ObjectVertexCrud

Provide basic crud operations for vertex objects: objects annotated with @VertexType or simply extends V in scheme. This mixin mixes Object and Graph apis to let you correctly work with graph vertexes through object api.

It has the same api as ObjectCrud (internally they both extend the same BaseObjectCrud mixin).

Warning

It is important to use this specific version because it uses graph api for remove: if object api directly used, graph consistency is not checked and so edges leading to/from this vertex are not removed.

It also contains special methods for conversion between object and graph api: vertexToObject and objectToVertex.

@VertexType
public class Model {}

@Transactional
@ProvidedBy(DynamicSingletonProvider.class)
public interface ModelRepository extends ObjectVertexCrud<Model> {}

You can use it together with EdgesSupport or EdgeTypeSupport to add relevant edges operations into repository.

For example, suppose we want to always connect Model objects with ModelConnection edge type:

@EdgeType
public class ModelConnection {}

@Transactional
@ProvidedBy(DynamicSingletonProvider.class)
public interface ModelRepository extends ObjectVertexCrud<Model>, 
                       EdgeTypeSupport<ModelConnection, Model, Model> {}

Now we can operate on objects and connect them with the same repository:

@Inject ModelRepository repository;
...
Model from = repository.save(new Model(..));
Model to = repository.save(new Model(..));
ModelConnection edge = repository.createEdge(from, to);

// we may update edge object properties (if it contains it)
edge.setComment("important connection");
repository.updateEdge(edge);