title: Spring-Batch without persisting metadata to database?
body: <p>I want to create a <code>spring-batch</code> job, but I want to run it without any database persistence. Unfortunately spring-batch requires to write <code>metadata</code> ob the job cycles to a database somehow, thus procing me to provide at least some kind of db with transactionmanager and entitymanager.</p>
  
  <p>It it possible to prevent the metadata and run independently from txmanagers and databases?</p>
  
  <p>Update:</p>
  
  <pre><code>ERROR org.springframework.batch.core.job.AbstractJob: Encountered fatal error executing job
  java.lang.NullPointerException
      at org.springframework.batch.core.repository.dao.MapJobExecutionDao.synchronizeStatus(MapJobExecutionDao.java:158) ~[spring-batch-core-3.0.1.RELEASE.jar:3.0.1.RELEASE]
      at org.springframework.batch.core.repository.support.SimpleJobRepository.update(SimpleJobRepository.java:161) ~[spring-batch-core-3.0.1.RELEASE.jar:3.0.1.RELEASE]
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_51]
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_51]
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_51]
      at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_51]
      at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98) ~[spring-tx-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262) ~[spring-tx-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95) ~[spring-tx-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at com.sun.proxy.$Proxy134.update(Unknown Source) ~[?:?]
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_51]
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_51]
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_51]
      at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_51]
      at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$PassthruAdvice.invoke(SimpleBatchConfiguration.java:127) ~[spring-batch-core-3.0.1.RELEASE.jar:3.0.1.RELEASE]
      at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) ~[spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at com.sun.proxy.$Proxy134.update(Unknown Source) ~[?:?]
      at org.springframework.batch.core.job.AbstractJob.updateStatus(AbstractJob.java:416) ~[spring-batch-core-3.0.1.RELEASE.jar:3.0.1.RELEASE]
      at org.springframework.batch.core.job.AbstractJob.execute(AbstractJob.java:299) [spring-batch-core-3.0.1.RELEASE.jar:3.0.1.RELEASE]
      at org.springframework.batch.core.launch.support.SimpleJobLauncher$1.run(SimpleJobLauncher.java:135) [spring-batch-core-3.0.1.RELEASE.jar:3.0.1.RELEASE]
      at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50) [spring-core-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.batch.core.launch.support.SimpleJobLauncher.run(SimpleJobLauncher.java:128) [spring-batch-core-3.0.1.RELEASE.jar:3.0.1.RELEASE]
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_51]
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_51]
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_51]
      at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_51]
      at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317) [spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) [spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) [spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$PassthruAdvice.invoke(SimpleBatchConfiguration.java:127) [spring-batch-core-3.0.1.RELEASE.jar:3.0.1.RELEASE]
      at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) [spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) [spring-aop-4.0.6.RELEASE.jar:4.0.6.RELEASE]
      at com.sun.proxy.$Proxy50.run(Unknown Source) [?:?]
  </code></pre>