468 lines
16 KiB
C++
468 lines
16 KiB
C++
/**
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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_to_interval.h"
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#include "lib/ob_name_def.h"
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#include "lib/timezone/ob_time_convert.h"
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#include "sql/session/ob_sql_session_info.h"
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#include "sql/engine/expr/ob_expr_util.h"
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namespace oceanbase
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{
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using namespace common;
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using namespace share;
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namespace sql
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{
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static bool is_mul_overflow(int64_t x, int64_t y, int64_t &result)
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{
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result = x * y;
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return (x != 0) && result / x != y;
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}
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ObExprToYMInterval::ObExprToYMInterval(ObIAllocator &alloc)
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: ObFuncExprOperator(alloc, T_FUN_SYS_TO_YMINTERVAL, N_TO_YMINTERVAL, 1, VALID_FOR_GENERATED_COL, NOT_ROW_DIMENSION)
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{
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}
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ObExprToYMInterval::~ObExprToYMInterval()
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{
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}
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int ObExprToYMInterval::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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UNUSED(type_ctx);
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type.set_interval_ym();
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type.set_scale(ObAccuracy::MAX_ACCURACY2[ORACLE_MODE][ObIntervalYMType].get_scale());
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type1.set_calc_type(ObVarcharType);
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const ObSQLSessionInfo *session = 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("session is NULL", K(ret));
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} else {
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ObSEArray<ObExprResType*, 1, ObNullAllocator> params;
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OZ(params.push_back(&type1));
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ObExprResType tmp_type;
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OZ(aggregate_string_type_and_charset_oracle(*session, params, tmp_type));
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OZ(deduce_string_param_calc_type_and_charset(*session, tmp_type, params));
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}
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return ret;
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}
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int ObExprToYMInterval::cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const
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{
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UNUSED(op_cg_ctx);
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UNUSED(raw_expr);
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int ret = OB_SUCCESS;
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if (rt_expr.arg_cnt_ != 1) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("to_yminterval expr should have one param", K(ret), K(rt_expr.arg_cnt_));
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} else if (OB_ISNULL(rt_expr.args_) || OB_ISNULL(rt_expr.args_[0])) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("children of to_yminterval expr is null", K(ret), K(rt_expr.args_));
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} else {
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rt_expr.eval_func_ = ObExprToYMInterval::calc_to_yminterval;
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}
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return ret;
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}
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int ObExprToYMInterval::calc_to_yminterval(const ObExpr &expr, ObEvalCtx &ctx,
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ObDatum &expr_datum)
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{
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int ret = OB_SUCCESS;
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ObDatum *param = NULL;
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if (OB_FAIL(expr.args_[0]->eval(ctx, param))) {
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LOG_WARN("calc first param failed", K(ret));
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} else if (param->is_null()) {
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expr_datum.set_null();
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} else {
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ObString str = param->get_string();
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ObIntervalYMValue value;
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ObScale max_scale = ObAccuracy::MAX_ACCURACY2[ORACLE_MODE][ObIntervalYMType].get_scale();
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ObScale scale = max_scale;
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if ((NULL == str.find('P')) ? //有P的是ISO格式
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OB_FAIL(ObTimeConverter::str_to_interval_ym(str, value, scale))
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: OB_FAIL(ObTimeConverter::iso_str_to_interval_ym(str, value))) {
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LOG_WARN("fail to convert string", K(ret), K(str));
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} else {
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expr_datum.set_interval_ym(value.get_nmonth());
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}
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}
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return ret;
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}
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ObExprToDSInterval::ObExprToDSInterval(ObIAllocator &alloc)
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: ObFuncExprOperator(alloc, T_FUN_SYS_TO_DSINTERVAL, N_TO_DSINTERVAL, 1, VALID_FOR_GENERATED_COL, NOT_ROW_DIMENSION)
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{
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}
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ObExprToDSInterval::~ObExprToDSInterval()
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{
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}
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int ObExprToDSInterval::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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UNUSED(type_ctx);
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type.set_interval_ds();
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type.set_scale(ObAccuracy::MAX_ACCURACY2[ORACLE_MODE][ObIntervalDSType].get_scale());
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type1.set_calc_type(ObVarcharType);
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const ObSQLSessionInfo *session = 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("session is NULL", K(ret));
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} else {
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ObSEArray<ObExprResType*, 1, ObNullAllocator> params;
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OZ(params.push_back(&type1));
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ObExprResType tmp_type;
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OZ(aggregate_string_type_and_charset_oracle(*session, params, tmp_type));
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OZ(deduce_string_param_calc_type_and_charset(*session, tmp_type, params));
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}
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return ret;
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}
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int ObExprToDSInterval::cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const
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{
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UNUSED(op_cg_ctx);
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UNUSED(raw_expr);
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int ret = OB_SUCCESS;
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if (rt_expr.arg_cnt_ != 1) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("to_dsinterval expr should have one param", K(ret), K(rt_expr.arg_cnt_));
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} else if (OB_ISNULL(rt_expr.args_) || OB_ISNULL(rt_expr.args_[0])) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("children of to_dsinterval expr is null", K(ret), K(rt_expr.args_));
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} else {
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rt_expr.eval_func_ = ObExprToDSInterval::calc_to_dsinterval;
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}
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return ret;
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}
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int ObExprToDSInterval::calc_to_dsinterval(const ObExpr &expr, ObEvalCtx &ctx,
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ObDatum &expr_datum)
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{
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int ret = OB_SUCCESS;
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ObDatum *param = NULL;
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if (OB_FAIL(expr.args_[0]->eval(ctx, param))) {
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LOG_WARN("calc first param failed", K(ret));
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} else if (param->is_null()) {
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expr_datum.set_null();
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} else {
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ObString str = param->get_string();
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ObIntervalDSValue value;
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ObScale max_scale = ObAccuracy::MAX_ACCURACY2[ORACLE_MODE][ObIntervalDSType].get_scale();
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ObScale scale = max_scale;
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if ((NULL == str.find('P')) ? //有P的是ISO格式
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OB_FAIL(ObTimeConverter::str_to_interval_ds(str, value, scale))
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: OB_FAIL(ObTimeConverter::iso_str_to_interval_ds(str, value))) {
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LOG_WARN("fail to convert string", K(ret), K(str));
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} else {
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expr_datum.set_interval_ds(value);
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}
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}
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return ret;
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}
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ObExprNumToYMInterval::ObExprNumToYMInterval(ObIAllocator &alloc)
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: ObFuncExprOperator(alloc, T_FUN_SYS_NUMTOYMINTERVAL, N_NUMTOYMINTERVAL, 2, VALID_FOR_GENERATED_COL, NOT_ROW_DIMENSION)
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{
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}
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ObExprNumToYMInterval::~ObExprNumToYMInterval()
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{
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}
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int ObExprNumToYMInterval::calc_result_type2(ObExprResType &type,
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ObExprResType &type1,
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ObExprResType &type2,
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ObExprTypeCtx &type_ctx) const
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{
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int ret = OB_SUCCESS;
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UNUSED(type_ctx);
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type.set_interval_ym();
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type.set_scale(ObAccuracy::MAX_ACCURACY2[ORACLE_MODE][ObIntervalYMType].get_scale());
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type1.set_calc_type(ObNumberType);
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type1.set_calc_scale(ORA_NUMBER_SCALE_UNKNOWN_YET);
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type2.set_calc_type(ObVarcharType);
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const ObSQLSessionInfo *session = 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("session is NULL", K(ret));
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} else {
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ObSEArray<ObExprResType*, 1, ObNullAllocator> params;
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OZ(params.push_back(&type2));
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ObExprResType tmp_type;
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OZ(aggregate_string_type_and_charset_oracle(*session, params, tmp_type));
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OZ(deduce_string_param_calc_type_and_charset(*session, tmp_type, params));
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}
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return ret;
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}
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template <class T>
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int ObExprNumToYMInterval::calc_result_common(const T &obj1,
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const T &obj2,
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ObIAllocator &calc_buf,
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ObIntervalYMValue &ym_value)
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{
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int ret = OB_SUCCESS;
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const number::ObNumber num_n = obj1.get_number();
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ObString unit = obj2.get_string();
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int64_t nmonth = 0;
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int64_t mul_f = 0;
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unit = unit.trim();
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if (0 == unit.case_compare(ob_date_unit_type_str(DATE_UNIT_YEAR))) {
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mul_f = ObIntervalYMValue::MONTHS_IN_YEAR;
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} else if (0 == unit.case_compare(ob_date_unit_type_str(DATE_UNIT_MONTH))) {
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mul_f = 1;
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} else {
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ret = OB_ERR_ILLEGAL_ARGUMENT_FOR_FUNCTION;
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LOG_WARN("illegal argument for function", K(ret), K(unit));
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}
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if (OB_SUCC(ret)) {
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int64_t n = 0;
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if (num_n.is_valid_int64(n)) {
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//如果是整数，短路径
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if (OB_UNLIKELY(is_mul_overflow(mul_f, n, nmonth))) {
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ret = OB_ERR_THE_LEADING_PRECISION_OF_THE_INTERVAL_IS_TOO_SMALL;
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LOG_WARN("mul size overflow", K(ret));
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}
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} else {
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number::ObNumber month_per_year;
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number::ObNumber num_result;
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ObNumStackOnceAlloc tmp_alloc;
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if (mul_f == 1) {
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if (OB_FAIL(num_result.from(num_n, tmp_alloc))) {
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LOG_WARN("copy num failed", K(ret));
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}
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} else {
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if (OB_FAIL(month_per_year.from(mul_f, calc_buf))) {
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LOG_WARN("number from failed", K(ret));
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} else if (OB_FAIL(num_n.mul(month_per_year, num_result, calc_buf))) {
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LOG_WARN("number mul failed", K(ret));
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}
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}
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if (OB_SUCC(ret)) {
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if (OB_FAIL(num_result.round(0))) {
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LOG_WARN("number found failed", K(ret));
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} else if (OB_UNLIKELY(!num_result.is_valid_int64(nmonth))) {
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ret = OB_ERR_THE_LEADING_PRECISION_OF_THE_INTERVAL_IS_TOO_SMALL;
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LOG_WARN("number should be valid int64", K(ret));
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}
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}
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}
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}
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if (OB_SUCC(ret)) {
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ym_value.nmonth_ = nmonth;
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if (OB_FAIL(ym_value.validate())) {
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LOG_WARN("fail to validate interval", K(ret), K(ym_value));
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}
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}
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return ret;
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}
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int ObExprNumToYMInterval::cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const
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{
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UNUSED(op_cg_ctx);
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UNUSED(raw_expr);
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int ret = OB_SUCCESS;
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if (rt_expr.arg_cnt_ != 2) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("num_to_yminterval expr should have two params", K(ret), K(rt_expr.arg_cnt_));
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} else if (OB_ISNULL(rt_expr.args_) || OB_ISNULL(rt_expr.args_[0])
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|| OB_ISNULL(rt_expr.args_[1])) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("children of num_to_yminterval expr is null", K(ret), K(rt_expr.args_));
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} else {
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rt_expr.eval_func_ = ObExprNumToYMInterval::calc_num_to_yminterval;
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}
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return ret;
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}
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int ObExprNumToYMInterval::calc_num_to_yminterval(const ObExpr &expr, ObEvalCtx &ctx,
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ObDatum &expr_datum)
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{
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int ret = OB_SUCCESS;
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ObDatum *param1 = NULL;
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ObDatum *param2 = NULL;
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ObIntervalYMValue ym_value;
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ObEvalCtx::TempAllocGuard alloc_guard(ctx);
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if (OB_FAIL(expr.args_[0]->eval(ctx, param1))) {
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LOG_WARN("calc first param failed", K(ret));
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} else if (param1->is_null()) {
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expr_datum.set_null();
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} else if (OB_FAIL(expr.args_[1]->eval(ctx, param2))) {
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LOG_WARN("calc second param failed", K(ret));
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} else if (param2->is_null()) {
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expr_datum.set_null();
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} else if (OB_FAIL(calc_result_common(*param1, *param2, alloc_guard.get_allocator(), ym_value))) {
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LOG_WARN("calc result failed", K(ret));
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} else {
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expr_datum.set_interval_ym(ym_value.get_nmonth());
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}
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return ret;
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}
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ObExprNumToDSInterval::ObExprNumToDSInterval(ObIAllocator &alloc)
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: ObFuncExprOperator(alloc, T_FUN_SYS_NUMTODSINTERVAL, N_NUMTODSINTERVAL, 2, VALID_FOR_GENERATED_COL, NOT_ROW_DIMENSION)
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{
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}
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ObExprNumToDSInterval::~ObExprNumToDSInterval()
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{
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}
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int ObExprNumToDSInterval::calc_result_type2(ObExprResType &type,
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ObExprResType &type1,
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ObExprResType &type2,
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ObExprTypeCtx &type_ctx) const
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{
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int ret = OB_SUCCESS;
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UNUSED(type_ctx);
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type.set_interval_ds();
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type.set_scale(ObAccuracy::MAX_ACCURACY2[ORACLE_MODE][ObIntervalDSType].get_scale());
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type1.set_calc_type(ObNumberType);
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type1.set_calc_scale(ORA_NUMBER_SCALE_UNKNOWN_YET);
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type2.set_calc_type(ObVarcharType);
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const ObSQLSessionInfo *session = 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("session is NULL", K(ret));
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} else {
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ObSEArray<ObExprResType*, 1, ObNullAllocator> params;
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OZ(params.push_back(&type2));
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ObExprResType tmp_type;
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OZ(aggregate_string_type_and_charset_oracle(*session, params, tmp_type));
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OZ(deduce_string_param_calc_type_and_charset(*session, tmp_type, params));
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}
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return ret;
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}
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template <class R, class T>
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int ObExprNumToDSInterval::calc_result_common(R &result,
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const T &obj1,
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const T &obj2,
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ObIAllocator &calc_buf)
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{
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int ret = OB_SUCCESS;
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static int64_t mul_f[DATE_UNIT_DAY - DATE_UNIT_SECOND + 1] = {
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1,
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ObIntervalDSValue::SECONDS_IN_MINUTE,
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ObIntervalDSValue::SECONDS_IN_MINUTE * ObIntervalDSValue::MINUTES_IN_HOUR,
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ObIntervalDSValue::SECONDS_IN_MINUTE * ObIntervalDSValue::MINUTES_IN_HOUR * ObIntervalDSValue::HOURS_IN_DAY,
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};
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ObString unit = obj2.get_string();
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number::ObNumber num_n = obj1.get_number();
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int64_t nsecond = 0;
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int64_t fs = 0;
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int matched_idx = OB_INVALID_INDEX;
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unit = unit.trim();
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for (int i = DATE_UNIT_SECOND; i <= DATE_UNIT_DAY; ++i) {
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if (0 == unit.case_compare(ob_date_unit_type_str(static_cast<ObDateUnitType>(i)))) {
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matched_idx = i - DATE_UNIT_SECOND;
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break;
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}
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}
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if (OB_UNLIKELY(OB_INVALID_INDEX == matched_idx)) {
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ret = OB_ERR_ILLEGAL_ARGUMENT_FOR_FUNCTION;
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LOG_WARN("illegal argument for function", K(ret));
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} else {
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int64_t n = 0;
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if (num_n.is_valid_int64(n)) {
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//如果是整数，短路径
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if (OB_UNLIKELY(is_mul_overflow(mul_f[matched_idx], n, nsecond))) {
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ret = OB_ERR_THE_LEADING_PRECISION_OF_THE_INTERVAL_IS_TOO_SMALL;
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LOG_WARN("mul size overflow", K(ret));
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}
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} else {
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number::ObNumber num_mul_f;
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number::ObNumber num_nsecond;
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if (OB_FAIL(num_mul_f.from(mul_f[matched_idx], calc_buf))) {
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LOG_WARN("number from failed", K(ret));
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} else if (OB_FAIL(num_n.mul(num_mul_f, num_nsecond, calc_buf))) {
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LOG_WARN("number mul failed", K(ret));
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} else if (OB_FAIL(num_nsecond.round(MAX_SCALE_FOR_ORACLE_TEMPORAL))) {
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LOG_WARN("number round failed", K(ret));
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} else if (OB_UNLIKELY(!num_nsecond.is_int_parts_valid_int64(nsecond, fs))) {
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ret = OB_ERR_THE_LEADING_PRECISION_OF_THE_INTERVAL_IS_TOO_SMALL;
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LOG_WARN("number should be valid int64", K(ret));
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}
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}
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}
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if (OB_SUCC(ret)) {
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if (nsecond < 0) {
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fs = -fs;
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}
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ObIntervalDSValue value = ObIntervalDSValue(nsecond, static_cast<int32_t>(fs));
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if (OB_FAIL(value.validate())) {
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LOG_WARN("invalid interval result", K(ret), K(value));
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} else {
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result.set_interval_ds(value);
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}
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}
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return ret;
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}
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int ObExprNumToDSInterval::cg_expr(ObExprCGCtx &op_cg_ctx,
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const ObRawExpr &raw_expr,
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ObExpr &rt_expr) const
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{
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UNUSED(op_cg_ctx);
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UNUSED(raw_expr);
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int ret = OB_SUCCESS;
|
|
if (rt_expr.arg_cnt_ != 2) {
|
|
ret = OB_INVALID_ARGUMENT;
|
|
LOG_WARN("num_to_dsinterval expr should have two params", K(ret), K(rt_expr.arg_cnt_));
|
|
} else if (OB_ISNULL(rt_expr.args_) || OB_ISNULL(rt_expr.args_[0])
|
|
|| OB_ISNULL(rt_expr.args_[1])) {
|
|
ret = OB_ERR_UNEXPECTED;
|
|
LOG_WARN("children of num_to_dsinterval expr is null", K(ret), K(rt_expr.args_));
|
|
} else {
|
|
rt_expr.eval_func_ = ObExprNumToDSInterval::calc_num_to_dsinterval;
|
|
}
|
|
return ret;
|
|
}
|
|
int ObExprNumToDSInterval::calc_num_to_dsinterval(const ObExpr &expr, ObEvalCtx &ctx,
|
|
ObDatum &expr_datum)
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
ObDatum *param1 = NULL;
|
|
ObDatum *param2 = NULL;
|
|
ObEvalCtx::TempAllocGuard alloc_guard(ctx);
|
|
if (OB_FAIL(expr.args_[0]->eval(ctx, param1))) {
|
|
LOG_WARN("calc first param failed", K(ret));
|
|
} else if (param1->is_null()) {
|
|
expr_datum.set_null();
|
|
} else if (OB_FAIL(expr.args_[1]->eval(ctx, param2))) {
|
|
LOG_WARN("calc second param failed", K(ret));
|
|
} else if (param2->is_null()) {
|
|
expr_datum.set_null();
|
|
} else if (OB_FAIL(calc_result_common(expr_datum, *param1, *param2, alloc_guard.get_allocator()))) {
|
|
LOG_WARN("calc result failed", K(ret));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
} //namespace sql
|
|
} //namespace oceanbase
|