Package com.illumon.iris.db.v2.parquet

Class BigDecimalParquetBytesCodec

java.lang.Object
com.illumon.iris.db.v2.parquet.BigDecimalParquetBytesCodec
All Implemented Interfaces:
ObjectCodec<BigDecimal>, ObjectDecoder<BigDecimal>
public class BigDecimalParquetBytesCodec
extends Object
implements ObjectCodec<BigDecimal>

  • Constructor Details

    • BigDecimalParquetBytesCodec

      public BigDecimalParquetBytesCodec​(int precision, int scale, int encodedSizeInBytes, RoundingMode roundingMode)
      Parameters:
      precision -
      scale -
      encodedSizeInBytes - encoded size in bytes, if fixed size, or -1 if variable size. note that according to the parquet spec, the minimum number of bytes required to represent the unscaled value should be used for a variable sized (binary) encoding; in any case, the maximum encoded bytes is implicitly limited by precision.

    • BigDecimalParquetBytesCodec

      public BigDecimalParquetBytesCodec​(int precision, int scale, int encodedSizeInBytes)

  • Method Details

    • isNullable

      public boolean isNullable()
      Description copied from interface: ObjectCodec
      Does this codec support encoding of null values?
      Specified by:
      isNullable in interface ObjectCodec<BigDecimal>
      Returns:
      if null values are supported

    • getPrecision

      public int getPrecision()
      Description copied from interface: ObjectCodec
      If applicable, the maximum encodable precision. If precision is not applicable (i.e. for non-numeric types) this method should return zero.
      Specified by:
      getPrecision in interface ObjectCodec<BigDecimal>
      Returns:
      the numeric precision supported by this codec

    • getScale

      public int getScale()
      Description copied from interface: ObjectCodec
      If applicable, the maximum encodable scale. If scale is not applicable (i.e. for non-numeric types) this method should return zero.
      Specified by:
      getScale in interface ObjectCodec<BigDecimal>
      Returns:
      the numeric scale (digits after the decimal point) supported by this codec

    • encode

      @NotNull public byte[] encode​(@Nullable BigDecimal input)
      Description copied from interface: ObjectCodec
      Encode the specified input as an array of bytes. Note that it is up to the implementation how to encode null inputs. The use of a zero-length byte array (e.g. CollectionUtil.ZERO_LENGTH_BYTE_ARRAY) is strongly encouraged.
      Specified by:
      encode in interface ObjectCodec<BigDecimal>
      Parameters:
      input - The input object, possibly null
      Returns:
      The output byte array

    • decode

      @Nullable public BigDecimal decode​(@NotNull byte[] input, int offset, int length)
      Description copied from interface: ObjectDecoder
      Decode an object from an array of bytes.
      Specified by:
      decode in interface ObjectDecoder<BigDecimal>
      Parameters:
      input - The input byte array containing bytes to decode
      offset - The offset into the byte array to start decoding from
      length - The length of the byte array to decode from, starting at the offset
      Returns:
      The output object, possibly null

    • expectedObjectWidth

      public int expectedObjectWidth()
      Description copied from interface: ObjectDecoder
      What width byte array does this ObjectCodec expect to encode and decode?
      Specified by:
      expectedObjectWidth in interface ObjectDecoder<BigDecimal>
      Returns:
      VARIABLE_WIDTH_SENTINEL if the codec must encode and decode variable width columns, otherwise the fixed size of byte array that must be decoded and encoded.