Examples of com.orientechnologies.orient.core.version.ORecordVersion

Package com.orientechnologies.orient.core.version

Examples of com.orientechnologies.orient.core.version.ORecordVersion

com.orientechnologies.orient.core.version.ORecordVersion
Abstraction for record version. In non distributed environment it is just a number represented by {@link OSimpleVersion}. In distributed environment records can be processed concurrently, so simple number is not enough, as we need some additional information to prevent generation of two different versions of document with the same version number. This interface provide an ability to create extended versions. @author Artem Orobets @see OSimpleVersion @see ODistributedVersion

    final OPhysicalPosition physicalPosition = new OPhysicalPosition();
    int position = startPosition;
    physicalPosition.clusterPosition = OClusterPositionSerializer.INSTANCE.deserializeNativeObject(stream, position);
    position += OClusterPositionSerializer.INSTANCE.getFixedLength();


    final ORecordVersion version = OVersionFactory.instance().createVersion();
    version.getSerializer().fastReadFrom(stream, position, version);
    position += OVersionFactory.instance().getVersionSize();


    physicalPosition.recordSize = OIntegerSerializer.INSTANCE.deserializeNative(stream, position);
    position += OIntegerSerializer.INT_SIZE;

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    long currentPointer = offset;
    physicalPosition.clusterPosition = OClusterPositionSerializer.INSTANCE.deserializeFromDirectMemoryObject(pointer,
        currentPointer);
    currentPointer += OClusterPositionSerializer.INSTANCE.getFixedLength();


    final ORecordVersion version = OVersionFactory.instance().createVersion();
    byte[] serializedVersion = pointer.get(currentPointer, OVersionFactory.instance().getVersionSize());
    version.getSerializer().fastReadFrom(serializedVersion, 0, version);
    physicalPosition.recordVersion = version;
    currentPointer += OVersionFactory.instance().getVersionSize();


    OIntegerSerializer.INSTANCE.deserializeFromDirectMemory(pointer, currentPointer);
    currentPointer += OIntegerSerializer.INT_SIZE;

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    deleteAllRidBags(document);
    return RESULT.RECORD_CHANGED;
  }


  private void deleteAllRidBags(ODocument document) {
    final ORecordVersion version = document.getRecordVersion();
    if (document.fields() == 0) {
      // FORCE LOADING OF CLASS+FIELDS TO USE IT AFTER ON onRecordAfterDelete METHOD
      document.reload();
      if (version.getCounter() > -1 && document.getRecordVersion().compareTo(version) != 0) // check for record version errors
        if (OFastConcurrentModificationException.enabled())
          throw OFastConcurrentModificationException.instance();
        else
          throw new OConcurrentModificationException(document.getIdentity(), document.getRecordVersion(), version,
              ORecordOperation.DELETED);

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    if (vField != null) {
      versionConfigured = true;
      Object ver = getFieldValue(vField, iPojo);
      if (ver != null) {
        // FOUND
        final ORecordVersion version = iRecord.getRecordVersion();
        if (ver instanceof ORecordVersion) {
          version.copyFrom((ORecordVersion) ver);
        } else if (ver instanceof Number) {
          if (version instanceof OSimpleVersion)
            // TREATS AS CLUSTER POSITION
            version.setCounter(((Number) ver).intValue());
          else
            OLogManager
                .instance()
                .warn(OObjectEntitySerializer.class,
                    "@Version field can't be declared as Number in distributed mode. Should be one of following: String, Object, ORecordVersion");
        } else if (ver instanceof String) {
          version.getSerializer().fromString((String) ver, version);
        } else if (ver.getClass().equals(Object.class))
          version.copyFrom((ORecordVersion) ver);
        else
          OLogManager.instance().warn(OObjectSerializerHelper.class,
              "@Version field has been declared as %s while the supported are: Number, String, Object", ver.getClass());
      }
    }

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    List<ODocument> result = database.query(new OSQLSynchQuery<ODocument>("select from Account"));
    ODocument doc = result.get(0);
    doc.field("name", "modified");
    int oldVersion = doc.getVersion();


    ORecordVersion recordVersion = OVersionFactory.instance().createVersion();
    recordVersion.setCounter(-2);
    doc.getRecordVersion().copyFrom(recordVersion);


    doc.save();


    doc.reload();

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    country = (Country) database.save(country);
    Assert.assertNotNull(country.getId());
    Assert.assertNotNull(country.getVersion());


    ORecordVersion initVersion = ((ORecordVersion) country.getVersion()).copy();


    database.begin();
    Country loaded = (Country) database.load((ORecordId) country.getId());
    Assert.assertEquals(loaded.getId(), country.getId());
    Assert.assertEquals(loaded.getVersion(), country.getVersion());
    Assert.assertEquals(database.getRecordByUserObject(loaded, false), database.getRecordByUserObject(country, false));
    String newName = "ShouldBeChanged";
    loaded.setName(newName);
    loaded = (Country) database.save(loaded);
    database.commit();


    loaded = (Country) database.load((ORecordId) country.getId());
    Assert.assertEquals(database.getRecordByUserObject(loaded, false), database.getRecordByUserObject(country, false));
    Assert.assertEquals(loaded.getId(), country.getId());
    Assert.assertEquals(((ORecordVersion) loaded.getVersion()).getCounter(), initVersion.getCounter() + 1);
    Assert.assertEquals(loaded.getName(), newName);
  }

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    country = (Country) database.save(country);
    Assert.assertNotNull(country.getId());
    Assert.assertNotNull(country.getVersion());


    ORecordVersion initVersion = (ORecordVersion) country.getVersion();


    database.begin();
    Country loaded = (Country) database.load((ORecordId) country.getId());
    Assert.assertEquals(loaded.getId(), country.getId());
    Assert.assertEquals(loaded.getVersion(), country.getVersion());

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  public void onRecordUpdateReplicated(ODocument iDocument) {
  }


  @Override
  public RESULT onRecordBeforeDelete(final ODocument iDocument) {
    final ORecordVersion version = iDocument.getRecordVersion(); // Cache the transaction-provided value
    if (iDocument.fields() == 0) {
      // FORCE LOADING OF CLASS+FIELDS TO USE IT AFTER ON onRecordAfterDelete METHOD
      iDocument.reload();
      if (version.getCounter() > -1 && iDocument.getRecordVersion().compareTo(version) != 0) // check for record version errors
        if (OFastConcurrentModificationException.enabled())
          throw OFastConcurrentModificationException.instance();
        else
          throw new OConcurrentModificationException(iDocument.getIdentity(), iDocument.getRecordVersion(), version,
              ORecordOperation.DELETED);

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           final Map.Entry<ORecordId, OPair<Long, ORecordVersion>> entry = it.next();


           try {
             final ORecordId rid = entry.getKey();
             final long time = entry.getValue().getKey();
             final ORecordVersion version = entry.getValue().getValue();


             if (now - time > (OGlobalConfiguration.DISTRIBUTED_ASYNCH_RESPONSES_TIMEOUT.getValueAsLong() * 2)) {
               // DELETE RECORD
               final OStorageOperationResult<Boolean> result = wrapped.deleteRecord(rid, version, 0, null);
               if (result == null || !result.getResult())

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     return QUORUM_TYPE.WRITE;
   }


   @Override
   public OUpdateRecordTask getFixTask(final ODistributedRequest iRequest, final Object iBadResponse, final Object iGoodResponse) {
     final ORecordVersion versionCopy = version.copy();
     versionCopy.setRollbackMode();


     return new OUpdateRecordTask(rid, null, null, ((OUpdateRecordTask) iRequest.getTask()).content, versionCopy);
   }

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