private NodBlockReader(final IndexInput in) {
super(in);
// ensure that the output buffers has the minimum size required
nodLenBuffer = ArrayUtils.grow(nodLenBuffer, nodDecompressor.getWindowSize());
nodBuffer = ArrayUtils.grow(nodBuffer, nodDecompressor.getWindowSize());
termFreqBuffer = ArrayUtils.grow(termFreqBuffer, nodDecompressor.getWindowSize());
}
@Override
protected void readHeader() throws IOException {
// logger.debug("Read Nod header: {}", this.hashCode());
// logger.debug("Nod header start at {}", in.getFilePointer());
// read blockSize and check buffer size
nodLenBlockSize = in.readVInt();
// ensure that the output buffer has the minimum size required
final int nodLenBufferLength =
this.getMinimumBufferSize(nodLenBlockSize, nodDecompressor.getWindowSize());
nodLenBuffer = ArrayUtils.grow(nodLenBuffer, nodLenBufferLength);
// logger.debug("Read Nod length block size: {}", nodLenblockSize);
nodBlockSize = in.readVInt();
// ensure that the output buffer has the minimum size required
final int nodBufferLength =
this.getMinimumBufferSize(nodBlockSize, nodDecompressor.getWindowSize());
nodBuffer = ArrayUtils.grow(nodBuffer, nodBufferLength);
// logger.debug("Read Nod block size: {}", nodBlockSize);
termFreqBlockSize = in.readVInt();
// ensure that the output buffer has the minimum size required
final int termFreqBufferLength =
this.getMinimumBufferSize(termFreqBlockSize, nodDecompressor.getWindowSize());
termFreqBuffer = ArrayUtils.grow(termFreqBuffer, termFreqBufferLength);
// logger.debug("Read Term Freq In Node block size: {}", termFreqblockSize);
// read size of each compressed data block and check buffer size
nodLenCompressedBufferLength = in.readVInt();
nodLenCompressedBuffer =
ArrayUtils.grow(nodLenCompressedBuffer, nodLenCompressedBufferLength);
nodLenReadPending = true;
nodCompressedBufferLength = in.readVInt();
nodCompressedBuffer = ArrayUtils.grow(nodCompressedBuffer, nodCompressedBufferLength);
nodReadPending = true;
termFreqCompressedBufferLength = in.readVInt();
termFreqCompressedBuffer =
ArrayUtils.grow(termFreqCompressedBuffer, termFreqCompressedBufferLength);
termFreqReadPending = true;
// decode node lengths
this.decodeNodeLengths();
// copy reference of node buffer
currentNode.ints = nodBuffer.ints;
}