org.apache.poi.poifs.storage

Class DocumentBlock

java.lang.Object

org.apache.poi.poifs.storage.DocumentBlock

All Implemented Interfaces:

BlockWritable

public final class DocumentBlock
extends java.lang.Object

A block of document data.

Constructor Summary

Constructors

Constructor and Description
DocumentBlock(java.io.InputStream stream, POIFSBigBlockSize bigBlockSize) Create a single instance initialized with data.
DocumentBlock(RawDataBlock block) create a document block from a raw data block

Method Summary

Modifier and Type	Method and Description
static DocumentBlock[]	convert(POIFSBigBlockSize bigBlockSize, byte[] array, int size) convert a single long array into an array of DocumentBlock instances
static DataInputBlock	getDataInputBlock(DocumentBlock[] blocks, int offset)
static byte	getFillByte()
boolean	partiallyRead() Was this a partially read block?
int	size() Get the number of bytes read for this block
void	writeBlocks(java.io.OutputStream stream) Write the storage to an OutputStream

Methods inherited from class java.lang.Object

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

Constructor Detail

DocumentBlock

public DocumentBlock(RawDataBlock block)
              throws java.io.IOException

create a document block from a raw data block

Parameters:

block - the raw data block

Throws:

java.io.IOException

DocumentBlock

public DocumentBlock(java.io.InputStream stream,
                     POIFSBigBlockSize bigBlockSize)
              throws java.io.IOException

Create a single instance initialized with data.

Parameters:

stream - the InputStream delivering the data.

Throws:

java.io.IOException

Method Detail

size

public int size()

Get the number of bytes read for this block

Returns:

bytes read into the block

partiallyRead

public boolean partiallyRead()

Was this a partially read block?

Returns:

true if the block was only partially filled with data

getFillByte

public static byte getFillByte()

Returns:

the fill byte used

convert

public static DocumentBlock[] convert(POIFSBigBlockSize bigBlockSize,
                                      byte[] array,
                                      int size)

convert a single long array into an array of DocumentBlock instances

Parameters:

array - the byte array to be converted

size - the intended size of the array (which may be smaller)

Returns:

an array of DocumentBlock instances, filled from the input array

getDataInputBlock

public static DataInputBlock getDataInputBlock(DocumentBlock[] blocks,
                                               int offset)

writeBlocks

public void writeBlocks(java.io.OutputStream stream)
                 throws java.io.IOException

Write the storage to an OutputStream

Specified by:

writeBlocks in interface BlockWritable

Parameters:

stream - the OutputStream to which the stored data should be written

Throws:

java.io.IOException - on problems writing to the specified stream