[hibernate-issues] [Hibernate-JIRA] Created: (HHH-2849) Better error logging in IdentifierGeneratorFactory.java

[Antony Stubbs (JIRA)]

Better error logging in IdentifierGeneratorFactory.java
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                 Key: HHH-2849
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2849
             Project: Hibernate3
          Issue Type: Patch
          Components: core
    Affects Versions: 3.2.4.sp1, 3.3
            Reporter: Antony Stubbs
            Priority: Minor
         Attachments: IdentifierGeneratorFactory.java.patch

When specifying an incorrect id generator class in the hibernate mapping file, the following error messages are produced for the exception:
Caused by: java.lang.RuntimeException: Exception building SessionFactory: could not instantiate id generator
Caused by: org.hibernate.MappingException: could not instantiate id generator
Caused by: org.hibernate.MappingException: could not interpret id generator strategy: 
com.x.persistence.sdfhibernate.SomeIdentityGenerator

This doesn't show which mapping it's talking about.
The patch I submitted slightly improves the message by adding the entity name:
Caused by: org.hibernate.MappingException: could not instantiate id generator for entity com.x.persistence.hibernate.EntityClass

admitedly I haven't tested it yet, because I am unable to get maven to build hibernate. but i'm working on that now (unable to download org.codehaus.mojo:antlr-maven-plugin:pom:2.0-SNAPSHOT)

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