| /* |
| * 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.service; |
| |
| import java.util.List; |
| import java.util.Objects; |
| import java.util.function.Function; |
| |
| import com.google.common.base.MoreObjects; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Lists; |
| import org.onosproject.store.primitives.TransactionId; |
| |
| /** |
| * Collection of transaction updates to be applied atomically. |
| * |
| * @param <T> log record type |
| */ |
| public class TransactionLog<T> { |
| private final TransactionId transactionId; |
| private final long version; |
| private final List<T> records; |
| |
| public TransactionLog(TransactionId transactionId, long version, List<T> records) { |
| this.transactionId = transactionId; |
| this.version = version; |
| this.records = ImmutableList.copyOf(records); |
| } |
| |
| /** |
| * Returns the transaction identifier. |
| * |
| * @return transaction id |
| */ |
| public TransactionId transactionId() { |
| return transactionId; |
| } |
| |
| /** |
| * Returns the transaction lock version. |
| * |
| * @return the transaction lock version |
| */ |
| public long version() { |
| return version; |
| } |
| |
| /** |
| * Returns the list of transaction log records. |
| * |
| * @return a list of transaction log records |
| */ |
| public List<T> records() { |
| return records; |
| } |
| |
| @Override |
| public boolean equals(Object object) { |
| if (object instanceof TransactionLog) { |
| TransactionLog that = (TransactionLog) object; |
| return this.transactionId.equals(that.transactionId) |
| && this.records.equals(that.records); |
| } |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(transactionId, records); |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(getClass()) |
| .add("transactionId", transactionId) |
| .add("version", version) |
| .add("records", records) |
| .toString(); |
| } |
| |
| /** |
| * Maps this instance to another {@code MapTransaction} with different key and value types. |
| * |
| * @param mapper function for mapping record types |
| * @return newly typed instance |
| * |
| * @param <U> record type of returned instance |
| */ |
| public <U> TransactionLog<U> map(Function<T, U> mapper) { |
| return new TransactionLog<>(transactionId, version, Lists.transform(records, mapper::apply)); |
| } |
| } |