MappingException: Unknown entity: java.lang.String

chady · **Joined:** Wed Jan 28, 2009 8:31 pm **Posts:** 54

Hi I have a code who work on hibernate 2
But not in hibernate 3.
I what to delete all row on the table Xc4dvoy.

Code:

public void deleteAllRows() throws HibernateException {
      Session session = null;

      try {
         session = HibernateUtil.getSessionFactory().getCurrentSession();

         session.beginTransaction();
         session.delete("from Xc4dvoyPojo");
         session.getTransaction().commit();

      } catch (HibernateException e) {
         session.getTransaction().rollback();
         e.printStackTrace();
      } finally {

         HibernateUtil.getSessionFactory().close();

      }
   }

[code]

console

Quote:

2009-02-23 15:15:22 ca.canassistance.tools.Log info
INFO: Début du batch de la mettre à jour d une table temporaire réclamations Inclaims
16 [main] INFO org.hibernate.cfg.Environment - Hibernate 3.3.1.GA
16 [main] INFO org.hibernate.cfg.Environment - hibernate.properties not found
16 [main] INFO org.hibernate.cfg.Environment - Bytecode provider name : javassist
16 [main] INFO org.hibernate.cfg.Environment - using JDK 1.4 java.sql.Timestamp handling
47 [main] INFO org.hibernate.cfg.Configuration - configuring from resource: /hibernate.cfg.xml
47 [main] INFO org.hibernate.cfg.Configuration - Configuration resource: /hibernate.cfg.xml
172 [main] INFO org.hibernate.cfg.Configuration - Reading mappings from resource : Infogene.hbm.xml
234 [main] INFO org.hibernate.cfg.HbmBinder - Mapping class: ca.canassistance.pojo.InfogenePojo -> INFOGENE
250 [main] INFO org.hibernate.cfg.Configuration - Reading mappings from resource : DomainesDeValeurs.hbm.xml
265 [main] INFO org.hibernate.cfg.HbmBinder - Mapping class: ca.canassistance.pojo.DomainesDeValeursPojo -> DOMAINES_DE_VALEURS
265 [main] INFO org.hibernate.cfg.Configuration - Reading mappings from resource : Xc4dvoy.hbm.xml
281 [main] INFO org.hibernate.cfg.HbmBinder - Mapping class: ca.canassistance.pojo.Xc4dvoyPojo -> XC4DVOY
281 [main] INFO org.hibernate.cfg.Configuration - Configured SessionFactory: null
359 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - Using Hibernate built-in connection pool (not for production use!)
359 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - Hibernate connection pool size: 20
359 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - autocommit mode: false
375 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - using driver: oracle.jdbc.OracleDriver at URL: jdbc:oracle:thin:@s1ora01s:1521:s1ora01i
375 [main] INFO org.hibernate.connection.DriverManagerConnectionProvider - connection properties: {user=factcan, password=****}
562 [main] INFO org.hibernate.cfg.SettingsFactory - RDBMS: Oracle, version: Oracle Database 10g Enterprise Edition Release 10.2.0.2.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
562 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC driver: Oracle JDBC driver, version: 10.2.0.2.0
562 [main] INFO org.hibernate.dialect.Dialect - Using dialect: org.hibernate.dialect.Oracle10gDialect
578 [main] INFO org.hibernate.transaction.TransactionFactoryFactory - Transaction strategy: org.hibernate.transaction.JDBCTransactionFactory
578 [main] INFO org.hibernate.transaction.TransactionManagerLookupFactory - No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended)
578 [main] INFO org.hibernate.cfg.SettingsFactory - Automatic flush during beforeCompletion(): disabled
578 [main] INFO org.hibernate.cfg.SettingsFactory - Automatic session close at end of transaction: disabled
578 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC batch size: 15
578 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC batch updates for versioned data: disabled
578 [main] INFO org.hibernate.cfg.SettingsFactory - Scrollable result sets: enabled
578 [main] INFO org.hibernate.cfg.SettingsFactory - JDBC3 getGeneratedKeys(): disabled
578 [main] INFO org.hibernate.cfg.SettingsFactory - Connection release mode: auto
578 [main] INFO org.hibernate.cfg.SettingsFactory - Default batch fetch size: 1
578 [main] INFO org.hibernate.cfg.SettingsFactory - Generate SQL with comments: disabled
578 [main] INFO org.hibernate.cfg.SettingsFactory - Order SQL updates by primary key: disabled
578 [main] INFO org.hibernate.cfg.SettingsFactory - Order SQL inserts for batching: disabled
578 [main] INFO org.hibernate.cfg.SettingsFactory - Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
578 [main] INFO org.hibernate.hql.ast.ASTQueryTranslatorFactory - Using ASTQueryTranslatorFactory
578 [main] INFO org.hibernate.cfg.SettingsFactory - Query language substitutions: {}
578 [main] INFO org.hibernate.cfg.SettingsFactory - JPA-QL strict compliance: disabled
578 [main] INFO org.hibernate.cfg.SettingsFactory - Second-level cache: enabled
578 [main] INFO org.hibernate.cfg.SettingsFactory - Query cache: disabled
578 [main] INFO org.hibernate.cfg.SettingsFactory - Cache region factory : org.hibernate.cache.impl.NoCachingRegionFactory
578 [main] INFO org.hibernate.cfg.SettingsFactory - Optimize cache for minimal puts: disabled
578 [main] INFO org.hibernate.cfg.SettingsFactory - Structured second-level cache entries: disabled
578 [main] INFO org.hibernate.cfg.SettingsFactory - Echoing all SQL to stdout
578 [main] INFO org.hibernate.cfg.SettingsFactory - Statistics: disabled
578 [main] INFO org.hibernate.cfg.SettingsFactory - Deleted entity synthetic identifier rollback: disabled
578 [main] INFO org.hibernate.cfg.SettingsFactory - Default entity-mode: pojo
578 [main] INFO org.hibernate.cfg.SettingsFactory - Named query checking : enabled
625 [main] INFO org.hibernate.impl.SessionFactoryImpl - building session factory
828 [main] INFO org.hibernate.impl.SessionFactoryObjectFactory - Not binding factory to JNDI, no JNDI name configured
org.hibernate.MappingException: Unknown entity: java.lang.String
at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:580)
at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1365)
at org.hibernate.event.def.DefaultDeleteEventListener.onDelete(DefaultDeleteEventListener.java:100)
at org.hibernate.event.def.DefaultDeleteEventListener.onDelete(DefaultDeleteEventListener.java:74)
at org.hibernate.impl.SessionImpl.fireDelete(SessionImpl.java:793)
at org.hibernate.impl.SessionImpl.delete(SessionImpl.java:771)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:342)
at $Proxy0.delete(Unknown Source)
at ca.canassistance.model.dao.Xc4dvoyDAO.deleteAllRows(Xc4dvoyDAO.java:193)
at ca.canassistance.service.InClaimsServicePersistance.deleteAllRows(InClaimsServicePersistance.java:132)
at ca.canassistance.batch.ReclamerInClaims.viderTaBle(ReclamerInClaims.java:68)
at ca.canassistance.batch.ReclamerInClaims.<init>(ReclamerInClaims.java:60)
at ca.canassistance.batch.ReclamerInClaims.main(ReclamerInClaims.java:369)

and my hibernate cfg.xml
[code]

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
<session-factory >


<property name="hibernate.connection.url">jdbc:oracle:thin:@s1ora01s:1521:s1ora01i</property>
<property name="hibernate.connection.driver_class">oracle.jdbc.OracleDriver</property>
<property name="hibernate.connection.username">factcan</property>
<property name="hibernate.connection.password">factcan</property>



<property name="dialect">org.hibernate.dialect.Oracle10gDialect</property>

<property name="hibernate.show_sql">true</property>
<property name="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</property>
<property name="hibernate.current_session_context_class">org.hibernate.context.ThreadLocalSessionContext</property>

<mapping resource="Infogene.hbm.xml"/>
<mapping resource="DomainesDeValeurs.hbm.xml"/>
<mapping resource="Xc4dvoy.hbm.xml"/>
</session-factory>

</hibernate-configuration>

[/code]

my hbm
[code]

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" >

<hibernate-mapping package="ca.canassistance.pojo">
<class
name="Xc4dvoyPojo"
table="XC4DVOY"
>
<meta attribute="sync-DAO">false</meta>
<id
name="id"
type="integer"
column="ID"
>
<generator class="increment"/>
</id>

<property
name="sttRegistnNum"
column="STT-REGISTN-NUM"
type="string"
not-null="false"
length="12"
/>
<property
name="sttRecordType"
column="STT_RECORD_TYPE"
type="string"
not-null="false"
length="1"
/>
<property
name="sttServiceLineNum"
column="STT_SERVICE_LINE_NUM"
type="integer"
not-null="false"
length="5"
/>
<property
name="sttAdjustmentAction"
column="STT_ADJUSTMENT_ACTION"
type="string"
not-null="false"
length="5"
/>

</class>
</hibernate-mapping>
[/code]
so I have a org.hibernate.MappingException: Unknown entity: java.lang.String wow.
Can someOne help please

littypreethkr · **Posted:** Tue Feb 24, 2009 5:47 am

In Hibernate 3 many session methods are removed. But if you really want to use them then they are available in org.hibernate.classic.Session interface. You can use these methods my casting the session object to org.hibernate.classic.Session type.

Plz see the following for details:
http://www.hibernate.org/250.html#A6

mmerder · **Posted:** Tue Feb 24, 2009 6:29 am

you could also rewrite your query to:

Code:

session.createQuery("delete Xc4dvoyPojo").executeUpdate();