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oceanbase/src/sql/ob_insert_stmt_printer.cpp
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2021-05-31 22:56:52 +08:00

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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"
#include "sql/ob_select_stmt_printer.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_UNLIKELY(!is_inited_)) {
ret = OB_NOT_INIT;
LOG_WARN("not inited!", K(ret));
} else 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_, print_params_);
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 {
const ObInsertStmt* insert_stmt = static_cast<const ObInsertStmt*>(stmt_);
if (!insert_stmt->is_multi_insert_stmt()) {
if (OB_FAIL(print_basic_stmt())) {
LOG_WARN("fail to print basic stmt", K(ret), K(*stmt_));
}
} else if (OB_FAIL(print_multi_insert_stmt())) {
LOG_WARN("fail to print multi insert 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_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 {
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))) {
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) {
LOG_DEBUG("do not print column", K(*column));
} else {
DATA_PRINTF(" \"");
PRINT_IDENT(column->get_column_name());
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 {
ObSelectStmtPrinter printer(
buf_, buf_len_, pos_, static_cast<const ObSelectStmt*>(sub_select_stmt), print_params_, NULL, false);
if (OB_FAIL(printer.do_print())) {
LOG_WARN("failed to print sub select printer", 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_value_vectors().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) {
LOG_DEBUG("do not print column", K(*column));
} else if (OB_FAIL(expr_printer_.do_print(
insert_stmt->get_value_vectors().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;
}
int ObInsertStmtPrinter::print_multi_insert_stmt()
{
int ret = OB_SUCCESS;
if (OB_ISNULL(stmt_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt_ is 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 {
const ObInsertStmt* insert_stmt = static_cast<const ObInsertStmt*>(stmt_);
if (OB_UNLIKELY(!insert_stmt->is_multi_insert_stmt())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(ret), K(insert_stmt->is_multi_insert_stmt()));
} else if (OB_FAIL(print_multi_insert(insert_stmt))) {
LOG_WARN("fail to print select", K(ret), K(*stmt_));
} else if (OB_FAIL(print_multi_value(insert_stmt))) {
LOG_WARN("fail to print into", K(ret), K(*stmt_));
} else if (OB_FAIL(print_subquery(insert_stmt))) {
LOG_WARN("fail to print into", K(ret), K(*stmt_));
} else {
LOG_DEBUG("print multi insert stmt complete");
// do-nothing
}
}
return ret;
}
int ObInsertStmtPrinter::print_multi_insert(const ObInsertStmt* insert_stmt)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(insert_stmt)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("insert_stmt is NULL", K(ret), K(insert_stmt));
} else {
DATA_PRINTF("insert ");
if (OB_FAIL(print_hint())) { // hint
LOG_WARN("fail to print hint", K(ret), K(*stmt_));
} else if (insert_stmt->is_multi_insert_first()) {
DATA_PRINTF("first");
} else {
DATA_PRINTF("all");
}
}
return ret;
}
int ObInsertStmtPrinter::print_multi_value(const ObInsertStmt* insert_stmt)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(insert_stmt)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("insert_stmt is NULL", K(ret), K(insert_stmt));
} else if (insert_stmt->is_multi_conditions_insert()) {
if (OB_FAIL(print_multi_conditions_insert(insert_stmt))) {
LOG_WARN("failed to print multi conditions insert", K(ret));
}
} else if (OB_FAIL(print_basic_multi_insert(insert_stmt))) {
LOG_WARN("failed to print basic multi insert", K(ret));
} else { /*do nothing*/
}
return ret;
}
int ObInsertStmtPrinter::print_basic_multi_insert(const ObInsertStmt* insert_stmt)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(insert_stmt) ||
OB_UNLIKELY(!insert_stmt->is_multi_insert_stmt() || insert_stmt->is_multi_conditions_insert())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected error", K(ret), K(insert_stmt));
} else {
for (int64_t i = 0; OB_SUCC(ret) && i < insert_stmt->get_table_size() - 1; ++i) {
if (OB_FAIL(print_into_table_values(insert_stmt, i))) {
LOG_WARN("failed to print into table values", K(ret));
}
}
}
return ret;
}
int ObInsertStmtPrinter::print_multi_conditions_insert(const ObInsertStmt* insert_stmt)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(insert_stmt) ||
OB_UNLIKELY(!insert_stmt->is_multi_insert_stmt() || !insert_stmt->is_multi_conditions_insert())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected error", K(ret), K(insert_stmt));
} else {
int64_t pre_idx = -1;
const ObIArray<ObInsertTableInfo>& table_infos = insert_stmt->get_multi_insert_table_info();
for (int64_t i = 0; OB_SUCC(ret) && i < table_infos.count(); ++i) {
if (table_infos.at(i).when_conds_idx_ == pre_idx) {
if (OB_FAIL(print_into_table_values(insert_stmt, i))) {
LOG_WARN("failed to print into table values", K(ret));
}
} else if (table_infos.at(i).when_conds_idx_ != -1) { // when expr
DATA_PRINTF(" when ");
for (int64_t j = 0; OB_SUCC(ret) && j < table_infos.at(i).when_conds_expr_.count(); ++j) {
if (OB_FAIL(expr_printer_.do_print(table_infos.at(i).when_conds_expr_.at(j), T_NONE_SCOPE))) {
LOG_WARN("fail to print condition expr", K(ret));
} else {
DATA_PRINTF(" and ");
}
}
if (OB_SUCC(ret)) {
*pos_ -= 5; // strlen(" and ")
DATA_PRINTF(" then");
if (OB_FAIL(print_into_table_values(insert_stmt, i))) {
LOG_WARN("failed to print into table values", K(ret));
} else {
pre_idx = table_infos.at(i).when_conds_idx_;
}
}
} else { // else expr
DATA_PRINTF(" else ");
if (OB_FAIL(print_into_table_values(insert_stmt, i))) {
LOG_WARN("failed to print into table values", K(ret));
} else {
pre_idx = table_infos.at(i).when_conds_idx_;
}
}
}
}
return ret;
}
int ObInsertStmtPrinter::print_subquery(const ObInsertStmt* insert_stmt)
{
int ret = OB_SUCCESS;
if (OB_ISNULL(insert_stmt)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("insert_stmt is NULL", K(ret), K(insert_stmt));
} else {
const TableItem* table_item = insert_stmt->get_table_item(insert_stmt->get_table_size() - 1);
const ObSelectStmt* sub_select_stmt = NULL;
if (OB_ISNULL(table_item) || OB_UNLIKELY(!table_item->is_generated_table()) ||
OB_ISNULL(sub_select_stmt = table_item->ref_query_)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("sub select stmt is null", K(ret), K(table_item), K(sub_select_stmt));
} else {
ObSelectStmtPrinter printer(
buf_, buf_len_, pos_, static_cast<const ObSelectStmt*>(sub_select_stmt), print_params_, NULL, false);
if (OB_FAIL(printer.do_print())) {
LOG_WARN("failed to print sub select printer", K(ret));
}
}
}
return ret;
}
int ObInsertStmtPrinter::print_into_table_values(const ObInsertStmt* insert_stmt, int64_t index)
{
int ret = OB_SUCCESS;
DATA_PRINTF(" into ");
const TableItem* table_item = NULL;
if (OB_ISNULL(insert_stmt) || OB_ISNULL(table_item = insert_stmt->get_table_item(index)) ||
OB_UNLIKELY(index >= insert_stmt->get_multi_values_desc().count() ||
index >= insert_stmt->get_multi_value_vectors().count() || index < 0)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("Invalid table item",
K(stmt_->get_table_size()),
K(index),
K(ret),
K(insert_stmt->get_multi_values_desc().count()),
K(insert_stmt->get_multi_value_vectors().count()));
} else if (OB_FAIL(print_table(table_item, false, true))) {
LOG_WARN("failed to print table", K(*table_item), K(ret));
} else {
// print columns
DATA_PRINTF("(");
for (int64_t j = 0; OB_SUCC(ret) && j < insert_stmt->get_multi_values_desc().at(index).count(); ++j) {
const ObColumnRefRawExpr* column = insert_stmt->get_multi_values_desc().at(index).at(j);
if (OB_ISNULL(column)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("column is NULL", K(ret));
} else {
DATA_PRINTF(" \"%.*s\"", LEN_AND_PTR(column->get_column_name()));
DATA_PRINTF(",");
}
}
if (OB_SUCC(ret)) {
--*pos_;
DATA_PRINTF(") ");
// print values
int64_t col_count = insert_stmt->get_multi_values_desc().at(index).count();
int64_t row_count = insert_stmt->get_multi_value_vectors().at(index).count() / col_count;
DATA_PRINTF("values");
for (int64_t k = 0; OB_SUCC(ret) && k < row_count; ++k) {
DATA_PRINTF("(");
for (int64_t p = 0; OB_SUCC(ret) && p < col_count; ++p) {
if (OB_FAIL(expr_printer_.do_print(
insert_stmt->get_multi_value_vectors().at(index).at(k * col_count + p), 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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