org.apache.poi.poifs.storage
Class RawDataBlock

java.lang.Object
  extended by org.apache.poi.poifs.storage.RawDataBlock
All Implemented Interfaces:
ListManagedBlock

public class RawDataBlock
extends java.lang.Object
implements ListManagedBlock

A big block created from an InputStream, holding the raw data

Author:
Marc Johnson (mjohnson at apache dot org

Constructor Summary
RawDataBlock(java.io.InputStream stream)
          Constructor RawDataBlock
RawDataBlock(java.io.InputStream stream, int blockSize)
          Constructor RawDataBlock
 
Method Summary
 boolean eof()
          When we read the data, did we hit end of file?
 int getBigBlockSize()
          What's the big block size?
 byte[] getData()
          Get the data from the block
 boolean hasData()
          Did we actually find any data to read? It's possible, in the event of a short last block, to both have hit the EoF, but also to have data
 java.lang.String toString()
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

RawDataBlock

public RawDataBlock(java.io.InputStream stream)
             throws java.io.IOException
Constructor RawDataBlock

Parameters:
stream - the InputStream from which the data will be read
Throws:
java.io.IOException - on I/O errors, and if an insufficient amount of data is read (the InputStream must be an exact multiple of the block size)

RawDataBlock

public RawDataBlock(java.io.InputStream stream,
                    int blockSize)
             throws java.io.IOException
Constructor RawDataBlock

Parameters:
stream - the InputStream from which the data will be read
blockSize - the size of the POIFS blocks, normally 512 bytes POIFSConstants.SMALLER_BIG_BLOCK_SIZE
Throws:
java.io.IOException - on I/O errors, and if an insufficient amount of data is read (the InputStream must be an exact multiple of the block size)
Method Detail

eof

public boolean eof()
When we read the data, did we hit end of file?

Returns:
true if the EoF was hit during this block, or false if not. If you have a dodgy short last block, then it's possible to both have data, and also hit EoF...

hasData

public boolean hasData()
Did we actually find any data to read? It's possible, in the event of a short last block, to both have hit the EoF, but also to have data


toString

public java.lang.String toString()
Overrides:
toString in class java.lang.Object

getData

public byte[] getData()
               throws java.io.IOException
Get the data from the block

Specified by:
getData in interface ListManagedBlock
Returns:
the block's data as a byte array
Throws:
java.io.IOException - if there is no data

getBigBlockSize

public int getBigBlockSize()
What's the big block size?



Copyright 2012 The Apache Software Foundation or its licensors, as applicable.