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
|
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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.
#include <memory>
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/type.h"
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/util/checked_cast.h"
#include "contrib/libs/apache/arrow_next/cpp/src/arrow/util/time.h"
namespace arrow20 {
using internal::checked_cast;
namespace util {
// TimestampType -> TimestampType
static const std::pair<DivideOrMultiply, int64_t> kTimestampConversionTable[4][4] = {
// TimestampType::SECOND
{{MULTIPLY, 1}, {MULTIPLY, 1000}, {MULTIPLY, 1000000}, {MULTIPLY, 1000000000}},
// TimestampType::MILLI
{{DIVIDE, 1000}, {MULTIPLY, 1}, {MULTIPLY, 1000}, {MULTIPLY, 1000000}},
// TimestampType::MICRO
{{DIVIDE, 1000000}, {DIVIDE, 1000}, {MULTIPLY, 1}, {MULTIPLY, 1000}},
// TimestampType::NANO
{{DIVIDE, 1000000000}, {DIVIDE, 1000000}, {DIVIDE, 1000}, {MULTIPLY, 1}},
};
std::pair<DivideOrMultiply, int64_t> GetTimestampConversion(TimeUnit::type in_unit,
TimeUnit::type out_unit) {
return kTimestampConversionTable[static_cast<int>(in_unit)][static_cast<int>(out_unit)];
}
Result<int64_t> ConvertTimestampValue(const std::shared_ptr<DataType>& in,
const std::shared_ptr<DataType>& out,
int64_t value) {
auto op_factor =
GetTimestampConversion(checked_cast<const TimestampType&>(*in).unit(),
checked_cast<const TimestampType&>(*out).unit());
auto op = op_factor.first;
auto factor = op_factor.second;
switch (op) {
case MULTIPLY:
return value * factor;
case DIVIDE:
return value / factor;
}
// unreachable...
return 0;
}
} // namespace util
} // namespace arrow20
|
