[TINKERPOP-3058] StackOverFlowError when using `or` in Custom Gremlin DSL

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 3.6.4
• Component/s: tinkergraph
• Assignee: Unassigned
• Reporter: Jan
• Created: 16/Feb/24 14:58
• Updated: 19/Feb/24 16:10
• Resolved: 19/Feb/24 16:10

Description

Implementing our own GremlinDSL we encounter a `StackoverFlowError` as soon as we use `or` in the @GremlinDsl interface.

The same condition works fine if defined directly in the query.
It also works as soon as we remove the or from the condition.

@GremlinDsl(traversalSource = "com.corp.foo.gremlin.CustomGraphTraversalSource")
public interface CustomTraversalDsl<S, E> extends GraphTraversal.Admin<S, E> {

    default GraphTraversal<S, Vertex> outWithOr() {
        return out()
            .or(
                has("key"),
                has("key", false)
            );
    }

    default GraphTraversal<S, Vertex> outWithoutOr() {
        return out()
            .has("key")
            .has("key", false);
    }
}

g.V().where(outWithoutOr()).next(); -> works fine 

g.V().where(out().or(has("key"), has("key", false))).next() -> works fine

g.V().where(outWithOr()).next(); -> 

java.lang.StackOverflowError
	at org.apache.tinkerpop.gremlin.process.traversal.util.TraversalHelper.hasStepOfAssignableClass(TraversalHelper.java:349)
	at org.apache.tinkerpop.gremlin.process.traversal.strategy.decoration.ConnectiveStrategy.apply(ConnectiveStrategy.java:63)
	at org.apache.tinkerpop.gremlin.process.traversal.util.TraversalHelper.applyTraversalRecursively(TraversalHelper.java:503)
	at org.apache.tinkerpop.gremlin.process.traversal.util.TraversalHelper.applyTraversalRecursively(TraversalHelper.java:491)