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
157
158
159
160
161
#![allow(missing_docs)]
use ahash::RandomState;
use multiversion::multiversion;
use std::hash::Hash;
macro_rules! new_state {
() => {
RandomState::with_seeds(0, 0, 0, 0)
};
}
use crate::{
array::{Array, BinaryArray, BooleanArray, PrimitiveArray, Utf8Array},
datatypes::{DataType, PhysicalType, PrimitiveType},
error::{Error, Result},
offset::Offset,
types::NativeType,
};
use super::arity::unary;
#[multiversion]
#[clone(target = "x86_64+aes+sse3+ssse3+avx+avx2")]
pub fn hash_primitive<T: NativeType + Hash>(array: &PrimitiveArray<T>) -> PrimitiveArray<u64> {
let state = new_state!();
unary(array, |x| state.hash_one(x), DataType::UInt64)
}
#[multiversion]
#[clone(target = "x86_64+aes+sse3+ssse3+avx+avx2")]
pub fn hash_boolean(array: &BooleanArray) -> PrimitiveArray<u64> {
let state = new_state!();
let values = array
.values_iter()
.map(|x| state.hash_one(x))
.collect::<Vec<_>>()
.into();
PrimitiveArray::<u64>::new(DataType::UInt64, values, array.validity().cloned())
}
#[multiversion]
#[clone(target = "x86_64+aes+sse3+ssse3+avx+avx2")]
pub fn hash_utf8<O: Offset>(array: &Utf8Array<O>) -> PrimitiveArray<u64> {
let state = new_state!();
let values = array
.values_iter()
.map(|x| state.hash_one(x.as_bytes()))
.collect::<Vec<_>>()
.into();
PrimitiveArray::<u64>::new(DataType::UInt64, values, array.validity().cloned())
}
pub fn hash_binary<O: Offset>(array: &BinaryArray<O>) -> PrimitiveArray<u64> {
let state = new_state!();
let values = array
.values_iter()
.map(|x| state.hash_one(x))
.collect::<Vec<_>>()
.into();
PrimitiveArray::<u64>::new(DataType::UInt64, values, array.validity().cloned())
}
macro_rules! with_match_primitive_type {(
$key_type:expr, | $_:tt $T:ident | $($body:tt)*
) => ({
macro_rules! __with_ty__ {( $_ $T:ident ) => ( $($body)* )}
use crate::datatypes::PrimitiveType::*;
use crate::types::{days_ms, months_days_ns};
match $key_type {
Int8 => __with_ty__! { i8 },
Int16 => __with_ty__! { i16 },
Int32 => __with_ty__! { i32 },
Int64 => __with_ty__! { i64 },
Int128 => __with_ty__! { i128 },
DaysMs => __with_ty__! { days_ms },
MonthDayNano => __with_ty__! { months_days_ns },
UInt8 => __with_ty__! { u8 },
UInt16 => __with_ty__! { u16 },
UInt32 => __with_ty__! { u32 },
UInt64 => __with_ty__! { u64 },
_ => return Err(Error::NotYetImplemented(format!(
"Hash not implemented for type {:?}",
$key_type
)))
}
})}
pub fn hash(array: &dyn Array) -> Result<PrimitiveArray<u64>> {
use PhysicalType::*;
Ok(match array.data_type().to_physical_type() {
Boolean => hash_boolean(array.as_any().downcast_ref().unwrap()),
Primitive(primitive) => with_match_primitive_type!(primitive, |$T| {
hash_primitive::<$T>(array.as_any().downcast_ref().unwrap())
}),
Binary => hash_binary::<i32>(array.as_any().downcast_ref().unwrap()),
LargeBinary => hash_binary::<i64>(array.as_any().downcast_ref().unwrap()),
Utf8 => hash_utf8::<i32>(array.as_any().downcast_ref().unwrap()),
LargeUtf8 => hash_utf8::<i64>(array.as_any().downcast_ref().unwrap()),
t => {
return Err(Error::NotYetImplemented(format!(
"Hash not implemented for type {:?}",
t
)))
}
})
}
pub fn can_hash(data_type: &DataType) -> bool {
matches!(
data_type.to_physical_type(),
PhysicalType::Boolean
| PhysicalType::Primitive(PrimitiveType::Int8)
| PhysicalType::Primitive(PrimitiveType::Int16)
| PhysicalType::Primitive(PrimitiveType::Int32)
| PhysicalType::Primitive(PrimitiveType::Int64)
| PhysicalType::Primitive(PrimitiveType::Int128)
| PhysicalType::Primitive(PrimitiveType::DaysMs)
| PhysicalType::Primitive(PrimitiveType::MonthDayNano)
| PhysicalType::Primitive(PrimitiveType::UInt8)
| PhysicalType::Primitive(PrimitiveType::UInt16)
| PhysicalType::Primitive(PrimitiveType::UInt32)
| PhysicalType::Primitive(PrimitiveType::UInt64)
| PhysicalType::Binary
| PhysicalType::LargeBinary
| PhysicalType::Utf8
| PhysicalType::LargeUtf8
)
}