Examples of com.caucho.db.blob.Inode

com.caucho.db.blob.Inode
Represents the indexes for a BLOB or CLOB. The inode contains 16 long values
```
 0) length of the saved file 1-14) direct fragment addresses (to 224k) 15) pointer to the indirect block 
```
Inline storage (120)
If the length of the blob is less than 120, the blob is stored directly in the inode.
mini fragment storage (3840)
If the length of the blob is less than 3840, the blob is stored in mini-fragments of size 256 pointed by the inode's addresses. The maximum wasted space for mini-fragment storage is 255 bytes.
direct block storage
The first 14 block pointers (224k)
indirect storage
The indirect block (a 16k block) itself is divided into sections:
```
 0-1023) single indirect fragment addresses (16M, 2^24) 1024-1535) double indirect block addresses (16G, 2^34) 1536-2047) triple indirect block addresses (to 8T, 2^43) 
```

  public void writeData()
    throws SQLException
  {
    if (_deleteInodes != null) {
      while (_deleteInodes.size() > 0) {
        Inode inode = _deleteInodes.remove(0);


        // XXX: should be allocating based on auto-commit
        inode.remove();
      }
    }


    ArrayList<Block> updateBlocks = _updateBlocks;
    _updateBlocks = null;

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  {
    if (! isNull(block, rowOffset)) {
      long length = Inode.readLong(block, rowOffset + _columnOffset);


      if (Table.INLINE_BLOB_SIZE <= length) {
        Inode inode = new Inode();
        inode.init(getTable(), xa, block, rowOffset + _columnOffset);
        xa.addDeleteInode(inode);
      }
    }
    
    if (str == null) {

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  {
    if (! isNull(block, rowOffset)) {
      long length = Inode.readLong(block, rowOffset + _columnOffset);


      if (Table.INLINE_BLOB_SIZE <= length) {
        Inode inode = new Inode();
        inode.init(getTable(), xa, block, rowOffset + _columnOffset);
        xa.addDeleteInode(inode);
      }
    }


    if (value == null) {

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      long length = Inode.readLong(block, rowOffset + _columnOffset);


      if (length < Table.INLINE_BLOB_SIZE)
        return;
      
      Inode inode = new Inode();
      inode.init(getTable(), xa, block, rowOffset + _columnOffset);
      xa.addDeleteInode(inode);
    }
  }

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  {
    if (! isNull(block, rowOffset)) {
      long length = Inode.readLong(block, rowOffset + _columnOffset);


      if (Table.INLINE_BLOB_SIZE <= length) {
  Inode inode = new Inode();
  inode.init(getTable(), xa, block, rowOffset + _columnOffset);
  xa.addDeleteInode(inode);
      }
    }
    
    if (str == null) {

View Full Code Here

  {
    if (! isNull(block, rowOffset)) {
      long length = Inode.readLong(block, rowOffset + _columnOffset);


      if (Table.INLINE_BLOB_SIZE <= length) {
  Inode inode = new Inode();
  inode.init(getTable(), xa, block, rowOffset + _columnOffset);
  xa.addDeleteInode(inode);
      }
    }


    if (value == null) {

View Full Code Here

      long length = Inode.readLong(block, rowOffset + _columnOffset);


      if (length < Table.INLINE_BLOB_SIZE)
  return;
      
      Inode inode = new Inode();
      inode.init(getTable(), xa, block, rowOffset + _columnOffset);
      xa.addDeleteInode(inode);
    }
  }

View Full Code Here

  public void writeData()
    throws SQLException
  {
    if (_deleteInodes != null) {
      while (_deleteInodes.size() > 0) {
  Inode inode = _deleteInodes.remove(0);


  // XXX: should be allocating based on auto-commit
  inode.remove();
      }
    }


    ArrayList<Block> updateBlocks = _updateBlocks;
    _updateBlocks = null;

View Full Code Here

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Related Classes of com.caucho.db.blob.Inode

com.caucho.db.block.Block

com.caucho.db.table.BlobColumn

com.caucho.db.xa.DbTransaction

com.caucho.db.xa.Transaction

com.caucho.vfs.TempCharBuffer

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Examples of com.caucho.db.blob.Inode

Inline storage (120)

mini fragment storage (3840)

direct block storage

indirect storage

Related Classes of com.caucho.db.blob.Inode