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- package org.apache.archiva.admin.repository.proxyconnector;
- /*
- * 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.
- */
-
- import org.apache.archiva.admin.model.beans.ProxyConnector;
-
- import java.util.Comparator;
-
- /**
- * @author Olivier Lamy
- * @since 1.4-M3
- */
- public class ProxyConnectorOrderComparator
- implements Comparator<ProxyConnector>
- {
- private static ProxyConnectorOrderComparator INSTANCE = new ProxyConnectorOrderComparator();
-
- @Override
- public int compare( ProxyConnector o1, ProxyConnector o2 )
- {
- if ( o1 == null && o2 == null )
- {
- return 0;
- }
-
- // Ensure null goes to end of list.
- if ( o1 == null && o2 != null )
- {
- return 1;
- }
-
- if ( o1 != null && o2 == null )
- {
- return -1;
- }
-
- // Ensure 0 (unordered) goes to end of list.
- if ( o1.getOrder() == 0 && o2.getOrder() != 0 )
- {
- return 1;
- }
-
- if ( o1.getOrder() != 0 && o2.getOrder() == 0 )
- {
- return -1;
- }
-
- return o1.getOrder() - o2.getOrder();
- }
-
- public static ProxyConnectorOrderComparator getInstance()
- {
- return INSTANCE;
- }
- }
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