drasi_core/evaluation/
instant_query_clock.rs

1// Copyright 2024 The Drasi Authors.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use crate::{interface::QueryClock, models::SourceChange};
16
17#[derive(Debug)]
18pub struct InstantQueryClock {
19    transaction_time: u64,
20    realtime: u64,
21}
22
23impl InstantQueryClock {
24    pub fn new(transaction_time: u64, realtime: u64) -> InstantQueryClock {
25        InstantQueryClock {
26            transaction_time,
27            realtime,
28        }
29    }
30
31    pub fn from_source_change(change: &SourceChange) -> InstantQueryClock {
32        InstantQueryClock {
33            transaction_time: change.get_transaction_time(),
34            realtime: change.get_realtime(),
35        }
36    }
37}
38
39impl QueryClock for InstantQueryClock {
40    fn get_transaction_time(&self) -> u64 {
41        self.transaction_time
42    }
43
44    fn get_realtime(&self) -> u64 {
45        self.realtime
46    }
47}