How to use

ORecordSaveThreadLocal

in

com.orientechnologies.orient.core.serialization.serializer.record

@Override
public void onStartup() {
 if (INSTANCE == null)
  INSTANCE = new ORecordSaveThreadLocal();
}

public static ORecord getLast() {
 return INSTANCE.get();
}

 public static void removeLast() {
  INSTANCE.set(null);
 }
}

/**
 * Returns a record containing the original in-conflict changes.
 */
private ODocument getChangeRecord(final ORecordId rid, final byte[] content) {
 // check the 'record-save' cache as it's likely already there
 ODocument record = (ODocument) ORecordSaveThreadLocal.getLast();
 if (record == null || !rid.equals(record.getIdentity())) {
  record = new ODocument(rid).fromStream(content);
 }
 return record;
}

@Override
public byte[] onUpdate(OStorage storage, byte iRecordType, final ORecordId rid, final int iRecordVersion,
  final byte[] iRecordContent, final AtomicInteger iDatabaseVersion) {
 if (iRecordType == ODocument.RECORD_TYPE) {
  // No need lock, is already inside a lock. Use database to read temporary objects too
  OStorageOperationResult<ORawBuffer> res = storage.readRecord(rid, null, false, false, null);
  final ODocument storedRecord = new ODocument(rid).fromStream(res.getResult().getBuffer());
  ODocument newRecord = (ODocument) ORecordSaveThreadLocal.getLast();
  if (newRecord == null || !newRecord.getIdentity().equals(rid))
   newRecord = new ODocument(rid).fromStream(iRecordContent);
  storedRecord.merge(newRecord, true, true);
  iDatabaseVersion.set(Math.max(iDatabaseVersion.get(), iRecordVersion) + 1);
  return storedRecord.toStream();
 } else
  // NO DOCUMENT, CANNOT MERGE SO RELY TO THE VERSION CHECK
  checkVersions(rid, iRecordVersion, iDatabaseVersion.get());
 return null;
}

public static void setLast(final ORecord document) {
 INSTANCE.set(document);
}