-
Notifications
You must be signed in to change notification settings - Fork 225
/
ShortFieldComparatorImpl.java
124 lines (108 loc) · 3.63 KB
/
ShortFieldComparatorImpl.java
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
/**
*
* Copyright (c) 2006-2017, Speedment, Inc. 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.
*/
package com.speedment.runtime.field.internal.comparator;
import com.speedment.common.annotation.GeneratedCode;
import com.speedment.runtime.field.comparator.FieldComparator;
import com.speedment.runtime.field.comparator.NullOrder;
import com.speedment.runtime.field.trait.HasShortValue;
import java.util.Objects;
import static com.speedment.common.invariant.NullUtil.requireNonNulls;
import static java.util.Objects.requireNonNull;
/**
* @param <ENTITY> entity type
* @param <D> database type
*
* @author Emil Forslund
* @since 3.0.0
*/
@GeneratedCode(value = "Speedment")
public final class ShortFieldComparatorImpl<ENTITY, D> extends AbstractFieldComparator<ENTITY> implements ShortFieldComparator<ENTITY, D> {
private final HasShortValue<ENTITY, D> field;
private final boolean reversed;
public ShortFieldComparatorImpl(HasShortValue<ENTITY, D> field) {
this(field, false);
}
ShortFieldComparatorImpl(HasShortValue<ENTITY, D> field, boolean reversed) {
this.field = requireNonNull(field);
this.reversed = reversed;
}
@Override
public HasShortValue<ENTITY, D> getField() {
return field;
}
@Override
public NullOrder getNullOrder() {
return NullOrder.NONE;
}
@Override
public boolean isReversed() {
return reversed;
}
@Override
public FieldComparator<ENTITY> reversed() {
return new ShortFieldComparatorImpl<>(field, !reversed);
}
@Override
public int compare(ENTITY first, ENTITY second) {
requireNonNulls(first, second);
final short a = field.getAsShort(first);
final short b = field.getAsShort(second);
return applyReversed(Short.compare(a, b));
}
@Override
public int hashCode() {
return (4049 + Objects.hashCode(this.field.identifier())) * 3109
+ Boolean.hashCode(reversed);
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (!(obj instanceof FieldComparator)) return false;
@SuppressWarnings("unchecked")
final FieldComparator<ENTITY> casted =
(FieldComparator<ENTITY>) obj;
return reversed == casted.isReversed()
&& Objects.equals(
field.identifier(),
casted.getField().identifier()
);
}
@Override
public String toString() {
return "(order by " + field.identifier() + " " +
(reversed ? "descending" : "ascending") + ")";
}
private int applyReversed(int compare) {
if (compare == 0) {
return 0;
} else {
if (reversed) {
if (compare > 0) {
return -1;
} else {
return 1;
}
} else {
if (compare > 0) {
return 1;
} else {
return -1;
}
}
}
}
}