[TINKERPOP-2642] Comparability for NaN and nulltype

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.5.1
• Component/s: process
• Labels: breaking
• Assignee: Unassigned
• Reporter: Stephen Mallette
• Created: 04/Nov/21 12:37
• Updated: 12/Jan/22 16:58

Description

• Comparing on NaN should return no results.
• Comparability throws exception today but should return nulltype when comparing incompatible types.
  • When Vertex /Edge/VertexProperty is compared, today it throws but it should return nulltype.
  • When nulltype is compared, today it throws an exception but it should return nulltype

gremlin> g.addV().property('key',-5)
==>v[0]
gremlin> g.addV().property('key',0)
==>v[2]
gremlin> g.addV().property('key',5)
==>v[4]
gremlin> g.addV().property('key',Double.NaN)
==>v[6]
gremlin> g.V().values("key").is(lte(Double.NaN)) // 3.5.x
==>-5
==>0
==>NaN
gremlin> g.V().values("key").is(gte(Double.NaN)) // 3.5.x
==>0
==>5
==>NaN
gremlin> g.V().values("key").is(lt(Double.NaN)) // 3.5.x
==>-5
gremlin> g.V().values("key").is(gt(Double.NaN)) // 3.5.x
==>5
gremlin> g.V().values("key").is(lte(Double.NaN)) // proposed
==>NaN
gremlin> g.V().values("key").is(gte(Double.NaN)) // proposed
==>NaN
gremlin> g.V().values("key").is(lte(Double.NaN)) // proposed
gremlin> g.V().values("key").is(gte(Double.NaN)) // proposed

Issue Links

• relates to: TINKERPOP-2687 Gremlin Boolean Value Expressions 2.0 with Ternary Boolean Logics