Package org.mariadb.jdbc.plugin.codec

Class BigDecimalCodec

java.lang.Object
org.mariadb.jdbc.plugin.codec.BigDecimalCodec
All Implemented Interfaces:
Codec<BigDecimal>
public class BigDecimalCodec extends Object implements Codec<BigDecimal>
Big decimal codec

  • Field Details

    • INSTANCE

      public static final BigDecimalCodec INSTANCE
      default instance

    • MAX_BIG_DECIMAL_STRING_LENGTH

      public static final int MAX_BIG_DECIMAL_STRING_LENGTH
      Maximum length of a numeric string the driver will accept before parsing it into a BigDecimal. Comfortably above any legitimate numeric encoding (MariaDB DECIMAL maxes out at 65 digits, ASCII-formatted doubles fit in ~25 chars), while small enough that the O(n²) cost of new BigDecimal(String) stays sub-millisecond even for an at-cap input. Inputs longer than this are rejected with SQLDataException so attacker-controlled text columns can't be turned into a CPU-exhaustion vector.
      See Also:

  • Constructor Details

    • BigDecimalCodec

      public BigDecimalCodec()

  • Method Details

    • parseBigDecimal

      public static BigDecimal parseBigDecimal(String str) throws SQLDataException
      Parse a numeric string into a BigDecimal, rejecting inputs longer than MAX_BIG_DECIMAL_STRING_LENGTH characters. Use this helper everywhere the driver would otherwise call new BigDecimal(<userControlledString>).
      Parameters:
      str - numeric text
      Returns:
      parsed BigDecimal
      Throws:
      SQLDataException - if str is longer than the cap
      NumberFormatException - if str isn't a valid number (caller may catch and rewrap with column-specific context)

    • className

      public String className()
      Description copied from interface: Codec
      Codec native type
      Specified by:
      className in interface Codec<BigDecimal>
      Returns:
      code native return type

    • canDecode

      public boolean canDecode(org.mariadb.jdbc.client.ColumnDecoder column, Class<?> type)
      Description copied from interface: Codec
      If codec can decode this a server datatype to a java class type
      Specified by:
      canDecode in interface Codec<BigDecimal>
      Parameters:
      column - server datatype
      type - java return class
      Returns:
      true if codec can decode it

    • canEncode

      public boolean canEncode(Object value)
      Description copied from interface: Codec
      Can Codec encode the java object type
      Specified by:
      canEncode in interface Codec<BigDecimal>
      Parameters:
      value - java object type
      Returns:
      true if codec can encode java type

    • decodeText

      public BigDecimal decodeText(org.mariadb.jdbc.client.ReadableByteBuf buf, MutableInt length, org.mariadb.jdbc.client.ColumnDecoder column, Calendar cal, org.mariadb.jdbc.client.Context context) throws SQLDataException
      Description copied from interface: Codec
      Decode from a mysql packet text encoded a value to codec java type
      Specified by:
      decodeText in interface Codec<BigDecimal>
      Parameters:
      buf - mysql packet buffer
      length - encoded value length
      column - server column metadata
      cal - calendar
      context - connection context
      Returns:
      decoded value
      Throws:
      SQLDataException - if unexpected error occurs during decoding

    • decodeBinary

      public BigDecimal decodeBinary(org.mariadb.jdbc.client.ReadableByteBuf buf, MutableInt length, org.mariadb.jdbc.client.ColumnDecoder column, Calendar cal, org.mariadb.jdbc.client.Context context) throws SQLDataException
      Description copied from interface: Codec
      Decode from a mysql packet binary encoded a value to codec java type
      Specified by:
      decodeBinary in interface Codec<BigDecimal>
      Parameters:
      buf - mysql packet buffer
      length - encoded value length
      column - server column metadata
      cal - calendar
      context - connection context
      Returns:
      decoded value
      Throws:
      SQLDataException - if unexpected error occurs during decoding

    • encodeText

      public void encodeText(Writer encoder, org.mariadb.jdbc.client.Context context, BigDecimal value, Calendar cal, Long length) throws IOException
      Description copied from interface: Codec
      Text encode value to writer
      Specified by:
      encodeText in interface Codec<BigDecimal>
      Parameters:
      encoder - writer
      context - connection context
      value - value to encode
      cal - calendar
      length - maximum value length
      Throws:
      IOException - if any socket error occurs

    • getApproximateTextProtocolLength

      public int getApproximateTextProtocolLength(BigDecimal value, Long length)
      Description copied from interface: Codec
      Get approximate text length, or -1 if unknown
      Specified by:
      getApproximateTextProtocolLength in interface Codec<BigDecimal>
      Parameters:
      value - parameter object
      length - max length
      Returns:
      max length if known, -1 if unknown

    • encodeBinary

      public void encodeBinary(Writer encoder, org.mariadb.jdbc.client.Context context, BigDecimal value, Calendar cal, Long maxLength) throws IOException
      Description copied from interface: Codec
      Binary encode value to writer
      Specified by:
      encodeBinary in interface Codec<BigDecimal>
      Parameters:
      encoder - writer
      context - connection context
      value - value to encode
      cal - calendar
      maxLength - maximum value length
      Throws:
      IOException - if any socket error occurs

    • getBinaryEncodeType

      public int getBinaryEncodeType()
      Description copied from interface: Codec
      Return server encoding data type
      Specified by:
      getBinaryEncodeType in interface Codec<BigDecimal>
      Returns:
      server encoding data type