435 lines
18 KiB
C++
435 lines
18 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 "lib/utility/ob_macro_utils.h"
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#include "sql/engine/expr/ob_expr_column_conv.h"
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#include "sql/engine/expr/ob_datum_cast.h"
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#include "sql/session/ob_sql_session_info.h"
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#include "common/sql_mode/ob_sql_mode_utils.h"
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#include "sql/engine/expr/ob_expr_type_to_str.h"
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#include "sql/engine/ob_exec_context.h"
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using namespace oceanbase::common;
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namespace oceanbase
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{
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namespace sql
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{
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ObFastColumnConvExpr::ObFastColumnConvExpr(ObIAllocator &alloc)
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: ObBaseExprColumnConv(alloc),
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ObFastExprOperator(T_FUN_COLUMN_CONV),
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column_type_(alloc),
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value_item_(),
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column_info_()
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{
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}
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int ObFastColumnConvExpr::assign(const ObFastExprOperator &other)
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{
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int ret = OB_SUCCESS;
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if (OB_UNLIKELY(other.get_op_type() != T_FUN_COLUMN_CONV)) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("invalid argument", K(other.get_op_type()));
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} else {
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const ObFastColumnConvExpr &other_conv = static_cast<const ObFastColumnConvExpr&>(other);
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column_type_ = other_conv.column_type_;
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value_item_ = other_conv.value_item_;
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if (OB_FAIL(ob_write_string(alloc_, other_conv.column_info_, column_info_))) {
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LOG_WARN("fail to set column info", K(ret));
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}
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}
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return ret;
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}
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int ObFastColumnConvExpr::calc(ObExprCtx &expr_ctx, const ObNewRow &row, ObObj &result) const
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{
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int ret = OB_SUCCESS;
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if (OB_UNLIKELY(OB_ISNULL(expr_ctx.my_session_))) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("expr context is invalid", K(ret), K(expr_ctx.my_session_), K(expr_ctx.phy_plan_ctx_));
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} else {
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bool is_strict = is_strict_mode(expr_ctx.my_session_->get_sql_mode());
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const ObObj *value = NULL;
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const ObString *column_info = NULL;
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if (has_column_info()) {
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column_info = &column_info_;
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}
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if (OB_FAIL(value_item_.get_item_value_directly(*expr_ctx.phy_plan_ctx_, row, value))) {
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LOG_WARN("get item value directly from value item failed", K(ret), K_(value_item));
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} else if (OB_FAIL(ObSqlExpressionUtil::expand_array_params(expr_ctx, *value, value))) {
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LOG_WARN("expand array params failed", K(ret));
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} else if (OB_FAIL(ObExprColumnConv::convert_skip_null_check(result, *value, column_type_,
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is_strict, expr_ctx.column_conv_ctx_,
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&str_values_, column_info))) {
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LOG_WARN("convert column value failed", K(ret), K(*this));
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}
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}
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return ret;
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}
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int ObFastColumnConvExpr::set_const_value(const ObObj &value)
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{
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int ret = OB_SUCCESS;
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ObObj tmp;
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if (OB_FAIL(ob_write_obj(alloc_, value, tmp))) {
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LOG_WARN("write const value failed", K(ret));
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} else if (OB_FAIL(value_item_.assign(tmp))) {
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LOG_WARN("write value item failed", K(ret));
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}
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return ret;
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}
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//由于在14x的版本中ObExprColumnConv使用的是父类ObExprOperator的序列化函数
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//为了保证兼容性，这里先序列化父类ObExprOperator的成员，再序列化自身的成员
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OB_SERIALIZE_MEMBER(ObExprColumnConv, row_dimension_, real_param_num_, result_type_, input_types_, id_, str_values_);
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ObExprColumnConv::ObExprColumnConv(ObIAllocator &alloc)
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: ObBaseExprColumnConv(alloc),
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ObFuncExprOperator(alloc, T_FUN_COLUMN_CONV, N_COLUMN_CONV, -1, NOT_ROW_DIMENSION,
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INTERNAL_IN_MYSQL_MODE, INTERNAL_IN_ORACLE_MODE)
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{
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disable_operand_auto_cast();
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//obexprcolumnconv有自己特殊处理，不走字符集自动转换框架
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need_charset_convert_ = false;
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}
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ObExprColumnConv::~ObExprColumnConv()
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{
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}
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int ObExprColumnConv::assign(const ObExprOperator &other)
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{
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int ret = OB_SUCCESS;
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const ObExprColumnConv *tmp_other = dynamic_cast<const ObExprColumnConv *>(&other);
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if (OB_UNLIKELY(NULL == tmp_other)) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("invalid argument. wrong type for other", K(ret), K(other));
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} else if (OB_LIKELY(this != tmp_other)) {
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if (OB_FAIL(ObFuncExprOperator::assign(other))) {
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LOG_WARN("copy in Base class ObFuncExprOperator failed", K(ret));
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} else if (tmp_other->str_values_.count() > 0 &&
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OB_FAIL(deep_copy_str_values(tmp_other->str_values_))) {
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LOG_WARN("copy str_values failed", K(ret));
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}
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}
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return ret;
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}
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int ObExprColumnConv::convert_with_null_check(ObObj &result,
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const ObObj &obj,
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const ObExprResType &res_type,
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bool is_strict,
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ObCastCtx &cast_ctx,
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const ObIArray<ObString> *type_infos)
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{
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int ret = OB_SUCCESS;
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bool is_not_null = res_type.is_not_null_for_write();
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if (OB_FAIL(ObExprColumnConv::convert_skip_null_check(result, obj, res_type, is_strict,
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cast_ctx, type_infos))) {
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LOG_WARN("fail to convert skip null check", K(ret));
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} else if (is_not_null && (result.is_null() || (lib::is_oracle_mode() && result.is_null_oracle()))) {
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ret = OB_BAD_NULL_ERROR;
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LOG_WARN("Column should not be null", K(ret));
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}
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return ret;
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}
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int ObExprColumnConv::convert_skip_null_check(ObObj &result,
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const ObObj &obj,
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const ObExprResType &res_type,
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bool is_strict,
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ObCastCtx &cast_ctx,
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const ObIArray<ObString> *type_infos,
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const ObString *column_info)
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{
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int ret = OB_SUCCESS;
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ObObjType type = res_type.get_type();
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const ObAccuracy &accuracy = res_type.get_accuracy();
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ObCollationType collation_type = res_type.get_collation_type();
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const ObObj *res_obj = NULL;
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cast_ctx.expect_obj_collation_ = collation_type;
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cast_ctx.dest_collation_ = collation_type;
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ObAccuracy tmp_accuracy = accuracy;
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cast_ctx.res_accuracy_ = &tmp_accuracy;
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if (OB_UNLIKELY(ob_is_enum_or_set_type(type))) {
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ObExpectType expect_type;
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expect_type.set_type(type);
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expect_type.set_collation_type(collation_type);
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expect_type.set_type_infos(type_infos);
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if (OB_FAIL(ObObjCaster::to_type(expect_type, cast_ctx, obj, result))) {
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LOG_WARN("fail to cast to enum or set", K(obj), K(expect_type), K(ret));
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} else {
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res_obj = &result;
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}
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} else if (OB_FAIL(ObObjCaster::to_type(type, cast_ctx, obj, result, res_obj)) || OB_ISNULL(res_obj)) {
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ret = COVER_SUCC(OB_ERR_UNEXPECTED);
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LOG_WARN("failed to cast object", K(ret), K(obj), "type", type);
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} else {
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LOG_DEBUG("succ to to_type", K(type), K(obj), K(result), K(collation_type));
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}
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if (OB_SUCC(ret)) {
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const int64_t max_accuracy_len = static_cast<int64_t>(res_type.
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get_accuracy().get_length());
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const int64_t str_len_byte = static_cast<int64_t>(result.get_string_len());
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if (OB_FAIL(obj_collation_check(is_strict, collation_type, *const_cast<ObObj*>(res_obj)))) {
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LOG_WARN("failed to check collation", K(ret), K(collation_type), KPC(res_obj));
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} else if (OB_FAIL(obj_accuracy_check(cast_ctx, accuracy, collation_type, *res_obj, result, res_obj))) {
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LOG_WARN("failed to check accuracy", K(ret), K(accuracy), K(collation_type), KPC(res_obj));
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if (OB_ERR_DATA_TOO_LONG == ret && lib::is_oracle_mode()
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&& OB_NOT_NULL(column_info) && !column_info->empty()) {
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ObString column_info_connection;
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ObArenaAllocator allocator;
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ObSQLUtils::copy_and_convert_string_charset(allocator, *column_info,
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column_info_connection, CS_TYPE_UTF8MB4_BIN,
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cast_ctx.dtc_params_.connection_collation_);
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LOG_ORACLE_USER_ERROR(OB_ERR_DATA_TOO_LONG_MSG_FMT_V2, column_info_connection.length(),
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column_info_connection.ptr(), str_len_byte, max_accuracy_len);
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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 (res_obj != &result) {
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//res_obj没有指向result的地址，需要将res_obj的值拷贝到result中
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result = *res_obj;
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}
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// if (is_not_null && (result.is_null() || (is_oracle_mode() && result.is_null_oracle()))) {
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// ret = OB_BAD_NULL_ERROR;
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// LOG_WARN("Column should not be null", K(ret));
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// }
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}
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return ret;
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}
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int ObExprColumnConv::calc_result_typeN(ObExprResType &type,
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ObExprResType *types,
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int64_t param_num,
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common::ObExprTypeCtx &type_ctx) const
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{
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int ret = common::OB_SUCCESS;
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//objs[0] type
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//objs[1] collation_type
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//objs[2] accuray_expr
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//objs[3] nullable_expr
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//objs[4] value
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//objs[5] column_info
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ObCollationType coll_type = CS_TYPE_INVALID;
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if (OB_ISNULL(type_ctx.get_session()) || OB_ISNULL(type_ctx.get_raw_expr())) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("session is NULL or raw expr is NULL", K(ret));
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} else if (OB_UNLIKELY(((PARAMS_COUNT_WITHOUT_COLUMN_INFO != param_num)
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&& (PARAMS_COUNT_WITH_COLUMN_INFO != param_num))
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|| OB_ISNULL(types))) {
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ret = OB_INVALID_ARGUMENT;
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SQL_ENG_LOG(WARN, "invalid argument, param_num should be 5 or 6",
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K(param_num), K(types), K(ret));
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} else if (OB_FAIL(type_ctx.get_session()->get_collation_connection(coll_type))) {
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SQL_ENG_LOG(WARN, "fail to get_collation_connection", K(coll_type), K(ret));
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} else {
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type.set_type(types[0].get_type());
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type.set_collation_type(types[1].get_collation_type());
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type.set_collation_level(common::CS_LEVEL_IMPLICIT);
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type.set_accuracy(types[2].get_accuracy());
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if (types[3].is_not_null_for_read()) {
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type.set_result_flag(NOT_NULL_FLAG | NOT_NULL_WRITE_FLAG);
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}
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bool enumset_to_varchar = false;
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//here will wrap type_to_str if necessary
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if (ob_is_enumset_tc(types[4].get_type())) {
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ObObjType calc_type = enumset_calc_types_[OBJ_TYPE_TO_CLASS[types[0].get_type()]];
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if (OB_UNLIKELY(ObMaxType == calc_type)) {
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ret = OB_ERR_UNEXPECTED;
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SQL_ENG_LOG(WARN, "invalid type of parameter ", K(types[4]), K(types), K(ret));
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} else if (ObVarcharType == calc_type) {
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enumset_to_varchar = true;
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types[4].set_calc_type(calc_type);
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types[4].set_calc_collation_type(coll_type);
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types[4].set_calc_collation_level(CS_LEVEL_IMPLICIT);
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type_ctx.set_cast_mode(type_ctx.get_cast_mode() | type_ctx.get_raw_expr()->get_extra());
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}
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}
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// for table modify in oracle mode, we ignore charset convert failed
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if (OB_SUCC(ret) && lib::is_oracle_mode()) {
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type_ctx.set_cast_mode(type_ctx.get_cast_mode() | CM_CHARSET_CONVERT_IGNORE_ERR);
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}
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if (OB_SUCC(ret) && !enumset_to_varchar) {
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//cast type when type not same.
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const ObObjTypeClass value_tc = ob_obj_type_class(types[4].get_type());
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const ObObjTypeClass type_tc = ob_obj_type_class(types[0].get_type());
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if (lib::is_oracle_mode()
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&& OB_UNLIKELY(!cast_supported(types[4].get_type(), types[4].get_collation_type(),
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types[0].get_type(), types[1].get_collation_type()))) {
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ret = OB_ERR_INVALID_TYPE_FOR_OP;
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LOG_WARN("inconsistent datatypes", "expected", type_tc, "got", value_tc);
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} else {
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type_ctx.set_cast_mode(
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type_ctx.get_cast_mode() | type_ctx.get_raw_expr()->get_extra() | CM_COLUMN_CONVERT);
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types[4].set_calc_meta(type);
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}
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}
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LOG_DEBUG("finish calc_result_typeN", K(type), K(types[4]), K(types[0]), K(enumset_to_varchar));
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}
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return ret;
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}
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int ObExprColumnConv::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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int ret = OB_SUCCESS;
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UNUSED(raw_expr);
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//compatible with old code
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CK((PARAMS_COUNT_WITHOUT_COLUMN_INFO == rt_expr.arg_cnt_)
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|| (PARAMS_COUNT_WITH_COLUMN_INFO == rt_expr.arg_cnt_));
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if (OB_ISNULL(op_cg_ctx.session_)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("exec ctx is null", K(ret));
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} else if (OB_FAIL(ObEnumSetInfo::init_enum_set_info(op_cg_ctx.allocator_, rt_expr, type_,
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raw_expr.get_extra(), str_values_))) {
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LOG_WARN("fail to init_enum_set_info", K(ret), K(type_), K(str_values_));
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} else {
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if (op_cg_ctx.session_->is_ignore_stmt()) {
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ObEnumSetInfo *enumset_info = static_cast<ObEnumSetInfo *>(rt_expr.extra_info_);
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enumset_info->cast_mode_ = enumset_info->cast_mode_ | CM_WARN_ON_FAIL
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| CM_CHARSET_CONVERT_IGNORE_ERR;
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}
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rt_expr.eval_func_ = column_convert;
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}
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return ret;
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}
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int ObExprColumnConv::column_convert(const ObExpr &expr,
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ObEvalCtx &ctx,
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ObDatum &datum)
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{
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int ret = OB_SUCCESS;
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int warning = OB_SUCCESS;
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if (OB_ISNULL(expr.extra_info_)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("extra_info_ is unexpected", K(ret), KP(expr.extra_info_));
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} else {
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const ObEnumSetInfo *enumset_info = static_cast<ObEnumSetInfo *>(expr.extra_info_);
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const uint64_t cast_mode = enumset_info->cast_mode_;
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bool is_strict = CM_IS_STRICT_MODE(cast_mode);
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ObObjType out_type = expr.datum_meta_.type_;
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ObCollationType out_cs_type = expr.datum_meta_.cs_type_;
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ObDatum *val = NULL;
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if (ob_is_enum_or_set_type(out_type) && !expr.args_[4]->obj_meta_.is_enum_or_set()) {
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ObExpr *old_expr = expr.args_[0];
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expr.args_[0] = expr.args_[4];
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if (OB_FAIL(expr.eval_enumset(ctx, enumset_info->str_values_, cast_mode, val))) {
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LOG_WARN("fail to eval_enumset", KPC(enumset_info), K(ret));
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}
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expr.args_[0] = old_expr;
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} else {
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if (OB_FAIL(expr.args_[4]->eval(ctx, val))) {
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LOG_WARN("evaluate parameter failed", K(ret));
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}
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}
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if (OB_FAIL(ret)) {
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} else if (val->is_null()) {
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datum.set_null();
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} else {
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if (ob_is_string_type(out_type)) {
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ObString str = val->get_string();
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if (OB_FAIL(string_collation_check(is_strict, out_cs_type, out_type, str))) {
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LOG_WARN("fail to check collation", K(ret), K(str), K(is_strict), K(expr));
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} else {
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val->set_string(str);
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}
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}
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if (OB_SUCC(ret)) {
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const int64_t max_accuracy_len = static_cast<int64_t>(expr.max_length_);
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const int64_t str_len_byte = static_cast<int64_t>(val->len_);
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if (OB_FAIL(datum_accuracy_check(expr,
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cast_mode,
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ctx,
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*val,
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datum,
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warning))) {
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LOG_WARN("fail to check accuracy", K(ret), K(expr), K(warning));
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//compatible with old code
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if (OB_ERR_DATA_TOO_LONG == ret && lib::is_oracle_mode()
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&& PARAMS_COUNT_WITH_COLUMN_INFO == expr.arg_cnt_) {
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ObString column_info_str;
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ObDatum *column_info = NULL;
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if (OB_FAIL(expr.args_[5]->eval(ctx, column_info))) {
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LOG_WARN("evaluate parameter failed", K(ret));
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} else {
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column_info_str = column_info->get_string();
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LOG_ORACLE_USER_ERROR(OB_ERR_DATA_TOO_LONG_MSG_FMT_V2, column_info_str.length(),
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column_info_str.ptr(), str_len_byte, max_accuracy_len);
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}
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ret = OB_ERR_DATA_TOO_LONG;
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}
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}
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}
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LOG_DEBUG("after column convert", K(expr), K(datum), K(cast_mode));
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}
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}
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return ret;
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}
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//TODO(yaoying.yyy):(duplicate_with_type_to_str, remove later
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int ObBaseExprColumnConv::shallow_copy_str_values(const common::ObIArray<common::ObString> &str_values)
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{
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int ret = OB_SUCCESS;
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str_values_.reset();
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if (OB_UNLIKELY(str_values.count() < 1)) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("invalid str_values", K(str_values), K(ret));
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} else if (OB_FAIL(str_values_.assign(str_values))) {
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LOG_WARN("fail to assign str values", K(ret));
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} else {/*do nothing*/}
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return ret;
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}
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int ObBaseExprColumnConv::deep_copy_str_values(const ObIArray<ObString> &str_values)
|
|
{
|
|
int ret = OB_SUCCESS;
|
|
str_values_.reset();
|
|
if (OB_UNLIKELY(str_values.count() < 1)) {
|
|
ret = OB_INVALID_ARGUMENT;
|
|
LOG_WARN("invalid str_values", K(str_values), K(ret));
|
|
} else if (OB_FAIL(str_values_.reserve(str_values.count()))) {
|
|
LOG_WARN("fail to init str_values_", K(ret));
|
|
} else {/*do nothing*/}
|
|
|
|
for (int64_t i = 0; OB_SUCC(ret) && i < str_values.count(); ++i) {
|
|
const ObString &str = str_values.at(i);
|
|
char *buf = NULL;
|
|
ObString str_tmp;
|
|
if (str.empty()) {
|
|
//just keep str_tmp empty
|
|
} else if (OB_UNLIKELY(NULL == (buf = static_cast<char *>(alloc_.alloc(str.length()))))) {
|
|
ret = common::OB_ALLOCATE_MEMORY_FAILED;
|
|
LOG_WARN("failed to allocate memory", K(i), K(str), K(ret));
|
|
} else {
|
|
MEMCPY(buf, str.ptr(), str.length());
|
|
str_tmp.assign_ptr(buf, str.length());
|
|
}
|
|
|
|
if (OB_SUCC(ret)) {
|
|
if (OB_FAIL(str_values_.push_back(str_tmp))) {
|
|
LOG_WARN("failed to push back str", K(i), K(str_tmp), K(str), K(ret));
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
}//sql
|
|
}//oceanbase
|