forked from TuGraph-family/tugraph-db
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
5 changed files
with
162 additions
and
2 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
145 changes: 145 additions & 0 deletions
145
src/cypher/execution_plan/optimization/rewrite_label_scan.h
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,145 @@ | ||
| /** | ||
| * Copyright 2022 AntGroup CO., Ltd. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| */ | ||
|
|
||
| #pragma once | ||
|
|
||
| #include "tools/lgraph_log.h" | ||
| #include "core/data_type.h" | ||
| #include "cypher/execution_plan/ops/op_filter.h" | ||
| #include "cypher/execution_plan/ops/op_node_index_seek.h" | ||
| #include "cypher/execution_plan/ops/op_node_by_label_scan.h" | ||
| #include "cypher/execution_plan/optimization/opt_pass.h" | ||
| #include "cypher/execution_plan/optimization/property_filter_detector.h" | ||
|
|
||
| namespace cypher { | ||
|
|
||
| typedef std::unordered_map< | ||
| std::string, std::unordered_map< | ||
| std::string,std::set<lgraph::FieldData>>> FilterCollections; | ||
|
|
||
| class ReplaceNodeScanWithIndexSeek : public OptPass { | ||
| private: | ||
| RTContext *ctx_ = nullptr; | ||
| const lgraph::SchemaInfo *si_ = nullptr; | ||
|
|
||
| void Impl(OpBase *root) { | ||
| OpBase *op_filter = nullptr; | ||
| FilterCollections filters; | ||
| if (FindNodePropFilter(root, op_filter, filters)) { | ||
| Replace(op_filter, filters); | ||
| } | ||
| } | ||
|
|
||
| bool FindNodePropFilter(OpBase *root, OpBase *&op_filter, FilterCollections &filters) { | ||
| auto op = root; | ||
| if (op->type == OpType::FILTER ) { | ||
| auto filter = dynamic_cast<OpFilter *>(op); | ||
| if (_CheckPropFilter(filter, filters)) { | ||
| op_filter = op; | ||
| return true; | ||
| } | ||
| } | ||
|
|
||
| for (auto child : op->children) { | ||
| if (FindNodePropFilter(child, op_filter, filters)) return true; | ||
| } | ||
|
|
||
| return false; | ||
| } | ||
|
|
||
| void Replace(OpBase *root, FilterCollections &filter_collections) { | ||
| if (root->type == OpType::NODE_BY_LABEL_SCAN) { | ||
| auto scan = dynamic_cast<NodeByLabelScan *>(root); | ||
| auto label = scan->GetLabel(); | ||
| auto node = scan->GetNode(); | ||
| auto n = node->Alias(); | ||
| if (!filter_collections.count(n)) { | ||
| return; | ||
| } | ||
| auto& filters = filter_collections.at(n); | ||
| auto schema = si_->v_schema_manager.GetSchema(label); | ||
| if (!schema) { | ||
| return; | ||
| } | ||
| auto pk = schema->GetPrimaryField(); | ||
| if (filters.count(pk)) { | ||
| std::vector<lgraph::FieldData> values; | ||
| for (auto& val : filters.at(pk)) { | ||
| values.push_back(val); | ||
| } | ||
| auto parent = root->parent; | ||
| auto op_node_index_seek = new NodeIndexSeek(node, scan->GetSymtab(), pk, values); | ||
| op_node_index_seek->parent = parent; | ||
| parent->RemoveChild(root); | ||
| OpBase::FreeStream(root); | ||
| parent->AddChild(op_node_index_seek); | ||
| return; | ||
| } | ||
| for (auto& [k, set] : filters) { | ||
| if (k == pk) { | ||
| continue; | ||
| } | ||
| if (!schema->TryGetFieldExtractor(k)->GetVertexIndex()) { | ||
| continue; | ||
| } | ||
| std::vector<lgraph::FieldData> values; | ||
| for (auto& val : set) { | ||
| values.push_back(val); | ||
| } | ||
| auto parent = root->parent; | ||
| auto op_node_index_seek = new NodeIndexSeek(node, scan->GetSymtab(), k, values); | ||
| op_node_index_seek->parent = parent; | ||
| parent->RemoveChild(root); | ||
| OpBase::FreeStream(root); | ||
| parent->AddChild(op_node_index_seek); | ||
| return; | ||
| } | ||
| return; | ||
| } | ||
| for (auto child : root->children) { | ||
| Replace(child, filter_collections); | ||
| } | ||
| } | ||
|
|
||
| bool _CheckPropFilter(OpFilter *&op_filter, FilterCollections &filters) { | ||
| auto filter = op_filter->Filter(); | ||
| CYPHER_THROW_ASSERT(filter->Type() == lgraph::Filter::GEAX_EXPR_FILTER); | ||
| auto geax_filter = ((lgraph::GeaxExprFilter *)filter.get())->GetArithExpr(); | ||
| geax::frontend::Expr *expr = geax_filter.expr_; | ||
| PropertyFilterDetector detector; | ||
| if (!detector.Build(expr)) return false; | ||
| filters = detector.GetProperties(); | ||
| if (filters.empty()) return false; | ||
| return true; | ||
| } | ||
| public: | ||
| ReplaceNodeScanWithIndexSeek(RTContext *ctx) | ||
| : OptPass(typeid(ReplaceNodeScanWithIndexSeek).name()), ctx_(ctx) {} | ||
| bool Gate() override { return true; } | ||
| int Execute(OpBase *root) override { | ||
| if (ctx_->graph_.empty()) { | ||
| return 0; | ||
| } | ||
| ctx_->ac_db_ = std::make_unique<lgraph::AccessControlledDB>( | ||
| ctx_->galaxy_->OpenGraph(ctx_->user_, ctx_->graph_)); | ||
| lgraph_api::GraphDB db(ctx_->ac_db_.get(), true); | ||
| auto txn = db.CreateReadTxn(); | ||
| si_ = &txn.GetTxn()->GetSchemaInfo(); | ||
| Impl(root); | ||
| txn.Abort(); | ||
| return 0; | ||
| } | ||
| }; | ||
|
|
||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters