[UNOMI-411] Fix bug in property condition evaluator

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: unomi-1.5.5
• Assignee: Unassigned
• Reporter: Liat
• Created: 19/Dec/20 17:50
• Updated: 11/Apr/23 07:30
• Resolved: 24/Apr/21 06:06

Description

When querying using "exist" operator in Condition, an existQuery is created and sent to Elasticsearch. According to ES documentation, exist return false the the field in null or empty list - "[]".

The case of an empty list wasn't handled in the eval() method of property condition evaluator. Need to return false if the field exist but has a value which is empty list.