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
|
// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.flags.json;
import java.util.Objects;
import java.util.function.Function;
/**
* @author hakonhall
*/
public enum RelationalOperator {
EQUAL ("==", compareToValue -> compareToValue == 0),
NOT_EQUAL ("!=", compareToValue -> compareToValue != 0),
LESS_EQUAL ("<=", compareToValue -> compareToValue <= 0),
LESS ("<" , compareToValue -> compareToValue < 0),
GREATER_EQUAL(">=", compareToValue -> compareToValue >= 0),
GREATER (">" , compareToValue -> compareToValue > 0);
private String text;
private final Function<Integer, Boolean> compareToValuePredicate;
RelationalOperator(String text, Function<Integer, Boolean> compareToValuePredicate) {
this.text = text;
this.compareToValuePredicate = compareToValuePredicate;
}
public String toText() { return text; }
/** Returns true if 'left op right' is true, with 'op' being the operator represented by this. */
public <T extends Comparable<T>> boolean evaluate(T left, T right) {
Objects.requireNonNull(left);
Objects.requireNonNull(right);
return evaluate(left.compareTo(right));
}
public boolean evaluate(int compareToValue) {
return compareToValuePredicate.apply(compareToValue);
}
}
|
