patch 4.0
This commit is contained in:
wangzelin.wzl
297
src/pl/sys_package/ob_dbms_sql.cpp
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297
src/pl/sys_package/ob_dbms_sql.cpp
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/**
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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 PL
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#include "pl/sys_package/ob_dbms_sql.h"
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#include "pl/ob_pl_exception_handling.h"
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#include "pl/ob_pl_package.h"
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#include "sql/resolver/ob_resolver_utils.h"
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#include "sql/parser/ob_parser.h"
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#include "sql/ob_spi.h"
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namespace oceanbase
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{
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using namespace common;
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using namespace common::number;
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using namespace sql;
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namespace pl
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{
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int ObDbmsInfo::init()
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{
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int ret = OB_SUCCESS;
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if (!define_columns_.created() &&
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OB_FAIL(define_columns_.create(common::hash::cal_next_prime(32),
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ObModIds::OB_HASH_BUCKET, ObModIds::OB_HASH_NODE))) {
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SQL_ENG_LOG(WARN, "create sequence current value map failed", K(ret));
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} else if (!define_arrays_.created() &&
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OB_FAIL(define_arrays_.create(common::hash::cal_next_prime(32),
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ObModIds::OB_HASH_BUCKET, ObModIds::OB_HASH_NODE))) {
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SQL_ENG_LOG(WARN, "create sequence current value map failed", K(ret));
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} else { /*do nothing*/ }
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return ret;
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}
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void ObDbmsInfo::reset()
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{
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param_names_.reset();
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into_names_.reset();
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bind_params_.reset();
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exec_params_.reset();
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sql_stmt_.reset();
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define_columns_.reuse();
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fields_.reset();
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if (nullptr != entity_) {
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DESTROY_CONTEXT(entity_);
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entity_ = nullptr;
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}
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}
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int ObDbmsInfo::deep_copy_field_columns(ObIAllocator& allocator,
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const common::ColumnsFieldIArray* src_fields,
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common::ColumnsFieldArray &dst_fields)
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{
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int ret = OB_SUCCESS;
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dst_fields.reset();
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dst_fields.set_allocator(&allocator);
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if (OB_ISNULL(src_fields)) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("can't copy null fields", K(ret));
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} else if (src_fields->count() <= 0) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("src fields is null.", K(ret), K(src_fields->count()));
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} else if (OB_FAIL(dst_fields.reserve(src_fields->count()))) {
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LOG_WARN("fail to reserve column fields",
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K(ret), K(dst_fields.count()), K(src_fields->count()));
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} else {
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for (int64_t i = 0 ; OB_SUCC(ret) && i < src_fields->count(); ++i) {
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ObField tmp_field;
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if (OB_FAIL(tmp_field.deep_copy(src_fields->at(i), &allocator))) {
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LOG_WARN("deep copy field failed", K(ret));
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} else if (OB_FAIL(dst_fields.push_back(tmp_field))) {
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LOG_WARN("push back field param failed", K(ret));
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} else { }
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}
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}
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return ret;
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}
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int ObDbmsInfo::init_params(int64_t param_count)
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{
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int ret = OB_SUCCESS;
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ObIAllocator *alloc = NULL;
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OV (OB_NOT_NULL(entity_), OB_NOT_INIT, stmt_id_, param_count);
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OX (alloc = &entity_->get_arena_allocator());
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CK (OB_NOT_NULL(alloc));
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OX (param_names_.reset());
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OX (param_names_.set_allocator(alloc));
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OZ (param_names_.init(param_count), stmt_id_, param_count);
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OX (bind_params_.reset());
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OX (bind_params_.set_allocator(alloc));
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OZ (bind_params_.init(param_count), stmt_id_, param_count);
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OX (exec_params_.~Ob2DArray());
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OX (new (&exec_params_) ParamStore(ObWrapperAllocator(alloc)));
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return ret;
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}
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const ObObjParam *ObDbmsInfo::get_bind_param(const ObString ¶m_name) const
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{
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const ObObjParam *param_value = NULL;
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for (int64_t i = 0; param_value == NULL && i < bind_params_.count(); i++) {
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if (0 == param_name.case_compare(bind_params_.at(i).param_name_)) { //直接匹配成功
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param_value = &bind_params_.at(i).param_value_;
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} else if (param_name.length() > 0 && ':' == param_name.ptr()[0]) {
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//param name比bind param多一个冒号
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ObString actual_param_name = param_name;
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++actual_param_name;
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if (0 == actual_param_name.case_compare(bind_params_.at(i).param_name_)) {
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param_value = &bind_params_.at(i).param_value_;
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} else if (bind_params_.at(i).param_name_.length() > 0
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&& ':' == bind_params_.at(i).param_name_.ptr()[0]) {
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//bind param比param name多一个冒号
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ObString actual_bind_name = bind_params_.at(i).param_name_;
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++actual_bind_name;
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if (0 == actual_bind_name.case_compare(param_name)) {
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param_value = &bind_params_.at(i).param_value_;
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}
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} else { /*do nothing*/ }
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} else {
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LOG_ERROR("BUG!!!: param name is not start with colon", K(param_name));
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}
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}
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return param_value;
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}
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int ObDbmsInfo::set_bind_param(const ObString ¶m_name, const ObObjParam¶m_value)
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{
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int ret =OB_SUCCESS;
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OV (OB_NOT_NULL(entity_), OB_NOT_INIT, param_name, param_value);
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if (OB_SUCC(ret)) {
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ObIAllocator &alloc = entity_->get_arena_allocator();
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int64_t idx = OB_INVALID_INDEX;
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for (int64_t i = 0; OB_INVALID_INDEX == idx && i < bind_params_.count(); i++) {
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if (0 == param_name.case_compare(bind_params_.at(i).param_name_)) {
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idx = i;
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}
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}
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if (OB_INVALID_INDEX != idx) {
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OZ (ob_write_obj(alloc, param_value, bind_params_.at(idx).param_value_),
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param_name, param_value);
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OX (bind_params_.at(idx).param_value_.set_accuracy(param_value.get_accuracy()));
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OX (bind_params_.at(idx).param_value_.set_param_meta());
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} else {
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ObString clone_name;
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ObObj clone_value;
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BindParam clone_param;
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OZ (ob_write_string(alloc, param_name, clone_name), param_name, param_value);
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OZ (ob_write_obj(alloc, param_value, clone_value), param_name, param_value);
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OX (clone_param = BindParam(clone_name, clone_value));
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OX (clone_param.param_value_.set_accuracy(param_value.get_accuracy()));
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OX (clone_param.param_value_.set_param_meta());
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OZ (bind_params_.push_back(clone_param), param_name, param_value);
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}
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}
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return ret;
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}
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int ObDbmsInfo::add_param_name(ObString &clone_name)
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{
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return param_names_.push_back(clone_name);
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}
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int ObDbmsInfo::set_into_names(int64_t into_cnt)
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{
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int ret = OB_SUCCESS;
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if (into_cnt > 0) {
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ObIAllocator *alloc = NULL;
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int64_t param_cnt = param_names_.count();
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CK (into_cnt <= param_cnt);
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OV (OB_NOT_NULL(entity_), OB_NOT_INIT, stmt_id_, param_cnt);
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OX (alloc = &entity_->get_arena_allocator());
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CK (OB_NOT_NULL(alloc));
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OX (into_names_.reset());
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OX (into_names_.set_allocator(alloc));
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OZ (into_names_.init(into_cnt), stmt_id_, into_cnt);
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for (int64_t i = param_cnt - into_cnt; OB_SUCC(ret) && i < param_cnt; ++i) {
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OZ (into_names_.push_back(param_names_.at(i)));
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}
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for (int64_t i = 0; OB_SUCC(ret) && i < into_cnt; ++i) {
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OX (param_names_.pop_back());
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}
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}
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return ret;
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}
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int ObDbmsCursorInfo::close(ObSQLSessionInfo &session, bool is_cursor_reuse, bool is_dbms_reuse)
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{
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int ret = OB_SUCCESS;
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OZ (ObPLCursorInfo::close(session, is_cursor_reuse));
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reset_private();
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is_dbms_reuse ? ObDbmsInfo::reuse() : ObDbmsInfo::reset();
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return ret;
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}
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int ObDbmsCursorInfo::init()
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{
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return ObDbmsInfo::init();
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}
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void ObDbmsCursorInfo::reset_private()
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{
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affected_rows_ = -1;
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}
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void ObDbmsCursorInfo::reuse()
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{
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// resue接口不重置cursor_id
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reset_private();
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ObDbmsInfo::reuse();
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ObPLCursorInfo::reuse();
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}
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void ObDbmsCursorInfo::reset()
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{
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reset_private();
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ObDbmsInfo::reset();
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ObPLCursorInfo::reset();
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}
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int ObDbmsCursorInfo::prepare_entity(sql::ObSQLSessionInfo &session)
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{
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int ret = OB_SUCCESS;
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if (OB_FAIL(ObPLCursorInfo::prepare_entity(session, get_dbms_entity()))) {
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LOG_WARN("prepare dbms info entity fail.", K(ret), K(get_id()));
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} else if (OB_FAIL(
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ObPLCursorInfo::prepare_entity(session, get_cursor_entity()))) {
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LOG_WARN("prepare cursor entity fail.", K(ret), K(get_id()));
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} else { /* do nothing */ }
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return ret;
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}
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int ObDbmsCursorInfo::parse(const ObString &sql_stmt, ObSQLSessionInfo &session)
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{
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int ret = OB_SUCCESS;
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if (!get_sql_stmt().empty()) {
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OZ (close(session, true));
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}
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OZ (prepare_entity(session), sql_stmt);
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OV (OB_NOT_NULL(get_dbms_entity()), OB_ALLOCATE_MEMORY_FAILED, sql_stmt);
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OV (OB_NOT_NULL(get_cursor_entity()), OB_ALLOCATE_MEMORY_FAILED, sql_stmt);
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if (OB_SUCC(ret)) {
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ObIAllocator &alloc = get_dbms_entity()->get_arena_allocator();
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ObParser parser(alloc, session.get_sql_mode(), session.get_local_collation_connection());
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ParseResult parse_result;
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int64_t param_count = 0;
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char **param_names = NULL;
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ObString clone_name;
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// 解析语句
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OZ (parser.parse(sql_stmt, parse_result, DBMS_SQL_MODE), sql_stmt);
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OZ (ObResolverUtils::resolve_stmt_type(parse_result, stmt_type_), sql_stmt);
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// cann't execute multi select stmt
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if (OB_FAIL(ret)) {
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} else if (ObStmt::is_ddl_stmt(stmt_type_, true)) {
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ret = OB_NO_STMT_PARSE;
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LOG_WARN("dbms_cursor need parse a select stmt.", K(ret));
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} else if (ObStmt::is_select_stmt(stmt_type_)
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&& !parser.is_pl_stmt(sql_stmt)
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&& !parser.is_single_stmt(sql_stmt)) {
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ret = OB_ERR_CMD_NOT_PROPERLY_ENDED;
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LOG_WARN("execute immdeidate only support one stmt", K(ret));
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}
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OX (param_names = parse_result.question_mark_ctx_.name_);
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OX (param_count = parse_result.question_mark_ctx_.count_);
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// 取出所有绑定变量名
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OZ (init_params(param_count));
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for (int64_t i = 0; OB_SUCC(ret) && i < param_count; i++) {
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OV (OB_NOT_NULL(param_names[i]), OB_INVALID_ARGUMENT, i, sql_stmt);
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/*
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* TODO: in bind_variable / variable_value, the ':' prefix is optional.
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*/
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OZ (ob_write_string(alloc, ObString(param_names[i]), clone_name), i, sql_stmt);
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OZ (add_param_name(clone_name), i, sql_stmt);
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}
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OZ (ob_write_string(alloc, sql_stmt, sql_stmt_, true), sql_stmt);
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}
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return ret;
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}
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}
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}
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