[PLC4X-109] Add comparision to previous values as TriggerStrategy to TriggeredScraper

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.3.1
• Fix Version/s: 0.5.0
• Assignee: Tim Mitsch
• Reporter: Tim Mitsch
• Created: 09/Apr/19 15:19
• Updated: 12/Aug/19 00:03
• Resolved: 12/Aug/19 00:03

Description

Currently the Triggered scraper can be used to Trigger when a field value changes to a given value. But often times you want to trigger when a field value changes generally (no matter what the new value is).
This Ticket aims to implement such a "value-changed" Strategy.