[NIFI-1927] Improve documentation of property's ability to use Expression Languages

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Assignee: Unassigned
• Reporter: Joe Percivall
• Created: 26/May/16 20:10
• Updated: 18/Apr/18 18:24

Description

Currently in the documentation for properties there is a simple true/false on whether or not Expression Language(EL) is supported for that property. This trivializes the extent of EL and for some hides some functionality. There are multiple different options when deciding to evaluate EL, the most relevant to the user are: whether or not a FlowFile is used and if there are any extra key/value pairs exposed.

The documentation should be explicit so that the user knows what will get evaluated and what is exposed.

Issue Links

• is duplicated by: NIFI-4415 Processors should be explicit in what is evaluated for a property that supports Expression Language