Minor Description
While running imapsync I got following exception. I know why it was thrown (field in JPAProperty requireing not being null) but I'm not sure of the root cause:
09:24:56.789 [ERROR] o.a.j.i.p.AbstractMailboxProcessor - Unexpected error during IMAP processing
org.apache.openjpa.persistence.InvalidStateException: The field "value" of instance "JPAProperty ( id = 144343 localName = namespace = http://james.apache.org/rfc2045/Content-Type/params value = null )" contained a null value; the metadata for this field specifies that nulls are illegal.
at org.apache.openjpa.kernel.SingleFieldManager.preFlush(SingleFieldManager.java:577)
at org.apache.openjpa.kernel.SingleFieldManager.preFlush(SingleFieldManager.java:520)
at org.apache.openjpa.kernel.StateManagerImpl.preFlush(StateManagerImpl.java:3188)
at org.apache.openjpa.kernel.SingleFieldManager.preFlushPC(SingleFieldManager.java:821)
at org.apache.openjpa.kernel.SingleFieldManager.preFlushPCs(SingleFieldManager.java:774)
at org.apache.openjpa.kernel.SingleFieldManager.preFlush(SingleFieldManager.java:674)
at org.apache.openjpa.kernel.SingleFieldManager.preFlush(SingleFieldManager.java:599)
at org.apache.openjpa.kernel.SingleFieldManager.preFlush(SingleFieldManager.java:520)
at org.apache.openjpa.kernel.StateManagerImpl.preFlush(StateManagerImpl.java:3188)
at org.apache.openjpa.kernel.PNewState.beforeFlush(PNewState.java:44)
at org.apache.openjpa.kernel.StateManagerImpl.beforeFlush(StateManagerImpl.java:1110)
at org.apache.openjpa.kernel.BrokerImpl.flush(BrokerImpl.java:2241)
at org.apache.openjpa.kernel.BrokerImpl.flushSafe(BrokerImpl.java:2201)
at org.apache.openjpa.kernel.BrokerImpl.beforeCompletion(BrokerImpl.java:2118)
at org.apache.openjpa.kernel.LocalManagedRuntime.commit(LocalManagedRuntime.java:84)
at org.apache.openjpa.kernel.BrokerImpl.commit(BrokerImpl.java:1603)
at org.apache.openjpa.kernel.DelegatingBroker.commit(DelegatingBroker.java:1035)
at org.apache.openjpa.persistence.EntityManagerImpl.commit(EntityManagerImpl.java:690)
at org.apache.james.mailbox.jpa.JPATransactionalMapper.commit(JPATransactionalMapper.java:71)
at org.apache.james.mailbox.store.transaction.TransactionalMapper.lambda$executeReactive$0(TransactionalMapper.java:51)
at com.github.fge.lambdas.consumers.ConsumerChainer.lambda$sneakyThrow$9(ConsumerChainer.java:73)
at reactor.core.publisher.MonoPeekTerminal$MonoTerminalPeekSubscriber.onNext(MonoPeekTerminal.java:171)
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.complete(MonoIgnoreThen.java:292)
at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.onNext(MonoIgnoreThen.java:187)
at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:129)
at reactor.core.publisher.FluxSubscribeOnCallable$CallableSubscribeOnSubscription.run(FluxSubscribeOnCallable.java:251)
at reactor.core.scheduler.SchedulerTask.call(SchedulerTask.java:68)
at reactor.core.scheduler.SchedulerTask.call(SchedulerTask.java:28)
at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)
