Quartz transport in Mule allows scheduling events to occur repeatedly or at specific times in the future. Cron expressions are used to define schedules and can be simple, like running every minute, or complex, like running on certain days and dates. Jobs are actions performed when a time trigger occurs. For example, a Mule application can be configured to write a file to an outbound endpoint at regular intervals using Quartz.

1. By Anirban Sen Chowdhary

2. Quartz transport can be used in Mule application to schedule an event to take place.
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.
Source: MuleSoft

3. Cron Expressions: A cron expression is a string comprised by six or seven fields separated
by white space. Fields can contain any of the allowed values, along with various
combinations of the allowed special characters for that field.
We can use cron expressions to create schedulers
Example of cron expression :
Cron expressions can be as simple as this:
* * * * ? *
or more complex, like this:
0 0/5 14,18,3-39,52 ? JAN,MAR,SEP MON-FRI 2002-2010.
Source: MuleSoft

4. Jobs :- Jobs are used to perform an action when a time trigger occurs from the Quartz
transport. Mule provides a number of jobs for generating and scheduling events.
Source: MuleSoft

5. Now let’s test an application with Quartz

6. Let’s suppose we have a simple application designed to write a file to an
outbound endpoint at a specific interval of time as follow :-

7. The mule config will be as follow :-
As you can see the flow is designed to write a file to a folder at a specific
interval of time

8. We start and run our application as follow:-
We can find the application has start working and the Quartz is making the
flow to write the file in the outbound endpoint after each specific interval of
time

9. In the outbound folder you can see the files are generated at each
interval of time:-

10. In my next slide I will bring some other techniques in Mule
implementation .
Hope you have enjoyed this simpler version.
Keep sharing your knowledge and let our Mule community grow 