org.apache.poi.xssf.streaming

Class GZIPSheetDataWriter

java.lang.Object

org.apache.poi.xssf.streaming.SheetDataWriter

org.apache.poi.xssf.streaming.GZIPSheetDataWriter

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class GZIPSheetDataWriter
extends SheetDataWriter

Sheet writer that supports gzip compression of the temp files.

Constructor Summary

Constructors

Constructor and Description
GZIPSheetDataWriter()
GZIPSheetDataWriter(SharedStringsTable sharedStringsTable)

Method Summary

Modifier and Type	Method and Description
java.io.File	createTempFile() Create a temp file to write sheet data.
protected java.io.InputStream	decorateInputStream(java.io.FileInputStream fis) Override this to translate (such as decrypt or expand) the file input stream as it is being read from disk.
protected java.io.OutputStream	decorateOutputStream(java.io.FileOutputStream fos) Override this to translate (such as encrypt or compress) the file output stream as it is being written to disk.

Methods inherited from class org.apache.poi.xssf.streaming.SheetDataWriter

close, createWriter, finalize, getLastFlushedRow, getLowestIndexOfFlushedRows, getNumberOfCellsOfLastFlushedRow, getNumberOfFlushedRows, getTempFile, getWorksheetXMLInputStream, outputQuotedString, writeCell, writeRow

Methods inherited from class java.lang.Object

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

Constructor Detail

GZIPSheetDataWriter

public GZIPSheetDataWriter()
                    throws java.io.IOException

Throws:

java.io.IOException

GZIPSheetDataWriter

public GZIPSheetDataWriter(SharedStringsTable sharedStringsTable)
                    throws java.io.IOException

Parameters:

sharedStringsTable - the shared strings table, or null if inline text is used

Throws:

java.io.IOException

Method Detail

createTempFile

public java.io.File createTempFile()
                            throws java.io.IOException

Description copied from class: SheetDataWriter

Create a temp file to write sheet data. By default, temp files are created in the default temporary-file directory with a prefix "poi-sxssf-sheet" and suffix ".xml". Subclasses can override it and specify a different temp directory or filename or suffix, e.g. .gz

Overrides:

createTempFile in class SheetDataWriter

Returns:

temp file to write sheet data

Throws:

java.io.IOException

decorateInputStream

protected java.io.InputStream decorateInputStream(java.io.FileInputStream fis)
                                           throws java.io.IOException

Description copied from class: SheetDataWriter

Override this to translate (such as decrypt or expand) the file input stream as it is being read from disk. The default behavior is to to pass the stream through unmodified.

Overrides:

decorateInputStream in class SheetDataWriter

Parameters:

fis - the stream to decorate

Returns:

a decorated stream

Throws:

java.io.IOException - if decorating the stream fails

See Also:

SheetDataWriter.decorateOutputStream(FileOutputStream)

decorateOutputStream

protected java.io.OutputStream decorateOutputStream(java.io.FileOutputStream fos)
                                             throws java.io.IOException

Description copied from class: SheetDataWriter

Override this to translate (such as encrypt or compress) the file output stream as it is being written to disk. The default behavior is to to pass the stream through unmodified.

Overrides:

decorateOutputStream in class SheetDataWriter

Parameters:

fos - the stream to decorate

Returns:

a decorated stream

Throws:

java.io.IOException - if decorating the stream fails

See Also:

SheetDataWriter.decorateInputStream(FileInputStream)