Ejemplo n.º 1
0
  public void writeBytes(int record, ByteSequence bytes, boolean fixedSize) throws IOException {
    synchronized (myLock) {
      final int requiredLength = bytes.getLength();
      final int currentCapacity = myRecordsTable.getCapacity(record);

      final int currentSize = myRecordsTable.getSize(record);
      assert currentSize >= 0;

      if (requiredLength == 0 && currentSize == 0) return;

      final long address;
      if (currentCapacity >= requiredLength) {
        address = myRecordsTable.getAddress(record);
      } else {
        myDataTable.reclaimSpace(currentCapacity);

        int newCapacity =
            fixedSize
                ? requiredLength
                : myCapacityAllocationPolicy.calculateCapacity(requiredLength);
        if (newCapacity < requiredLength) newCapacity = requiredLength;
        address = myDataTable.allocateSpace(newCapacity);
        myRecordsTable.setAddress(record, address);
        myRecordsTable.setCapacity(record, newCapacity);
      }

      myDataTable.writeBytes(address, bytes.getBytes(), bytes.getOffset(), bytes.getLength());
      myRecordsTable.setSize(record, requiredLength);
    }
  }
Ejemplo n.º 2
0
  protected void appendBytes(int record, ByteSequence bytes) throws IOException {
    final int delta = bytes.getLength();
    if (delta == 0) return;

    synchronized (myLock) {
      int capacity = myRecordsTable.getCapacity(record);
      int oldSize = myRecordsTable.getSize(record);
      int newSize = oldSize + delta;
      if (newSize > capacity) {
        if (oldSize > 0) {
          final byte[] newbytes = new byte[newSize];
          System.arraycopy(readBytes(record), 0, newbytes, 0, oldSize);
          System.arraycopy(bytes.getBytes(), bytes.getOffset(), newbytes, oldSize, delta);
          writeBytes(record, new ByteSequence(newbytes), false);
        } else {
          writeBytes(record, bytes, false);
        }
      } else {
        long address = myRecordsTable.getAddress(record) + oldSize;
        myDataTable.writeBytes(address, bytes.getBytes(), bytes.getOffset(), bytes.getLength());
        myRecordsTable.setSize(record, newSize);
      }
    }
  }