public SSTableSliceIterator(
SSTableReader ssTable, String key, byte[] startColumn, byte[] finishColumn, boolean reversed)
throws IOException {
this.reversed = reversed;
/* Morph key into actual key based on the partition type. */
DecoratedKey decoratedKey = ssTable.getPartitioner().decorateKey(key);
FileDataInput fdi =
ssTable.getFileDataInput(
decoratedKey, DatabaseDescriptor.getSlicedReadBufferSizeInKB() * 1024);
this.comparator = ssTable.getColumnComparator();
this.startColumn = startColumn;
this.finishColumn = finishColumn;
if (fdi != null) {
// BIGDATA: move up here
DecoratedKey keyInDisk = ssTable.getPartitioner().convertFromDiskFormat(fdi.readUTF());
assert keyInDisk.equals(decoratedKey)
: String.format("%s != %s in %s", keyInDisk, decoratedKey, fdi.getPath());
dataSize = fdi.readInt(); // row data size
dataStart = fdi.getAbsolutePosition();
rowFormat = ColumnFamily.serializer().deserializeRowFormat(fdi);
realDataStart = fdi.getAbsolutePosition();
// !BIGDATA: branch out to the different code process for new rowformat/compression.
if (ColumnFamily.serializer().isNewRowFormat(rowFormat)) {
// new row format
reader = new BigdataColumnGroupReader(ssTable, decoratedKey, fdi);
} else {
// old row format
reader = new ColumnGroupReader(ssTable, decoratedKey, fdi);
}
}
}
