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What is the syntax of IF plugin condition

Here are some examples of IF action plugin conditions.

  1. Simple condition with equals operator:
payload@field == "value"
  1. Complex condition with AND:
(payload@field1 == "value1" AND payload@field2 != "value2")
  1. Complex condition with OR:
(payload@field1 > 10 OR payload@field2 <= 5)
  1. BETWEEN condition:
payload@age BETWEEN 18 AND 30
  1. IS NULL condition:
session@user_id IS NULL
  1. EXISTS condition:
profile@email EXISTS
  1. NOT EXISTS condition:
memory@key NOT EXISTS
  1. Compound value in a function:
event@timestamp > datetime(2023-01-01T00:00:00)
  1. Empty condition:
flow@details EMPTY
  1. Complex condition with nested parentheses:
(payload@field1 == "value1" AND (payload@field2 != "value2" OR payload@field3 > 0))
  1. Complex condition that uses data functions.
(
    payload@age > 18 AND 
    (
        event@event_type == "click" OR 
        [email protected] == "add_to_cart"
    ) AND 
    (
        [email protected] > 25 AND 
        (
            event@action == "purchase" OR 
            [email protected] == "add_to_cart"
        )
    )
) OR (
    (
        payload@quantity BETWEEN 10 AND 50 OR 
        payload@timestamp BETWEEN 1631233200 AND 1631319600
    ) AND 
    (
        payload@description IS NULL OR 
        event@type IS NOT NULL
    ) AND 
    (
        [email protected] EXISTS AND 
        profile@address NOT EXISTS
    )
) AND (
    (
        memory@notes EMPTY OR 
        payload@items NOT EMPTY
    ) AND 
    (
        payload@keywords CONTAINS "technology" OR 
        event@tags CONTAINS "important"
    )
) AND (
    (
        payload@name STARTS WITH "John" OR 
        event@description ENDS WITH "exciting event"
    ) AND 
    (
        event@participants[0] == "Alice" OR 
        event@ratings[2] >= 4.5
    )
) AND (
    now("europe/warsaw") > datetime("2021-01-01 00:00:00") AND 
    now("europe/london") < now.offset(payload@time, "+700 days")
)
  1. CONTAINS Condition (contains string):

  2. Check if keywords in payload contain "technology":

      payload@keywords CONTAINS "technology"
    

  3. Check if event tags contain the word "important":

      event@tags CONTAINS "important"
    

  4. STARTS WITH/ENDS WITH String Conditions:

  5. Check if payload name starts with "John":

      payload@name STARTS WITH "John"
    

  6. Check if event description ends with "exciting event":

      event@description ENDS WITH "exciting event"
    

Remember, these examples follow the syntax you provided and assume that the specified fields like payload@keywords , event@tags, payload@name, and event@participants[0], etc. exist in the data structure you're working with.