[jira] [Created] (TINKERPOP-2345) NullPointerException when Map key is not found for math()

[Stephen Mallette (Jira)]

Stephen Mallette created TINKERPOP-2345:
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             Summary: NullPointerException when Map key is not found for math()
                 Key: TINKERPOP-2345
                 URL: https://issues.apache.org/jira/browse/TINKERPOP-2345
             Project: TinkerPop
          Issue Type: Bug
          Components: process
    Affects Versions: 3.4.6
            Reporter: Stephen Mallette


We could probably have a nicer error here:

{code}
gremlin> g.V().hasLabel('person').elementMap().as('x').math('x').by('aged')
java.lang.NullPointerException
Type ':help' or ':h' for help.
Display stack trace? [yN]y
java.lang.NullPointerException
        at 
org.apache.tinkerpop.gremlin.process.traversal.step.map.MathStep.map(MathStep.java:73)
        at 
org.apache.tinkerpop.gremlin.process.traversal.step.map.MathStep.map(MathStep.java:47)
        at 
org.apache.tinkerpop.gremlin.process.traversal.step.map.MapStep.processNextStart(MapStep.java:37)
        at 
org.apache.tinkerpop.gremlin.process.traversal.step.map.MathStep.processNextStart(MathStep.java:63)
        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.console.Console$_closure3.doCall(Console.groovy:255)
{code}



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