private void newBuffer() {
this.buffer = allocator.allocate(PageFormat.PAGE_HEADER_SIZE + fixedRecordSize);
this.bufferSlice = Slices.wrappedBuffer(buffer.array(), buffer.offset(), buffer.capacity());
this.count = 0;
this.position = PageFormat.PAGE_HEADER_SIZE;
this.stringReferences.clear();
this.stringReferenceSize = 0;
}
public void addRecord() {
// record header
bufferSlice.setInt(
position, nextVariableLengthDataOffset); // nextVariableLengthDataOffset means record size
bufferSlice.setBytes(position + 4, nullBitSet);
count++;
this.position += nextVariableLengthDataOffset;
this.nextVariableLengthDataOffset = fixedRecordSize;
Arrays.fill(nullBitSet, (byte) -1);
// flush if next record will not fit in this buffer
if (buffer.capacity() < position + nextVariableLengthDataOffset + stringReferenceSize) {
flush();
}
}
/* ------------------------------------------------------------ */
public Buffer getBuffer(int size) {
if (_otherHeaders && size == getHeaderSize()) return getHeader();
if (_otherBuffers && size == getBufferSize()) return getBuffer();
// Look for an other buffer
Buffer buffer = _others.poll();
// consume all other buffers until one of the right size is found
while (buffer != null && buffer.capacity() != size) {
_size.decrementAndGet();
buffer = _others.poll();
}
if (buffer == null) buffer = newBuffer(size);
else _size.decrementAndGet();
return buffer;
}
void _reset(Buffer b) {
b.position(0);
b.limit(b.capacity());
}