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 ) ) { ... } 
```

        final RelationshipProperties relationshipProperties = persistentEntity.getRelationshipProperties();
        final Neo4jPersistentProperty startNodeProperty = relationshipProperties.getStartNodeProperty();
        Node startNode = (Node) getPersistentState(startNodeProperty.getValue(entity, startNodeProperty.getMappingPolicy()));
        final Neo4jPersistentProperty endNodeProperty = relationshipProperties.getEndNodeProperty();
        Node endNode = (Node) getPersistentState(endNodeProperty.getValue(entity, endNodeProperty.getMappingPolicy()));
        RelationshipType relationshipType = getRelationshipType(persistentEntity,entity, annotationProvidedRelationshipType );
        if (persistentEntity.isUnique()) {
            final Neo4jPersistentProperty uniqueProperty = persistentEntity.getUniqueProperty();
            final IndexInfo indexInfo = uniqueProperty.getIndexInfo();
            final Object value = uniqueProperty.getValueFromEntity(entity, MappingPolicy.MAP_FIELD_DIRECT_POLICY);
            if (value == null) {
                throw new MappingException("Error creating "+uniqueProperty.getOwner().getName()+" with "+entity+" unique property "+uniqueProperty.getName()+" has null value");
            }
            return (S) graphDatabase.getOrCreateRelationship(indexInfo.getIndexName(),indexInfo.getIndexKey(), value, startNode,endNode,relationshipType.name(), Collections.<String,Object>emptyMap());
        }
        return (S) graphDatabase.createRelationship(startNode, endNode, relationshipType, Collections.<String,Object>emptyMap());
    }

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        getNodeWithName( "2" ).setProperty( "timestamp", 1L );
        getNodeWithName( "3" ).setProperty( "timestamp", 2L );
        tx.success();
        tx.finish();
        
        final RelationshipType type = DynamicRelationshipType.withName( "TO" );
        Traverser t = referenceNode().traverse( Order.DEPTH_FIRST, new StopEvaluator()
        {
            public boolean isStopNode( TraversalPosition position )
            {
                Relationship last = position.lastRelationshipTraversed();

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    public void testRecovery() throws Exception
    {
        final GraphDatabaseService graphDb = newGraphDbService();
        final Index<Node> nodeIndex = graphDb.index().forNodes( "node-index" );
        final Index<Relationship> relIndex = graphDb.index().forRelationships( "rel-index" );
        final RelationshipType relType = DynamicRelationshipType.withName( "recovery" );
        
        graphDb.beginTx();
        Random random = new Random();
        Thread stopper = new Thread()
        {

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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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    }
    
    public SimpleRelationship getRelationshipById( 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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            if ( data == null )
            {
                throw new NotFoundException( "Relationship[" + relId + "]" );
            }
            int typeId = data.relationshipType();
            RelationshipType type = getRelationshipTypeById( typeId );
            if ( type == null )
            {
                throw new NotFoundException( "Relationship[" + data.getId()
                    + "] exist but relationship type[" + typeId
                    + "] not found." );

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            {
                throw new NotFoundException( "Relationship[" + relId
                    + "] not found." );
            }
            int typeId = data.relationshipType();
            RelationshipType type = getRelationshipTypeById( typeId );
            if ( type == null )
            {
                throw new NotFoundException( "Relationship[" + data.getId()
                    + "] exist but relationship type[" + typeId
                    + "] not found." );

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        Map<Long,RelationshipImpl> relsMap = new HashMap<Long,RelationshipImpl>( 150 );
        for ( RelationshipData rel : rels )
        {
            long relId = rel.getId();
            RelationshipImpl relImpl = relCache.get( relId );
            RelationshipType type = null;
            if ( relImpl == null )
            {
                type = getRelationshipTypeById( rel.relationshipType() );
                assert type != null;
                relImpl = new RelationshipImpl( relId, rel.firstNode(), rel.secondNode(), type,
                        false );
                relsMap.put( relId, relImpl );
                // relCache.put( relId, relImpl );
            }
            else
            {
                type = relImpl.getType();
            }
            RelIdArray relationshipSet = newRelationshipMap.get(
                type.name() );
            if ( relationshipSet == null )
            {
                relationshipSet = new RelIdArray();
                newRelationshipMap.put( type.name(), relationshipSet );
            }
            relationshipSet.add( relId );
        }
        // relCache.putAll( relsMap );
        return Pair.of( newRelationshipMap, relsMap );

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    public void testNodeLocalRelationshipIndex()
    {
        RelationshipIndex index = relationshipIndex( "locality",
                LuceneIndexImplementation.EXACT_CONFIG );


        RelationshipType type = DynamicRelationshipType.withName( "YO" );
        Node startNode = graphDb.createNode();
        Node endNode1 = graphDb.createNode();
        Node endNode2 = graphDb.createNode();
        Relationship rel1 = startNode.createRelationshipTo( endNode1, type );
        Relationship rel2 = startNode.createRelationshipTo( endNode2, type );

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            nodeManager, new RelationshipType[0] );
    }


    public Iterable<Relationship> getRelationships( NodeManager nodeManager, RelationshipType type )
    {
        RelationshipType types[] = new RelationshipType[] { type };
        return new IntArrayIterator( getAllRelationshipsOfType( nodeManager, types ),
            this, Direction.BOTH, nodeManager, types );
    }

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