[hibernate-issues] [Hibernate-JIRA] Created: (HHH-5534) Regression in 3.5.5: Cascade on merge for Sets fails with transient entities
Regression in 3.5.5: Cascade on merge for Sets fails with transient entities
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Key: HHH-5534
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5534
Project: Hibernate Core
Issue Type: Bug
Components: core
Affects Versions: 3.5.5
Environment: Hibernate 3.5.5, Oracle 10g.
Reporter: Kyrill Alyoshin
Something happened from 3.5.4 to 3.5.5. Here is regression issue we're experiencing
after upgrade:
We have entities ResearchClientFile and ResearchVendorRecord.
RCF maps RVR:
@Sort(type = SortType.NATURAL)
@OneToMany(mappedBy = "file", fetch = FetchType.LAZY, cascade =
CascadeType.ALL)
public SortedSet<ResearchVendorRecord> getRecords() {
return records;
}
RVR maps RCF:
@ManyToOne(fetch = FetchType.LAZY, optional = false)
@JoinColumn(name = "research_client_file_id")
public ResearchClientFile getFile() {
return file;
}
The following unit test:
ResearchClientFile rcf = RandomUtils.randomBean(ResearchClientFile.class);
rcf.addRecord(RandomUtils.randomBean(ResearchVendorRecord.class));
rcf = session.merge(rcf);
produces the following exception in 3.5.5 but not in 3.5.4.:
java.lang.NullPointerException: null entities are not supported by
org.hibernate.event.def.EventCache
at org.hibernate.event.def.EventCache.containsKey(EventCache.java:80)
at
org.hibernate.event.def.DefaultMergeEventListener.mergeTransientEntity(DefaultMergeEventListener.java:361)
at
org.hibernate.event.def.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:303)
at
org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:258)
at org.hibernate.impl.SessionImpl.fireMerge(SessionImpl.java:869)
equals, hashCode and compareTo are completely consistent in RVR.
The issue seems to affects only Set and SortedSets and on merge only. Lists (with bag
semantics) do not appear to be affected on merge.
Of all the things touch in 3.5.5 (according to the changelog) this issue seems to be the
only one dealing with merge functionality, so I decided to put a comment here. I will also
create a bug that described this in detail.
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