public static ONodeId generateUniqueId() {
final long clusterPosition = random.nextLong(Long.MAX_VALUE);
final int[] chunks = new int[CHUNKS_SIZE];
final byte[] uuid = new byte[16];
secureRandom.nextBytes(uuid);
chunks[0] = (int) (clusterPosition >>> 32);
chunks[1] = (int) clusterPosition;
chunks[2] = OIntegerSerializer.INSTANCE.deserialize(uuid, 0);
chunks[3] = OIntegerSerializer.INSTANCE.deserialize(uuid, 4);
chunks[4] = OIntegerSerializer.INSTANCE.deserialize(uuid, 8);
chunks[5] = OIntegerSerializer.INSTANCE.deserialize(uuid, 12);
return new ONodeId(chunks, 1);
}
@Override
public int deserialize(byte[] stream, int offset) {
final int contentSize = getSerializedSize(stream, offset);
this.size = OIntegerSerializer.INSTANCE.deserialize(stream, offset);
this.serializedContent = new byte[contentSize];
System.arraycopy(stream, offset, this.serializedContent, 0, contentSize);
deserialized = false;
return offset + contentSize;
}
public static ONodeId fromStream(byte[] content, int start) {
final int[] chunks = new int[CHUNKS_SIZE];
int pos = start;
for (int i = 0; i < CHUNKS_SIZE; i++) {
chunks[i] = OIntegerSerializer.INSTANCE.deserialize(content, pos);
pos += OIntegerSerializer.INT_SIZE;
}
final int signum = content[pos];
return new ONodeId(chunks, signum);
}
private void doDeserialization() {
if (deserialized) return;
int offset = 0;
int entriesSize = OIntegerSerializer.INSTANCE.deserialize(serializedContent, offset);
offset += OIntegerSerializer.INT_SIZE;
for (int i = 0; i < entriesSize; i++) {
ORID rid = OLinkSerializer.INSTANCE.deserialize(serializedContent, offset);
offset += OLinkSerializer.RID_SIZE;
OIdentifiable identifiable;
if (rid.isTemporary()) identifiable = rid.getRecord();
else identifiable = rid;
addEntry(identifiable);
}
deserialized = true;
}
@Override
public int getSerializedSize(byte[] stream, int offset) {
return OIntegerSerializer.INSTANCE.deserialize(stream, offset) * OLinkSerializer.RID_SIZE
+ OIntegerSerializer.INT_SIZE;
}