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


      int lastPosition;
      byte counter = 0;
      int freeSpace = localPage.getFreeSpace();


      ORecordVersion recordVersion = OVersionFactory.instance().createVersion();
      recordVersion.increment();


      do {
        lastPosition = localPage.appendRecord(recordVersion, new byte[] { counter, counter, counter }, false);
        if (lastPosition >= 0) {
          Assert.assertEquals(lastPosition, positions.size());

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      int lastPosition;
      byte counter = 0;
      int freeSpace = localPage.getFreeSpace();


      ORecordVersion recordVersion = OVersionFactory.instance().createVersion();
      recordVersion.increment();


      do {
        lastPosition = localPage.appendRecord(recordVersion, new byte[] { counter, counter, counter }, false);
        if (lastPosition >= 0) {
          Assert.assertEquals(lastPosition, positions.size());

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    OCacheEntry cacheEntry = new OCacheEntry(0, 0, cachePointer, false);
    try {
      OClusterPage localPage = new OClusterPage(cacheEntry, true, ODurablePage.TrackMode.FULL);
      Assert.assertEquals(localPage.getRecordsCount(), 0);


      ORecordVersion recordVersion = OVersionFactory.instance().createVersion();
      recordVersion.increment();


      int index = localPage.appendRecord(recordVersion, new byte[] { 1, 2, 3, 4, 5, 6, 5, 4, 3, 2, 1 }, false);
      int freeSpace = localPage.getFreeSpace();


      ORecordVersion newRecordVersion = OVersionFactory.instance().createVersion();
      newRecordVersion.copyFrom(recordVersion);
      newRecordVersion.increment();


      int written = localPage.replaceRecord(index, new byte[] { 5, 2, 3, 4, 5, 11, 5, 4, 3, 2, 1, 3 }, newRecordVersion);
      Assert.assertEquals(localPage.getFreeSpace(), freeSpace);
      Assert.assertEquals(written, 11);

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     if (!isConnectionAlive())
       return;


     final ORID rid = channel.readRID();
     final ORecordVersion version = channel.readVersion();
     final byte mode = channel.readByte();


     final int result = deleteRecord(connection.database, rid, version);


     if (mode < 2) {

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     if (!isConnectionAlive())
       return;


     final ORID rid = channel.readRID();
     final ORecordVersion version = channel.readVersion();
     final byte mode = channel.readByte();


     final int result = cleanOutRecord(connection.database, rid, version);


     if (mode < 2) {

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     final ORecordId rid = channel.readRID();
     boolean updateContent = true;
     if (connection.data.protocolVersion >= 23)
       updateContent = channel.readBoolean();
     final byte[] buffer = channel.readBytes();
     final ORecordVersion version = channel.readVersion();
     final byte recordType = channel.readByte();
     final byte mode = channel.readByte();


     final ORecordVersion newVersion = updateRecord(connection.database, rid, buffer, version, recordType, updateContent);


     if (mode < 2) {
       beginResponse();
       try {
         sendOk(clientTxId);

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      setIntValue(entryIndexPosition, freePosition);


      byte[] serializedVersion = getBinaryValue(entryIndexPosition + OIntegerSerializer.INT_SIZE, OVersionFactory.instance()
          .getVersionSize());


      ORecordVersion existingRecordVersion = OVersionFactory.instance().createVersion();
      existingRecordVersion.getSerializer().fastReadFrom(serializedVersion, 0, existingRecordVersion);


      if (existingRecordVersion.compareTo(recordVersion) < 0) {
        recordVersion.getSerializer().fastWriteTo(serializedVersion, 0, recordVersion);
        setBinaryValue(entryIndexPosition + OIntegerSerializer.INT_SIZE, serializedVersion);
      } else {
        if (!keepTombstoneVersion) {
          existingRecordVersion.increment();
          existingRecordVersion.getSerializer().fastWriteTo(serializedVersion, 0, existingRecordVersion);
          setBinaryValue(entryIndexPosition + OIntegerSerializer.INT_SIZE, serializedVersion);
        }
      }


    } else {

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    if (recordVersion != null) {
      byte[] serializedVersion = getBinaryValue(entryIndexPosition + OIntegerSerializer.INT_SIZE, OVersionFactory.instance()
          .getVersionSize());


      ORecordVersion storedRecordVersion = OVersionFactory.instance().createVersion();
      storedRecordVersion.getSerializer().fastReadFrom(serializedVersion, 0, storedRecordVersion);
      if (recordVersion.compareTo(storedRecordVersion) > 0) {
        recordVersion.getSerializer().fastWriteTo(serializedVersion, 0, recordVersion);
        setBinaryValue(entryIndexPosition + OIntegerSerializer.INT_SIZE, serializedVersion);
      }
    }

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    int entryIndexPosition = PAGE_INDEXES_OFFSET + position * INDEX_ITEM_SIZE;
    byte[] serializedVersion = getBinaryValue(entryIndexPosition + OIntegerSerializer.INT_SIZE, OVersionFactory.instance()
        .getVersionSize());


    ORecordVersion recordVersion = OVersionFactory.instance().createVersion();
    recordVersion.getSerializer().fastReadFrom(serializedVersion, 0, recordVersion);


    return recordVersion;
  }

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


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


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

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