org.apache.parquet.bytes

Class LittleEndianDataOutputStream

java.lang.Object

java.io.OutputStream

org.apache.parquet.bytes.LittleEndianDataOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class LittleEndianDataOutputStream
extends OutputStream

Based on DataOutputStream but in little endian and without the String/char methods

Author:

Julien Le Dem

Constructor Summary

Constructors

Constructor and Description
LittleEndianDataOutputStream(OutputStream out) Creates a new data output stream to write data to the specified underlying output stream.

Method Summary

Methods

Modifier and Type	Method and Description
void	flush() Flushes this data output stream.
void	write(byte[] b, int off, int len) Writes len bytes from the specified byte array starting at offset off to the underlying output stream.
void	write(int b) Writes the specified byte (the low eight bits of the argument b) to the underlying output stream.
void	writeBoolean(boolean v) Writes a boolean to the underlying output stream as a 1-byte value.
void	writeByte(int v) Writes out a byte to the underlying output stream as a 1-byte value.
void	writeDouble(double v) Converts the double argument to a long using the doubleToLongBits method in class Double, and then writes that long value to the underlying output stream as an 8-byte quantity, low byte first.
void	writeFloat(float v) Converts the float argument to an int using the floatToIntBits method in class Float, and then writes that int value to the underlying output stream as a 4-byte quantity, low byte first.
void	writeInt(int v) Writes an int to the underlying output stream as four bytes, low byte first.
void	writeLong(long v) Writes a long to the underlying output stream as eight bytes, low byte first.
void	writeShort(int v) Writes a short to the underlying output stream as two bytes, low byte first.

Methods inherited from class java.io.OutputStream

close, write

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LittleEndianDataOutputStream

public LittleEndianDataOutputStream(OutputStream out)

Creates a new data output stream to write data to the specified underlying output stream. The counter written is set to zero.

Parameters:

out - the underlying output stream, to be saved for later use.

See Also:

FilterOutputStream.out

Method Detail

write

public void write(int b)
           throws IOException

Writes the specified byte (the low eight bits of the argument b) to the underlying output stream. If no exception is thrown, the counter written is incremented by 1.

Implements the write method of OutputStream.

Specified by:

write in class OutputStream

Parameters:

b - the byte to be written.

Throws:

IOException - if an I/O error occurs.

See Also:

FilterOutputStream.out

write

public void write(byte[] b,
         int off,
         int len)
           throws IOException

Writes len bytes from the specified byte array starting at offset off to the underlying output stream. If no exception is thrown, the counter written is incremented by len.

Overrides:

write in class OutputStream

Parameters:

b - the data.

off - the start offset in the data.

len - the number of bytes to write.

Throws:

IOException - if an I/O error occurs.

See Also:

FilterOutputStream.out

flush

public void flush()
           throws IOException

Flushes this data output stream. This forces any buffered output bytes to be written out to the stream.

The flush method of DataOutputStream calls the flush method of its underlying output stream.

Specified by:

flush in interface Flushable

Overrides:

flush in class OutputStream

Throws:

IOException - if an I/O error occurs.

See Also:

FilterOutputStream.out, OutputStream.flush()

writeBoolean

public final void writeBoolean(boolean v)
                        throws IOException

Writes a boolean to the underlying output stream as a 1-byte value. The value true is written out as the value (byte)1; the value false is written out as the value (byte)0. If no exception is thrown, the counter written is incremented by 1.

Parameters:

v - a boolean value to be written.

Throws:

IOException - if an I/O error occurs.

See Also:

FilterOutputStream.out

writeByte

public final void writeByte(int v)
                     throws IOException

Writes out a byte to the underlying output stream as a 1-byte value. If no exception is thrown, the counter written is incremented by 1.

Parameters:

v - a byte value to be written.

Throws:

IOException - if an I/O error occurs.

See Also:

FilterOutputStream.out

writeShort

public final void writeShort(int v)
                      throws IOException

Writes a short to the underlying output stream as two bytes, low byte first. If no exception is thrown, the counter written is incremented by 2.

Parameters:

v - a short to be written.

Throws:

IOException - if an I/O error occurs.

See Also:

FilterOutputStream.out

writeInt

public final void writeInt(int v)
                    throws IOException

Writes an int to the underlying output stream as four bytes, low byte first. If no exception is thrown, the counter written is incremented by 4.

Parameters:

v - an int to be written.

Throws:

IOException - if an I/O error occurs.

See Also:

FilterOutputStream.out

writeLong

public final void writeLong(long v)
                     throws IOException

Writes a long to the underlying output stream as eight bytes, low byte first. In no exception is thrown, the counter written is incremented by 8.

Parameters:

v - a long to be written.

Throws:

IOException - if an I/O error occurs.

See Also:

FilterOutputStream.out

writeFloat

public final void writeFloat(float v)
                      throws IOException

Converts the float argument to an int using the floatToIntBits method in class Float, and then writes that int value to the underlying output stream as a 4-byte quantity, low byte first. If no exception is thrown, the counter written is incremented by 4.

Parameters:

v - a float value to be written.

Throws:

IOException - if an I/O error occurs.

See Also:

FilterOutputStream.out, Float.floatToIntBits(float)

writeDouble

public final void writeDouble(double v)
                       throws IOException

Converts the double argument to a long using the doubleToLongBits method in class Double, and then writes that long value to the underlying output stream as an 8-byte quantity, low byte first. If no exception is thrown, the counter written is incremented by 8.

Parameters:

v - a double value to be written.

Throws:

IOException - if an I/O error occurs.

See Also:

FilterOutputStream.out, Double.doubleToLongBits(double)