public static Decoder getDecoderByType()

in java/tsfile/src/main/java/org/apache/tsfile/encoding/decoder/Decoder.java [49:183]
135 lines of code
64 McCabe index (conditional complexity)

  public static Decoder getDecoderByType(TSEncoding encoding, TSDataType dataType) {
    switch (encoding) {
      case PLAIN:
        return new PlainDecoder();
      case RLE:
        switch (dataType) {
          case BOOLEAN:
          case INT32:
          case DATE:
            return new IntRleDecoder();
          case INT64:
          case VECTOR:
          case TIMESTAMP:
            return new LongRleDecoder();
          case FLOAT:
          case DOUBLE:
            return new FloatDecoder(TSEncoding.valueOf(encoding.toString()), dataType);
          default:
            throw new TsFileDecodingException(String.format(ERROR_MSG, encoding, dataType));
        }
      case TS_2DIFF:
        switch (dataType) {
          case INT32:
          case DATE:
            return new DeltaBinaryDecoder.IntDeltaDecoder();
          case INT64:
          case VECTOR:
          case TIMESTAMP:
            return new DeltaBinaryDecoder.LongDeltaDecoder();
          case FLOAT:
          case DOUBLE:
            return new FloatDecoder(TSEncoding.valueOf(encoding.toString()), dataType);
          default:
            throw new TsFileDecodingException(String.format(ERROR_MSG, encoding, dataType));
        }
      case GORILLA_V1:
        switch (dataType) {
          case FLOAT:
            return new SinglePrecisionDecoderV1();
          case DOUBLE:
            return new DoublePrecisionDecoderV1();
          default:
            throw new TsFileDecodingException(String.format(ERROR_MSG, encoding, dataType));
        }
      case REGULAR:
        switch (dataType) {
          case INT32:
          case DATE:
            return new RegularDataDecoder.IntRegularDecoder();
          case INT64:
          case VECTOR:
          case TIMESTAMP:
            return new RegularDataDecoder.LongRegularDecoder();
          default:
            throw new TsFileDecodingException(String.format(ERROR_MSG, encoding, dataType));
        }
      case GORILLA:
        switch (dataType) {
          case FLOAT:
            return new SinglePrecisionDecoderV2();
          case DOUBLE:
            return new DoublePrecisionDecoderV2();
          case INT32:
          case DATE:
            return new IntGorillaDecoder();
          case INT64:
          case VECTOR:
          case TIMESTAMP:
            return new LongGorillaDecoder();
          default:
            throw new TsFileDecodingException(String.format(ERROR_MSG, encoding, dataType));
        }
      case DICTIONARY:
        return new DictionaryDecoder();
      case ZIGZAG:
        switch (dataType) {
          case INT32:
          case DATE:
            return new IntZigzagDecoder();
          case INT64:
          case TIMESTAMP:
            return new LongZigzagDecoder();
          default:
            throw new TsFileDecodingException(String.format(ERROR_MSG, encoding, dataType));
        }
      case CHIMP:
        switch (dataType) {
          case FLOAT:
            return new SinglePrecisionChimpDecoder();
          case DOUBLE:
            return new DoublePrecisionChimpDecoder();
          case INT32:
          case DATE:
            return new IntChimpDecoder();
          case INT64:
          case VECTOR:
          case TIMESTAMP:
            return new LongChimpDecoder();
          default:
            throw new TsFileDecodingException(String.format(ERROR_MSG, encoding, dataType));
        }
      case SPRINTZ:
        switch (dataType) {
          case INT32:
          case DATE:
            return new IntSprintzDecoder();
          case INT64:
          case TIMESTAMP:
            return new LongSprintzDecoder();
          case FLOAT:
            return new FloatSprintzDecoder();
          case DOUBLE:
            return new DoubleSprintzDecoder();
          default:
            throw new TsFileDecodingException(String.format(ERROR_MSG, encoding, dataType));
        }
      case RLBE:
        switch (dataType) {
          case INT32:
          case DATE:
            return new IntRLBEDecoder();
          case INT64:
          case TIMESTAMP:
            return new LongRLBEDecoder();
          case FLOAT:
            return new FloatRLBEDecoder();
          case DOUBLE:
            return new DoubleRLBEDecoder();
          default:
            throw new TsFileDecodingException(String.format(ERROR_MSG, encoding, dataType));
        }
      default:
        throw new TsFileDecodingException(String.format(ERROR_MSG, encoding, dataType));
    }
  }