oops, this: https://github.com/apache/cayenne/pull/173/files
> On 2 Aug 2017, at 15:54, Amedeo Mantica <[email protected]> wrote: > > Hi, > may be related to this ? > > https://github.com/apache/cayenne/commit/814de6546f03e5276d2d100b4c79fe2d4062d5f6 > > has been included in 4 ? > > Amedeo > >> On 2 Aug 2017, at 09:14, Nikita Timofeev <[email protected]> wrote: >> >> Hi Maik, >> >> D you have any meaningful PK or FK, inheritance or flattened >> attributes in your model? >> And maybe you can reduce number of entities involved or even better >> provide some test schema on which problem occurs? >> >> On Wed, Aug 2, 2017 at 7:46 AM, Musall, Maik <[email protected]> wrote: >>> Hi, >>> >>> does nobody have any idea? Should I post this on the dev list because it >>> could be a Cayenne bug? >>> >>> Maik >>> >>> >>>> Am 28.07.2017 um 17:20 schrieb Musall, Maik <[email protected]>: >>>> >>>> Hi, >>>> >>>> I've been trying to resolve an unpleasant problem for a few days now. I'm >>>> trying to save a graph of new and changed objects related to each other, >>>> using a PostgreSQL 9.5 database. The number of objects is in the range >>>> between 10 and 100 usually. Several objects of the same class each, and >>>> numerous relationships involved. The model as a whole contains a few >>>> indirect cyclic relationships, but in these failing inserts, there aren't >>>> any cyclic relations involved. >>>> >>>> I get something like this: >>>> >>>> org.apache.cayenne.CayenneRuntimeException: [v.4.0.B2-SNAPSHOT Jul 12 2017 >>>> 08:27:18] Commit Exception >>>> at >>>> org.apache.cayenne.access.DataContext.flushToParent(DataContext.java:774) >>>> at >>>> org.apache.cayenne.access.DataContext.commitChangesToParent(DataContext.java:682) >>>> at >>>> com.selbstdenker.canusa.powerd.PDObjectContext.saveChanges(PDObjectContext.java:171) >>>> (stuff ommitted) >>>> Caused by: org.postgresql.util.PSQLException: ERROR: duplicate key value >>>> violates unique constraint "pdcjourneyelementtexts_pk" >>>> Detail: Key (journeyelementtextskey)=(1528690) already exists. >>>> at >>>> org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2198) >>>> at >>>> org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1927) >>>> at >>>> org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:405) >>>> at >>>> org.postgresql.jdbc2.AbstractJdbc2Statement.executeBatch(AbstractJdbc2Statement.java:2892) >>>> at >>>> com.zaxxer.hikari.pool.ProxyStatement.executeBatch(ProxyStatement.java:125) >>>> at >>>> com.zaxxer.hikari.pool.HikariProxyPreparedStatement.executeBatch(HikariProxyPreparedStatement.java) >>>> at >>>> org.apache.cayenne.access.jdbc.BatchAction.runAsBatch(BatchAction.java:120) >>>> at >>>> org.apache.cayenne.access.jdbc.BatchAction.performAction(BatchAction.java:85) >>>> 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$DataDomainSyncFilterChain.onSync(DataDomain.java:764) >>>> at >>>> org.apache.cayenne.commitlog.CommitLogFilter.onSync(CommitLogFilter.java:85) >>>> at >>>> org.apache.cayenne.access.DataDomain$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) >>>> ... 60 more >>>> >>>> A few notes: >>>> >>>> * Before this insert, the max primary key of this table was 1528658, last >>>> sequence value was 1528688. >>>> * It happens with one of the tables involved each time, and the table this >>>> happens with changes randomly. >>>> * I had all but the m:n cross tables set to database-generated pk, but >>>> also tried having everything Cayenne-generated (so that Cayenne would be >>>> fetching new sequence values before inserting, which I verified it did). >>>> Makes no difference. >>>> * I verified before each test run that all sequence values are between 0 >>>> and 32 greater than the current max primary key of the corresponding table >>>> (wrote a script for that). >>>> >>>> Then I did some research and found that maybe Cayenne fails to figure out >>>> a proper insert ordering. So I tried using WeightedAshwoodEntitySorter >>>> with @SortWeight (now in cayenne-server), following this mail thread: >>>> https://lists.apache.org/thread.html/0452cd5ca9de85f19882539710588f1b221da7627f845902ed10a7b6@1461051077@%3Cuser.cayenne.apache.org%3E >>>> >>>> <https://lists.apache.org/thread.html/0452cd5ca9de85f19882539710588f1b221da7627f845902ed10a7b6@1461051077@%3Cuser.cayenne.apache.org%3E> >>>> but with that the application won't even start up because one of the first >>>> DML statements already fails: >>>> >>>> Caused by: java.lang.NullPointerException: No record for DbEntity: >>>> org.apache.cayenne.map.DbEntity@a92be4f[name=PDCUserLeafletLog] >>>> at >>>> org.apache.cayenne.ashwood.AshwoodEntitySorter$DbEntityComparator.compare(AshwoodEntitySorter.java:368) >>>> at >>>> org.apache.cayenne.ashwood.AshwoodEntitySorter$DbEntityComparator.compare(AshwoodEntitySorter.java:352) >>>> at >>>> org.apache.cayenne.ashwood.WeightedAshwoodEntitySorter$WeightedDbEntityComparator.compare(WeightedAshwoodEntitySorter.java:103) >>>> at >>>> org.apache.cayenne.ashwood.WeightedAshwoodEntitySorter$WeightedDbEntityComparator.compare(WeightedAshwoodEntitySorter.java:95) >>>> at java.util.TimSort.countRunAndMakeAscending(TimSort.java:355) >>>> at java.util.TimSort.sort(TimSort.java:220) >>>> at java.util.Arrays.sort(Arrays.java:1512) >>>> at java.util.ArrayList.sort(ArrayList.java:1454) >>>> at java.util.Collections.sort(Collections.java:175) >>>> at >>>> org.apache.cayenne.ashwood.AshwoodEntitySorter.sortDbEntities(AshwoodEntitySorter.java:182) >>>> at >>>> org.apache.cayenne.access.DataDomainInsertBucket.appendQueriesInternal(DataDomainInsertBucket.java:56) >>>> at >>>> org.apache.cayenne.access.DataDomainSyncBucket.appendQueries(DataDomainSyncBucket.java:78) >>>> at >>>> org.apache.cayenne.access.DataDomainFlushAction.preprocess(DataDomainFlushAction.java:185) >>>> at >>>> org.apache.cayenne.access.DataDomainFlushAction.flush(DataDomainFlushAction.java:143) >>>> 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$DataDomainSyncFilterChain.onSync(DataDomain.java:764) >>>> at >>>> org.apache.cayenne.commitlog.CommitLogFilter.onSync(CommitLogFilter.java:85) >>>> at >>>> org.apache.cayenne.access.DataDomain$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) >>>> ... 18 more >>>> >>>> This again points to this mail thread: >>>> http://cayenne.195.n3.nabble.com/Erratic-AshwoodEntitySorter-NPE-on-Latest-Snapshot-td4027453.html#a4028225 >>>> >>>> <http://cayenne.195.n3.nabble.com/Erratic-AshwoodEntitySorter-NPE-on-Latest-Snapshot-td4027453.html#a4028225> >>>> and the NPE message is actually an output of the mentioned commit that >>>> Andrus added at the time, but the mail thread stopped there in December. >>>> >>>> The mentioned class PDCUserLeafletLog has @SortWeight(1000), inherited >>>> from the CayenneDataObject subclass that I use for everything. I assigned >>>> lower sort weights, starting at 1, for the main root classes that should >>>> be inserted first, incrementing for each relationship from there. >>>> >>>> So at this point, I'm at a loss how to solve this. Any help is greatly >>>> appreciated. >>>> >>>> Thanks >>>> Maik >>>> >>> >> >> >> >> -- >> Best regards, >> Nikita Timofeev >
