How to execute method using spring beans

Question

I need findItemByPIdEndDate() method of the MngtImpl class to be invoked every 5000ms, but nothing appears to be happening. Am I missing something?

<bean id="findItemByPIdEndDate" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
  <property name="targetObject" ref="MngtImpl"/>
  <property name="targetMethod" value="findItemByPIdEndDate"/>
  <property name="repeatInterval" value="50000"/>
</bean>

@matt b I've read some of this, everything is new to me here ..so I came with this .. and again its not working, what am I missing this time ?

<bean id="findItemByPIdEndDate" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
  <property name="targetObject" ref="MngtImpl" />
  <property name="targetMethod" value="findItemByPIdEndDate" />
</bean>

<bean id="compareDateTrigger" class="org.springframework.scheduling.quartz.SimpleTriggerBean">
    <property name="jobDetail" ref="findItemByPIdEndDate" />
    <property name="startDelay" value="0" />
    <property name="repeatInterval" value="50000" />
</bean>

Answer 1

For this task, the Chapter 23. Scheduling and Thread Pooling is your friend. That said, here is a short summary.

First, define your Job:

<bean id="findItemByPIdEndDate" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
  <property name="targetObject" ref="MngtImpl"/>
  <property name="targetMethod" value="findItemByPIdEndDate"/>
</bean>

Now, you need to schedule the job using a trigger and a SchedulerFactoryBean. For the trigger, I suggest to use a SimpleTriggerBean in your case:

<bean id="simpleTrigger" class="org.springframework.scheduling.quartz.SimpleTriggerBean">
  <!-- see the example of method invoking job above -->
  <property name="jobDetail" ref="findItemByPIdEndDate" />
  <!-- 10 seconds -->
  <property name="startDelay" value="10000" />
  <!-- repeat every 50 seconds -->
  <property name="repeatInterval" value="50000" />
</bean>

To finalize everything, set up the SchedulerFactoryBean:

<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
  <property name="triggers">
    <list>
      <ref bean="simpleTrigger" />
    </list>
  </property>
</bean>

Answer 2

You need a lot more plumbing than that to make Quartz work. Just declaring the MethodInvokingJobDetailFactoryBean on its own will do nothing.

However, Quartz is overkill for this, Java5+ can do this on its own. I suggest reading up on Spring's ScheduledExecutorFactoryBean, which in combination with MethodInvokingRunnable, allows you to invoke your method periodically.

Answer 3

What you've done so far is the equivalent of only instantiating a MethodInvokingJobDetailFactoryBean() - essentially all you've done is created the Job. Now you need to have some configuration for how it's scheduled, and what triggers it.

Take a look at the section in the Spring manual on Quartz.