[SLING-12238] Prevent NullPointerException if global transformer returns null

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Rewriter 1.3.8
• Fix Version/s: Rewriter 1.3.10
• Component/s: General
• Assignee: Carsten Ziegeler
• Reporter: Carsten Ziegeler
• Created: 24/Jan/24 05:41
• Updated: 27/Jan/24 12:13
• Resolved: 24/Jan/24 05:49

Description

A TransformerFactory for a global transformer might return null for the Transformer, similar the factory might already be gone. Both result in a null value inserted into the array of global transformers.
Later on, when that array is processed, there is no null check anymore. Potentially resulting in a NullPointerException
This should be guarded with a null check, as this might happen in a dynamic system