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.discovery;
  
  import org.apache.atlas.repository.graphdb.AtlasVertex;
  import org.apache.atlas.utils.AtlasPerfTracer;
  import org.apache.commons.collections.CollectionUtils;
  import org.apache.commons.collections.MapUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.ArrayList;
  import java.util.LinkedHashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.stream.Collectors;
  
  public class TermSearchProcessor extends SearchProcessor {
      private static final Logger LOG      = LoggerFactory.getLogger(TermSearchProcessor.class);
      private static final Logger PERF_LOG = AtlasPerfTracer.getPerfLogger("TermSearchProcessor");
  
      public static final String ATLAS_GLOSSARY_TERM_ENTITY_TYPE            = "AtlasGlossaryTerm";
      public static final String ATLAS_GLOSSARY_TERM_ATTR_QNAME             = "qualifiedName";
      public static final String ATLAS_GLOSSARY_TERM_ATTR_ASSIGNED_ENTITIES = "assignedEntities";
      public static final String ATLAS_GLOSSARY_TERM_ATTR_MEANINGS          = "meanings";
  
      final List<AtlasVertex> assignedEntities;
  
      public TermSearchProcessor(SearchContext context, List<AtlasVertex> assignedEntities) {
          super(context);
  
          this.assignedEntities = assignedEntities;
      }
  
      @Override
      public List<AtlasVertex> execute() {
          LOG.debug("==> TermSearchProcessor.execute({})", context);
  
          List<AtlasVertex> ret  = new ArrayList<>();
          AtlasPerfTracer   perf = null;
  
          if (AtlasPerfTracer.isPerfTraceEnabled(PERF_LOG)) {
              perf = AtlasPerfTracer.getPerfTracer(PERF_LOG, "TermSearchProcessor.execute(" + context + ")");
          }
  
          //marker functionality will not work when there is need to fetch Term vertices and get entities from it
          try {
              if (CollectionUtils.isNotEmpty(assignedEntities)) {
                  LinkedHashMap<Integer, AtlasVertex> offsetEntityVertexMap = new LinkedHashMap<>();
  
                  final int               startIdx = context.getSearchParameters().getOffset();
                  final int               limit    = context.getSearchParameters().getLimit();
                  final List<AtlasVertex> tmpList  = new ArrayList<>(assignedEntities);
  
                  for (int i = 0; i < tmpList.size(); i++) {
                      offsetEntityVertexMap.put(i, tmpList.get(i));
                  }
  
                  offsetEntityVertexMap = super.filter(offsetEntityVertexMap);
  
                  collectResultVertices(ret, startIdx, limit, 0, offsetEntityVertexMap, null);
              }
          } finally {
              AtlasPerfTracer.log(perf);
          }
  
          LOG.debug("<== TermSearchProcessor.execute({}): ret.size()={}", context, ret.size());
  
          return ret;
      }
  
      @Override
      public long getResultCount() {
          return assignedEntities != null ? assignedEntities.size() : -1;
      }
  
      //this filter is never used
      @Override
      public LinkedHashMap<Integer, AtlasVertex> filter(LinkedHashMap<Integer, AtlasVertex> offsetEntityVertexMap) {
          LOG.debug("==> TermSearchProcessor.filter({})", offsetEntityVertexMap.size());
  
          if (MapUtils.isNotEmpty(offsetEntityVertexMap)) {
              if (CollectionUtils.isEmpty(assignedEntities)) {
                  offsetEntityVertexMap.clear();
              } else {
                  offsetEntityVertexMap = offsetEntityVertexMap.entrySet().stream().filter(o -> {
                      if (o instanceof AtlasVertex) {
                          AtlasVertex entityVertex = (AtlasVertex) o;
  
                          for (AtlasVertex assignedEntity : assignedEntities) {
                              if (assignedEntity.getId().equals(entityVertex.getId())) {
                                  return true;
                              }
                          }
                      }
  
                      return false;
                  }).collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue, (x, y) -> y, LinkedHashMap::new));
              }
          }
  
          offsetEntityVertexMap = super.filter(offsetEntityVertexMap);
  
          LOG.debug("<== TermSearchProcessor.filter(): ret.size()={}", offsetEntityVertexMap.size());
  
          return offsetEntityVertexMap;
      }
  }
  