Package org.pentaho.di.workarounds

Class BufferedOutputStreamWithCloseDetection

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

java.io.BufferedOutputStream

org.pentaho.di.workarounds.BufferedOutputStreamWithCloseDetection

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class BufferedOutputStreamWithCloseDetection
extends BufferedOutputStream

Workaround for stream close issue under Java 8. The problem is: during Workbook writing to stream, Apache POI closes output stream itself. After that, ExcelWriteStep closes this stream also because it was open in the ExcelWriterStep. But Java 8 contains bug https://bugs.openjdk.java.net/browse/JDK-8042377 with second stream closing. As result, second close() throws exception.

Field Summary

Fields inherited from class java.io.BufferedOutputStream

buf, count

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

Constructors

Constructor	Description
BufferedOutputStreamWithCloseDetection(OutputStream out)

Method Summary

Modifier and Type	Method	Description
void	close()	Close only once.
void	flush()	Don't flush empty buffer if already closed.

Methods inherited from class java.io.BufferedOutputStream

write, write

Methods inherited from class java.io.FilterOutputStream

write

Methods inherited from class java.io.OutputStream

nullOutputStream

Methods inherited from class java.lang.Object

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

Constructor Detail

BufferedOutputStreamWithCloseDetection

public BufferedOutputStreamWithCloseDetection(OutputStream out)

Method Detail

flush

public void flush()
           throws IOException

Don't flush empty buffer if already closed.

Specified by:

flush in interface Flushable

Overrides:

flush in class BufferedOutputStream

Throws:

IOException

close

public void close()
           throws IOException

Close only once.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class FilterOutputStream

Throws:

IOException