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Java example source code file (DomainNameMappingBuilder.java)
The DomainNameMappingBuilder.java Java example source code/* * Copyright 2016 The Netty Project * * The Netty Project 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 io.netty.util; import java.util.Collections; import java.util.LinkedHashMap; import java.util.Map; import java.util.Set; import static io.netty.util.internal.ObjectUtil.checkNotNull; /** * Builder for immutable {@link DomainNameMapping} instances. * * @param <V> concrete type of value objects */ public final class DomainNameMappingBuilder<V> { private final V defaultValue; private final Map<String, V> map; /** * Constructor with default initial capacity of the map holding the mappings * * @param defaultValue the default value for {@link DomainNameMapping#map(String)} to return * when nothing matches the input */ public DomainNameMappingBuilder(V defaultValue) { this(4, defaultValue); } /** * Constructor with initial capacity of the map holding the mappings * * @param initialCapacity initial capacity for the internal map * @param defaultValue the default value for {@link DomainNameMapping#map(String)} to return * when nothing matches the input */ public DomainNameMappingBuilder(int initialCapacity, V defaultValue) { this.defaultValue = checkNotNull(defaultValue, "defaultValue"); map = new LinkedHashMap<String, V>(initialCapacity); } /** * Adds a mapping that maps the specified (optionally wildcard) host name to the specified output value. * Null values are forbidden for both hostnames and values. * <p> * <a href="http://en.wikipedia.org/wiki/Wildcard_DNS_record">DNS wildcard is supported as hostname. * For example, you can use {@code *.netty.io} to match {@code netty.io} and {@code downloads.netty.io}. * </p> * * @param hostname the host name (optionally wildcard) * @param output the output value that will be returned by {@link DomainNameMapping#map(String)} * when the specified host name matches the specified input host name */ public DomainNameMappingBuilder<V> add(String hostname, V output) { map.put(checkNotNull(hostname, "hostname"), checkNotNull(output, "output")); return this; } /** * Creates a new instance of immutable {@link DomainNameMapping} * Attempts to add new mappings to the result object will cause {@link UnsupportedOperationException} to be thrown * * @return new {@link DomainNameMapping} instance */ public DomainNameMapping<V> build() { return new ImmutableDomainNameMapping<V>(defaultValue, map); } /** * Immutable mapping from domain name pattern to its associated value object. * Mapping is represented by two arrays: keys and values. Key domainNamePatterns[i] is associated with values[i]. * * @param <V> concrete type of value objects */ private static final class ImmutableDomainNameMapping<V> extends DomainNameMapping Other Java examples (source code examples)Here is a short list of links related to this Java DomainNameMappingBuilder.java source code file: |
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