How to use

getRecordSize

method

in

org.neo4j.kernel.impl.store.RecordStore

  private byte[] newRecordBuffer()
  {
    return new byte[schemaStore.getRecordSize() * 4];
  }
}

@Override
public int getRecordSize()
{
  return actual.getRecordSize();
}

  @Override
  protected long position()
  {
    return store.getHighId() * store.getRecordSize();
  }
}

public UpdateRecordsStep( StageControl control, Configuration config, RecordStore<RECORD> store,
    PrepareIdSequence prepareIdSequence )
{
  super( control, "v", config, config.parallelRecordWrites() ? 0 : 1 );
  this.store = store;
  this.prepareIdSequence = prepareIdSequence;
  this.recordSize = store.getRecordSize();
}

  public static RecordStore<DynamicRecord> configureDynamicStore( int blockSize )
  {
    @SuppressWarnings( "unchecked" )
    RecordStore<DynamicRecord> mock = mock( RecordStore.class );
    when( mock.getRecordSize() ).thenReturn( blockSize + DynamicRecordFormat.RECORD_HEADER_SIZE );
    when( mock.getRecordDataSize() ).thenReturn( blockSize );
    return mock;
  }
}

@Override
public Collection<StoreFileMetadata> listStorageFiles()
{
  List<StoreFileMetadata> files = new ArrayList<>();
  for ( StoreType type : StoreType.values() )
  {
    if ( type.equals( StoreType.COUNTS ) )
    {
      addCountStoreFiles( files );
    }
    else
    {
      final RecordStore<AbstractBaseRecord> recordStore = neoStores.getRecordStore( type );
      StoreFileMetadata metadata =
          new StoreFileMetadata( recordStore.getStorageFile(), recordStore.getRecordSize() );
      files.add( metadata );
    }
  }
  return files;
}

@Test
public void ioThroughputStatDoesNotOverflow()
{
  // store with huge record size to force overflow and not create huge batch of records
  RecordStore<NodeRecord> store = mock( RecordStore.class );
  when( store.getRecordSize() ).thenReturn( Integer.MAX_VALUE / 2 );
  Configuration configuration = mock( Configuration.class );
  StageControl stageControl = mock( StageControl.class );
  UpdateRecordsStep<NodeRecord> step = new UpdateRecordsStep<>( stageControl, configuration, store, new StorePrepareIdSequence() );
  NodeRecord record = new NodeRecord( 1 );
  record.setInUse( true );
  NodeRecord[] batch = new NodeRecord[11];
  Arrays.fill( batch, record );
  step.process( batch, mock( BatchSender.class ) );
  Stat stat = step.stat( Keys.io_throughput );
  assertThat( stat.asLong(), greaterThan( 0L ) );
}

  public CountGroupsStage( Configuration config, RecordStore<RelationshipGroupRecord> store,
      RelationshipGroupCache groupCache, StatsProvider... additionalStatsProviders )
  {
    super( NAME, null, config, RECYCLE_BATCHES );
    add( new BatchFeedStep( control(), config, allIn( store, config ), store.getRecordSize() ) );
    add( new ReadRecordsStep<>( control(), config, false, store ) );
    add( new CountGroupsStep( control(), config, groupCache, additionalStatsProviders ) );
  }
}

  public ScanAndCacheGroupsStage( Configuration config, RecordStore<RelationshipGroupRecord> store,
      RelationshipGroupCache cache, StatsProvider... additionalStatsProviders )
  {
    super( NAME, null, config, RECYCLE_BATCHES );
    add( new BatchFeedStep( control(), config, allInReversed( store, config ), store.getRecordSize() ) );
    add( new ReadRecordsStep<>( control(), config, false, store ) );
    add( new CacheGroupsStep( control(), config, cache, additionalStatsProviders ) );
  }
}

  public NodeFirstGroupStage( Configuration config, RecordStore<RelationshipGroupRecord> groupStore,
      NodeStore nodeStore, ByteArray cache )
  {
    super( NAME, null, config, 0 );
    add( new BatchFeedStep( control(), config, allIn( groupStore, config ), groupStore.getRecordSize() ) );
    add( new ReadRecordsStep<>( control(), config, true, groupStore ) );
    add( new NodeSetFirstGroupStep( control(), config, nodeStore, cache ) );
    add( new UpdateRecordsStep<>( control(), config, nodeStore, new StorePrepareIdSequence() ) );
  }
}

  private byte[] newRecordBuffer()
  {
    return new byte[schemaStore.getRecordSize() * 4];
  }
}

@Override
public int getRecordSize()
{
  return actual.getRecordSize();
}

  @Override
  protected long position()
  {
    return store.getHighId() * store.getRecordSize();
  }
}

public UpdateRecordsStep( StageControl control, Configuration config, RecordStore<RECORD> store,
    PrepareIdSequence prepareIdSequence )
{
  super( control, "v", config, config.parallelRecordWrites() ? 0 : 1 );
  this.store = store;
  this.prepareIdSequence = prepareIdSequence;
  this.recordSize = store.getRecordSize();
}

byte[] recData = null;
 int len;
 RecordStore rs = RecordStore.openRecordStore("StoryDataBase1", true);
 if (rs.getNumRecords() > 0) {
 recData = new byte[rs.getRecordSize(1)];
 len = rs.getRecord(1, recData, 0);
 String value = new String(recData, 0, len);
 if(value == null) {
 ....
 } else {
 ...
  }
 }

  public static RecordStore<DynamicRecord> configureDynamicStore( int blockSize )
  {
    @SuppressWarnings( "unchecked" )
    RecordStore<DynamicRecord> mock = mock( RecordStore.class );
    when( mock.getRecordSize() ).thenReturn( blockSize + AbstractDynamicStore.BLOCK_HEADER_SIZE );
    when( mock.getRecordHeaderSize() ).thenReturn( AbstractDynamicStore.BLOCK_HEADER_SIZE );
    return mock;
  }
}

@SuppressWarnings("unchecked")
private StoreAccess storeAccess( long highId, int recordSize )
{
  StoreAccess storeAccess = mock( StoreAccess.class );
  RecordStore recordStore = mock( RecordStore.class );
  when( multiPassStore().getRecordStore( storeAccess ) ).thenReturn( recordStore );
  when( recordStore.getHighId() ).thenReturn( highId );
  when( recordStore.getRecordSize() ).thenReturn( recordSize );
  return storeAccess;
}

  public ScanAndCacheGroupsStage( Configuration config, RecordStore<RelationshipGroupRecord> store,
      RelationshipGroupCache cache, StatsProvider... additionalStatsProviders )
  {
    super( NAME, null, config, RECYCLE_BATCHES );
    add( new BatchFeedStep( control(), config, allInReversed( store, config ), store.getRecordSize() ) );
    add( new ReadRecordsStep<>( control(), config, false, store ) );
    add( new CacheGroupsStep( control(), config, cache, additionalStatsProviders ) );
  }
}

  public CountGroupsStage( Configuration config, RecordStore<RelationshipGroupRecord> store,
      RelationshipGroupCache groupCache, StatsProvider... additionalStatsProviders )
  {
    super( NAME, null, config, RECYCLE_BATCHES );
    add( new BatchFeedStep( control(), config, allIn( store, config ), store.getRecordSize() ) );
    add( new ReadRecordsStep<>( control(), config, false, store ) );
    add( new CountGroupsStep( control(), config, groupCache, additionalStatsProviders ) );
  }
}

  public NodeFirstGroupStage( Configuration config, RecordStore<RelationshipGroupRecord> groupStore,
      NodeStore nodeStore, ByteArray cache )
  {
    super( NAME, null, config, 0 );
    add( new BatchFeedStep( control(), config, allIn( groupStore, config ), groupStore.getRecordSize() ) );
    add( new ReadRecordsStep<>( control(), config, true, groupStore ) );
    add( new NodeSetFirstGroupStep( control(), config, nodeStore, cache ) );
    add( new UpdateRecordsStep<>( control(), config, nodeStore, new StorePrepareIdSequence() ) );
  }
}