org.apache.poi.poifs.storage: public class: SmallBlockTableWriter

org.apache.poi.poifs.storage
public class: SmallBlockTableWriter [javadoc | source]

java.lang.Object
   org.apache.poi.poifs.storage.SmallBlockTableWriter

All Implemented Interfaces:
BlockWritable, BATManaged

This class implements storage for writing the small blocks used by small documents.

author: Marc - Johnson (mjohnson at apache dot org)

Constructor:

Constructor:
public SmallBlockTableWriter(List documents, RootProperty root) { _sbat = new BlockAllocationTableWriter(); _small_blocks = new ArrayList(); _root = root; Iterator iter = documents.iterator(); while (iter.hasNext()) { POIFSDocument doc = ( POIFSDocument ) iter.next(); BlockWritable[] blocks = doc.getSmallBlocks(); if (blocks.length != 0) { doc.setStartBlock(_sbat.allocateSpace(blocks.length)); for (int j = 0; j < blocks.length; j++) { _small_blocks.add(blocks[ j ]); } } else { doc.setStartBlock(POIFSConstants.END_OF_CHAIN); } } _sbat.simpleCreateBlocks(); _root.setSize(_small_blocks.size()); _big_block_count = SmallDocumentBlock.fill(_small_blocks); } Creates new SmallBlockTable Parameters: `documents` - a List of POIFSDocument instances `root` - the Filesystem's root property

 public SmallBlockTableWriter(List documents,
    RootProperty root) {
        _sbat         = new BlockAllocationTableWriter();
        _small_blocks = new ArrayList();
        _root         = root;
        Iterator iter = documents.iterator();
        while (iter.hasNext())
        {
            POIFSDocument   doc    = ( POIFSDocument ) iter.next();
            BlockWritable[] blocks = doc.getSmallBlocks();
            if (blocks.length != 0)
            {
                doc.setStartBlock(_sbat.allocateSpace(blocks.length));
                for (int j = 0; j <  blocks.length; j++)
                {
                    _small_blocks.add(blocks[ j ]);
                }
            } else {
            	doc.setStartBlock(POIFSConstants.END_OF_CHAIN);
            }
        }
        _sbat.simpleCreateBlocks();
        _root.setSize(_small_blocks.size());
        _big_block_count = SmallDocumentBlock.fill(_small_blocks);
}

Creates new SmallBlockTable

Parameters:

documents - a List of POIFSDocument instances

root - the Filesystem's root property

Method from org.apache.poi.poifs.storage.SmallBlockTableWriter Summary:
countBlocks, getSBAT, getSBATBlockCount, setStartBlock, writeBlocks

Methods from java.lang.Object:
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from org.apache.poi.poifs.storage.SmallBlockTableWriter Detail:
public int countBlocks() { return _big_block_count; } Return the number of BigBlock's this instance uses
public BlockAllocationTableWriter getSBAT() { return _sbat; } Get the SBAT
public int getSBATBlockCount() { return (_big_block_count + 15) / 16; } Get the number of SBAT blocks
public void setStartBlock(int start_block) { _root.setStartBlock(start_block); } Set the start block for this instance
public void writeBlocks(OutputStream stream) throws IOException { Iterator iter = _small_blocks.iterator(); while (iter.hasNext()) { (( BlockWritable ) iter.next()).writeBlocks(stream); } } Write the storage to an OutputStream

Method from org.apache.poi.poifs.storage.SmallBlockTableWriter Detail:

 public int countBlocks() {
        return _big_block_count;
}

Return the number of BigBlock's this instance uses

 public BlockAllocationTableWriter getSBAT() {
        return _sbat;
}

Get the SBAT

 public int getSBATBlockCount() {
	return (_big_block_count + 15) / 16;
}

Get the number of SBAT blocks

 public  void setStartBlock(int start_block) {
        _root.setStartBlock(start_block);
}

Set the start block for this instance

 public  void writeBlocks(OutputStream stream) throws IOException {
        Iterator iter = _small_blocks.iterator();
        while (iter.hasNext())
        {
            (( BlockWritable ) iter.next()).writeBlocks(stream);
        }
}

Write the storage to an OutputStream