| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.nifi.registry.revision.standard; |
| |
| import org.apache.nifi.registry.revision.api.Revision; |
| |
| import java.util.Comparator; |
| import java.util.Objects; |
| |
| public class RevisionComparator implements Comparator<Revision> { |
| |
| @Override |
| public int compare(final Revision o1, final Revision o2) { |
| final int entityComparison = o1.getEntityId().compareTo(o2.getEntityId()); |
| if (entityComparison != 0) { |
| return entityComparison; |
| } |
| |
| final Comparator<String> nullSafeStringComparator = Comparator.nullsFirst(String::compareTo); |
| final int clientComparison = Objects.compare(o1.getClientId(), o2.getClientId(), nullSafeStringComparator); |
| if (clientComparison != 0) { |
| return clientComparison; |
| } |
| |
| return o1.getVersion().compareTo(o2.getVersion()); |
| } |
| |
| } |
