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Quartz connector mule
- 1. Presented By Sindhu VL Quartz Connector - Mule
- 2. Description : The Quartz Connector supports the scheduling of programmatic events, both inside and outside your Mule flow. An inbound quartz endpoint can be used to trigger inbound events that can be repeated, such as every second. Outbound quartz endpoints can be used to schedule an existing event to fire at a later date. Users can create schedules using cron expressions, and events can be persisted in a database.
- 3. Attributes : The attributes under general properties available while configuring Quartz connector are : Display Name Cron Expression Repeat Interval Repeat count Start delay Job : Connector Configuration
- 4. a. Display Name : It can be anything. b. Cron Expression : A cron expression is a string comprised by six or seven fields in it separated by white space. Fields can contain any of the allowed values, along with the various combinations of allowed special characters for that field.
- 5. We can use cron expressions to create schedulers. Cron expression can be as simple as : * * * * ? *. More complex expression is : 0 0/5 14,18,3-39,52 ? JAN,MAR,SEP MON-FRI 2002-2010. The CronTrigger uses the powerful "cron expressions" that helps to set more powerful schedules like "Executing a job every Thursday morning at 6.00 AM" or "Executing a job at 45 minutes past midnight on a daily basis" etc.
- 6. Format for cron expression:
- 7. c. Repeat Interval : This acts as a default scheduler. If no cron expression is given, then this helps in providing the required time schedule. But this is not as powerful as cron. It has only three fields : Hours, minutes and seconds. We cannot use this repeat interval to schedule for a day in a week or month or year.
- 8. d. Repeat count : Represented in milli seconds. If the Repeat Count is 0, then the instruction will be interpreted as FireNow. If the Repeat Count is > 0, then the instruction will be interpreted as RescheduleNowWithExistingRepeatCount. If the Repeat Count is -1, then the instruction will be interpreted as FireNowAndRepeatForever.
- 9. e. Start delay : Represented in milli seconds. It is the delay before starting the job for the first time. f. Job : Jobs are used to perform an action when a time trigger occurs from the Quartz component. Mule provides number of jobs for generating and scheduling events.
- 10. g. Connector Configuration : Use the dropdown list to select a previously configured connector configuration for this endpoint. If you have not created a connector configuration for this type of endpoint, you can do so from this window by clicking Add. Click Edit to modify a previously created global element.