OMVRBTreeRIDSet cannot be cast to OIdentifiable - Traversal and various getVertex call fails

[machinelearner]

Example query via Gremlin

new GremlinPipeline<>().start(groupVertex).in("BelongsTo").has("_id", Contains.IN, memberIds).remove();

Stack Trace: java.lang.ClassCastException: com.orientechnologies.orient.core.type.tree.OMVRBTreeRIDSet cannot be cast to com.orientechnologies.orient.core.db.record.OIdentifiable at com.tinkerpop.blueprints.impls.orient.OrientEdge.getConnection(OrientEdge.java:66) at com.tinkerpop.blueprints.impls.orient.OrientVertex.removeInverseEdge(OrientVertex.java:370) at com.tinkerpop.blueprints.impls.orient.OrientVertex.removeEdges(OrientVertex.java:227) at com.tinkerpop.blueprints.impls.orient.OrientVertex.remove(OrientVertex.java:571) at com.tinkerpop.gremlin.java.GremlinPipeline.remove(GremlinPipeline.java:1608)

Schema for Group, User and Belongs To: ` Create class Subject extends V ABSTRACT ; Create property subject._id STRING ; alter property subject._id NOTNULL true

Create class User extends Subject ; Create property user.name STRING

Create class Group extends Subject ; Create property user.name STRING

Create class BelongsTo extends E ; create property BelongsTo.out LINK Subject ; create property BelongsTo.in LINKSET Group ; alter property BelongsTo.out MANDATORY=true ; alter property BelongsTo.in MANDATORY=true ; create index UniqueBelongsTo on BelongsTo(out,in) unique" `

[lvca]

What release?

[machinelearner]

Sorry forgot to mention.

1.7.6

[lvca]

Reproduced! Working to fix it.

[lvca]

I'm wrong, sorry. I'm not able to reproduce it. Can you write also the steps to create the graph, not only the schema?

[machinelearner]

I've tried to create database and schema in various different ways. using tinkerpop graph graph = new OrientGraph("local:localhost/userNetwork")

console create database 'remote:localhost/userNetwork' root root plocal graph

Both local and remote

I think the cause for this is the use of LINKSET in edge schema. Currently as a workaround i've changed to a less strict schema (LINK) and things dont seem to break

[lvca]

Where did you set LINKSET in schema?

On 16 August 2014 11:46, Pramod N notifications@github.com wrote:

I've tried to create database and schema in various different ways. using tinkerpop graph graph = new OrientGraph("local:localhost/userNetwork")

console create database 'remote:localhost/userNetwork' root root plocal graph

Both local and remote

I think the cause for this is the use of LINKSET in edge schema. Currently as a workaround i've changed to a less strict schema (LINK) and things dont seem to break

— Reply to this email directly or view it on GitHub https://github.com/orientechnologies/orientdb/issues/2682#issuecomment-52388882 .

[machinelearner]

in property of the custom edge create property BelongsTo.in LINKSET Group

[lvca]

OK, so this isn't a bug. EDGE can't be hyperedge.

[machinelearner]

Oohh, damn! so the normalised view(which i called work around) is the actual solution. Cool. Thanks for responding.