blob: 2ec9dd7bb83aaa900f6b2edd6700f7ea8ff51c86 (
plain) (
blame)
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
|
// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.component;
/**
* Code common to ComponentId and ComponentSpecification
*
* @author Tony Vaagenes
*/
final class Spec<VERSION> {
private final VersionHandler<VERSION> versionHandler;
interface VersionHandler<VERSION> {
VERSION emptyVersion();
int compare(VERSION v1, VERSION v2);
}
final String name;
final VERSION version;
final ComponentId namespace;
@SuppressWarnings("unchecked")
Spec(VersionHandler<VERSION> versionHandler, String name, VERSION version, ComponentId namespace) {
assert (name != null);
validateName(name);
this.versionHandler = versionHandler;
this.name = name;
this.version = version == null ? versionHandler.emptyVersion() : version;
this.namespace = namespace;
}
String createStringValue() {
if (isNonEmpty(version) || (namespace != null)) {
StringBuilder builder = new StringBuilder(name);
if (isNonEmpty(version))
builder.append(':').append(version);
if (namespace != null)
builder.append('@').append(namespace.stringValue());
return builder.toString();
} else {
return name;
}
}
private void validateName(String name) {
if ( name == null || name.isEmpty() || name.contains("@") || name.contains(":")) {
throw new IllegalArgumentException("The name '" + name + "' is expected to be non-empty and not contain {:, @}");
}
}
@Override
public String toString() {
if (isNonEmpty(version) || (namespace != null)) {
StringBuilder builder = new StringBuilder(name);
if (isNonEmpty(version)) {
builder.append(':').append(version);
}
if (namespace != null) {
builder.append(" in ").append(namespace.toString());
}
return builder.toString();
} else {
return name;
}
}
private boolean isNonEmpty(VERSION version) {
return ! version.equals(versionHandler.emptyVersion());
}
public int compareTo(Spec<VERSION> other) {
int result = name.compareTo(other.name);
if (result != 0)
return result;
result = versionHandler.compare(version, other.version);
if (result != 0)
return result;
return compare(namespace, other.namespace);
}
private int compare(ComponentId n1, ComponentId n2) {
if (n1 == null && n2 == null)
return 0;
if (n1 == null)
return -1;
if (n2 == null)
return 1;
return n1.compareTo(n2);
}
}
|
