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Copy pathob_log_link_scan.cpp
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71 lines (64 loc) · 2.28 KB
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/**
* Copyright (c) 2023 OceanBase
* OceanBase CE is licensed under Mulan PubL v2.
* You can use this software according to the terms and conditions of the Mulan PubL v2.
* You may obtain a copy of Mulan PubL v2 at:
* http://license.coscl.org.cn/MulanPubL-2.0
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PubL v2 for more details.
*/
#define USING_LOG_PREFIX SQL_OPT
#include "sql/optimizer/ob_log_link_scan.h"
#include "sql/resolver/expr/ob_expr_info_flag.h"
using namespace oceanbase::sql;
using namespace oceanbase::common;
using namespace oceanbase::sql::log_op_def;
namespace oceanbase
{
namespace sql
{
ObLogLinkScan::ObLogLinkScan(ObLogPlan &plan)
: ObLogLink(plan)
{}
int ObLogLinkScan::get_op_exprs(ObIArray<ObRawExpr*> &all_exprs)
{
int ret = OB_SUCCESS;
if (OB_FAIL(append(all_exprs, select_exprs_))) {
LOG_WARN("failed to push back select exprs", K(ret));
} else if (OB_FAIL(ObLogicalOperator::get_op_exprs(all_exprs))) {
LOG_WARN("failed to get op exprs", K(ret));
} else { /*do nothing*/ }
return ret;
}
int ObLogLinkScan::allocate_expr_post(ObAllocExprContext &ctx)
{
int ret = OB_SUCCESS;
const ObSelectStmt *stmt = NULL;
if (OB_ISNULL(get_plan()) ||
OB_ISNULL(stmt = static_cast<const ObSelectStmt *>(get_plan()->get_stmt()))) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(get_plan()), K(stmt), K(ret));
}
for (int64_t i = 0; OB_SUCC(ret) && i < stmt->get_select_item_size(); ++i) {
ObRawExpr *expr = stmt->get_select_item(i).expr_;
if (OB_ISNULL(expr)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("null expr", K(ret));
} else if (OB_FAIL(mark_expr_produced(expr,
branch_id_,
id_,
ctx))) {
LOG_WARN("failed to mark expr as produced", K(branch_id_), K(ret));
}
}
if (OB_SUCC(ret)) {
if (OB_FAIL(ObLogicalOperator::allocate_expr_post(ctx))) {
LOG_WARN("failed to allocate_expr_post", K(ret));
} else { /*do nothing*/ }
}
return ret;
}
} // namespace sql
} // namespace oceanbase