| // *************************************************************************************************************************** |
| // * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file * |
| // * distributed with this work for additional information regarding copyright ownership. The ASF 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.apache.juneau.utils; |
| |
| import java.util.*; |
| |
| /** |
| * An extension of {@link LinkedHashSet} with a convenience {@link #append(Object)} method. |
| * |
| * <p> |
| * Primarily used for testing purposes for quickly creating populated sets. |
| * <p class='bcode w800'> |
| * <jc>// Example:</jc> |
| * Set<String> s = <jk>new</jk> ASet<String>().append(<js>"foo"</js>).append(<js>"bar"</js>); |
| * </p> |
| * |
| * @param <T> The entry type. |
| */ |
| @SuppressWarnings({"unchecked"}) |
| public final class ASet<T> extends LinkedHashSet<T> { |
| |
| private static final long serialVersionUID = 1L; |
| |
| /** |
| * Convenience method for creating a list of objects. |
| * |
| * @param t The initial values. |
| * @return A new list. |
| */ |
| @SafeVarargs |
| public static <T> ASet<T> create(T...t) { |
| return new ASet<T>().appendAll(t); |
| } |
| |
| /** |
| * Convenience method for creating a list of objects. |
| * |
| * <p> |
| * Identical to {@link #create(Object...)}. |
| * |
| * @param t The initial values. |
| * @return A new list. |
| */ |
| @SafeVarargs |
| public static <T> ASet<T> of(T...t) { |
| return new ASet<T>().appendAll(t); |
| } |
| |
| /** |
| * Adds an entry to this set. |
| * |
| * @param t The entry to add to this set. |
| * @return This object (for method chaining). |
| */ |
| public ASet<T> append(T t) { |
| add(t); |
| return this; |
| } |
| |
| /** |
| * Adds multiple entries to this set. |
| * |
| * @param t The entries to add to this set. |
| * @return This object (for method chaining). |
| */ |
| public ASet<T> appendAll(T...t) { |
| addAll(Arrays.asList(t)); |
| return this; |
| } |
| |
| /** |
| * Adds a value to this set if the boolean value is <jk>true</jk> |
| * |
| * @param b The boolean value. |
| * @param t The value to add. |
| * @return This object (for method chaining). |
| */ |
| public ASet<T> appendIf(boolean b, T t) { |
| if (b) |
| append(t); |
| return this; |
| } |
| } |