cron

There are three ways of creating a cron trigger:

• Using an OpenHAB style cron expression
• Specifying each cron field as named arguments
• Using a simpler every syntax

Using a cron expression

rule 'Using Cron Syntax' do
  cron '43 46 13 ? * ?'
  run { logger.info "Cron rule executed" }
end

Using cron fields

Cron Field Names

Each field is optional, but at least one must be specified. The same rules for the standard cron expression apply for each field. For example, multiple values can be separated with a comma within a string. Omitted fields will default to * or ? as applicable.

# Run every 3 minutes on Monday to Friday
# equivalent to the cron expression '0 */3 * ? * MON-FRI *'
rule 'Using cron fields' do
  cron second: 0, minute: '*/3', dow: 'MON-FRI'
  run { logger.info "Cron rule executed" }
end

Using Every syntax

See: every