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.dataflow.data.nontagged.comparators;
  
  import org.apache.asterix.om.typecomputer.impl.TypeComputeUtils;
  import org.apache.asterix.om.types.BuiltinType;
  import org.apache.asterix.om.types.IAType;
  import org.apache.hyracks.api.dataflow.value.IBinaryComparatorFactory;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  import org.apache.hyracks.api.io.IJsonSerializable;
  import org.apache.hyracks.api.io.IPersistedResourceRegistry;
  
  import com.fasterxml.jackson.databind.JsonNode;
  import com.fasterxml.jackson.databind.node.ObjectNode;
  
  abstract class AbstractAGenericBinaryComparatorFactory implements IBinaryComparatorFactory {
  
      private static final long serialVersionUID = 1L;
      final IAType leftType;
      final IAType rightType;
  
      AbstractAGenericBinaryComparatorFactory(IAType leftType, IAType rightType) {
          this.leftType = TypeComputeUtils.getActualType(leftType);
          this.rightType = TypeComputeUtils.getActualType(rightType);
      }
  
      JsonNode convertToJson(IPersistedResourceRegistry registry, Class<? extends IJsonSerializable> clazz, long version)
              throws HyracksDataException {
          ObjectNode jsonNode = registry.getClassIdentifier(clazz, version);
          jsonNode.set("leftType", leftType.toJson(registry));
          jsonNode.set("rightType", rightType.toJson(registry));
          return jsonNode;
      }
  
      static IJsonSerializable convertToObject(IPersistedResourceRegistry registry, JsonNode json, boolean asc)
              throws HyracksDataException {
          JsonNode left = json.get("leftType");
          JsonNode right = json.get("rightType");
          // default to ANY for comparators that didn't originally have the new type fields
          IAType leftType = left == null || left.isNull() ? BuiltinType.ANY : (IAType) registry.deserialize(left);
          IAType rightType = right == null || right.isNull() ? BuiltinType.ANY : (IAType) registry.deserialize(right);
          return asc ? new AGenericAscBinaryComparatorFactory(leftType, rightType)
                  : new AGenericDescBinaryComparatorFactory(leftType, rightType);
      }
  }
  