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.dataflow.data.common.ILogicalBinaryComparator;
  import org.apache.asterix.dataflow.data.common.TaggedValueReference;
  import org.apache.asterix.om.base.IAObject;
  import org.apache.asterix.om.types.IAType;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  
  public final class LogicalGenericBinaryComparator implements ILogicalBinaryComparator {
  
      private final LogicalComplexBinaryComparator complexComparator;
      private final LogicalScalarBinaryComparator scalarComparator;
  
      LogicalGenericBinaryComparator(IAType leftType, IAType rightType, boolean isEquality) {
          complexComparator = new LogicalComplexBinaryComparator(leftType, rightType, isEquality);
          scalarComparator = LogicalScalarBinaryComparator.of(isEquality);
      }
  
      @Override
      public Result compare(TaggedValueReference left, TaggedValueReference right) throws HyracksDataException {
          if (left.getTag().isDerivedType() && right.getTag().isDerivedType()) {
              return complexComparator.compare(left, right);
          }
          return scalarComparator.compare(left, right);
      }
  
      @Override
      public Result compare(TaggedValueReference left, IAObject rightConstant) {
          if (left.getTag().isDerivedType() && rightConstant.getType().getTypeTag().isDerivedType()) {
              return complexComparator.compare(left, rightConstant);
          }
          return scalarComparator.compare(left, rightConstant);
      }
  
      @Override
      public Result compare(IAObject leftConstant, TaggedValueReference right) {
          Result result = compare(right, leftConstant);
          if (result == Result.LT) {
              return Result.GT;
          } else if (result == Result.GT) {
              return Result.LT;
          }
          return result;
      }
  
      @Override
      public Result compare(IAObject leftConst, IAObject rightConst) {
          if (leftConst.getType().getTypeTag().isDerivedType() && rightConst.getType().getTypeTag().isDerivedType()) {
              return complexComparator.compare(leftConst, rightConst);
          }
          return scalarComparator.compare(leftConst, rightConst);
      }
  }
  