hawdb-plan-cypher 0.15.0

An embedded Rust graph database for local data-plane workloads
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156

// Copyright 2026 Nowledge
//
// 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.

use std::marker::PhantomData;

use crate::{LogicalPlan, PhysicalPlan};

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum PlanPhaseKind {
    Logical,
    LoweringReady,
    Physical,
    FastPathPhysical,
}

pub trait PlanPhase {
    const KIND: PlanPhaseKind;
}

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct LogicalPhase;

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct LoweringReadyPhase;

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct PhysicalPhase;

#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct FastPathPhysicalPhase;

#[derive(Debug, Clone, PartialEq)]
pub struct LogicalPlanRoot {
    plan: LogicalPlan,
}

#[derive(Debug, Clone, PartialEq)]
pub struct LoweringReadyLogicalPlanRoot {
    plan: LogicalPlan,
}

#[derive(Debug, Clone, PartialEq)]
pub struct PhysicalPlanRoot<T, P: PlanPhase = PhysicalPhase> {
    plan: PhysicalPlan,
    metadata: T,
    phase: PhantomData<P>,
}

pub type FastPathPhysicalPlanRoot<T> = PhysicalPlanRoot<T, FastPathPhysicalPhase>;

impl PlanPhase for LogicalPhase {
    const KIND: PlanPhaseKind = PlanPhaseKind::Logical;
}

impl PlanPhase for LoweringReadyPhase {
    const KIND: PlanPhaseKind = PlanPhaseKind::LoweringReady;
}

impl PlanPhase for PhysicalPhase {
    const KIND: PlanPhaseKind = PlanPhaseKind::Physical;
}

impl PlanPhase for FastPathPhysicalPhase {
    const KIND: PlanPhaseKind = PlanPhaseKind::FastPathPhysical;
}

impl LogicalPlanRoot {
    pub fn new(plan: LogicalPlan) -> Self {
        Self { plan }
    }

    pub fn plan(&self) -> &LogicalPlan {
        &self.plan
    }

    pub fn phase(&self) -> PlanPhaseKind {
        LogicalPhase::KIND
    }

    pub fn into_lowering_ready(self) -> LoweringReadyLogicalPlanRoot {
        LoweringReadyLogicalPlanRoot { plan: self.plan }
    }

    pub fn into_plan(self) -> LogicalPlan {
        self.plan
    }
}

impl LoweringReadyLogicalPlanRoot {
    pub fn new(plan: LogicalPlan) -> Self {
        Self { plan }
    }

    pub fn plan(&self) -> &LogicalPlan {
        &self.plan
    }

    pub fn phase(&self) -> PlanPhaseKind {
        LoweringReadyPhase::KIND
    }

    pub fn into_plan(self) -> LogicalPlan {
        self.plan
    }
}

impl<T, P: PlanPhase> PhysicalPlanRoot<T, P> {
    pub fn new(plan: PhysicalPlan, metadata: T) -> Self {
        Self {
            plan,
            metadata,
            phase: PhantomData,
        }
    }

    pub fn plan(&self) -> &PhysicalPlan {
        &self.plan
    }

    pub fn metadata(&self) -> &T {
        &self.metadata
    }

    pub fn trace(&self) -> &T {
        &self.metadata
    }

    pub fn phase(&self) -> PlanPhaseKind {
        P::KIND
    }

    pub fn into_parts(self) -> (PhysicalPlan, T) {
        (self.plan, self.metadata)
    }
}

impl<T> PhysicalPlanRoot<T, PhysicalPhase> {
    pub fn into_fast_path(self) -> FastPathPhysicalPlanRoot<T> {
        PhysicalPlanRoot {
            plan: self.plan,
            metadata: self.metadata,
            phase: PhantomData,
        }
    }
}