/*
 * 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.iotdb.db.queryengine.transformation.dag.transformer.binary;

import org.apache.iotdb.db.queryengine.transformation.api.LayerReader;
import org.apache.iotdb.db.queryengine.transformation.dag.util.TransformUtils;

import org.apache.tsfile.block.column.Column;

import static org.apache.iotdb.db.queryengine.transformation.dag.util.TypeUtils.castValueToDouble;

public class CompareEqualToTransformer extends CompareBinaryTransformer {
  public CompareEqualToTransformer(LayerReader leftReader, LayerReader rightReader) {
    super(leftReader, rightReader);
  }

  @Override
  protected Evaluator constructNumberEvaluator() {
    return (Column leftValues, int leftIndex, Column rightValues, int rightIndex) ->
        Double.compare(
                castValueToDouble(leftValues, leftReaderDataType, leftIndex),
                castValueToDouble(rightValues, rightReaderDataType, rightIndex))
            == 0;
  }

  @Override
  protected Evaluator constructTextEvaluator() {
    return (Column leftValues, int leftIndex, Column rightValues, int rightIndex) ->
        TransformUtils.compare(leftValues.getBinary(leftIndex), rightValues.getBinary(rightIndex))
            == 0;
  }
}
