DynamicRecord readDynamicRecord() throws IOException {
// id+type+in_use(byte)+nr_of_bytes(int)+next_block(long)
long id = channel.getLong();
assert id >= 0 && id <= (1l << 36) - 1 : id + " is not a valid dynamic record id";
int type = channel.getInt();
byte inUseFlag = channel.get();
boolean inUse = (inUseFlag & Record.IN_USE.byteValue()) != 0;
DynamicRecord record = new DynamicRecord(id);
record.setInUse(inUse, type);
if (inUse) {
record.setStartRecord((inUseFlag & Record.FIRST_IN_CHAIN.byteValue()) != 0);
int nrOfBytes = channel.getInt();
assert nrOfBytes >= 0 && nrOfBytes < ((1 << 24) - 1)
: nrOfBytes + " is not valid for a number of bytes field of " + "a dynamic record";
long nextBlock = channel.getLong();
assert (nextBlock >= 0 && nextBlock <= (1l << 36 - 1))
|| (nextBlock == Record.NO_NEXT_BLOCK.intValue())
: nextBlock + " is not valid for a next record field of " + "a dynamic record";
record.setNextBlock(nextBlock);
byte data[] = new byte[nrOfBytes];
channel.get(data, nrOfBytes);
record.setData(data);
}
return record;
}
private Collection<DynamicRecord> serialize(
SchemaRule rule, long id, boolean inUse, boolean created) {
RecordSerializer serializer = new RecordSerializer();
serializer = serializer.append(rule);
DynamicRecord record = new DynamicRecord(id);
record.setData(serializer.serialize());
if (created) {
record.setCreated();
}
if (inUse) {
record.setInUse(true);
}
return Arrays.asList(record);
}