Examples of com.caucho.db.block.Block

com.caucho.db.block.Block
Represents a versioned row

    return Long.toHexString(blockId);
  }


  public void close()
  {
    Block rootBlock = _rootBlock;
    _rootBlock = null;
    
    if (rootBlock != null)
      rootBlock.free();
  }

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  }


  public void init(Transaction xa)
    throws SQLException
  {
    Block block = _block;
    _block = null;
    _buffer = null;


    if (block != null) {
      block.free();
    }
    
    _blockId = 0;
    _rowOffset = Integer.MAX_VALUE / 2;
    _queryContext = null;

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  public boolean nextBlock()
    throws IOException
  {
    byte []buffer = _buffer;


    Block block = _block;
    _block = null;
    _buffer = null;


    if (block != null) {
      block.free();
    }


    _blockId = _table.firstRowBlock(_blockId + Table.BLOCK_SIZE);


    if (_blockId < 0) {
      return false;
    }


    block = _xa.readBlock(_table, _blockId);


    buffer = block.getBuffer();
    _block = block;
    _buffer = buffer;
    _rowOffset = 0;


    return true;

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    long blockId = _table.addressToBlockId(rowAddr);


    if (blockId != _blockId) {
      _blockId = blockId;
    
      Block block = _block;
      _block = null;
      _buffer = null;


      if (block != null) {
  block.free();
      }


      _block = _xa.readBlock(_table, _blockId);
      _buffer = _block.getBuffer();
    }

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   * Sets the next row.
   */
  public void initNullRow()
    throws IOException
  {
    Block block = _block;
    _block = null;
    _buffer = null;


    if (block != null)
      block.free();


    _rowOffset = 0;
    _buffer = _nullBuffer;
  }

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    _block.setDirty(_rowOffset, _rowOffset + _rowLength);
  }


  public void free()
  {
    Block block = _block;
    _block = null;


    if (block != null)
      block.free();
  }

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      KeyCompare keyCompare = column.getIndexKeyCompare();


      if (keyCompare == null)
        continue;


      Block rootBlock = allocateIndexBlock();
      long rootBlockId = rootBlock.getBlockId();
      rootBlock.free();


      BTree btree = new BTree(this, rootBlockId, column.getLength(),
                              keyCompare);


      column.setIndex(btree);

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      if (index == null)
        continue;


      long rootAddr = index.getIndexRoot();


      Block block = readBlock(addressToBlockId(rootAddr));


      try {
        byte []blockBuffer = block.getBuffer();


        synchronized (blockBuffer) {
          for (int j = 0; j < blockBuffer.length; j++) {
            blockBuffer[j] = 0;
          }


          block.setDirty(0, BLOCK_SIZE);
        }
      } finally {
        block.free();
      }
    }


    long blockAddr = 0;

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    throws IOException, SQLException
  {
    if (log.isLoggable(Level.FINEST))
      log.finest("db table " + getName() + " insert row xa:" + xa);


    Block block = null;


    try {
      while (true) {
        long blockId = allocateInsertRowBlock();


        block = xa.loadBlock(this, blockId);


        int rowOffset = allocateRow(block, xa);


        if (rowOffset >= 0) {
          insertRow(queryContext, xa, columns, values,
                    block, rowOffset);


          block.saveAllocation();
          
          freeRowBlockId(blockId);


          return blockIdToAddress(blockId, rowOffset);
        }


        Block freeBlock = block;
        block = null;
        freeBlock.free();
      }
    } finally {
      if (block != null)
        block.free();
    }

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    long rowTailOffset = _rowTailOffset.get();


    blockId = firstRowBlock(rowTailOffset);


    if (blockId <= 0) {
      Block block = allocateRow();


      blockId = block.getBlockId();
      // System.out.println("ALLOC: " + blockId + " " + _rowTailOffset.get() + " " + _rowTailTop);


      block.free();
    }


    _rowTailOffset.compareAndSet(rowTailOffset, blockId + BLOCK_SIZE);
    
    return blockId;

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Related Classes of com.caucho.db.block.Block

com.caucho.db.blob.Inode

com.caucho.db.blob.InodeBlobInputStream

com.caucho.db.index.BTree

com.caucho.db.lock.Lock

com.caucho.db.sql.QueryContext

com.caucho.db.table.Table

com.caucho.db.table.TableIterator

com.caucho.db.xa.DbTransaction

com.caucho.db.xa.Transaction

com.caucho.server.cache.TempFileInode$TempFileOutputStream

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