Horizontal mapping not working in Kodo 4.1.2

Question

Hello,
I am having troubles in trying to get the class mapping I want in Kodo 4.1.2.
I want to go from Kodo 3.3 to Kodo 4.1, and still in the evaluation process. Basically, all I want is to have my package.jdo files to work in Kodo 4.1, with the minimum modifications, before moving to JPA.
The mapping is defined is my package.jdo using the <extension vendor-name="kodo" key="jdbc-class-map" value="XXX"/> where XXX can be one of horizontal, base or flat (I dont use vertical in this applicaion). This element does not seem to be properly recognized by the new mapping tool, and all my classes are mapped in the same base table.
After some digging in the docs and in the examples provided, I found this <inheritance strategy="XXX"/> element, that can be put in my package.jdo file. This is not clearly said in the docs (it seems this element is only mentionned in the new orm DTD), but is used in the sample/jdo/horizontal/package.jdo file.
Then I modified my package.jdo files, with this new element, where XXX is one of subclass-table, new-table (with no <join/> nested element) or superclass-table. But the result is not the one expected : all the classes are mapped in the same table.
I then gave a try at the example provided, compiled, enhanced and mapped the sample/jdo/horizontal classes provided with the distribution, since this example covers exactly what I want to do. It seems to me that this example does not work either.
The package.jdo says :
<jdo>
<package name="samples.jdo.horizontal">
<sequence name="sjvm" factory-class="sjvm" strategy="nontransactional"/>
<class name="LastModified">
<inheritance strategy="subclass-table"/>
</class>
The mapping file I get says :
<mapping>
<package name="samples.jdo.horizontal">
<class name="LastModified">
<jdbc-class-map type="base" pk-column="ID" table="LASTMODIFIED"/>
<jdbc-version-ind type="version-number" column="VERSN"/>
<jdbc-class-ind type="in-class-name" column="TYP"/>
<field name="creationDate">
<jdbc-field-map type="value" column="CREATIONDATE"/>
</field>
<field name="lastModificationDate">
<jdbc-field-map type="value" column="LASTMODIFICATIONDATE"/>
</field>
</class>
The enhancement is made using jdoc, the mapping file is generated using the following command line (the DB is empty) :
mappingtool -a refresh -f mapping.xml samples.jdo.horizontal.LastModifiedI would expect an horizontal mapping, with a class element containing only a <jdbc-class-map type="horizontal"/> element, as it is the case if I use my Kodo 3.3 mapping tool.
I tried the enhancement / mapping file generation process with two configuration of the kodo.properties file : the first one with kodo3 as the Mapping Factory and the second with jdo. The result is the same in both cases. I verified by setting the log level to TRACE for the Tool what the factory used. In fact in both case, it is the MappingFileDeprecatedJDOMappingFactory, which seems weird to me.
Bytheway, setting the MappingFactory to jpa leads to the following IllegalArgumentException during enhancement :
Exception in thread "main" org.apache.openjpa.lib.util.ParseException: Instantiation of plugin "MetaDataFactory" with value "jpa" caused an error "java.lang.IllegalArgumentException : java.lang.ClassNotFoundException: jpa". The alias or class name may have been misspelled, or the class may not have be available in the class path. Valid aliases for this plugin are: [jdo, kodo3]
I'd be glad to get any hint if I'm wrong on anything, or any workaround / patch to get my case to work.
Thank you in advance,
Jose

Answer 1

If the same exact app and code works with 4.0 with the same ForeignKeyDeleteAction setting, I suggest that you open a case with support.
This property hasn't changed since 4.0
http://e-docs.bea.com/kodo/docs41/full/html/ref_guide_mapping_defaults.html
Laurent