[GROOVY-3509] GPath inconsistency

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.6.2
• Fix Version/s: 1.6.3, 1.7-beta-1
• Assignee: Guillaume Sauthier
• Reporter: Guillaume Sauthier
• Created: 07/May/09 14:40
• Updated: 07/May/09 17:41
• Resolved: 07/May/09 17:41

Description

The issue was created out of the following discussion from the Groovy dev mailing-list:
http://www.nabble.com/Inconsistency-in-GPath-td23427805.html

The following code fails with an NPE:

def data = [
    [a: null],
    [a: [b: 1]],
    [a: [b: 2]]
]

assert data.a.b.sum() == 3

On a DOM that would have been parsed out of some XML feed, the result would have been 3, as expected, but on a normal object graph (or here with nested lists/maps) it fails with an NPE.