How to instantiate MapJobExplorerFactoryBean

[anschoewe]

I've started using Spring Batch 2.1 but I'm having a problem when trying to add a MapJobExplorerFactoryBean to my application context. Here is my configuration via XML:

<?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:context="http://www.springframework.org/schema/context"
	xmlns:batch="http://www.springframework.org/schema/batch"
	xsi:schemaLocation="
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
		http://www.springframework.org/schema/batch http://www.springframework.org/schema/batch/spring-batch-2.1.xsd">

	<!-- use for production with database: JobExplorerFactoryBean -->
	<bean id="jobExplorer" class="org.springframework.batch.core.explore.support.MapJobExplorerFactoryBean">
		<property name="repositoryFactory" ref="jobRepository" />
	</bean>
	
	<!-- In memory job repository for testing -->
	<bean id="jobRepository" class="org.springframework.batch.core.repository.support.MapJobRepositoryFactoryBean">
  		<property name="transactionManager" ref="transactionManager"/>
	</bean>
	
	<bean id="jobLauncher"
	      class="org.springframework.batch.core.launch.support.SimpleJobLauncher">
	    <property name="jobRepository" ref="jobRepository" />
	</bean>
	
	<bean id="jobRegistry" class="org.springframework.batch.core.configuration.support.MapJobRegistry" />
	<!-- Add a register post-processor to automatically register all jobs as they're created -->
	<bean id="jobRegistryBeanPostProcessor" class="org.springframework.batch.core.configuration.support.JobRegistryBeanPostProcessor">
    <property name="jobRegistry" ref="jobRegistry"/>
	</bean>
	
	<bean id="jobOperator" class="org.springframework.batch.core.launch.support.SimpleJobOperator">
    <property name="jobExplorer" ref="jobExplorer" />
    <property name="jobRepository" ref="jobRepository" />
    <property name="jobRegistry" ref="jobRegistry" />
    <property name="jobLauncher" ref="jobLauncher" />		
	</bean>

	<bean id="sampleTasklet" class="com.myorg.task.ExampleTask" />

	<batch:job id="sampleJob">
		<batch:step id="step0">
			<batch:tasklet ref="sampleTasklet" />
		</batch:step>
	</batch:job>
	

</beans>

As my application starts, I receive the following exception:

Caused by: java.lang.IllegalStateException: Cannot convert value of type [$Proxy25 implementing org.springframework.batch.core.repository.JobRepository,org.springframework.aop.SpringProxy,org.springframework.aop.framework.Advised] to required type [org.springframework.batch.core.repository.support.MapJobRepositoryFactoryBean] for property 'repositoryFactory': no matching editors or conversion strategy found

I don't understand how to create a MapJobExplorerFactoryBean in XML. I think I'm missing something about how a JobRepository and MapJobExplorerFactoryBean are related. Any help is appreciated. Thanks,

Andrew

(And yes, I would like to get this working in memory before I put a real database behind it)

[anschoewe]

Found the solution...

Since I'm relatively new to spring, I didn't realize the correct way to pass a factory around. I needed to put an ampersand '&' in front of my 'ref' decleration. However, I got an XML parse exception when I tried to do that, so I had to escape the ampersand: & ---> &

My correct configuration file looks like:

<?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:context="http://www.springframework.org/schema/context"
	xmlns:batch="http://www.springframework.org/schema/batch"
	xsi:schemaLocation="
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
		http://www.springframework.org/schema/batch http://www.springframework.org/schema/batch/spring-batch-2.1.xsd">

	<!-- use for production with database: JobExplorerFactoryBean -->
	<bean id="jobExplorer" class="org.springframework.batch.core.explore.support.MapJobExplorerFactoryBean">
		<property name="repositoryFactory" ref="&amp;jobRepository" />
	</bean>
	
	<!-- In memory job repository for testing -->
	<bean id="jobRepository" class="org.springframework.batch.core.repository.support.MapJobRepositoryFactoryBean">
  		<property name="transactionManager" ref="transactionManager"/>
	</bean>
	
	<bean id="jobLauncher"
	      class="org.springframework.batch.core.launch.support.SimpleJobLauncher">
	    <property name="jobRepository" ref="jobRepository" />
	</bean>
	
	<bean id="jobRegistry" class="org.springframework.batch.core.configuration.support.MapJobRegistry" />
	<!-- Add a register post-processor to automatically register all jobs as they're created -->
	<bean id="jobRegistryBeanPostProcessor" class="org.springframework.batch.core.configuration.support.JobRegistryBeanPostProcessor">
    <property name="jobRegistry" ref="jobRegistry"/>
	</bean>
	
	<bean id="jobOperator" class="org.springframework.batch.core.launch.support.SimpleJobOperator">
    <property name="jobExplorer" ref="jobExplorer" />
    <property name="jobRepository" ref="jobRepository" />
    <property name="jobRegistry" ref="jobRegistry" />
    <property name="jobLauncher" ref="jobLauncher" />		
	</bean>

	<bean id="sampleTasklet" class="com.myorg.task.ExampleTask" />

	<batch:job id="sampleJob">
		<batch:step id="step0">
			<batch:tasklet ref="sampleTasklet" />
		</batch:step>
	</batch:job>
	

</beans>



I guess this was more of a Spring question than a Spring Batch questions.  Hopefully this helps someone else.

Andrew

[snicoll]

Found the solution...

Since I'm relatively new to spring, I didn't realize the correct way to pass a factory around. I needed to put an ampersand '&' in front of my 'ref' decleration.

uh? No, you don't.