com.aoindustries.io

Class CompressedDataOutputStream

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

java.io.DataOutputStream

com.aoindustries.io.CompressedDataOutputStream

All Implemented Interfaces:

Closeable, DataOutput, Flushable, AutoCloseable

public class CompressedDataOutputStream
extends DataOutputStream

Adds compressed data transfer to DataOutputStream. This class is not thread safe.

Author:

AO Industries, Inc.

See Also:

CompressedDataInputStream

Field Summary

Fields inherited from class java.io.DataOutputStream

written

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

Constructors

Constructor and Description
CompressedDataOutputStream(OutputStream out)

Method Summary

Modifier and Type	Method and Description
void	writeCompressedInt(int i)
static void	writeCompressedInt(int i, OutputStream out)
void	writeCompressedUTF(String str)
void	writeCompressedUTF(String str, int slot) Writes a String to the stream while using prefix compression.
void	writeLongUTF(String str) Writes a string of any length.
void	writeNullEnum(Enum<?> e)
void	writeNullInteger(Integer i)
void	writeNullLong(Long l)
void	writeNullLongUTF(String str) Writes a string of any length, supporting null.
void	writeNullUTF(String str)

Methods inherited from class java.io.DataOutputStream

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

Methods inherited from class java.io.FilterOutputStream

close, write

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.io.DataOutput

write

Constructor Detail

CompressedDataOutputStream

public CompressedDataOutputStream(OutputStream out)

Method Detail

writeCompressedInt

public static void writeCompressedInt(int i,
                                      OutputStream out)
                               throws IOException

Throws:

IOException

See Also:

CompressedDataInputStream.readCompressedInt()

writeCompressedInt

public void writeCompressedInt(int i)
                        throws IOException

Throws:

IOException

writeCompressedUTF

public void writeCompressedUTF(String str)
                        throws IOException

Throws:

IOException

writeCompressedUTF

public void writeCompressedUTF(String str,
                               int slot)
                        throws IOException

Writes a String to the stream while using prefix compression.

 The first byte has these bits:

 X X X X X X X X
 | | +-+-+-+-+-+ Slot number (0-63)
 | +------------ 1 = Suffix UTF follows, 0 = No suffix UTF exists
 +-------------- 1 = Common length difference follows, 0 = Common length not changed

 Second, if common length difference is not zero, the common length change follows
                 one less for positive differences because 0 is handled in first byte

 Third, if suffix UTF follows, writeUTF of all the string after common length
 

Throws:

IOException

writeNullUTF

public void writeNullUTF(String str)
                  throws IOException

Throws:

IOException

writeLongUTF

public void writeLongUTF(String str)
                  throws IOException

Writes a string of any length.

Throws:

IOException

writeNullLongUTF

public void writeNullLongUTF(String str)
                      throws IOException

Writes a string of any length, supporting null.

Throws:

IOException

writeNullInteger

public void writeNullInteger(Integer i)
                      throws IOException

Throws:

IOException

writeNullEnum

public void writeNullEnum(Enum<?> e)
                   throws IOException

Throws:

IOException

writeNullLong

public void writeNullLong(Long l)
                   throws IOException

Throws:

IOException