I am using Hibernate 2.1.3 and have some strange behavior. Im doing a proof of concept for standardizing on Hibernate here at work, so any help would be greatly appreciated.

It seems hibernate will not work if I use both a <version> and <cache> tag in the same persistent base class.

If I have caching enabled for the class, and the timestamp/version property mapped as a simple property, the mappings work fine.

Also if I have the timestamp property mapped as the <version> property, with no cache enabled, the mappings work fine.

But If I have both <version> and <cache> in the same mapping file, things get out of whack. First I get a PropertyAccess error telling me to turn off the reflection optimizer, which I did.

Then I ran under the debugger and watched what was going on. the AbstractEntityPersister setter[] gets out of sync with the value[], observed at this line of code, AbstractEntityPersister.221, so the setter for the version property which expects a timestamp, is being passed a String, which is the value of a different persistent property, and throwing an IllegalArgumentException....



Could it have something to do with the class hierarchy it looks something like this

Abstract Non Persistent Base Class A
Abstract Persistent Base Classes B,C,D extend A
Concrete Persistent Classes B1,B2,B3 extend B
Concrete Persistent Classes C1,C2,D3 extend C
Concrete Persistent Classes D1,C2,D3 extend D

The inheretence is mapped using table per subclass...

Thnaks for any help..

Nowhere near enough information here.

Sorry bout that... Here is a mapping file for the abstract persistent base class, B in the example above, the UserType in the version property maps a SQL date to a java Timestamp.

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping
package="market.territory.bean">

<class name="TerritoryBean" table="TERRITORY">
<!--<cache usage="read-write"/>-->
<id name="id" column="TERRITORY_TKEY">
<generator class="market.util.HibernateIdentifierGenerator">
<param name="sequence">TERRITORY_TKEY_SEQ</param>
</generator>
</id>
<version access="property" name="modifiedDate" type="market.util.TimestampDateType" column="MODIFIED_DATE"/>
<!-- no descriminator in table per subclass i.e joined subclass
<discriminator type="string" column="TERRITORY_TYPE"/>-->
<!--<property name="modifiedDate" not-null="true" column="MODIFIED_DATE"/>
--><property name="territoryType" column="TERRITORY_TYPE"/>
<property name="name" not-null="true" column="TERRITORY_NAME"/>
<property name="abbreviation" not-null="true" column="TERRITORY_ABBR"/>
<property name="description" column="TERRITORY_DESC"/>
<property name="modifiedBy" not-null="true" column="MODIFIED_BY"/>


<component name="lifetime">
<property name="creationTime" column="CREATION_DATE"/>
<property name="retirementTime" column="RETIREMENT_DATE"/>
</component>

<bag name="nameHistory" lazy="true" cascade="all">
<cache usage="read-write"/>
<key column="TERRITORY_TKEY"/>
<one-to-many class="NameHistoryBean"/>
</bag>


</class>

<query name="TerritoryBean.findByName">
from TerritoryBean as ter where ter.name = :name
</query>
<query name="TerritoryBean.findByAbbreviation">
from TerritoryBean as ter where ter.abbreviation = :abbr
</query>

</hibernate-mapping>



and here is the mapping for the concrete subclass of B

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping
package="market.geographicterritory.bean">

<joined-subclass name="GeographicTerritoryBean" table="GEOGRAPHIC_TERRITORY" extends="market.territory.bean.TerritoryBean">

<key column="TERRITORY_TKEY"/>
<property name="placeType" not-null="true" column="GEOGRAPHIC_TERRITORY_TYPE"/>

<bag name="territoryChildren" table="GEOGRAPHIC_TERRITORY_DIVISION" lazy="true">
<key column="PARENT_GEO_TERRITORY_TKEY"/>
<many-to-many class="GeographicTerritoryBean" column="DIVISION_GEO_TERRITORY_TKEY"/>
</bag>


<!-- To Do: retrieves with separate sql where only 1 is needed -->
<one-to-one name="primeTerritory" class="PrimeTerritoryBean"/>


<bag name="nativeLanguages" table="NATIVE_LANGUAGE" lazy="true">
<cache usage="read-write"/>

<key column="TERRITORY_TKEY"/>
<many-to-many class="market.language.bean.LanguageBean" column="RIGHTS_LANGUAGE_TKEY"/>
</bag>


<bag name="territoryLeaves" table="GEOGRAPHIC_TERRITORY_LEAVES" lazy="true">
<cache usage="read-write"/>

<key column="PARENT_GEO_TERRITORY_TKEY"/>
<many-to-many class="GeographicTerritoryBean" column="TERRITORY_TKEY"/>
</bag>

</joined-subclass>


</hibernate-mapping>

The hibernate.cfg.xml with the OSCache config

<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">

<hibernate-configuration>
<session-factory>
<property name="show_sql">false</property>
<property name="hibernate.query.substitutions">true 'Y', false 'N'</property>
<property name="hibernate.dialect">net.sf.hibernate.dialect.OracleDialect</property>
<property name="hibernate.connection.datasource">ejbDataSource</property>
<property name="hibernate.jndi.class">weblogic.jndi.WLInitialContextFactory</property>
<property name="jta.UserTransaction">java:comp/UserTransaction</property>
<property name="hibernate.transaction.factory_class">net.sf.hibernate.transaction.JTATransactionFactory</property>
<property name="hibernate.transaction.manager_lookup_class">net.sf.hibernate.transaction.WeblogicTransactionManagerLookup</property>
<property name="hibernate.session_factory_name">hibernate</property>
<property name="hibernate.use_outer_join">true</property>
<property name="hibernate.cache.use_query_cache">true</property>
<property name="hibernate.cache.provider_class">net.sf.hibernate.cache.OSCacheProvider</property>

<mapping resource="market/territory/bean/TerritoryBean.hbm.xml"/>
<mapping resource="market/geographicterritory/bean/GeographicTerritoryBean.hbm.xml"/>

<mapping resource="market/geographicterritory/bean/PrimeTerritoryBean.hbm.xml"/>
<mapping resource="market/namedterritorygroup/bean/NamedTerritoryGroupBean.hbm.xml"/>
<mapping resource="market/territory/bean/NameHistoryBean.hbm.xml"/>
<mapping resource="market/territoryset/bean/TerritoryChoiceBean.hbm.xml"/>
<mapping resource="market/territoryset/bean/TerritorySetBean.hbm.xml"/>

<mapping resource="market/media/bean/MediaBean.hbm.xml"/>
<mapping resource="market/mediaset/bean/MediaChoiceBean.hbm.xml"/>
<mapping resource="market/mediaset/bean/MediaSetBean.hbm.xml"/>
<mapping resource="market/exhibmedia/bean/ExhibitionMediaBean.hbm.xml"/>
<mapping resource="market/distribmedia/bean/DistributionMediaBean.hbm.xml"/>
<mapping resource="market/language/bean/LanguageBean.hbm.xml"/>
<mapping resource="market/languageset/bean/LanguageChoiceBean.hbm.xml"/>
<mapping resource="market/languageset/bean/LanguageSetBean.hbm.xml"/>
<mapping resource="market/market/bean/MarketBean.hbm.xml"/>


</session-factory>
</hibernate-configuration>


The oscache.properties

cache.memory=true
cache.capacity=1000000
cache.algorithm=com.opensymphony.oscache.base.algorithm.LRUCache
cache.persistence.class=com.opensymphony.oscache.plugins.diskpersistence.DiskPersistenceListener
cache.path=c:\\logs\\


Im running this in Weblogic 8.1 , going against Oracle 9.2

Thanks!

Here's the log file entry where the exception occurs

DimensionBean is the abstract non persistent base class

2004-06-22 11:21:05,737 ERROR property.BasicPropertyAccessor - IllegalArgumentException in class: market.dimension.DimensionBean, setter method of property: modifiedDate
2004-06-22 11:21:05,737 ERROR property.BasicPropertyAccessor - expected type: java.sql.Timestamp, actual value: java.lang.String