[hibernate-issues] [Hibernate-JIRA] Created: (HHH-6305) IncrediblySillyJpaMapsIdMappedIdentifierValueMarshaller attempts to persist detached entities that are part of a composite Primary key for another entity

[Paul Nardone (JIRA)]

IncrediblySillyJpaMapsIdMappedIdentifierValueMarshaller attempts to persist detached entities that are part of a composite Primary key for another entity
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                 Key: HHH-6305
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6305
             Project: Hibernate Core
          Issue Type: Bug
          Components: core, entity-manager
    Affects Versions: 3.6.5
            Reporter: Paul Nardone
         Attachments: test.zip

I have an entity (BookVersion) with a composite ID consisting of many-to-one links to other entities in the system (BookID,Library). The (BookVersion) entity has an IdClass (BookVersionPK) which maps these to Long values. 

When I call merge on a detached instance of the entity  (BookVersion) IncrediblySillyJpaMapsIdMappedIdentifierValueMarshaller attempts to find the ID entities (BookID,Library) in the current context these fail which results in  "Performing implicit derived identity cascade" which attempts to persist the detached ID entities   (BookID,Library)

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