Cannot create an edge with a class of which name contains colons (:)

[rhdxmr]

OrientDB Version: docker image of orientdb:3.1-tp3

Java Version:

OS:

Expected behavior

edge is added to vertices successfully

Actual behavior

2021-01-19 13:51:19:614 INFO {db=demodb} created class 'myedge:knows3' as subclass of 'E' [OrientGraph]Exception processing a Traversal on iteration for reque
st [41e3fbb0-ca3b-4bc6-a5df-e9f3e4b5517d].
java.lang.IllegalArgumentException: Invalid field name 'out_myedge:knows3'. Character ':' is invalid
at com.orientechnologies.orient.core.record.impl.ODocument.checkFieldName(ODocument.java:3295)
at com.orientechnologies.orient.core.record.impl.ODocument.field(ODocument.java:1598)
at com.orientechnologies.orient.core.record.impl.OVertexDelegate.createLink(OVertexDelegate.java:574)
at com.orientechnologies.orient.core.db.document.ODatabaseDocumentAbstract.addEdgeInternal(ODatabaseDocumentAbstract.java:1557)
at com.orientechnologies.orient.core.db.document.ODatabaseDocumentAbstract.newEdge(ODatabaseDocumentAbstract.java:1448)
at com.orientechnologies.orient.core.record.impl.OVertexDocument.addEdge(OVertexDocument.java:227)
at org.apache.tinkerpop.gremlin.orientdb.OrientVertex.addEdge(OrientVertex.java:139)
at org.apache.tinkerpop.gremlin.process.traversal.step.map.AddEdgeStep.map(AddEdgeStep.java:109)
at org.apache.tinkerpop.gremlin.process.traversal.step.map.AddEdgeStep.map(AddEdgeStep.java:48)
at org.apache.tinkerpop.gremlin.process.traversal.step.map.MapStep.processNextStart(MapStep.java:37)
at org.apache.tinkerpop.gremlin.process.traversal.step.util.AbstractStep.hasNext(AbstractStep.java:143)
at org.apache.tinkerpop.gremlin.process.traversal.util.DefaultTraversal.hasNext(DefaultTraversal.java:197)
at org.apache.tinkerpop.gremlin.server.util.TraverserIterator.fillBulker(TraverserIterator.java:69)
at org.apache.tinkerpop.gremlin.server.util.TraverserIterator.hasNext(TraverserIterator.java:56)
at org.apache.tinkerpop.gremlin.server.op.traversal.TraversalOpProcessor.handleIterator(TraversalOpProcessor.java:512)
at org.apache.tinkerpop.gremlin.server.op.traversal.TraversalOpProcessor.lambda$iterateBytecodeTraversal$4(TraversalOpProcessor.java:411)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

Steps to reproduce

create class e:knows extends e
=> this suceeds
create edge e:knows from #10:0 to #11:0
=> but this fails

[rhdxmr]

The class with colons can be created successfully. But vertices can not use the class.
I hope that colons are available for a label of an edge.
It is very common to use colons as labels when we deals with RDF.

Is there a workaround for using colon as a label of an edge??

[luigidellaquila]

Hi @rhdxmr

You can use back-tick quotes in this case:

create edge `e:knows` from #10:0 to #11:0

Thanks

Luigi

[rhdxmr]

@luigidellaquila
I used backticks but the sql failed.

[luigidellaquila]

HI @rhdxmr

I think I got the problem: it's not the class name by itself, but the convention on the field names to connect the edges to the vertices.
I think I can fix it, I'll let you know ASAP

Thanks

Luigi