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

      long pageIndex = positionEntry.getPageIndex();


      if (diskCache.getFilledUpTo(fileId) <= pageIndex)
        return null;


      ORecordVersion recordVersion = null;
      OCacheEntry cacheEntry = diskCache.load(fileId, pageIndex, false);
      try {
        final OClusterPage localPage = new OClusterPage(cacheEntry, false, ODurablePage.TrackMode.NONE);
        if (localPage.isDeleted(recordPosition))
          return null;

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    final OCacheEntry cacheEntry = diskCache.load(fileId, pageIndex, false);


    cacheEntry.acquireExclusiveLock();
    int recordSizesDiff;
    int position;
    final ORecordVersion finalVersion;
    try {
      final OClusterPage localPage = new OClusterPage(cacheEntry, newRecord, trackMode);
      assert newRecord || freePageIndex == calculateFreePageIndex(localPage);


      int initialFreeSpace = localPage.getFreeSpace();

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    paginatedCluster.truncate();
  }


  public void testDeleteRecordAndAddNewOnItsPlace() throws IOException {
    byte[] smallRecord = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 };
    ORecordVersion recordVersion = OVersionFactory.instance().createVersion();
    recordVersion.increment();
    recordVersion.increment();


    OPhysicalPosition physicalPosition = paginatedCluster.createRecord(smallRecord, recordVersion, (byte) 1);
    Assert.assertEquals(physicalPosition.clusterPosition, OClusterPositionFactory.INSTANCE.valueOf(0));
    paginatedCluster.deleteRecord(physicalPosition.clusterPosition);


    physicalPosition = paginatedCluster.createRecord(smallRecord, recordVersion, (byte) 1);
    Assert.assertEquals(physicalPosition.clusterPosition, OClusterPositionFactory.INSTANCE.valueOf(1));


    recordVersion.increment();
    Assert.assertEquals(physicalPosition.recordVersion, recordVersion);
  }

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    Assert.assertEquals(physicalPosition.recordVersion, recordVersion);
  }


  public void testAddOneSmallRecord() throws IOException {
    byte[] smallRecord = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 };
    ORecordVersion recordVersion = OVersionFactory.instance().createVersion();
    recordVersion.increment();
    recordVersion.increment();


    OPhysicalPosition physicalPosition = paginatedCluster.createRecord(smallRecord, recordVersion, (byte) 1);
    Assert.assertEquals(physicalPosition.clusterPosition, OClusterPositionFactory.INSTANCE.valueOf(0));


    ORawBuffer rawBuffer = paginatedCluster.readRecord(physicalPosition.clusterPosition);

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  public void testAddOneBigRecord() throws IOException {
    byte[] bigRecord = new byte[2 * 65536 + 100];
    MersenneTwisterFast mersenneTwisterFast = new MersenneTwisterFast();
    mersenneTwisterFast.nextBytes(bigRecord);


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


    OPhysicalPosition physicalPosition = paginatedCluster.createRecord(bigRecord, recordVersion, (byte) 1);
    Assert.assertEquals(physicalPosition.clusterPosition, OClusterPositionFactory.INSTANCE.valueOf(0));


    ORawBuffer rawBuffer = paginatedCluster.readRecord(physicalPosition.clusterPosition);

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    MersenneTwisterFast mersenneTwisterFast = new MersenneTwisterFast(seed);
    System.out.println("testAddManySmallRecords seed : " + seed);


    Map<OClusterPosition, byte[]> positionRecordMap = new HashMap<OClusterPosition, byte[]>();


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


    for (int i = 0; i < records; i++) {
      int recordSize = mersenneTwisterFast.nextInt(OClusterPage.MAX_RECORD_SIZE - 1) + 1;
      byte[] smallRecord = new byte[recordSize];
      mersenneTwisterFast.nextBytes(smallRecord);

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    System.out.println("testAddManyBigRecords seed : " + seed);


    Map<OClusterPosition, byte[]> positionRecordMap = new HashMap<OClusterPosition, byte[]>();


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


    for (int i = 0; i < records; i++) {
      int recordSize = mersenneTwisterFast.nextInt(2 * OClusterPage.MAX_RECORD_SIZE) + OClusterPage.MAX_RECORD_SIZE + 1;
      byte[] bigRecord = new byte[recordSize];
      mersenneTwisterFast.nextBytes(bigRecord);

View Full Code Here


    System.out.println("testAddManyRecords seed : " + seed);


    Map<OClusterPosition, byte[]> positionRecordMap = new HashMap<OClusterPosition, byte[]>();


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


    for (int i = 0; i < records; i++) {
      int recordSize = mersenneTwisterFast.nextInt(2 * OClusterPage.MAX_RECORD_SIZE) + 1;
      byte[] smallRecord = new byte[recordSize];
      mersenneTwisterFast.nextBytes(smallRecord);

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    System.out.println("testRemoveHalfSmallRecords seed : " + seed);


    Map<OClusterPosition, byte[]> positionRecordMap = new HashMap<OClusterPosition, byte[]>();


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


    for (int i = 0; i < records; i++) {
      int recordSize = mersenneTwisterFast.nextInt(OClusterPage.MAX_RECORD_SIZE - 1) + 1;
      byte[] smallRecord = new byte[recordSize];
      mersenneTwisterFast.nextBytes(smallRecord);

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    System.out.println("testHideHalfSmallRecords seed : " + seed);


    Map<OClusterPosition, byte[]> positionRecordMap = new HashMap<OClusterPosition, byte[]>();


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


    for (int i = 0; i < records; i++) {
      int recordSize = mersenneTwisterFast.nextInt(OClusterPage.MAX_RECORD_SIZE - 1) + 1;
      byte[] smallRecord = new byte[recordSize];
      mersenneTwisterFast.nextBytes(smallRecord);

View Full Code Here

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