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com.tangosol.io
Class Utf8Writer

java.lang.Object
java.io.Writer
com.tangosol.io.Utf8Writer

All Implemented Interfaces:

Closeable, Flushable, Appendable

public class Utf8Writer

extends Writer

A Utf8Writer is used to write character data onto an underlying stream.

Author:

cp 2002.01.04

Field Summary

Fields inherited from class java.io.Writer

lock

Constructor Summary

Utf8Writer()
Construct a Utf8Writer that buffers the output.

Utf8Writer(OutputStream stream)
Construct a Utf8Writer that puts the output into an OutputStream.

Method Summary

void	close() Close the stream, flushing it first.
void	flush() Flush the stream.
byte[]	toByteArray() If the underlying stream is a ByteArrayOutputStream (such as with the no-parameter constructor), this will return the binary UTF8-encoded data that resulted from the character data written to this Writer.
void	write(char[] ach) Write an array of characters.
void	write(char[] ach, int of, int cch) Write a portion of an array of characters.
void	write(int ch) Write a single character.
void	write(String s) Write a string.
void	write(String s, int of, int cch) Write a portion of a string.

Methods inherited from class java.io.Writer

append, append, append

Constructor Detail

Utf8Writer

public Utf8Writer()

Construct a Utf8Writer that buffers the output.

Utf8Writer

public Utf8Writer(OutputStream stream)

Construct a Utf8Writer that puts the output into an OutputStream.

Parameters:

stream - the underlying stream to write to

Method Detail

write

public void write(int ch)
           throws IOException

Write a single character. The character to be written is contained in the 16 low-order bits of the given integer value; the 16 high-order bits are ignored.

Subclasses that intend to support efficient single-character output should override this method.

Overrides:

write in class Writer

Parameters:

ch - int specifying a character to be written.

Throws:

IOException

write

public void write(char[] ach)
           throws IOException

Write an array of characters.

Overrides:

write in class Writer

Parameters:

ach - array of characters to write

Throws:

IOException

write

public void write(char[] ach,
                  int of,
                  int cch)
           throws IOException

Write a portion of an array of characters.

Specified by:

write in class Writer

Parameters:

ach - array of characters to write from

of - offset from which to start writing characters

cch - number of characters to write

Throws:

IOException

write

public void write(String s)
           throws IOException

Write a string.

Overrides:

write in class Writer

Parameters:

s - the String to write

Throws:

IOException

write

public void write(String s,
                  int of,
                  int cch)
           throws IOException

Write a portion of a string.

Overrides:

write in class Writer

Parameters:

s - the String to write from

of - offset from which to start writing characters

cch - number of characters to write

Throws:

IOException

flush

public void flush()
           throws IOException

Flush the stream. If the stream has saved any characters from the various write() methods in a buffer, write them immediately to their intended destination. Then, if that destination is another character or byte stream, flush it. Thus one flush() invocation will flush all the buffers in a chain of Writers and OutputStreams.

Specified by:

flush in interface Flushable

Specified by:

flush in class Writer

Throws:

IOException - If an I/O error occurs

close

public void close()
           throws IOException

Close the stream, flushing it first. Once a stream has been closed, further write() or flush() invocations will cause an IOException to be thrown. Closing a previously-closed stream, however, has no effect.

Specified by:

close in interface Closeable

Specified by:

close in class Writer

Throws:

IOException - If an I/O error occurs

toByteArray

public byte[] toByteArray()

If the underlying stream is a ByteArrayOutputStream (such as with the no-parameter constructor), this will return the binary UTF8-encoded data that resulted from the character data written to this Writer.

Returns:

a byte array of the UTF8 data

Throws:

ClassCastException - if the underlying stream is not ByteArrayOutputStream

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