| /* |
| * Copyright 2017-present Open Networking Foundation |
| * |
| * 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 org.onosproject.store.primitives.impl; |
| |
| import java.util.Collection; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.stream.Collectors; |
| |
| import org.onosproject.store.service.AsyncConsistentMap; |
| import org.onosproject.store.service.Versioned; |
| |
| /** |
| * {@link org.onosproject.store.service.AsyncConsistentMap} that doesn't allow null values. |
| */ |
| public class NotNullAsyncConsistentMap<K, V> extends DelegatingAsyncConsistentMap<K, V> { |
| private final AsyncConsistentMap<K, V> delegateMap; |
| |
| public NotNullAsyncConsistentMap(AsyncConsistentMap<K, V> delegateMap) { |
| super(delegateMap); |
| this.delegateMap = delegateMap; |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> containsValue(V value) { |
| if (value == null) { |
| return CompletableFuture.completedFuture(false); |
| } |
| return super.containsValue(value); |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V>> get(K key) { |
| return super.get(key).thenApply(v -> v != null && v.value() == null ? null : v); |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V>> getOrDefault(K key, V defaultValue) { |
| return super.getOrDefault(key, defaultValue).thenApply(v -> v != null && v.value() == null ? null : v); |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V>> put(K key, V value) { |
| if (value == null) { |
| return super.remove(key); |
| } |
| return super.put(key, value); |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V>> putAndGet(K key, V value) { |
| if (value == null) { |
| return super.remove(key).thenApply(v -> null); |
| } |
| return super.putAndGet(key, value); |
| } |
| |
| @Override |
| public CompletableFuture<Collection<Versioned<V>>> values() { |
| return super.values().thenApply(value -> value.stream() |
| .filter(v -> v.value() != null) |
| .collect(Collectors.toList())); |
| } |
| |
| @Override |
| public CompletableFuture<Set<Map.Entry<K, Versioned<V>>>> entrySet() { |
| return super.entrySet().thenApply(entries -> entries.stream() |
| .filter(e -> e.getValue().value() != null) |
| .collect(Collectors.toSet())); |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V>> putIfAbsent(K key, V value) { |
| if (value == null) { |
| return super.remove(key); |
| } |
| return super.putIfAbsent(key, value); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> remove(K key, V value) { |
| if (value == null) { |
| return CompletableFuture.completedFuture(false); |
| } |
| return super.remove(key, value); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> remove(K key, long version) { |
| return super.remove(key, version); |
| } |
| |
| @Override |
| public CompletableFuture<Versioned<V>> replace(K key, V value) { |
| if (value == null) { |
| return super.remove(key); |
| } |
| return super.replace(key, value); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> replace(K key, V oldValue, V newValue) { |
| if (oldValue == null) { |
| return super.putIfAbsent(key, newValue).thenApply(Objects::isNull); |
| } else if (newValue == null) { |
| return super.remove(key, oldValue); |
| } |
| return super.replace(key, oldValue, newValue); |
| } |
| |
| @Override |
| public CompletableFuture<Boolean> replace(K key, long oldVersion, V newValue) { |
| return super.replace(key, oldVersion, newValue); |
| } |
| } |