1 /*
2 * Copyright 2015 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16
17 package io.netty.util;
18
19 /**
20 * Builder for immutable {@link DomainNameMapping} instances.
21 *
22 * @param <V> concrete type of value objects
23 * @deprecated Use {@link DomainWildcardMappingBuilder} instead.
24 */
25 @Deprecated
26 public final class DomainMappingBuilder<V> {
27
28 private final DomainNameMappingBuilder<V> builder;
29
30 /**
31 * Constructor with default initial capacity of the map holding the mappings
32 *
33 * @param defaultValue the default value for {@link DomainNameMapping#map(String)} to return
34 * when nothing matches the input
35 */
36 public DomainMappingBuilder(V defaultValue) {
37 builder = new DomainNameMappingBuilder<V>(defaultValue);
38 }
39
40 /**
41 * Constructor with initial capacity of the map holding the mappings
42 *
43 * @param initialCapacity initial capacity for the internal map
44 * @param defaultValue the default value for {@link DomainNameMapping#map(String)} to return
45 * when nothing matches the input
46 */
47 public DomainMappingBuilder(int initialCapacity, V defaultValue) {
48 builder = new DomainNameMappingBuilder<V>(initialCapacity, defaultValue);
49 }
50
51 /**
52 * Adds a mapping that maps the specified (optionally wildcard) host name to the specified output value.
53 * Null values are forbidden for both hostnames and values.
54 * <p>
55 * <a href="https://en.wikipedia.org/wiki/Wildcard_DNS_record">DNS wildcard</a> is supported as hostname.
56 * For example, you can use {@code *.netty.io} to match {@code netty.io} and {@code downloads.netty.io}.
57 * </p>
58 *
59 * @param hostname the host name (optionally wildcard)
60 * @param output the output value that will be returned by {@link DomainNameMapping#map(String)}
61 * when the specified host name matches the specified input host name
62 */
63 public DomainMappingBuilder<V> add(String hostname, V output) {
64 builder.add(hostname, output);
65 return this;
66 }
67
68 /**
69 * Creates a new instance of immutable {@link DomainNameMapping}
70 * Attempts to add new mappings to the result object will cause {@link UnsupportedOperationException} to be thrown
71 *
72 * @return new {@link DomainNameMapping} instance
73 */
74 public DomainNameMapping<V> build() {
75 return builder.build();
76 }
77 }
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