Class ByteConverter


  • public class ByteConverter
    extends java.lang.Object
    Helper methods to parse java base types from byte arrays.
    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private ByteConverter()  
    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static boolean bool​(byte[] bytes, int idx)
      Parses a boolean value from the byte array.
      static void bool​(byte[] target, int idx, boolean value)
      Encodes a boolean value to the byte array.
      static int bytesToInt​(byte[] bytes)
      Convert a variable length array of bytes to an integer
      private static void digitToString​(int idx, short[] digits, java.nio.CharBuffer buffer, boolean alwaysPutIt)
      Convert a number from binary representation to text representation.
      static float float4​(byte[] bytes, int idx)
      Parses a float value from the byte array.
      static void float4​(byte[] target, int idx, float value)
      Encodes a int value to the byte array.
      static double float8​(byte[] bytes, int idx)
      Parses a double value from the byte array.
      static void float8​(byte[] target, int idx, double value)
      Encodes a int value to the byte array.
      static short int2​(byte[] bytes, int idx)
      Parses a short value from the byte array.
      static void int2​(byte[] target, int idx, int value)
      Encodes a int value to the byte array.
      static int int4​(byte[] bytes, int idx)
      Parses an int value from the byte array.
      static void int4​(byte[] target, int idx, int value)
      Encodes a int value to the byte array.
      static long int8​(byte[] bytes, int idx)
      Parses a long value from the byte array.
      static void int8​(byte[] target, int idx, long value)
      Encodes a long value to the byte array.
      private static java.lang.String numberBytesToString​(short[] digits, int scale, int weight, int sign)
      Convert a number from binary representation to text representation.
      static java.lang.Number numeric​(byte[] bytes)
      Convert a variable length array of bytes to an integer
      static java.lang.Number numeric​(byte[] bytes, int pos, int numBytes)
      Convert a variable length array of bytes to an integer
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • ByteConverter

        private ByteConverter()
    • Method Detail

      • bytesToInt

        public static int bytesToInt​(byte[] bytes)
        Convert a variable length array of bytes to an integer
        Parameters:
        bytes - array of bytes that can be decoded as an integer
        Returns:
        integer
      • digitToString

        private static void digitToString​(int idx,
                                          short[] digits,
                                          java.nio.CharBuffer buffer,
                                          boolean alwaysPutIt)
        Convert a number from binary representation to text representation.
        Parameters:
        idx - index of the digit to be converted in the digits array
        digits - array of shorts that can be decoded as the number String
        buffer - the character buffer to put the text representation in
        alwaysPutIt - a flag that indicate whether or not to put the digit char even if it is zero
      • numberBytesToString

        private static java.lang.String numberBytesToString​(short[] digits,
                                                            int scale,
                                                            int weight,
                                                            int sign)
        Convert a number from binary representation to text representation.
        Parameters:
        digits - array of shorts that can be decoded as the number String
        scale - the scale of the number binary representation
        weight - the weight of the number binary representation
        sign - the sign of the number
        Returns:
        String the number as String
      • numeric

        public static java.lang.Number numeric​(byte[] bytes)
        Convert a variable length array of bytes to an integer
        Parameters:
        bytes - array of bytes that can be decoded as an integer
        Returns:
        integer
      • numeric

        public static java.lang.Number numeric​(byte[] bytes,
                                               int pos,
                                               int numBytes)
        Convert a variable length array of bytes to an integer
        Parameters:
        bytes - array of bytes that can be decoded as an integer
        pos - index of the start position of the bytes array for number
        numBytes - number of bytes to use, length is already encoded in the binary format but this is used for double checking
        Returns:
        integer
      • int8

        public static long int8​(byte[] bytes,
                                int idx)
        Parses a long value from the byte array.
        Parameters:
        bytes - The byte array to parse.
        idx - The starting index of the parse in the byte array.
        Returns:
        parsed long value.
      • int4

        public static int int4​(byte[] bytes,
                               int idx)
        Parses an int value from the byte array.
        Parameters:
        bytes - The byte array to parse.
        idx - The starting index of the parse in the byte array.
        Returns:
        parsed int value.
      • int2

        public static short int2​(byte[] bytes,
                                 int idx)
        Parses a short value from the byte array.
        Parameters:
        bytes - The byte array to parse.
        idx - The starting index of the parse in the byte array.
        Returns:
        parsed short value.
      • bool

        public static boolean bool​(byte[] bytes,
                                   int idx)
        Parses a boolean value from the byte array.
        Parameters:
        bytes - The byte array to parse.
        idx - The starting index to read from bytes.
        Returns:
        parsed boolean value.
      • float4

        public static float float4​(byte[] bytes,
                                   int idx)
        Parses a float value from the byte array.
        Parameters:
        bytes - The byte array to parse.
        idx - The starting index of the parse in the byte array.
        Returns:
        parsed float value.
      • float8

        public static double float8​(byte[] bytes,
                                    int idx)
        Parses a double value from the byte array.
        Parameters:
        bytes - The byte array to parse.
        idx - The starting index of the parse in the byte array.
        Returns:
        parsed double value.
      • int8

        public static void int8​(byte[] target,
                                int idx,
                                long value)
        Encodes a long value to the byte array.
        Parameters:
        target - The byte array to encode to.
        idx - The starting index in the byte array.
        value - The value to encode.
      • int4

        public static void int4​(byte[] target,
                                int idx,
                                int value)
        Encodes a int value to the byte array.
        Parameters:
        target - The byte array to encode to.
        idx - The starting index in the byte array.
        value - The value to encode.
      • int2

        public static void int2​(byte[] target,
                                int idx,
                                int value)
        Encodes a int value to the byte array.
        Parameters:
        target - The byte array to encode to.
        idx - The starting index in the byte array.
        value - The value to encode.
      • bool

        public static void bool​(byte[] target,
                                int idx,
                                boolean value)
        Encodes a boolean value to the byte array.
        Parameters:
        target - The byte array to encode to.
        idx - The starting index in the byte array.
        value - The value to encode.
      • float4

        public static void float4​(byte[] target,
                                  int idx,
                                  float value)
        Encodes a int value to the byte array.
        Parameters:
        target - The byte array to encode to.
        idx - The starting index in the byte array.
        value - The value to encode.
      • float8

        public static void float8​(byte[] target,
                                  int idx,
                                  double value)
        Encodes a int value to the byte array.
        Parameters:
        target - The byte array to encode to.
        idx - The starting index in the byte array.
        value - The value to encode.