Expression tree
A tree of expression terms that each evaluate to a boolean (True/False) value. Terms can be grouped together within an expression operator (AND, OR, NOT).
For example:
AND (
Feed is CSV_FEED
Type = Raw Events
)
Expression Trees are used in
Processor Filters
Processor filter
A Processor Filter is used to used to find Streams to process through the Pipeline associated with the Processor Filter. A Processor Filter consists of an expression tree to select which Streams to process and a tracker to track the what Streams have been processed.Click to see more details... and
Query
Query
The search Query in a Dashboard that selects the data to display. The Query is constructed using an Expression Tree of terms.Click to see more details... expressions.
See Also
-
Query
Query
The search Query in a Dashboard that selects the data to display. The Query is constructed using an Expression Tree of terms.Click to see more details…
- Expression functions
Last modified October 20, 2026: Merge pull request #144 from gchq/add-7.14-rel-notes (2c6fb22)