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Exception in maintenance thread while deleting a collection #180

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WillemElbers opened this issue Mar 31, 2022 · 0 comments
Open

Exception in maintenance thread while deleting a collection #180

WillemElbers opened this issue Mar 31, 2022 · 0 comments
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@WillemElbers

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@WillemElbers
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The following stacktrace was observed in the log:

2022-03-31 11:36:29,626 ERROR [eu.clarin.cmdi.virtualcollectionregistry.VirtualCollectionRegistryMaintenanceImpl#perform:78] - unexpected error while doing maintenance
javax.persistence.RollbackException: Error while committing the transaction
	at org.hibernate.internal.ExceptionConverterImpl.convertCommitException(ExceptionConverterImpl.java:81) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:104) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at eu.clarin.cmdi.virtualcollectionregistry.VirtualCollectionRegistryMaintenanceImpl.purgeDeletedCollections(VirtualCollectionRegistryMaintenanceImpl.java:207) ~[classes/:?]
	at eu.clarin.cmdi.virtualcollectionregistry.VirtualCollectionRegistryMaintenanceImpl.perform(VirtualCollectionRegistryMaintenanceImpl.java:75) ~[classes/:?]
	at eu.clarin.cmdi.virtualcollectionregistry.VirtualCollectionRegistryImpl$1.run(VirtualCollectionRegistryImpl.java:96) ~[classes/:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[?:?]
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305) ~[?:?]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305) ~[?:?]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[?:?]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[?:?]
	at java.lang.Thread.run(Thread.java:834) ~[?:?]
Caused by: javax.persistence.PersistenceException: org.hibernate.exception.ConstraintViolationException: could not execute statement
	at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.ExceptionConverterImpl.convertCommitException(ExceptionConverterImpl.java:65) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	... 10 more
Caused by: org.hibernate.exception.ConstraintViolationException: could not execute statement
	at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:59) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:200) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.jdbc.batch.internal.NonBatchingBatch.addToBatch(NonBatchingBatch.java:46) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:3618) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:3878) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.action.internal.EntityDeleteAction.execute(EntityDeleteAction.java:124) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:604) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.spi.ActionQueue.lambda$executeActions$1(ActionQueue.java:478) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at java.util.LinkedHashMap.forEach(LinkedHashMap.java:684) ~[?:?]
	at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:475) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:348) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:40) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:102) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1362) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:453) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3212) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2380) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:447) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:183) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:40) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:281) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:101) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	... 9 more
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Cannot delete or update a parent row: a foreign key constraint fails (`vcr`.`resource`, CONSTRAINT `FKEBABC40E8E3FCDB` FOREIGN KEY (`vc_id`) REFERENCES `virtualcollection` (`id`))
	at jdk.internal.reflect.GeneratedConstructorAccessor90.newInstance(Unknown Source) ~[?:?]
	at jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?]
	at java.lang.reflect.Constructor.newInstance(Constructor.java:490) ~[?:?]
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:404) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.Util.getInstance(Util.java:387) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:932) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3878) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3814) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2478) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2625) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2551) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1861) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2073) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2009) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.PreparedStatement.executeLargeUpdate(PreparedStatement.java:5094) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1994) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at org.apache.tomcat.dbcp.dbcp2.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:120) ~[tomcat-dbcp.jar:8.5.70]
	at org.apache.tomcat.dbcp.dbcp2.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:120) ~[tomcat-dbcp.jar:8.5.70]
	at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:197) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.jdbc.batch.internal.NonBatchingBatch.addToBatch(NonBatchingBatch.java:46) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:3618) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:3878) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.action.internal.EntityDeleteAction.execute(EntityDeleteAction.java:124) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:604) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.spi.ActionQueue.lambda$executeActions$1(ActionQueue.java:478) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at java.util.LinkedHashMap.forEach(LinkedHashMap.java:684) ~[?:?]
	at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:475) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:348) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:40) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:102) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1362) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:453) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3212) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2380) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:447) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:183) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:40) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:281) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:101) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	... 9 more
2022-03-31 11:36:57,539 TRACE [eu.clarin.cmdi.wicket.components.LanguageResourceSwitchboardLink#forCollection:69] - Did not find PID of prefered type = HDL for collection with id = 1020
2022-03-31 11:36:57,540 TRACE [eu.clarin.cmdi.wicket.components.CMDIExplorerLink#forCollection:51] - Did not find PID of prefered type = HDL for collection with id = 1020
2022-03-31 11:36:59,697 WARN [org.hibernate.engine.jdbc.spi.SqlExceptionHelper#logExceptions:137] - SQL Error: 1451, SQLState: 23000
2022-03-31 11:36:59,697 ERROR [org.hibernate.engine.jdbc.spi.SqlExceptionHelper#logExceptions:142] - Cannot delete or update a parent row: a foreign key constraint fails (`vcr`.`resource`, CONSTRAINT `FKEBABC40E8E3FCDB` FOREIGN KEY (`vc_id`) REFERENCES `virtualcollection` (`id`))
2022-03-31 11:36:59,697 INFO [org.hibernate.engine.jdbc.batch.internal.AbstractBatchImpl#release:208] - HHH000010: On release of batch it still contained JDBC statements
2022-03-31 11:36:59,702 ERROR [eu.clarin.cmdi.virtualcollectionregistry.VirtualCollectionRegistryMaintenanceImpl#perform:78] - unexpected error while doing maintenance
javax.persistence.RollbackException: Error while committing the transaction
	at org.hibernate.internal.ExceptionConverterImpl.convertCommitException(ExceptionConverterImpl.java:81) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:104) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at eu.clarin.cmdi.virtualcollectionregistry.VirtualCollectionRegistryMaintenanceImpl.purgeDeletedCollections(VirtualCollectionRegistryMaintenanceImpl.java:207) ~[classes/:?]
	at eu.clarin.cmdi.virtualcollectionregistry.VirtualCollectionRegistryMaintenanceImpl.perform(VirtualCollectionRegistryMaintenanceImpl.java:75) ~[classes/:?]
	at eu.clarin.cmdi.virtualcollectionregistry.VirtualCollectionRegistryImpl$1.run(VirtualCollectionRegistryImpl.java:96) ~[classes/:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[?:?]
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305) ~[?:?]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305) ~[?:?]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[?:?]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[?:?]
	at java.lang.Thread.run(Thread.java:834) ~[?:?]
Caused by: javax.persistence.PersistenceException: org.hibernate.exception.ConstraintViolationException: could not execute statement
	at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.ExceptionConverterImpl.convertCommitException(ExceptionConverterImpl.java:65) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	... 10 more
Caused by: org.hibernate.exception.ConstraintViolationException: could not execute statement
	at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:59) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:42) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:200) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.jdbc.batch.internal.NonBatchingBatch.addToBatch(NonBatchingBatch.java:46) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:3618) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:3878) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.action.internal.EntityDeleteAction.execute(EntityDeleteAction.java:124) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:604) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.spi.ActionQueue.lambda$executeActions$1(ActionQueue.java:478) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at java.util.LinkedHashMap.forEach(LinkedHashMap.java:684) ~[?:?]
	at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:475) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:348) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:40) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:102) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1362) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:453) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3212) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2380) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:447) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:183) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:40) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:281) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:101) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	... 9 more
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Cannot delete or update a parent row: a foreign key constraint fails (`vcr`.`resource`, CONSTRAINT `FKEBABC40E8E3FCDB` FOREIGN KEY (`vc_id`) REFERENCES `virtualcollection` (`id`))
	at jdk.internal.reflect.GeneratedConstructorAccessor90.newInstance(Unknown Source) ~[?:?]
	at jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?]
	at java.lang.reflect.Constructor.newInstance(Constructor.java:490) ~[?:?]
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:404) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.Util.getInstance(Util.java:387) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:932) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3878) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3814) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2478) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2625) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2551) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1861) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2073) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2009) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.PreparedStatement.executeLargeUpdate(PreparedStatement.java:5094) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1994) ~[mysql-connector-java-5.1.38.jar:5.1.38]
	at org.apache.tomcat.dbcp.dbcp2.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:120) ~[tomcat-dbcp.jar:8.5.70]
	at org.apache.tomcat.dbcp.dbcp2.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:120) ~[tomcat-dbcp.jar:8.5.70]
	at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:197) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.jdbc.batch.internal.NonBatchingBatch.addToBatch(NonBatchingBatch.java:46) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:3618) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.persister.entity.AbstractEntityPersister.delete(AbstractEntityPersister.java:3878) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.action.internal.EntityDeleteAction.execute(EntityDeleteAction.java:124) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:604) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.spi.ActionQueue.lambda$executeActions$1(ActionQueue.java:478) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at java.util.LinkedHashMap.forEach(LinkedHashMap.java:684) ~[?:?]
	at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:475) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:348) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:40) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:102) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1362) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:453) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3212) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2380) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:447) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:183) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:40) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:281) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:101) ~[hibernate-core-5.4.24.Final.jar:5.4.24.Final]
	... 9 more
@WillemElbers WillemElbers self-assigned this Apr 21, 2022
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