content: /*
   * 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.asterix.common.dataflow;
  
  import org.apache.hyracks.api.application.INCServiceContext;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  import org.apache.hyracks.api.io.IJsonSerializable;
  import org.apache.hyracks.api.io.IPersistedResourceRegistry;
  import org.apache.hyracks.storage.common.IIndex;
  import org.apache.hyracks.storage.common.IResource;
  
  import com.fasterxml.jackson.databind.JsonNode;
  import com.fasterxml.jackson.databind.node.ObjectNode;
  
  /**
   * A local resource with a dataset id and an assigned partition
   */
  public class DatasetLocalResource implements IResource {
  
      private static final long serialVersionUID = 1L;
      /**
       * The dataset id
       */
      private final int datasetId;
      /**
       * The resource partition
       */
      private int partition;
      private final IResource resource;
  
      public DatasetLocalResource(int datasetId, int partition, IResource resource) {
          this.datasetId = datasetId;
          this.partition = partition;
          this.resource = resource;
      }
  
      public int getPartition() {
          return partition;
      }
  
      public int getDatasetId() {
          return datasetId;
      }
  
      @Override
      public String getPath() {
          return resource.getPath();
      }
  
      @Override
      public void setPath(String path) {
          resource.setPath(path);
      }
  
      public void setPartition(int partition) {
          this.partition = partition;
      }
  
      public IResource getResource() {
          return resource;
      }
  
      @Override
      public IIndex createInstance(INCServiceContext ncServiceCtx) throws HyracksDataException {
          return resource.createInstance(ncServiceCtx);
      }
  
      @Override
      public JsonNode toJson(IPersistedResourceRegistry registry) throws HyracksDataException {
          ObjectNode json = registry.getClassIdentifier(getClass(), serialVersionUID);
          json.put("datasetId", datasetId);
          json.put("partition", partition);
          json.set("resource", resource.toJson(registry));
          return json;
      }
  
      public static IJsonSerializable fromJson(IPersistedResourceRegistry registry, JsonNode json)
              throws HyracksDataException {
          final int datasetId = json.get("datasetId").asInt();
          final int partition = json.get("partition").asInt();
          final IResource resource = (IResource) registry.deserialize(json.get("resource"));
          return new DatasetLocalResource(datasetId, partition, resource);
      }
  }
  