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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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.atlas.examples.sampleapp;
  
  import org.apache.atlas.AtlasClientV2;
  import org.apache.atlas.AtlasServiceException;
  import org.apache.atlas.model.instance.AtlasEntityHeader;
  import org.apache.atlas.model.lineage.AtlasLineageInfo;
  
  import java.util.Map;
  import java.util.Set;
  
  public class LineageExample {
      private AtlasClientV2 atlasClient;
  
      LineageExample(AtlasClientV2 atlasClient) {
          this.atlasClient = atlasClient;
      }
  
      public void lineage(String guid) throws AtlasServiceException {
          AtlasLineageInfo                      lineageInfo   = atlasClient.getLineageInfo(guid, AtlasLineageInfo.LineageDirection.BOTH, 0);
          Set<AtlasLineageInfo.LineageRelation> relations     = lineageInfo.getRelations();
          Map<String, AtlasEntityHeader>        guidEntityMap = lineageInfo.getGuidEntityMap();
  
          for (AtlasLineageInfo.LineageRelation relation : relations) {
              AtlasEntityHeader fromEntity = guidEntityMap.get(relation.getFromEntityId());
              AtlasEntityHeader toEntity   = guidEntityMap.get(relation.getToEntityId());
  
              SampleApp.log(fromEntity.getDisplayText() + "(" + fromEntity.getTypeName() + ") -> " +
                      toEntity.getDisplayText() + "(" + toEntity.getTypeName() + ")");
          }
      }
  }
  