret), K(type));
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}
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}
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}
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}
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return ret;
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}
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int calc_ceil_floor(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& res_datum)
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{
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int ret = OB_SUCCESS;
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ObDatum* arg_datum = NULL;
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if (OB_FAIL(expr.args_[0]->eval(ctx, arg_datum))) {
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LOG_WARN("eval arg 0 failed", K(ret), K(expr));
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} else if (arg_datum->is_null()) {
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res_datum.set_null();
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} else {
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const ObObjType arg_type = expr.args_[0]->datum_meta_.type_;
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const ObObjType res_type = expr.datum_meta_.type_;
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const bool is_floor = (T_FUN_SYS_FLOOR == expr.type_) ? true : false;
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if (ObNumberTC == ob_obj_type_class(arg_type)) {
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ObNumStackOnceAlloc tmp_alloc;
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const number::ObNumber arg_nmb(arg_datum->get_number());
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number::ObNumber res_nmb;
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if (OB_FAIL(res_nmb.from(arg_nmb, tmp_alloc))) {
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LOG_WARN("get number from arg failed", K(ret), K(arg_nmb));
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} else {
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if (is_floor) {
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if (OB_FAIL(res_nmb.floor(0))) {
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LOG_WARN("calc floor for number failed", K(ret), K(res_nmb));
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}
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} else {
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if (OB_FAIL(res_nmb.ceil(0))) {
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LOG_WARN("calc ceil for number failed", K(ret), K(res_nmb));
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}
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}
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if (OB_SUCC(ret)) {
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if (ObNumberTC == ob_obj_type_class(res_type)) {
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res_datum.set_number(res_nmb);
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} else if (ob_is_integer_type(res_type)) {
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int64_t res_int = 0;
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if (res_nmb.is_valid_int64(res_int)) {
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res_datum.set_int(res_int);
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} else {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("unexpected res type", K(ret), K(res_type));
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}
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}
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}
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}
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} else if (ob_is_integer_type(arg_type) && ob_is_integer_type(res_type)) {
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res_datum.set_int(arg_datum->get_int());
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} else if (ObFloatType == arg_type && ObFloatType == res_type) {
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if (is_floor) {
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res_datum.set_float(floorf(arg_datum->get_float()));
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} else {
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res_datum.set_float(ceilf(arg_datum->get_float()));
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}
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} else if (ObDoubleType == arg_type && ObDoubleType == res_type) {
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if (is_floor) {
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res_datum.set_double(floor(arg_datum->get_double()));
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} else {
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res_datum.set_double(ceil(arg_datum->get_double()));
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}
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} else {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("unexpected res type or arg type", K(ret), K(res_type), K(arg_type));
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}
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}
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return ret;
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}
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int ObExprCeilFloor::cg_expr(ObExprCGCtx& expr_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const
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{
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int ret = OB_SUCCESS;
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UNUSED(expr_cg_ctx);
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UNUSED(raw_expr);
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rt_expr.eval_func_ = calc_ceil_floor;
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return ret;
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}
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// func ceil()
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ObExprFuncCeil::ObExprFuncCeil(ObIAllocator& alloc)
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: ObExprCeilFloor(alloc, T_FUN_SYS_CEIL, "ceil", 1, NOT_ROW_DIMENSION)
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{}
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ObExprFuncCeil::~ObExprFuncCeil()
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{}
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int ObExprFuncCeil::calc_result_type1(ObExprResType& type, ObExprResType& type1, common::ObExprTypeCtx& type_ctx) const
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{
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return ObExprCeilFloor::calc_result_type1(type, type1, type_ctx);
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}
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int ObExprFuncCeil::calc_result1(ObObj& result, const ObObj& input, ObExprCtx& expr_ctx) const
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{
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return ObExprCeilFloor::calc_result1(result, input, expr_ctx, true);
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}
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// func ceiling()
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ObExprFuncCeiling::ObExprFuncCeiling(ObIAllocator& alloc)
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: ObExprCeilFloor(alloc, T_FUN_SYS_CEILING, "ceiling", 1, NOT_ROW_DIMENSION)
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{}
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ObExprFuncCeiling::~ObExprFuncCeiling()
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{}
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int ObExprFuncCeiling::calc_result_type1(
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ObExprResType& type, ObExprResType& type1, common::ObExprTypeCtx& type_ctx) const
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{
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return ObExprCeilFloor::calc_result_type1(type, type1, type_ctx);
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}
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int ObExprFuncCeiling::calc_result1(ObObj& result, const ObObj& input, ObExprCtx& expr_ctx) const
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{
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return ObExprCeilFloor::calc_result1(result, input, expr_ctx, true);
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}
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ObExprFuncFloor::ObExprFuncFloor(ObIAllocator& alloc)
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: ObExprCeilFloor(alloc, T_FUN_SYS_FLOOR, "floor", 1, NOT_ROW_DIMENSION)
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{}
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// func floor()
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ObExprFuncFloor::~ObExprFuncFloor()
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{}
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int ObExprFuncFloor::calc_result_type1(ObExprResType& type, ObExprResType& type1, common::ObExprTypeCtx& type_ctx) const
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{
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return ObExprCeilFloor::calc_result_type1(type, type1, type_ctx);
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}
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int ObExprFuncFloor::calc_result1(ObObj& result, const ObObj& input, ObExprCtx& expr_ctx) const
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{
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return ObExprCeilFloor::calc_result1(result, input, expr_ctx, false);
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}
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} // namespace sql
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} // namespace oceanbase
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