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oceanbase/src/sql/ob_insert_stmt_printer.cpp

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/**
* Copyright (c) 2021 OceanBase
* OceanBase CE is licensed under Mulan PubL v2.
* You can use this software according to the terms and conditions of the Mulan PubL v2.
* You may obtain a copy of Mulan PubL v2 at:
* http://license.coscl.org.cn/MulanPubL-2.0
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PubL v2 for more details.
*/
#define USING_LOG_PREFIX SQL
#include "sql/ob_insert_stmt_printer.h"
#include "sql/ob_sql_context.h"
namespace oceanbase
{
using namespace common;
namespace sql
{
void ObInsertStmtPrinter::init(char *buf, int64_t buf_len, int64_t *pos, ObInsertStmt *stmt)
{
ObDMLStmtPrinter::init(buf, buf_len, pos, stmt);
}
int ObInsertStmtPrinter::do_print()
{
int ret = OB_SUCCESS;
if (OB_ISNULL(stmt_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt should not be NULL", K(ret));
} else {
expr_printer_.init(buf_,
buf_len_,
pos_,
schema_guard_,
print_params_,
param_store_);
if (OB_FAIL(print())) {
LOG_WARN("fail to print stmt", K(ret));
}
}
return ret;
}
int ObInsertStmtPrinter::print()
{
int ret = OB_SUCCESS;
if (OB_ISNULL(stmt_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ should not be NULL", K(ret));
} else if (OB_UNLIKELY(!stmt_->is_insert_stmt())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("Not a valid insert stmt", K(stmt_->get_stmt_type()),K(ret));
} else if (OB_FAIL(print_basic_stmt())) {
LOG_WARN("fail to print basic stmt", K(ret), K(*stmt_));
} else { /*do nothing*/ }
return ret;
}
int ObInsertStmtPrinter::print_basic_stmt()
{
int ret = OB_SUCCESS;
if (OB_ISNULL(stmt_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ should not be NULL", K(ret));
} else if (OB_FAIL(print_temp_table_as_cte())) {
LOG_WARN("failed to print cte", K(ret));
} else if (OB_FAIL(print_insert())) {
LOG_WARN("fail to print select", K(ret), K(*stmt_));
} else if (OB_FAIL(print_into())) {
LOG_WARN("fail to print into", K(ret), K(*stmt_));
} else if (OB_FAIL(print_values())) {
LOG_WARN("fail to print values", K(ret), K(*stmt_));
} else if (OB_FAIL(print_returning())) {
LOG_WARN("fail to print_returning", K(ret), K(*stmt_));
} else {
// do-nothing
}
return ret;
}
int ObInsertStmtPrinter::print_insert()
{
int ret = OB_SUCCESS;
if (OB_ISNULL(stmt_) || OB_ISNULL(buf_) || OB_ISNULL(pos_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is NULL or buf_ is NULL or pos_ is NULL", K(ret));
} else {
const ObInsertStmt *insert_stmt = static_cast<const ObInsertStmt*>(stmt_);
if (insert_stmt->is_replace()) {
DATA_PRINTF("replace ");
} else {
DATA_PRINTF("insert ");
}
if (OB_SUCC(ret)) {
if (OB_FAIL(print_hint())) { // hint
LOG_WARN("fail to print hint", K(ret), K(*stmt_));
} else {
DATA_PRINTF("into ");
}
}
}
return ret;
}
int ObInsertStmtPrinter::print_into()
{
int ret = OB_SUCCESS;
if (OB_ISNULL(stmt_) || OB_ISNULL(buf_) || OB_ISNULL(pos_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is NULL or buf_ is NULL or pos_ is NULL", K(ret));
} else {
const ObInsertStmt *insert_stmt = static_cast<const ObInsertStmt*>(stmt_);
const TableItem *table_item = NULL;
if (OB_ISNULL(table_item = insert_stmt->get_table_item(0))) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("Invalid table item", K(stmt_->get_table_size()), K(ret));
} else if (OB_FAIL(print_table(table_item, insert_stmt->get_returning_exprs().count() > 0 ? false : true))) {
LOG_WARN("failed to print table", K(*table_item), K(ret));
} else {
DATA_PRINTF("(");
for (int64_t i = 0; OB_SUCC(ret) && i < insert_stmt->get_values_desc().count(); ++i) {
const ObColumnRefRawExpr* column = insert_stmt->get_values_desc().at(i);
if (OB_ISNULL(column)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("column is NULL", K(ret));
} else if (column->get_column_id() == OB_HIDDEN_SESSION_ID_COLUMN_ID
|| column->get_column_id() == OB_HIDDEN_SESS_CREATE_TIME_COLUMN_ID) {
// 临时表的隐藏列，不需要print。TODO 将临时表insert改写由resolver转移到改写阶段后，可以去掉本分支
LOG_DEBUG("do not print column", K(*column));
} else {
PRINT_QUOT;
PRINT_IDENT(column->get_column_name());
PRINT_QUOT;
DATA_PRINTF(",");
}
}
if (OB_SUCC(ret)) {
--*pos_;
DATA_PRINTF(") ");
}
}
}
return ret;
}
int ObInsertStmtPrinter::print_values()
{
int ret = OB_SUCCESS;
if (OB_ISNULL(stmt_) || OB_ISNULL(buf_) || OB_ISNULL(pos_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is NULL or buf_ is NULL or pos_ is NULL", K(ret));
} else if (!stmt_->is_insert_stmt()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("Not a valid insert stmt", K(stmt_->get_stmt_type()), K(stmt_->get_table_size()), K(ret));
} else {
const ObInsertStmt *insert_stmt = static_cast<const ObInsertStmt*>(stmt_);
if (insert_stmt->get_from_item_size() == 1) {
const TableItem *view = insert_stmt->get_table_item_by_id(
insert_stmt->get_from_item(0).table_id_);
const ObSelectStmt* sub_select_stmt = NULL;
if (OB_ISNULL(view) || OB_ISNULL(sub_select_stmt = view->ref_query_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("sub select stmt is null", K(ret), K(sub_select_stmt));
} else if (OB_FAIL(print_subquery(sub_select_stmt, PRINT_CTE | FORCE_COL_ALIAS))) {
LOG_WARN("failed to print subquery", K(ret));
}
} else {
if (insert_stmt->get_values_desc().empty()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("value desc is empty", K(insert_stmt->get_values_desc()), K(ret));
} else {
int64_t column_count = insert_stmt->get_values_desc().count();
int64_t row_count = insert_stmt->get_values_vector().count() / column_count;
DATA_PRINTF("values");
for (int64_t i = 0; OB_SUCC(ret) && i < row_count; ++i) {
DATA_PRINTF("(");
for (int64_t j = 0; OB_SUCC(ret) && j < column_count; ++j) {
const ObColumnRefRawExpr* column = insert_stmt->get_values_desc().at(j);
if (OB_ISNULL(column)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("column is NULL", K(ret));
} else if (column->get_column_id() == OB_HIDDEN_SESSION_ID_COLUMN_ID
|| column->get_column_id() == OB_HIDDEN_SESS_CREATE_TIME_COLUMN_ID) {
// 临时表的隐藏列，不需要print。TODO 将临时表insert改写由resolver转移到改写阶段后，可以去掉本分支
LOG_DEBUG("do not print column", K(*column));
} else if (i * column_count + j >= insert_stmt->get_values_vector().count()) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("unexpect values vector", K(ret));
} else if (OB_FAIL(expr_printer_.do_print(insert_stmt->get_values_vector().at(i * column_count + j), T_INSERT_SCOPE))) {
LOG_WARN("fail to print where expr", K(ret));
} else {
DATA_PRINTF(",");
}
}
if (OB_SUCC(ret)) {
--*pos_;
DATA_PRINTF("),");
}
}
if (OB_SUCC(ret)) {
--*pos_;
}
}
}
}
return ret;
}
} //end of namespace sql
} //end of namespace oceanbase
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