How to use

newRecord

method

in

org.neo4j.kernel.impl.store.RecordStore

public OwningNodeRelationshipChain( RelationshipChainExplorer relationshipChainExplorer,
                  RecordStore<NodeRecord> nodeStore )
{
  this.relationshipChainExplorer = relationshipChainExplorer;
  this.nodeStore = nodeStore;
  this.nodeRecord = nodeStore.newRecord();
}

@Override
public R newRecord()
{
  return actual.newRecord();
}

/**
 * Utility methods for reading records. These are not on the interface itself since it should be
 * an explicit choice when to create the record instances passed into it.
 * Also for mocking purposes it's less confusing and error prone having only a single method.
 */
static <R extends AbstractBaseRecord> R getRecord( RecordStore<R> store, long id, RecordLoad mode )
{
  R record = store.newRecord();
  store.getRecord( id, record, mode );
  return record;
}

@Override
public NodeRecord load( long key, Void additionalData )
{
  return store.getRecord( key, store.newRecord(), NORMAL );
}

@Override
public RelationshipRecord load( long key, Void additionalData )
{
  return store.getRecord( key, store.newRecord(), NORMAL );
}

@Override
public RelationshipGroupRecord load( long key, Integer type )
{
  return store.getRecord( key, store.newRecord(), NORMAL );
}

@Override
public PropertyKeyTokenRecord load( long key, Void additionalData )
{
  return store.getRecord( key, store.newRecord(), NORMAL );
}

@Override
public LabelTokenRecord load( long key, Void additionalData )
{
  return store.getRecord( key, store.newRecord(), NORMAL );
}

@Override
public RelationshipTypeTokenRecord load( long key, Void additionalData )
{
  return store.getRecord( key, store.newRecord(), NORMAL );
}

  private static <T extends AbstractBaseRecord> T[] readAllRecords( Class<T> type, RecordStore<T> store )
  {
    @SuppressWarnings( "unchecked" )
    T[] records = (T[]) Array.newInstance( type, (int) store.getHighId() );
    for ( int i = 0; i < records.length; i++ )
    {
      records[i] = store.getRecord( i, store.newRecord(), FORCE );
    }
    return records;
  }
}

  private static Set<Long> labelsFor( RecordStore<NodeRecord> nodeStore,
                    CheckerEngine<? extends AbstractBaseRecord,? extends ConsistencyReport> engine,
                    RecordAccess recordAccess,
                    long nodeId )
  {
    return getListOfLabels( nodeStore.getRecord( nodeId, nodeStore.newRecord(), FORCE ), recordAccess, engine );
  }
}

Scan( RecordStore<R> store, boolean forward, final Predicate<? super R>... filters )
{
  this.filters = filters;
  this.ids = new StoreIdIterator( store, forward );
  this.store = store;
  this.cursor = store.openPageCursorForReading( 0 );
  this.record = store.newRecord();
}

protected RecordSet<RelationshipRecord> followChainFromNode( long nodeId, long relationshipId )
{
  return expandChain( recordStore.getRecord( relationshipId, recordStore.newRecord(), NORMAL ), nodeId, NEXT );
}

<RECORD extends AbstractBaseRecord> DirectRecordReference<RECORD> referenceTo( RecordStore<RECORD> store, long id )
{
  return new DirectRecordReference<>( store.getRecord( id, store.newRecord(), FORCE ), this );
}

protected R getForce( S store, int id )
{
  return store.getRecord( id, store.newRecord(), RecordLoad.FORCE );
}

  public void warmUpCache()
  {
    int recordsPerPage = store.getRecordsPerPage();
    long id = 0;
    long half = store.getHighId() / 2;
    RECORD record = store.newRecord();
    while ( id < half )
    {
      store.getRecord( id, record, FORCE );
      id += recordsPerPage - 1;
    }
  }
}

protected R getHeavy( S store, int id )
{
  R record = store.getRecord( id, store.newRecord(), NORMAL );
  store.ensureHeavy( record );
  return record;
}

private static void breakTheChain( RecordStore<RelationshipRecord> relationshipStore )
{
  RelationshipRecord record = relationshipStore.getRecord( 10, relationshipStore.newRecord(), NORMAL );
  long relationshipTowardsEndOfChain = record.getFirstNode();
  while ( record.inUse() && !record.isFirstInFirstChain() )
  {
    record = relationshipStore.getRecord( relationshipTowardsEndOfChain, relationshipStore.newRecord(), FORCE );
    relationshipTowardsEndOfChain = record.getFirstPrevRel();
  }
  relationshipStore.updateRecord( new RelationshipRecord( relationshipTowardsEndOfChain, 0, 0, 0 ) );
}

public static <RECORD extends AbstractBaseRecord> int numberOfRecordsInUse( RecordStore<RECORD> store )
{
  int inUse = 0;
  for ( long id = store.getNumberOfReservedLowIds(); id < store.getHighId(); id++ )
  {
    RECORD record = store.getRecord( id, store.newRecord(), RecordLoad.FORCE );
    if ( record.inUse() )
    {
      inUse++;
    }
  }
  return inUse;
}

@Test
public void shouldLoadAllConnectedRelationshipRecordsAndTheirFullChainsOfRelationshipRecords()
{
  // given
  RecordStore<RelationshipRecord> relationshipStore = store.getRelationshipStore();
  // when
  int relationshipIdInMiddleOfChain = 10;
  RecordSet<RelationshipRecord> records = new RelationshipChainExplorer( relationshipStore )
      .exploreRelationshipRecordChainsToDepthTwo(
          relationshipStore.getRecord( relationshipIdInMiddleOfChain, relationshipStore.newRecord(), NORMAL ) );
  // then
  assertEquals( degreeTwoNodes * 2, records.size() );
}