Examples of org.neo4j.graphdb.RelationshipType

org.neo4j.graphdb.RelationshipType
}
It's very important to note that a relationship type is uniquely identified by its name, not by any particular instance that implements this interface. This means that the proper way to check if two relationship types are equal is by invoking equals() on their {@link #name names}, NOT by using Java's identity operator (==) or equals() on the relationship type instances. A consequence of this is that you can NOT use relationship types in hashed collections such as {@link java.util.HashMap HashMap} and {@link java.util.HashSet HashSet}.
However, you usually want to check whether a specific relationship instance is of a certain type. That is best achieved with the {@link Relationship#isType Relationship.isType} method, such as:
```
if ( rel.isType( MyRelationshipTypes.CONTAINED_IN ) ) { ... } 
```


      // use temporary map to avoid frequent construction of Long values when increasing..
      Map<RelationshipType, LongValueHolder> values = new LinkedHashMap<>();
      for (Relationship r : rels) {


        RelationshipType relType = r.getType();
        LongValueHolder count = values.get(relType);
        if(count == null) {
          count = new LongValueHolder();
          values.put(relType, count);
        }
        count.inc();
      }


      // create results from temporary map
      for(Entry<RelationshipType, LongValueHolder> entry : values.entrySet()) {
        RelationshipType key = entry.getKey();
        LongValueHolder value = entry.getValue();
        statistics.put(key, value.getValue());
      }


    } catch (RuntimeException e) {

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  public <A extends NodeInterface, B extends NodeInterface, S extends Source, T extends Target, R extends Relation<A, B, S, T>> Iterable<R> getRelationships(final Class<R> type) {


    final RelationshipFactory<R> factory = new RelationshipFactory<>(securityContext);
    final R template                     = getRelationshipForType(type);
    final Direction direction            = template.getDirectionForType(entityType);
    final RelationshipType relType       = template;


    return new IterableAdapter<>(dbNode.getRelationships(relType, direction), factory);
  }

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              Node endNode   = uuidMap.get(endId);
              Node startNode = uuidMap.get(startId);


              if (startNode != null && endNode != null) {


                RelationshipType relType = DynamicRelationshipType.withName(relTypeName);
                currentObject = startNode.createRelationshipTo(endNode, relType);


                // store for later use
                rels.add((Relationship)currentObject);
              }

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        .getOrCreateRootNode("secretRootId");


    LOG.debug(String.format("Added %s with grapId: %s to neo4j db",
        rootNode, rootNode.getGraphId()));
    
    RelationshipType referenceNodeRelationship = new RelationshipType() {
      
      @Override
      public String name() {
        return "REFERENCE_NODE";
      }

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        long nextRel = nodeRecord.getNextRel();
        List<BatchRelationship> rels = new ArrayList<BatchRelationship>();
        while ( nextRel != Record.NO_NEXT_RELATIONSHIP.intValue() )
        {
            RelationshipRecord relRecord = getRelationshipRecord( nextRel );
            RelationshipType type = new RelationshipTypeImpl(
                typeHolder.getName( relRecord.getType() ) );
            rels.add( new BatchRelationship( relRecord.getId(),
                relRecord.getFirstNode(), relRecord.getSecondNode(), type ) );
            long firstNode = relRecord.getFirstNode();
            long secondNode = relRecord.getSecondNode();

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        long nextRel = nodeRecord.getNextRel();
        List<SimpleRelationship> rels = new ArrayList<SimpleRelationship>();
        while ( nextRel != Record.NO_NEXT_RELATIONSHIP.intValue() )
        {
            RelationshipRecord relRecord = getRelationshipRecord( nextRel );
            RelationshipType type = new RelationshipTypeImpl(
                    typeHolder.getName( relRecord.getType() ) );
            rels.add( new SimpleRelationship( relRecord.getId(),
                    relRecord.getFirstNode(), relRecord.getSecondNode(), type ) );
            long firstNode = relRecord.getFirstNode();
            long secondNode = relRecord.getSecondNode();

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    @Override
    public BatchRelationship getRelationshipById( long relId )
    {
        RelationshipRecord record = getRelationshipRecord( relId );
        RelationshipType type = new RelationshipTypeImpl(
            typeHolder.getName( record.getType() ) );
        return new BatchRelationship( record.getId(), record.getFirstNode(),
            record.getSecondNode(), type );
    }

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    }


    public SimpleRelationship getSimpleRelationshipById( long relId )
    {
        RelationshipRecord record = getRelationshipRecord( relId );
        RelationshipType type = new RelationshipTypeImpl(
                typeHolder.getName( record.getType() ) );
        return new SimpleRelationship( record.getId(), record.getFirstNode(),
                record.getSecondNode(), type );
    }

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    private  WeightedPath findPaths( Double lat1, Double lon1, Double lat2, Double lon2, Double time )
    {
        Node start = setupStart( lat1, lon1, time );
        Node end = setupEnd( lat2, lon2 );
        RelationshipType lat2lon2 = DynamicRelationshipType.withName( lat2.toString() + lon2.toString() );
        WaitingTimeCostEvaluator eval = new WaitingTimeCostEvaluator(Connection.COST, lat2lon2);
        Dijkstra dijkstra = new Dijkstra( expander, eval, time );
        return dijkstra.findSinglePath( start, end );
    }

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    private  Node setupEnd( Double lat2, Double lon2 )
    {
        Node endNode = db.createNode();
        endNode.setProperty( Hub.LATITUDE, lat2);
        endNode.setProperty( Hub.LONGITUDE, lon2 );  
        RelationshipType lat2lon2 = DynamicRelationshipType.withName( lat2.toString() + lon2.toString() );
        expander = Traversal.expanderForTypes( 
                Type.WALK1, Direction.OUTGOING, 
                Type.HUBBUS1, Direction.OUTGOING, 
                Type.TRANSFER, Direction.OUTGOING,
                Type.WALK2, Direction.OUTGOING,
                lat2lon2, Direction.OUTGOING );   
        
        Set<String> hubSet = new HashSet<String>();
        Map<Node, Double> hits = spatialService.queryWithinDistance( lat2, lon2 );
        int i = 0;
        for ( Entry<Node, Double> entry : hits.entrySet() )     
        {                    
            String hubID = (String) entry.getKey().getProperty( Stop.FROMHUB  );
            if ( !hubSet.contains( hubID ) )
            {
                for(Node endHub : hubLayer2.query( Hub.HUBID, hubID ) )
                {          
                    Relationship walk = endHub.createRelationshipTo( endNode, lat2lon2);
                    double distanceInKm = (entry.getValue() );
                    double distanceInMins = Math.round( 20 * distanceInKm * 1e2 ) / 1e2;
                    walk.setProperty( Connection.COST, distanceInMins*5  );
                    walk.setProperty( Connection.DISTANCE, distanceInKm );
                    walk.setProperty( Stop.STOPID, (String)entry.getKey().getProperty( Stop.STOPID )  );
                    walk.setProperty( Stop.LATITUDE, (Double)entry.getKey().getProperty( Stop.LATITUDE )  );
                    walk.setProperty( Stop.LONGITUDE, (Double)entry.getKey().getProperty( Stop.LONGITUDE )  );
                    RelationshipType routeId = DynamicRelationshipType.withName((String) entry.getKey().getProperty( Stop.ROUTEID  ));
                    expander = expander.add( routeId, Direction.OUTGOING );                   
                    hubSet.add( hubID );   
                    if ( ++i == 50 ) break;
                }

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