blob: 6b3b18c443c15b651a1ab4183816c01501bb88ba (
plain)
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
|
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.
*/
package org.elasticsearch.common.text;
import org.elasticsearch.common.bytes.BytesArray;
import org.elasticsearch.common.bytes.BytesReference;
import java.nio.charset.StandardCharsets;
/**
* Both {@link String} and {@link BytesReference} representation of the text. Starts with one of those, and if
* the other is requests, caches the other one in a local reference so no additional conversion will be needed.
*/
public final class Text implements Comparable<Text> {
public static final Text[] EMPTY_ARRAY = new Text[0];
public static Text[] convertFromStringArray(String[] strings) {
if (strings.length == 0) {
return EMPTY_ARRAY;
}
Text[] texts = new Text[strings.length];
for (int i = 0; i < strings.length; i++) {
texts[i] = new Text(strings[i]);
}
return texts;
}
private BytesReference bytes;
private String text;
private int hash;
public Text(BytesReference bytes) {
this.bytes = bytes;
}
public Text(String text) {
this.text = text;
}
/**
* Whether a {@link BytesReference} view of the data is already materialized.
*/
public boolean hasBytes() {
return bytes != null;
}
/**
* Returns a {@link BytesReference} view of the data.
*/
public BytesReference bytes() {
if (bytes == null) {
bytes = new BytesArray(text.getBytes(StandardCharsets.UTF_8));
}
return bytes;
}
/**
* Whether a {@link String} view of the data is already materialized.
*/
public boolean hasString() {
return text != null;
}
/**
* Returns a {@link String} view of the data.
*/
public String string() {
if (text == null) {
if (!bytes.hasArray()) {
bytes = bytes.toBytesArray();
}
text = new String(bytes.array(), bytes.arrayOffset(), bytes.length(), StandardCharsets.UTF_8);
}
return text;
}
@Override
public String toString() {
return string();
}
@Override
public int hashCode() {
if (hash == 0) {
hash = bytes().hashCode();
}
return hash;
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
return bytes().equals(((Text) obj).bytes());
}
@Override
public int compareTo(Text text) {
return UTF8SortedAsUnicodeComparator.utf8SortedAsUnicodeSortOrder.compare(bytes(), text.bytes());
}
}
|
