job enters infinite loop

[meremortal]

I have defined a job with custom item reader, writer and processor. It doesn't do much, just dummy things, but it enters an infinite loop. In the log I see that after an item writer finishes the execution, the item reader is directly called; in other words the steps repeats again and again and never finishes. I cannot figure out what should be done in order to make a step complete.

These are job configurations:

	<batch:job id="myJob" >
	  <batch:step id="myStep" >
	    <batch:tasklet >
	      <batch:chunk reader="myReader" processor="myProcessor" writer="myWriter" commit-interval="1" />
	    </batch:tasklet
	  </batch:step>
	</batch:job>

    <bean id="jobLauncher" class="org.springframework.batch.core.launch.support.SimpleJobLauncher">
        <property name="jobRepository" ref="jobRepository"/>
    </bean>
	
	<bean id="transactionManager" class="org.springframework.batch.support.transaction.ResourcelessTransactionManager"/>
	
	<bean id="jobRepository"
		class="org.springframework.batch.core.repository.support.MapJobRepositoryFactoryBean">
		<property name="transactionManager" ref="transactionManager"/>
		<property name="isolationLevelForCreate" value="ISOLATION_DEFAULT"/>
	</bean>

Reader, Processor, Writer:

public class DummyReader implements ItemReader < String > {
   public String read ( ) {
     return "dummy";
   }
}

public class DummyProcessor implements ItemProcessor < String, String> {

	public String process ( String item ) throws Exception {
		//do nothing
		return item;
	}
}

public class DummyWriter implements ItemWriter < String > {
	public void write ( List < ? extends String > items ) throws Exception {
            //do nothing
       }
}

Thnx

[Dave Syer]

Your ItemReader doesn't follow the contract from the interface (http://static.springsource.org/sprin...temReader.html).

[meremortal]

Thanks Dave. It wasn't obvious to me when I was reading the user guide and I made a different assumption about the way it should work; and I did not look into the api docs.