| /* |
| * Copyright 2016 Open Networking Laboratory |
| * |
| * 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.service; |
| |
| import java.util.List; |
| import java.util.function.Function; |
| |
| import org.onosproject.store.primitives.MapUpdate; |
| import org.onosproject.store.primitives.TransactionId; |
| |
| import com.google.common.base.MoreObjects; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Lists; |
| |
| /** |
| * Collection of map updates to be committed atomically. |
| * |
| * @param <K> key type |
| * @param <V> value type |
| */ |
| public class MapTransaction<K, V> { |
| |
| private final TransactionId transactionId; |
| private final List<MapUpdate<K, V>> updates; |
| |
| public MapTransaction(TransactionId transactionId, List<MapUpdate<K, V>> updates) { |
| this.transactionId = transactionId; |
| this.updates = ImmutableList.copyOf(updates); |
| } |
| |
| /** |
| * Returns the transaction identifier. |
| * |
| * @return transaction id |
| */ |
| public TransactionId transactionId() { |
| return transactionId; |
| } |
| |
| /** |
| * Returns the list of map updates. |
| * |
| * @return map updates |
| */ |
| public List<MapUpdate<K, V>> updates() { |
| return updates; |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(getClass()) |
| .add("transactionId", transactionId) |
| .add("updates", updates) |
| .toString(); |
| } |
| |
| /** |
| * Maps this instance to another {@code MapTransaction} with different key and value types. |
| * |
| * @param keyMapper function for mapping key types |
| * @param valueMapper function for mapping value types |
| * @return newly typed instance |
| * |
| * @param <S> key type of returned instance |
| * @param <T> value type of returned instance |
| */ |
| public <S, T> MapTransaction<S, T> map(Function<K, S> keyMapper, Function<V, T> valueMapper) { |
| return new MapTransaction<>(transactionId, Lists.transform(updates, u -> u.map(keyMapper, valueMapper))); |
| } |
| } |