iotdb-core/datanode/src/main/java/org/apache/iotdb/db/utils/EncodingInferenceUtils.java

/*
 * 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.utils;

import org.apache.iotdb.db.conf.IoTDBConfig;
import org.apache.iotdb.db.conf.IoTDBDescriptor;

import org.apache.tsfile.enums.TSDataType;
import org.apache.tsfile.file.metadata.enums.TSEncoding;
import org.apache.tsfile.write.UnSupportedDataTypeException;

public class EncodingInferenceUtils {

  private EncodingInferenceUtils() {
    // util class
  }

  /** Get default encoding by dataType */
  public static TSEncoding getDefaultEncoding(TSDataType dataType) {
    IoTDBConfig conf = IoTDBDescriptor.getInstance().getConfig();
    switch (dataType) {
      case BOOLEAN:
        return conf.getDefaultBooleanEncoding();
      case INT32:
        return conf.getDefaultInt32Encoding();
      case INT64:
        return conf.getDefaultInt64Encoding();
      case FLOAT:
        return conf.getDefaultFloatEncoding();
      case DOUBLE:
        return conf.getDefaultDoubleEncoding();
      case TEXT:
        return conf.getDefaultTextEncoding();
      default:
        throw new UnSupportedDataTypeException(
            String.format("Data type %s is not supported.", dataType));
    }
  }
}