| /* |
| * Copyright (C) 2021 The Android Open Source Project |
| * |
| * Licensed 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 com.android.queryable.queries; |
| |
| import com.android.queryable.Queryable; |
| |
| import java.io.Serializable; |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| public final class EnumQueryHelper <E extends Queryable, F> implements EnumQuery<E, F>, Serializable { |
| |
| private final E mQuery; |
| private Set<F> mIsEqualTo = null; |
| private Set<F> mIsNotEqualTo = null; |
| |
| public EnumQueryHelper(E query) { |
| mQuery = query; |
| } |
| |
| @Override |
| public E isEqualTo(F value) { |
| if (mIsEqualTo != null) { |
| throw new IllegalStateException("isEqualTo or isOneOf already specified"); |
| } |
| mIsEqualTo = new HashSet<>(); |
| mIsEqualTo.add(value); |
| |
| return mQuery; |
| } |
| |
| @Override |
| public E isNotEqualTo(F value) { |
| if (mIsNotEqualTo != null) { |
| throw new IllegalStateException("isNotEqualTo or isNotOneOf already specified"); |
| } |
| mIsNotEqualTo = new HashSet<>(); |
| mIsNotEqualTo.add(value); |
| |
| return mQuery; |
| } |
| |
| @Override |
| public E isOneOf(F... values) { |
| if (mIsEqualTo != null) { |
| throw new IllegalStateException("isEqualTo or isOneOf already specified"); |
| } |
| mIsEqualTo = new HashSet<>(); |
| mIsEqualTo.addAll(Arrays.asList(values)); |
| |
| return mQuery; |
| } |
| |
| @Override |
| public E isNotOneOf(F... values) { |
| if (mIsNotEqualTo != null) { |
| throw new IllegalStateException("isNotEqualTo or isNotOneOf already specified"); |
| } |
| mIsNotEqualTo = new HashSet<>(); |
| mIsNotEqualTo.addAll(Arrays.asList(values)); |
| |
| return mQuery; |
| } |
| |
| @Override |
| public boolean matches(F value) { |
| if (!checkIsEqualTo(value)) { |
| return false; |
| } |
| |
| if (!checkIsNotEqualTo(value)) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| private boolean checkIsEqualTo(F value) { |
| if (mIsEqualTo == null) { |
| return true; |
| } |
| |
| for (F v : mIsEqualTo) { |
| if (v == value) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| private boolean checkIsNotEqualTo(F value) { |
| if (mIsNotEqualTo == null) { |
| return true; |
| } |
| |
| for (F v : mIsNotEqualTo) { |
| if (v == value) { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| } |