37599eb48f
* Reduces checkstyle errors in feature-toggle * Reduces checkstyle errors in fluentinterface * Reduces checkstyle errors in flux * Reduces checkstyle errors in flyweight * Reduces checkstyle errors in front-controller
86 lines
3.0 KiB
Java
86 lines
3.0 KiB
Java
/*
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* The MIT License
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* Copyright © 2014-2019 Ilkka Seppälä
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package com.iluwatar.featuretoggle.user;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* Contains the lists of users of different groups paid and free. Used to demonstrate the tiered
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* example of feature toggle. Allowing certain features to be available to only certain groups of
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* users.
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*
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* @see User
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*/
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public class UserGroup {
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private static List<User> freeGroup = new ArrayList<>();
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private static List<User> paidGroup = new ArrayList<>();
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/**
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* Add the passed {@link User} to the free user group list.
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*
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* @param user {@link User} to be added to the free group
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* @throws IllegalArgumentException when user is already added to the paid group
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* @see User
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*/
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public static void addUserToFreeGroup(final User user) throws IllegalArgumentException {
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if (paidGroup.contains(user)) {
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throw new IllegalArgumentException("User all ready member of paid group.");
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} else {
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if (!freeGroup.contains(user)) {
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freeGroup.add(user);
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}
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}
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}
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/**
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* Add the passed {@link User} to the paid user group list.
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*
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* @param user {@link User} to be added to the paid group
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* @throws IllegalArgumentException when the user is already added to the free group
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* @see User
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*/
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public static void addUserToPaidGroup(final User user) throws IllegalArgumentException {
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if (freeGroup.contains(user)) {
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throw new IllegalArgumentException("User all ready member of free group.");
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} else {
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if (!paidGroup.contains(user)) {
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paidGroup.add(user);
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}
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}
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}
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/**
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* Method to take a {@link User} to determine if the user is in the {@link UserGroup#paidGroup}.
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*
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* @param user {@link User} to check if they are in the {@link UserGroup#paidGroup}
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* @return true if the {@link User} is in {@link UserGroup#paidGroup}
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*/
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public static boolean isPaid(User user) {
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return paidGroup.contains(user);
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}
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}
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