mirror of
https://gitee.com/milvus-io/milvus.git
synced 2026-01-07 19:31:51 +08:00
88f5642603
**What type of PR is this?**
- [x] Feature
**What this PR does / why we need it:**
This PR supports boolean expression as DSL.
1. The goal of this PR is to support predicates
like `A > 3 && not B < 5 or C in [1, 2, 3]`.
2. Defines `plan.proto`, as Intermediate Representation (IR)
used between go and cpp.
3. Support expr parser, convert predicate expr to IR
in proxynode, while doing static check there
4. Support IR to AST in cpp, enable the execution
60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
|
|
//
|
|
// 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. See the License for the specific language governing permissions and limitations under the License
|
|
|
|
#pragma once
|
|
#include <memory>
|
|
#include <vector>
|
|
#include <any>
|
|
#include <string>
|
|
#include <optional>
|
|
#include "Expr.h"
|
|
#include "utils/Json.h"
|
|
namespace milvus::query {
|
|
class PlanNodeVisitor;
|
|
|
|
// Base of all Nodes
|
|
struct PlanNode {
|
|
public:
|
|
virtual ~PlanNode() = default;
|
|
virtual void
|
|
accept(PlanNodeVisitor&) = 0;
|
|
};
|
|
|
|
using PlanNodePtr = std::unique_ptr<PlanNode>;
|
|
|
|
struct QueryInfo {
|
|
int64_t topK_;
|
|
FieldOffset field_offset_;
|
|
MetricType metric_type_;
|
|
std::string deprecated_metric_type_; // TODO: use enum
|
|
nlohmann::json search_params_;
|
|
};
|
|
|
|
struct VectorPlanNode : PlanNode {
|
|
std::optional<ExprPtr> predicate_;
|
|
QueryInfo query_info_;
|
|
std::string placeholder_tag_;
|
|
};
|
|
|
|
struct FloatVectorANNS : VectorPlanNode {
|
|
public:
|
|
void
|
|
accept(PlanNodeVisitor&) override;
|
|
};
|
|
|
|
struct BinaryVectorANNS : VectorPlanNode {
|
|
public:
|
|
void
|
|
accept(PlanNodeVisitor&) override;
|
|
};
|
|
|
|
} // namespace milvus::query
|