/**
* If tfs, fields frequencies and blocks are not required, skip that part of the chunk
*
* @throws IOException
*/
protected final void skip() throws IOException {
tfsCodec.skip(input);
if (fieldsCount > 0) {
for (int j = 0; j < fieldsCount; j++) {
fieldsCodec.skip(input);
}
}
if (hasBlocks > 0) {
blocksCodec.skip(input);
}
}
/**
* This load a chunk (just the document ids!) and decompress it
*
* @throws IOException
*/
protected final void load() throws IOException {
chunkSize = (numberOfEntries > chunkSize) ? chunkSize : numberOfEntries;
idsCodec.decompress(input, ids, chunkSize);
Delta.inverseDelta(ids, chunkSize);
currentPosting = -1;
blkCnt = 0;
decompressed = false;
}
/**
* This load the a chunk (tfs, fields and blocks (optionally)) and decompress it
*
* @throws IOException
*/
protected final void decompress() throws IOException {
tfsCodec.decompress(input, tfs, chunkSize);
if (fieldsCount > 0) {
for (int j = 0; j < fieldsCount; j++) {
fieldsCodec.decompress(input, fieldsMatrix[j], chunkSize);
}
}
if (hasBlocks > 0) {
// if (hasBlocks > 1) {
// tfsCodec.decompress(input, bfs, chunkSize);
// }
tfsCodec.decompress(input, bfs, chunkSize);
int numBlocks = 0;
for (int i = 0; i < chunkSize; i++) numBlocks += bfs[i];
blocksMatrix = ArrayUtils.growOrCreate(blocksMatrix, numBlocks);
blocksCodec.decompress(input, blocksMatrix, numBlocks);
}
decompressed = true;
}