org.eclipse.emf.emfstore.internal.common.model.util

Class ChecksumCalculatorWriter

java.lang.Object

java.io.Writer

org.eclipse.emf.emfstore.internal.common.model.util.ChecksumCalculatorWriter

All Implemented Interfaces:

Closeable, Flushable, Appendable, AutoCloseable

public class ChecksumCalculatorWriter
extends Writer

Calculates the checksum of all bytes streamed by directely computing it during the write operation. This will save memory, as we do not need multiple versions of a model string.

Author:

Marco van Meegen

Constructor Summary

Constructors

Constructor and Description
ChecksumCalculatorWriter()

Method Summary

Modifier and Type	Method and Description
void	close()
void	flush()
long	getChecksum()
void	write(char[] cbuf, int off, int len) update checksum with bytes written.

Methods inherited from class java.io.Writer

append, append, append, write, write, write, write

Methods inherited from class java.lang.Object

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

Constructor Detail

ChecksumCalculatorWriter

public ChecksumCalculatorWriter()

Method Detail

write

public void write(char[] cbuf,
                  int off,
                  int len)
           throws IOException

update checksum with bytes written.

Specified by:

write in class Writer

Throws:

IOException

See Also:

Writer.write(char[], int, int)

flush

public void flush()
           throws IOException

Specified by:

flush in interface Flushable

Specified by:

flush in class Writer

Throws:

IOException

See Also:

Writer.flush()

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Specified by:

close in class Writer

Throws:

IOException

See Also:

Writer.close()

getChecksum

public long getChecksum()

Returns:

the checksum calculated for all characters written to the writer