110 lines
3.6 KiB
C++
110 lines
3.6 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_OPT
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#include "ob_log_sequence.h"
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#include "ob_log_operator_factory.h"
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#include "ob_optimizer_util.h"
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#include "sql/optimizer/ob_opt_est_cost.h"
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using namespace oceanbase::sql;
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using namespace oceanbase::common;
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using namespace oceanbase::sql::log_op_def;
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int ObLogSequence::allocate_exchange_post(AllocExchContext* ctx)
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{
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int ret = OB_SUCCESS;
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ObLogicalOperator* child = NULL;
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ObDMLStmt* stmt = NULL;
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ObExchangeInfo exch_info;
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if (OB_ISNULL(ctx) || OB_ISNULL(stmt = get_stmt())) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("get unexpected null", K(ctx), K(stmt), K(ret));
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} else if (stmt::T_INSERT == stmt->get_stmt_type() && 0 == get_num_of_child()) {
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} else if (OB_ISNULL(child = get_child(first_child))) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("get unexpected null", K(ret));
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} else if (child->get_sharding_info().is_local() || child->get_sharding_info().is_match_all()) {
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if (OB_FAIL(sharding_info_.copy_with_part_keys(child->get_sharding_info()))) {
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LOG_WARN("failed to deep copy sharding info from first child", K(ret));
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} else { /*do nothing*/
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}
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} else {
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// remote or distribution
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if (OB_FAIL(child->allocate_exchange(ctx, exch_info))) {
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LOG_WARN("failed to allocate exchange", K(ret));
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} else {
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sharding_info_.set_location_type(ObTableLocationType::OB_TBL_LOCATION_LOCAL);
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}
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}
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return ret;
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}
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int ObLogSequence::copy_without_child(ObLogicalOperator*& out)
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{
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int ret = OB_SUCCESS;
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out = NULL;
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ObLogicalOperator* op = NULL;
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ObLogSequence* sequence = NULL;
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if (OB_FAIL(clone(op))) {
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LOG_WARN("failed to clone ObLogSequence", K(ret));
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} else if (OB_ISNULL(sequence = static_cast<ObLogSequence*>(op))) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("failed to cast ObLogicalOperator * to ObLogSequence *", K(ret));
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} else {
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ARRAY_FOREACH_X(nextval_seq_ids_, idx, cnt, OB_SUCC(ret))
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{
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ret = sequence->nextval_seq_ids_.push_back(nextval_seq_ids_.at(idx));
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}
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out = sequence;
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}
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return ret;
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}
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uint64_t ObLogSequence::hash(uint64_t seed) const
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{
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uint64_t hash_value = seed;
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hash_value = ObOptimizerUtil::hash_array(hash_value, nextval_seq_ids_);
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hash_value = ObLogicalOperator::hash(hash_value);
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return hash_value;
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}
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int ObLogSequence::print_my_plan_annotation(char* buf, int64_t& buf_len, int64_t& pos, ExplainType type)
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{
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int ret = OB_SUCCESS;
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UNUSED(buf);
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UNUSED(buf_len);
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UNUSED(pos);
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UNUSED(type);
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return ret;
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}
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int ObLogSequence::est_cost()
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{
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int ret = OB_SUCCESS;
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ObLogicalOperator* child = NULL;
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if (0 == get_num_of_child()) {
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op_cost_ = ObOptEstCost::cost_sequence(0, nextval_seq_ids_.count());
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cost_ = op_cost_;
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card_ = 0.0;
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width_ = 0.0;
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} else if (OB_ISNULL(child = get_child(first_child))) {
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ret = OB_ERR_UNEXPECTED;
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LOG_WARN("get unexpected null", K(ret));
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} else {
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op_cost_ = ObOptEstCost::cost_sequence(child->get_card(), nextval_seq_ids_.count());
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cost_ = op_cost_ + child->get_cost();
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card_ = child->get_card();
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width_ = child->get_width() + nextval_seq_ids_.count() * 8;
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}
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return ret;
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}
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