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HDFNativeData (h5jan API)












hdf.hdf5lib

Class HDFNativeData

  • java.lang.Object
    • hdf.hdf5lib.HDFNativeData


  • public class HDFNativeData
    extends java.lang.Object
    This class encapsulates native methods to deal with arrays of numbers, converting from numbers to bytes and bytes to numbers.

    These routines are used by class HDFArray to pass data to and from the HDF-5 library.

    Methods xxxToByte() convert a Java array of primitive numbers (int, short, ...) to a Java array of bytes. Methods byteToXxx() convert from a Java array of bytes into a Java array of primitive numbers (int, short, ...)

    Variant interfaces convert a section of an array, and also can convert to sub-classes of Java Number.

    See also: hdf.hdf5lib.HDFArray.

    • Constructor Summary

      Constructors 
      Constructor and Description
      HDFNativeData() 
    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method and Description
      static byte[] byteToByte(byte data)
      Convert a single byte into an array of one byte.
      static byte[] byteToByte(java.lang.Byte data)
      Convert a single Byte object into an array of one byte.
      static double[] byteToDouble(byte[] data)
      Convert an array of bytes into an array of double
      static double byteToDouble(byte[] data, int start)
      Convert 8 bytes from an array of bytes into a single double
      static double[] byteToDouble(int start, int len, byte[] data)
      Convert a range from an array of bytes into an array of double
      static float[] byteToFloat(byte[] data)
      Convert an array of bytes into an array of floats
      static float byteToFloat(byte[] data, int start)
      Convert 4 bytes from an array of bytes into a single float
      static float[] byteToFloat(int start, int len, byte[] data)
      Convert a range from an array of bytes into an array of float
      static int[] byteToInt(byte[] data)
      Convert an array of bytes into an array of ints
      static int byteToInt(byte[] data, int start)
      Convert 4 bytes from an array of bytes into a single int
      static int[] byteToInt(int start, int len, byte[] data)
      Convert a range from an array of bytes into an array of int
      static long[] byteToLong(byte[] data)
      Convert an array of bytes into an array of long
      static long byteToLong(byte[] data, int start)
      Convert 8 bytes from an array of bytes into a single long
      static long[] byteToLong(int start, int len, byte[] data)
      Convert a range from an array of bytes into an array of long
      static java.lang.Object byteToNumber(byte[] barray, java.lang.Object obj)
      Create a Number object from an array of bytes.
      static short[] byteToShort(byte[] data)
      Convert an array of bytes into an array of shorts
      static short byteToShort(byte[] data, int start)
      Convert 2 bytes from an array of bytes into a single short
      static short[] byteToShort(int start, int len, byte[] data)
      Convert a range from an array of bytes into an array of short
      static byte[] doubleToByte(double data)
      Convert a single double into an array of 8 bytes.
      static byte[] doubleToByte(java.lang.Double data)
      Convert a single Double object into an array of 8 bytes.
      static byte[] doubleToByte(int start, int len, double[] data)
      Convert a range from an array of double into an array of bytes.
      static byte[] floatToByte(float data)
      Convert a single float into an array of 4 bytes.
      static byte[] floatToByte(java.lang.Float data)
      Convert a single Float object into an array of 4 bytes.
      static byte[] floatToByte(int start, int len, float[] data)
      Convert a range from an array of float into an array of bytes.
      static byte[] intToByte(int data)
      Convert a single int into an array of 4 bytes.
      static byte[] intToByte(java.lang.Integer data)
      Convert a single Integer object into an array of 4 bytes.
      static byte[] intToByte(int start, int len, int[] data)
      Convert a range from an array of int into an array of bytes.
      static byte[] longToByte(int start, int len, long[] data)
      Convert a range from an array of long into an array of bytes.
      static byte[] longToByte(long data)
      Convert a single long into an array of 8 bytes.
      static byte[] longToByte(java.lang.Long data)
      Convert a single Long object into an array of 8 bytes.
      static byte[] shortToByte(int start, int len, short[] data)
      Convert a range from an array of short into an array of bytes.
      static byte[] shortToByte(short data)
      Convert a single short into an array of 2 bytes.
      static byte[] shortToByte(java.lang.Short data)
      Convert a single Short object into an array of 2 bytes.
      • Methods inherited from class java.lang.Object

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

      • HDFNativeData

        public HDFNativeData()
    • Method Detail

      • byteToInt

        public static int[] byteToInt(byte[] data)
        Convert an array of bytes into an array of ints
        Parameters:
        data - The input array of bytes
        Returns:
        an array of int
      • byteToFloat

        public static float[] byteToFloat(byte[] data)
        Convert an array of bytes into an array of floats
        Parameters:
        data - The input array of bytes
        Returns:
        an array of float
      • byteToShort

        public static short[] byteToShort(byte[] data)
        Convert an array of bytes into an array of shorts
        Parameters:
        data - The input array of bytes
        Returns:
        an array of short
      • byteToLong

        public static long[] byteToLong(byte[] data)
        Convert an array of bytes into an array of long
        Parameters:
        data - The input array of bytes
        Returns:
        an array of long
      • byteToDouble

        public static double[] byteToDouble(byte[] data)
        Convert an array of bytes into an array of double
        Parameters:
        data - The input array of bytes
        Returns:
        an array of double
      • byteToInt

        public static int[] byteToInt(int start,
                                      int len,
                                      byte[] data)
        Convert a range from an array of bytes into an array of int
        Parameters:
        start - The position in the input array of bytes to start
        len - The number of 'int' to convert
        data - The input array of bytes
        Returns:
        an array of 'len' int
      • byteToInt

        public static int byteToInt(byte[] data,
                                    int start)
        Convert 4 bytes from an array of bytes into a single int
        Parameters:
        start - The position in the input array of bytes to start
        data - The input array of bytes
        Returns:
        The integer value of the bytes.
      • byteToShort

        public static short[] byteToShort(int start,
                                          int len,
                                          byte[] data)
        Convert a range from an array of bytes into an array of short
        Parameters:
        start - The position in the input array of bytes to start
        len - The number of 'short' to convert
        data - The input array of bytes
        Returns:
        an array of 'len' short
      • byteToShort

        public static short byteToShort(byte[] data,
                                        int start)
        Convert 2 bytes from an array of bytes into a single short
        Parameters:
        start - The position in the input array of bytes to start
        data - The input array of bytes
        Returns:
        The short value of the bytes.
      • byteToFloat

        public static float[] byteToFloat(int start,
                                          int len,
                                          byte[] data)
        Convert a range from an array of bytes into an array of float
        Parameters:
        start - The position in the input array of bytes to start
        len - The number of 'float' to convert
        data - The input array of bytes
        Returns:
        an array of 'len' float
      • byteToFloat

        public static float byteToFloat(byte[] data,
                                        int start)
        Convert 4 bytes from an array of bytes into a single float
        Parameters:
        start - The position in the input array of bytes to start
        data - The input array of bytes
        Returns:
        The float value of the bytes.
      • byteToLong

        public static long[] byteToLong(int start,
                                        int len,
                                        byte[] data)
        Convert a range from an array of bytes into an array of long
        Parameters:
        start - The position in the input array of bytes to start
        len - The number of 'long' to convert
        data - The input array of bytes
        Returns:
        an array of 'len' long
      • byteToLong

        public static long byteToLong(byte[] data,
                                      int start)
        Convert 8 bytes from an array of bytes into a single long
        Parameters:
        start - The position in the input array of bytes to start
        data - The input array of bytes
        Returns:
        The long value of the bytes.
      • byteToDouble

        public static double[] byteToDouble(int start,
                                            int len,
                                            byte[] data)
        Convert a range from an array of bytes into an array of double
        Parameters:
        start - The position in the input array of bytes to start
        len - The number of 'double' to convert
        data - The input array of bytes
        Returns:
        an array of 'len' double
      • byteToDouble

        public static double byteToDouble(byte[] data,
                                          int start)
        Convert 8 bytes from an array of bytes into a single double
        Parameters:
        start - The position in the input array of bytes to start
        data - The input array of bytes
        Returns:
        The double value of the bytes.
      • intToByte

        public static byte[] intToByte(int start,
                                       int len,
                                       int[] data)
        Convert a range from an array of int into an array of bytes.
        Parameters:
        start - The position in the input array of int to start
        len - The number of 'int' to convert
        data - The input array of int
        Returns:
        an array of bytes
      • shortToByte

        public static byte[] shortToByte(int start,
                                         int len,
                                         short[] data)
        Convert a range from an array of short into an array of bytes.
        Parameters:
        start - The position in the input array of int to start
        len - The number of 'short' to convert
        data - The input array of short
        Returns:
        an array of bytes
      • floatToByte

        public static byte[] floatToByte(int start,
                                         int len,
                                         float[] data)
        Convert a range from an array of float into an array of bytes.
        Parameters:
        start - The position in the input array of int to start
        len - The number of 'float' to convert
        data - The input array of float
        Returns:
        an array of bytes
      • longToByte

        public static byte[] longToByte(int start,
                                        int len,
                                        long[] data)
        Convert a range from an array of long into an array of bytes.
        Parameters:
        start - The position in the input array of int to start
        len - The number of 'long' to convert
        data - The input array of long
        Returns:
        an array of bytes
      • doubleToByte

        public static byte[] doubleToByte(int start,
                                          int len,
                                          double[] data)
        Convert a range from an array of double into an array of bytes.
        Parameters:
        start - The position in the input array of double to start
        len - The number of 'double' to convert
        data - The input array of double
        Returns:
        an array of bytes
      • byteToByte

        public static byte[] byteToByte(byte data)
        Convert a single byte into an array of one byte.

        (This is a trivial method.)

        Parameters:
        data - The input byte
        Returns:
        an array of bytes
      • byteToByte

        public static byte[] byteToByte(java.lang.Byte data)
        Convert a single Byte object into an array of one byte.

        (This is an almost trivial method.)

        Parameters:
        data - The input Byte
        Returns:
        an array of bytes
      • intToByte

        public static byte[] intToByte(int data)
        Convert a single int into an array of 4 bytes.
        Parameters:
        data - The input int
        Returns:
        an array of bytes
      • intToByte

        public static byte[] intToByte(java.lang.Integer data)
        Convert a single Integer object into an array of 4 bytes.
        Parameters:
        data - The input Integer
        Returns:
        an array of bytes
      • shortToByte

        public static byte[] shortToByte(short data)
        Convert a single short into an array of 2 bytes.
        Parameters:
        data - The input short
        Returns:
        an array of bytes
      • shortToByte

        public static byte[] shortToByte(java.lang.Short data)
        Convert a single Short object into an array of 2 bytes.
        Parameters:
        data - The input Short
        Returns:
        an array of bytes
      • floatToByte

        public static byte[] floatToByte(float data)
        Convert a single float into an array of 4 bytes.
        Parameters:
        data - The input float
        Returns:
        an array of bytes
      • floatToByte

        public static byte[] floatToByte(java.lang.Float data)
        Convert a single Float object into an array of 4 bytes.
        Parameters:
        data - The input Float
        Returns:
        an array of bytes
      • longToByte

        public static byte[] longToByte(long data)
        Convert a single long into an array of 8 bytes.
        Parameters:
        data - The input long
        Returns:
        an array of bytes
      • longToByte

        public static byte[] longToByte(java.lang.Long data)
        Convert a single Long object into an array of 8 bytes.
        Parameters:
        data - The input Long
        Returns:
        an array of bytes
      • doubleToByte

        public static byte[] doubleToByte(double data)
        Convert a single double into an array of 8 bytes.
        Parameters:
        data - The input double
        Returns:
        an array of bytes
      • doubleToByte

        public static byte[] doubleToByte(java.lang.Double data)
        Convert a single Double object into an array of 8 bytes.
        Parameters:
        data - The input Double
        Returns:
        an array of bytes
      • byteToNumber

        public static java.lang.Object byteToNumber(byte[] barray,
                                                    java.lang.Object obj)
                                             throws HDF5Exception
        Create a Number object from an array of bytes.
        Parameters:
        barray - The bytes to be converted
        obj - Input object of the desired output class. Must be a sub-class of Number.
        Returns:
        A Object of the type of obj.
        Throws:
        HDF5Exception - - Error unsupported type.




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