[TINKERPOP-2620] Clean up NullPointerExceptions related to null arguments on property related steps

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Done
• Affects Version/s: 3.5.1
• Fix Version/s: 3.6.0, 3.5.2
• Component/s: process
• Assignee: Stephen Mallette
• Reporter: Stephen Mallette
• Created: 09/Sep/21 18:38
• Updated: 07/Oct/21 23:12
• Resolved: 07/Oct/21 12:58

Description

Probably needs more examination but here are a few examples:

gremlin> g.V().valueMap('name','age')
==>[name:[marko],age:[29]]
==>[name:[vadas],age:[27]]
==>[name:[lop]]
==>[name:[josh],age:[32]]
==>[name:[ripple]]
==>[name:[peter],age:[35]]
gremlin> g.V().valueMap('name','age',null)
==>[name:[marko],age:[29]]
==>[name:[vadas],age:[27]]
java.lang.NullPointerException
Type ':help' or ':h' for help.
Display stack trace? [yN]n
gremlin> g.V().properties('name','age',null)
==>vp[name->marko]
==>vp[age->29]
==>vp[name->vadas]
==>vp[age->27]
java.lang.NullPointerException
Type ':help' or ':h' for help.
Display stack trace? [yN]n
gremlin> g.V().values('name','age',null)
==>marko
==>29
==>vadas
==>27
java.lang.NullPointerException
Type ':help' or ':h' for help.
Display stack trace? [yN]
gremlin> g.V().elementMap('name','age',null)
==>[id:1,label:person,name:marko,age:29]
==>[id:2,label:person,name:vadas,age:27]
java.lang.NullPointerException
Type ':help' or ':h' for help.
Display stack trace? [yN]