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.discovery.AtlasQuickSearchResult;
  import org.apache.atlas.model.discovery.AtlasSearchResult;
  import org.apache.atlas.model.instance.AtlasEntityHeader;
  
  import java.util.List;
  
  public class DiscoveryExample {
      private static final String[] DSL_QUERIES = new String[] {"from DataSet", "from Process"};
  
      private final AtlasClientV2 client;
  
      DiscoveryExample(AtlasClientV2 client) {
          this.client = client;
      }
  
      public void testSearch() {
          for (String dslQuery : DSL_QUERIES) {
              try {
                  AtlasSearchResult       result      = client.dslSearchWithParams(dslQuery, 10, 0);
                  List<AtlasEntityHeader> entities    = result != null ? result.getEntities() : null;
                  int                     resultCount = entities == null ? 0 : entities.size();
  
                  SampleApp.log("DSL Query: " + dslQuery);
                  SampleApp.log("  result count: " + resultCount);
  
                  for (int i = 0; i < resultCount; i++) {
                      SampleApp.log("  result # " + (i + 1) + ": " + entities.get(i));
                  }
              } catch (Exception e) {
                  SampleApp.log("query -: " + dslQuery + " failed");
              }
          }
      }
  
      public void quickSearch(String searchString) {
          try {
              AtlasQuickSearchResult  result      = client.quickSearch(searchString, SampleAppConstants.TABLE_TYPE, false, 2, 0);
              List<AtlasEntityHeader> entities    = result != null && result.getSearchResults() != null ? result.getSearchResults().getEntities() : null;
              int                     resultCount = entities == null ? 0 : entities.size();
  
              SampleApp.log("Quick search: query-string=" + searchString);
              SampleApp.log("  result count: " + resultCount);
  
              for (int i = 0; i < resultCount; i++) {
                  SampleApp.log("  result # " + (i + 1) + ": " + entities.get(i));
              }
          } catch (AtlasServiceException e) {
              e.printStackTrace();
          }
      }
  
      public void basicSearch(String typeName, String classification, String query) {
          try {
              AtlasSearchResult       result      = client.basicSearch(typeName, classification, query, false, 2, 0);
              List<AtlasEntityHeader> entities    = result != null ? result.getEntities() : null;
              int                     resultCount = entities == null ? 0 : entities.size();
  
              SampleApp.log("Basic search: typeName=" + typeName + ", classification=" + classification + ", query=" + query);
              SampleApp.log("  result count: " + resultCount);
  
              for (int i = 0; i < resultCount; i++) {
                  SampleApp.log("  result # " + (i + 1) + ": " + entities.get(i));
              }
          } catch (AtlasServiceException e) {
              e.printStackTrace();
          }
      }
  }
  