Package org.omnifaces.io

Class ResettableBufferedWriter

java.lang.Object

java.io.Writer

org.omnifaces.io.ResettableBufferedWriter

All Implemented Interfaces:

Closeable, Flushable, Appendable, AutoCloseable, ResettableBuffer

public class ResettableBufferedWriter
extends Writer
implements ResettableBuffer

This resettable buffered writer will buffer everything until the given buffer size, regardless of flush calls. Only when the buffer size is exceeded, or when close is called, then the buffer will be actually flushed.

There is a reset() method which enables the developer to reset the buffer, as long as it's not flushed yet, which can be determined by isResettable().

Author:

Bauke Scholtz

See Also:

ResettableBufferedOutputStream

Field Summary

Fields inherited from class java.io.Writer

lock

Constructor Summary

Constructors

Constructor	Description
ResettableBufferedWriter(Writer writer, int bufferSize, String characterEncoding)	Construct a new resettable buffered writer which wraps the given writer and forcibly buffers everything until the given buffer size in bytes, regardless of flush calls.

Method Summary

Modifier and Type	Method	Description
void	close()
void	flush()
boolean	isResettable()	Returns true if buffer can be reset.
void	reset()	Perform a buffer reset.
void	write(char[] chars, int offset, int length)

Methods inherited from class java.io.Writer

append, append, append, nullWriter, write, write, write, write

Methods inherited from class java.lang.Object

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

Constructor Detail

ResettableBufferedWriter

public ResettableBufferedWriter(Writer writer,
                                int bufferSize,
                                String characterEncoding)

Construct a new resettable buffered writer which wraps the given writer and forcibly buffers everything until the given buffer size in bytes, regardless of flush calls. The given character encoding is used to measure the amount of already written bytes in the buffer. regardless of flush calls.

Parameters:

writer - The wrapped writer.

bufferSize - The buffer size.

characterEncoding - The character encoding.

Method Detail

write

public void write(char[] chars,
                  int offset,
                  int length)
           throws IOException

Specified by:

write in class Writer

Throws:

IOException

reset

public void reset()

Description copied from interface: ResettableBuffer

Perform a buffer reset.

Specified by:

reset in interface ResettableBuffer

flush

public void flush()
           throws IOException

Specified by:

flush in interface Flushable

Specified by:

flush in class Writer

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in class Writer

Throws:

IOException

isResettable

public boolean isResettable()

Description copied from interface: ResettableBuffer

Returns true if buffer can be reset.

Specified by:

isResettable in interface ResettableBuffer

Returns:

true if buffer can be reset, otherwise false.