Hi all,
I'm encountering what I believe to be a bug, that someone more familiar with
Cayenne's internals than me might want to take a look at :)
In short: If I create a new DataObject, add it to two different relationships
on another object and then attempt to commit the whole thing—it fails.
Consider the following code:
ObjectContext oc = createContext();
Person person = oc.newObject( Person.class );
Address address = oc.newObject( Address.class );
person.addToAddresses( address );
person.setLatestAddress( address );
oc.commitChanges();
This will result in the following exception:
Exception in thread "main" org.apache.cayenne.CayenneRuntimeException:
[v.4.1.M1-SNAPSHOT Aug 31 2017 12:03:09] Can't extract a master key. Missing
key (id), master ID (<ObjectId:Person, TEMP:00000058A5520119>)
at
org.apache.cayenne.access.DataDomainSyncBucket$PropagatedValueFactory.get(DataDomainSyncBucket.java:290)
at
org.apache.cayenne.query.BatchQueryRow.getValue(BatchQueryRow.java:64)
at
org.apache.cayenne.query.InsertBatchQuery$1.getValue(InsertBatchQuery.java:63)
at
org.apache.cayenne.access.translator.batch.InsertBatchTranslator.doUpdateBindings(InsertBatchTranslator.java:121)
at
org.apache.cayenne.access.translator.batch.DefaultBatchTranslator.updateBindings(DefaultBatchTranslator.java:78)
at
org.apache.cayenne.access.jdbc.BatchAction.runAsIndividualQueries(BatchAction.java:163)
at
org.apache.cayenne.access.jdbc.BatchAction.performAction(BatchAction.java:87)
at
org.apache.cayenne.access.DataNodeQueryAction.runQuery(DataNodeQueryAction.java:97)
at org.apache.cayenne.access.DataNode.performQueries(DataNode.java:293)
at
org.apache.cayenne.access.DataDomainFlushAction.runQueries(DataDomainFlushAction.java:233)
at
org.apache.cayenne.access.DataDomainFlushAction.flush(DataDomainFlushAction.java:153)
at org.apache.cayenne.access.DataDomain.onSyncFlush(DataDomain.java:633)
at
org.apache.cayenne.access.DataDomain.onSyncNoFilters(DataDomain.java:603)
at
org.apache.cayenne.access.DataDomain$DataDomainSyncFilterChain.onSync(DataDomain.java:764)
at
org.apache.cayenne.tx.TransactionFilter$1.perform(TransactionFilter.java:73)
at
org.apache.cayenne.tx.TransactionFilter$1.perform(TransactionFilter.java:70)
at
org.apache.cayenne.tx.DefaultTransactionManager.performInTransaction(DefaultTransactionManager.java:87)
at
org.apache.cayenne.tx.DefaultTransactionManager.performInLocalTransaction(DefaultTransactionManager.java:59)
at
org.apache.cayenne.tx.DefaultTransactionManager.performInTransaction(DefaultTransactionManager.java:52)
at
org.apache.cayenne.tx.DefaultTransactionManager.performInTransaction(DefaultTransactionManager.java:40)
at
org.apache.cayenne.tx.TransactionFilter.onSync(TransactionFilter.java:70)
at
org.apache.cayenne.access.DataDomain$DataDomainSyncFilterChain.onSync(DataDomain.java:764)
at org.apache.cayenne.access.DataDomain.onSync(DataDomain.java:590)
at
org.apache.cayenne.access.DataContext.flushToParent(DataContext.java:742)
at
org.apache.cayenne.access.DataContext.commitChanges(DataContext.java:691)
at pktest.Main.main(Main.java:28)
If someone would like to have a look, I've created a project that replicates
the problem—just build it and run pktest.Main
https://github.com/hugith/pktest <https://github.com/hugith/pktest>
Cheers,
- hugi
