| /* |
| * 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.hyracks.storage.common; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| |
| public class TransientLocalResourceRepository implements ILocalResourceRepository { |
| |
| private Map<String, LocalResource> name2ResourceMap = new HashMap<>(); |
| private Map<Long, LocalResource> id2ResourceMap = new HashMap<>(); |
| |
| @Override |
| public LocalResource get(String path) throws HyracksDataException { |
| return name2ResourceMap.get(path); |
| } |
| |
| @Override |
| public synchronized void insert(LocalResource resource) throws HyracksDataException { |
| long id = resource.getId(); |
| |
| if (id2ResourceMap.containsKey(id)) { |
| throw new HyracksDataException("Duplicate resource"); |
| } |
| id2ResourceMap.put(id, resource); |
| name2ResourceMap.put(resource.getPath(), resource); |
| } |
| |
| @Override |
| public synchronized void delete(String path) throws HyracksDataException { |
| LocalResource resource = name2ResourceMap.get(path); |
| if (resource == null) { |
| throw new HyracksDataException("Resource doesn't exist"); |
| } |
| id2ResourceMap.remove(resource.getId()); |
| name2ResourceMap.remove(path); |
| } |
| |
| @Override |
| public long maxId() throws HyracksDataException { |
| long maxResourceId = 0; |
| |
| for (Long resourceId : id2ResourceMap.keySet()) { |
| maxResourceId = Math.max(maxResourceId, resourceId); |
| } |
| return maxResourceId; |
| } |
| } |