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.carbondata.core.util.comparator;
  
  import org.apache.carbondata.core.metadata.datatype.DataType;
  import org.apache.carbondata.core.metadata.datatype.DataTypes;
  
  public final class Comparator {
  
    //Comparators are made static so that only one instance is generated
    private static final SerializableComparator BOOLEAN  = new BooleanSerializableComparator();
    private static final SerializableComparator INT = new IntSerializableComparator();
    private static final SerializableComparator SHORT = new ShortSerializableComparator();
    private static final SerializableComparator DOUBLE = new DoubleSerializableComparator();
    private static final SerializableComparator FLOAT = new FloatSerializableComparator();
    private static final SerializableComparator LONG = new LongSerializableComparator();
    private static final SerializableComparator DECIMAL  = new BigDecimalSerializableComparator();
    private static final SerializableComparator BYTE = new ByteArraySerializableComparator();
  
    public static SerializableComparator getComparator(DataType dataType) {
      if (dataType == DataTypes.DATE || dataType == DataTypes.TIMESTAMP) {
        return LONG;
      } else if (dataType == DataTypes.STRING) {
        return BYTE;
      } else {
        return getComparatorByDataTypeForMeasure(dataType);
      }
    }
  
    /**
     * create Comparator for Measure Datatype
     *
     * @param dataType
     * @return
     */
    public static SerializableComparator getComparatorByDataTypeForMeasure(DataType dataType) {
      if (dataType == DataTypes.BOOLEAN) {
        return BOOLEAN;
      } else if (dataType == DataTypes.INT) {
        return INT;
      } else if (dataType == DataTypes.SHORT) {
        return SHORT;
      } else if (dataType == DataTypes.LONG) {
        return LONG;
      } else if (dataType == DataTypes.DOUBLE) {
        return DOUBLE;
      } else if (dataType == DataTypes.FLOAT) {
        return FLOAT;
      } else if (DataTypes.isDecimal(dataType)) {
        return DECIMAL;
      } else if (dataType == DataTypes.BYTE) {
        return BYTE;
      } else {
        throw new IllegalArgumentException("Unsupported data type: " + dataType.getName());
      }
    }
  }
  