java.lang.RuntimeException: json can't serialize type : class org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean

[taushant]

I get following error when using this tool with Spring 3.2.4, Spring Data MongoDB 1.3.1, and Quartz 2.1.7

java.lang.RuntimeException: json can't serialize type : class org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean
at com.mongodb.util.ClassMapBasedObjectSerializer.serialize(ClassMapBasedObjectSerializer.java:77)
at com.mongodb.util.JSONSerializers$MapSerializer.serialize(JSONSerializers.java:307)
at com.mongodb.util.ClassMapBasedObjectSerializer.serialize(ClassMapBasedObjectSerializer.java:79)

My quartz-job.xml looks like this

<?xml version="1.0" encoding="UTF-8"?>  
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p" 
xsi:schemaLocation="http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

<!-- The bean that does the actual work -->
<bean id="myTask" class="com.abcd.quartz.MyTask" />

<!-- Quartz uses Trigger, Job and JobDetail objects to realize scheduling of all kinds of jobs. 
        For the basic concepts behind Quartz, have a look at http://www.opensymphony.com/quartz.
        See: http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/scheduling.html#scheduling-quartz -->
<bean id="jobAbcd" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
  <property name="targetObject" ref="myTask" />
  <property name="targetMethod" value="doAbcd" />
  <property name="concurrent" value="false" />
</bean>

<!-- startDelay: Delay 10 seconds 
        cronExpression:Repeat every 5 minutes -->       
<bean id="cronTrigger4jobAbcd" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
        <property name="jobDetail" ref="jobAbcd" /> 
        <property name="startDelay" value="10000" />
        <property name="cronExpression" value="0 0/5 * * * ?" />
 </bean>

<!--  SCHEDULER FOR ALL JOBS -->
<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
        <property name="waitForJobsToCompleteOnShutdown" value="true" />
        <property name="triggers">
            <list>
                <ref bean="cronTrigger4jobAbcd" />
            </list>
        </property>
        <property name="quartzProperties"> 
            <props> 
                <prop key="org.quartz.jobStore.class">com.novemberain.quartz.mongodb.MongoDBJobStore</prop>
                <prop key="org.quartz.jobStore.mongoUri">mongodb://localhost:27017</prop> 
                <prop key="org.quartz.jobStore.dbName">mydb</prop>
                <prop key="org.quartz.jobStore.collectionPrefix">qrtz</prop>
                <prop key="org.quartz.threadPool.threadCount">4</prop><!-- thread count setting is ignored by the MongoDB store but Quartz requires it  -->
            </props>
        </property>
</bean>

MyTask.java

package com.abcd.quartz;
public class MyTask{    
    public void doAbcd() {      
            System.out  
            .println("Current Time : " + Calendar.getInstance().getTime());             
    }   
}

[michaelklishin]

MongoDB Java driver cannot serialize Spring beans, so job store cannot store them.

[taushant]

Understood but then how do I use quartz-mongodb with Spring? Is there a workaround? Or are you saying that Spring and quartz-mongo are incompatible and do not work together - period?

[michaelklishin]

MongoDB Java driver does not allow extending it to arbitrary types. Avoid storing Spring beans in jobDetail.

[taushant]

Thanks for the response. I will try doing what you suggest.