99 lines
2.8 KiB
C++
99 lines
2.8 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_ENG
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#include "sql/engine/ob_multi_children_phy_operator.h"
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#include "sql/engine/ob_physical_plan.h"
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using namespace oceanbase::sql;
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using namespace oceanbase::common;
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ObMultiChildrenPhyOperator::ObMultiChildrenPhyOperator(common::ObIAllocator& alloc)
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: ObPhyOperator(alloc), child_array_(NULL), child_num_(0)
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{}
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ObMultiChildrenPhyOperator::~ObMultiChildrenPhyOperator()
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{}
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void ObMultiChildrenPhyOperator::reset()
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{
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child_array_ = NULL;
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child_num_ = 0;
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ObPhyOperator::reset();
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}
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void ObMultiChildrenPhyOperator::reuse()
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{
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child_array_ = NULL;
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child_num_ = 0;
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ObPhyOperator::reuse();
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}
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int ObMultiChildrenPhyOperator::set_child(int32_t child_idx, ObPhyOperator& child_operator)
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{
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int ret = OB_SUCCESS;
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CK(OB_NOT_NULL(child_array_));
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CK(child_idx >= 0);
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CK(child_idx < child_num_);
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if (OB_SUCC(ret)) {
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child_array_[child_idx] = &child_operator;
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child_operator.set_parent(this);
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}
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return ret;
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}
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int ObMultiChildrenPhyOperator::create_child_array(int64_t child_op_size)
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{
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int ret = OB_SUCCESS;
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if (child_op_size > 0) {
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void* ptr = NULL;
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size_t buf_size = static_cast<size_t>(child_op_size * sizeof(ObPhyOperator*));
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CK(OB_NOT_NULL(my_phy_plan_));
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if (OB_ISNULL(ptr = my_phy_plan_->get_allocator().alloc(buf_size))) {
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ret = OB_ALLOCATE_MEMORY_FAILED;
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LOG_WARN("create child array failed", K(ret), K(child_op_size));
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} else {
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memset(ptr, 0, buf_size);
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child_array_ = static_cast<ObPhyOperator**>(ptr);
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child_num_ = static_cast<int32_t>(child_op_size);
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}
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}
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return ret;
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}
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ObPhyOperator* ObMultiChildrenPhyOperator::get_child(int32_t child_idx) const
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{
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ObPhyOperator* ret = NULL;
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if (OB_LIKELY(child_idx >= 0 && child_idx < child_num_)) {
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ret = child_array_[child_idx];
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}
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return ret;
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}
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int ObMultiChildrenPhyOperator::accept(ObPhyOperatorVisitor& visitor) const
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{
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int ret = OB_SUCCESS;
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CK(child_num_ >= 0);
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// pre-visit
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OZ(visitor.pre_visit(*this));
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// visit children
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for (int64_t i = 0; OB_SUCC(ret) && i < child_num_; ++i) {
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CK(child_array_[i]);
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OZ(child_array_[i]->accept(visitor));
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}
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// post-visit
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OZ(visitor.post_visit(*this));
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return ret;
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}
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OB_SERIALIZE_MEMBER((ObMultiChildrenPhyOperator, ObPhyOperator), child_num_);
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