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.repository.converters;
  
  import org.apache.atlas.AtlasErrorCode;
  import org.apache.atlas.exception.AtlasBaseException;
  import org.apache.atlas.model.TypeCategory;
  import org.apache.atlas.model.instance.AtlasEntity;
  import org.apache.atlas.model.instance.AtlasObjectId;
  import org.apache.atlas.type.AtlasEntityType;
  import org.apache.atlas.type.AtlasType;
  import org.apache.atlas.type.AtlasTypeRegistry;
  import org.apache.atlas.v1.model.instance.Id;
  import org.apache.atlas.v1.model.instance.Referenceable;
  import org.apache.commons.collections.MapUtils;
  import org.apache.commons.lang3.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.Map;
  
  public class AtlasObjectIdConverter extends AtlasAbstractFormatConverter {
      private static final Logger LOG = LoggerFactory.getLogger(AtlasObjectIdConverter.class);
  
      public AtlasObjectIdConverter(AtlasFormatConverters registry, AtlasTypeRegistry typeRegistry) {
          this(registry, typeRegistry, TypeCategory.OBJECT_ID_TYPE);
      }
  
      protected AtlasObjectIdConverter(AtlasFormatConverters registry, AtlasTypeRegistry typeRegistry, TypeCategory typeCategory) {
          super(registry, typeRegistry, typeCategory);
      }
  
      @Override
      public boolean isValidValueV1(Object v1Obj, AtlasType type) {
          boolean ret = (v1Obj == null) || v1Obj instanceof Id || v1Obj instanceof Referenceable;
  
          if (LOG.isDebugEnabled()) {
              LOG.debug("AtlasObjectIdConverter.isValidValueV1(type={}, value={}): {}", (v1Obj != null ? v1Obj.getClass().getCanonicalName() : null), v1Obj, ret);
          }
  
          return ret;
      }
  
      @Override
      public Object fromV1ToV2(Object v1Obj, AtlasType type, AtlasFormatConverter.ConverterContext converterContext) throws AtlasBaseException {
          Object ret = null;
  
          if (v1Obj != null) {
              if (v1Obj instanceof Id) {
                  Id id = (Id) v1Obj;
  
                  ret = new AtlasObjectId(id.getId(), id.getTypeName());
              } else if (v1Obj instanceof Referenceable) {
                  Referenceable refInst = (Referenceable) v1Obj;
                  String        guid    = refInst.getId().getId();
  
                  ret = new AtlasObjectId(guid, refInst.getTypeName());
  
                  if (!converterContext.entityExists(guid) && hasAnyAssignedAttribute(refInst)) {
                      AtlasEntityType            entityType = typeRegistry.getEntityTypeByName(refInst.getTypeName());
                      AtlasEntityFormatConverter converter  = (AtlasEntityFormatConverter) converterRegistry.getConverter(TypeCategory.ENTITY);
                      AtlasEntity                entity     = converter.fromV1ToV2(v1Obj, entityType, converterContext);
  
                      converterContext.addReferredEntity(entity);
                  }
              }
          }
  
          return ret;
      }
  
      @Override
      public Object fromV2ToV1(Object v2Obj, AtlasType type, ConverterContext converterContext) throws AtlasBaseException {
          Id ret = null;
  
          if (v2Obj != null) {
              if (v2Obj instanceof Map) {
                  Map<?, ?> v2Map    = (Map<?, ?>) v2Obj;
                  String    idStr    = (String) v2Map.get(AtlasObjectId.KEY_GUID);
                  String    typeName = (String) v2Map.get(AtlasObjectId.KEY_TYPENAME);
  
                  if (StringUtils.isEmpty(idStr)) {
                      throw new AtlasBaseException(AtlasErrorCode.INSTANCE_GUID_NOT_FOUND);
                  }
  
                  ret = new Id(idStr, 0, typeName);
              } else if (v2Obj instanceof AtlasObjectId) { // transient-id
                  AtlasObjectId objId = (AtlasObjectId) v2Obj;
  
                  ret = new Id(objId.getGuid(), 0, objId.getTypeName());
              } else if (v2Obj instanceof AtlasEntity) {
                  AtlasEntity entity = (AtlasEntity) v2Obj;
  
                  ret = new Id(entity.getGuid(), entity.getVersion() == null ? 0 : entity.getVersion().intValue(), entity.getTypeName());
              } else {
                  throw new AtlasBaseException(AtlasErrorCode.TYPE_CATEGORY_INVALID, type.getTypeCategory().name());
              }
          }
  
          return ret;
      }
  
      private boolean hasAnyAssignedAttribute(org.apache.atlas.v1.model.instance.Referenceable rInstance) {
          boolean ret = false;
  
          Map<String, Object> attributes = rInstance.getValues();
  
          if (MapUtils.isNotEmpty(attributes)) {
              for (Map.Entry<String, Object> attribute : attributes.entrySet()) {
                  if (attribute.getValue() != null) {
                      ret = true;
                      break;
                  }
              }
          }
  
          return ret;
      }
  }
  