Interface FitsOutput

All Superinterfaces:

ArrayDataOutput, AutoCloseable, Closeable, DataOutput, FitsIO, OutputWriter

All Known Implementing Classes:

BufferedDataOutputStream, BufferedFile, FitsFile, FitsOutputStream

public interface FitsOutput
extends ArrayDataOutput

Interface for FITS-specific output. It mainly just provides an #isAtStart() method that can be used to determine whether or not we are at the head of the file or stream, in order to decide if an HDU here should be written as primary or as a FITS extension. The decision is made by BasicHDU.write(ArrayDataOutput) and there is no need for any user interaction beyond it.

Since:

1.17

Author:

Attila Kovacs

Field Summary

Fields inherited from interface FitsIO

BITS_OF_1_BYTE, BITS_OF_2_BYTES, BITS_OF_3_BYTES, BITS_OF_4_BYTES, BITS_OF_5_BYTES, BITS_OF_6_BYTES, BITS_OF_7_BYTES, BYTE_1_OF_LONG_MASK, BYTE_2_OF_LONG_MASK, BYTE_3_OF_LONG_MASK, BYTE_4_OF_LONG_MASK, BYTE_MASK, BYTES_IN_BOOLEAN, BYTES_IN_BYTE, BYTES_IN_CHAR, BYTES_IN_DOUBLE, BYTES_IN_FLOAT, BYTES_IN_INTEGER, BYTES_IN_LONG, BYTES_IN_SHORT, DEFAULT_BUFFER_SIZE, HIGH_INTEGER_MASK, INTEGER_MASK, SHORT_MASK, SHORT_OF_LONG_MASK

Modifier and Type	Field	Description
static final int	BITS_OF_1_BYTE	number of bits in one byte.
static final int	BITS_OF_2_BYTES	number of bits in two byte.
static final int	BITS_OF_3_BYTES	number of bits in three byte.
static final int	BITS_OF_4_BYTES	number of bits in four byte.
static final int	BITS_OF_5_BYTES	number of bits in five byte.
static final int	BITS_OF_6_BYTES	number of bits in six byte.
static final int	BITS_OF_7_BYTES	number of bits in seven byte.
static final long	BYTE_1_OF_LONG_MASK	bit mask to get the lowest byte of a long.
static final long	BYTE_2_OF_LONG_MASK	bit mask to get the second lowest byte of a long.
static final long	BYTE_3_OF_LONG_MASK	bit mask to get the third lowest byte of a long.
static final long	BYTE_4_OF_LONG_MASK	bit mask to get the fourth lowest byte of a long.
static final int	BYTE_MASK	bit mask to get the lowest byte from an integer.
static final int	BYTES_IN_BOOLEAN	number of bytes occupied by a boolean.
static final int	BYTES_IN_BYTE	number of bytes occupied by a byte.
static final int	BYTES_IN_CHAR	number of bytes occupied by a char.
static final int	BYTES_IN_DOUBLE	number of bytes occupied by a double.
static final int	BYTES_IN_FLOAT	number of bytes occupied by a float.
static final int	BYTES_IN_INTEGER	number of bytes occupied by a integer.
static final int	BYTES_IN_LONG	number of bytes occupied by a long.
static final int	BYTES_IN_SHORT	number of bytes occupied by a short.
static final int	DEFAULT_BUFFER_SIZE	default buffer size to use unless specified otherwise.
static final long	HIGH_INTEGER_MASK	bit mask to get the highest integer from an long.
static final long	INTEGER_MASK	bit mask to get the lowest integer from an long.
static final int	SHORT_MASK	bit mask to get the lowest short of a integer.
static final long	SHORT_OF_LONG_MASK	bit mask to get the lowest short of a long.

Method Summary

Modifier and Type	Method	Description
boolean	isAtStart()	Checks whether we are currently at the start of this output file or stream.

Methods inherited from interface ArrayDataOutput

flush, write, write, write, write, write, write, write, write, write, write, write, write, write, write, write, write, write, write, writeArray

Modifier and Type	Method	Description
void	flush()	Flush the output buffer
default void	write(boolean[] buf)	Write an array of boolean's.
void	write(boolean[] buf, int offset, int size)	Write a segment of an array of boolean's.
default void	write(char[] buf)	Write an array of char's.
void	write(char[] buf, int offset, int size)	Write a segment of an array of char's.
default void	write(double[] buf)	Write an array of double's.
void	write(double[] buf, int offset, int size)	Write a segment of an array of double's.
default void	write(float[] buf)	Write an array of float's.
void	write(float[] buf, int offset, int size)	Write a segment of an array of float's.
default void	write(int[] buf)	Write an array of int's.
void	write(int[] buf, int offset, int size)	Write a segment of an array of int's.
default void	write(long[] buf)	Write an array of longs.
void	write(long[] buf, int offset, int size)	Write a segment of an array of longs.
default void	write(short[] buf)	Write an array of shorts.
void	write(short[] buf, int offset, int size)	Write a segment of an array of shorts.
default void	write(Boolean[] buf)	Write an array of booleans, including legal null values.
default void	write(Boolean[] buf, int offset, int size)	Write a segment of an array of booleans, possibly including legal null values.
default void	write(String[] buf)	Write an array of Strings.
void	write(String[] buf, int offset, int size)	Write a segment of an array of Strings.
void	writeArray(Object o)	Writes the contents of a Java array to the output translating the data to the required binary representation.

Methods inherited from interface DataOutput

write, write, write, writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeDouble, writeFloat, writeInt, writeLong, writeShort, writeUTF

Methods inherited from interface FitsIO

close

Modifier and Type	Method	Description
void	close()

Methods inherited from interface OutputWriter

write, write

Modifier and Type	Method	Description
void	write(byte[] b, int from, int length)	Writes up to the specified number of bytes from a buffer to the stream.
void	write(int b)	Writes a byte.

Method Details

isAtStart

boolean isAtStart()

Checks whether we are currently at the start of this output file or stream.

Returns:

true if we are currently at the start of stream (where a primary HDU is to be written), or false if we are further along, where HDUs should be written as extensions.

See Also:

• RandomAccess.position()
• OutputEncoder.getCount()