mirror of
https://gitee.com/milvus-io/milvus.git
synced 2026-01-03 17:31:58 +08:00
94 lines
2.3 KiB
C++
94 lines
2.3 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 <map>
|
|
#include "common/Schema.h"
|
|
|
|
namespace milvus::query {
|
|
class ExprVisitor;
|
|
|
|
// Base of all Exprs
|
|
struct Expr {
|
|
public:
|
|
virtual ~Expr() = default;
|
|
virtual void
|
|
accept(ExprVisitor&) = 0;
|
|
};
|
|
|
|
using ExprPtr = std::unique_ptr<Expr>;
|
|
|
|
struct BinaryExpr : Expr {
|
|
ExprPtr left_;
|
|
ExprPtr right_;
|
|
};
|
|
|
|
struct UnaryExpr : Expr {
|
|
ExprPtr child_;
|
|
};
|
|
|
|
// TODO: not enabled in sprint 1
|
|
struct BoolUnaryExpr : UnaryExpr {
|
|
enum class OpType { LogicalNot };
|
|
OpType op_type_;
|
|
|
|
public:
|
|
void
|
|
accept(ExprVisitor&) override;
|
|
};
|
|
|
|
// TODO: not enabled in sprint 1
|
|
struct BoolBinaryExpr : BinaryExpr {
|
|
// Note: bitA - bitB == bitA & ~bitB, alias to LogicalMinus
|
|
enum class OpType { LogicalAnd, LogicalOr, LogicalXor, LogicalMinus };
|
|
OpType op_type_;
|
|
|
|
public:
|
|
void
|
|
accept(ExprVisitor&) override;
|
|
};
|
|
|
|
struct TermExpr : Expr {
|
|
FieldOffset field_offset_;
|
|
DataType data_type_ = DataType::NONE;
|
|
// std::vector<std::any> terms_;
|
|
|
|
protected:
|
|
// prevent accidential instantiation
|
|
TermExpr() = default;
|
|
|
|
public:
|
|
void
|
|
accept(ExprVisitor&) override;
|
|
};
|
|
|
|
struct RangeExpr : Expr {
|
|
FieldOffset field_offset_;
|
|
DataType data_type_ = DataType::NONE;
|
|
enum class OpType { GreaterThan = 0, GreaterEqual = 1, LessThan = 2, LessEqual = 3, Equal, NotEqual };
|
|
static const std::map<std::string, OpType> mapping_; // op_name -> op
|
|
|
|
// std::vector<std::tuple<OpType, std::any>> conditions_;
|
|
protected:
|
|
// prevent accidential instantiation
|
|
RangeExpr() = default;
|
|
|
|
public:
|
|
void
|
|
accept(ExprVisitor&) override;
|
|
};
|
|
} // namespace milvus::query
|