Re: PB-API: retrieval of collection of objects with inheritance

Armin Waibel Tue, 19 Apr 2005 10:14:05 -0700

Hi Dima,

I wrote a test based on your example and get the same exception. Thanks for point that out.

regards,
Armin

Sakovsky, Dmytro wrote:

Sorry, this time I am just putting everethying into the message
Hi! I recently posted the same problem on OJB bug list but did not have a chance to provide all needed information on time. Issue #OJB-21. I am attaching all the sources I have with the exception. Description Not possible to retrieve(possible update) collections of objects with inheritance. Collection consist of derived type of object( not base). The result exception says that foreign key field not found in derived object(true, because it is in base). Tried with extensions, anonymous etc.

Thanks Dima

<descriptor-repository version="1.0"
                       isolation-level="read-uncommitted"
                       proxy-prefetching-limit="50">
   
   <class-descriptor
          class="KeyIndicatorAggChart"
          table="XSL_RPT_KI_AGG_CHART_T"
   >
      <field-descriptor
         name="id"
         column="ID"
         jdbc-type="INTEGER"
         primarykey="true"
         autoincrement="true"
         sequence-name="XSL_RPT_ASSOC_OBJ_ID_SEQ"
         access="anonymous"
      />
      <field-descriptor
         name="chartID"
         column="CHART_ID"
         jdbc-type="INTEGER"
      />
   </class-descriptor>
   
   <class-descriptor
          class="KeyIndicatorCondChart"
          table="XSL_RPT_KI_COND_CHART_T"
   >
      <field-descriptor
         name="id"
         column="ID"
         jdbc-type="INTEGER"
         primarykey="true"
         autoincrement="true"
         sequence-name="XSL_RPT_ASSOC_OBJ_ID_SEQ"
         access="anonymous"
      />
      <reference-descriptor
                name="super"
                class-ref="KeyIndicatorAggChart"
                auto-retrieve="true"
                auto-update="true"
                auto-delete="true"
      >
                <foreignkey field-ref="id"/>
          </reference-descriptor>
   </class-descriptor>
   
   <class-descriptor
          class="ObjectGroupAnalysisChart"
          table="XSL_RPT_OBJ_GROUP_ANL_CHART_T"
   >
      <field-descriptor
         name="id"
         column="ID"
         jdbc-type="INTEGER"
         primarykey="true"
         autoincrement="true"
         sequence-name="XSL_ADM_SEQ"
      />
          <collection-descriptor
                name="keyIndicators"
                element-class-ref="KeyIndicatorCondChart"
                auto-retrieve="true"
                auto-update="none"
                auto-delete="true">
                <inverse-foreignkey field-ref="chartID"/>
          </collection-descriptor>
   </class-descriptor>
</descriptor-repository>
(metadata.RepositoryPersistor        178 ) Read class descriptors took 90 ms
(core.PersistenceBrokerFactoryDefaultImpl 74  ) Create PersistenceBroker
instanc
e pool, pool configuration was {whenExhaustedAction=0, maxIdle=-1,
maxActive=100
, maxWait=2000, removeAbandoned=false, numTestsPerEvictionRun=10,
testWhileIdle=
false, minEvictableIdleTimeMillis=1000000, testOnReturn=false,
logAbandoned=fals
e, removeAbandonedTimeout=300, timeBetweenEvictionRunsMillis=-1,
testOnBorrow=fa
lse}
(core.PersistenceBrokerFactoryBaseImpl 92  ) Create new PB instance for
PBKey or
g.apache.ojb.broker.PBKey: jcdAlias=pooled, user=void, password=*****,
already c
reated persistence broker instances: 0
DBConnection Pool @(#)$Id: DBConnectionPool.java,v 6.24 2004/08/24 18:47:13
mmak
sin Exp $(cache.ObjectCacheFactory            65  ) Start creating new
ObjectCac
he instance
(cache.ObjectCacheFactory            86  ) Default ObjectCache class was
org.apa
che.ojb.broker.cache.ObjectCacheEmptyImpl
(cache.CacheDistributor              82  ) Use property
'descriptorBasedCaches'
is set 'false'
(cache.ObjectCacheFactory            88  ) Instantiate new
org.apache.ojb.broker
.cache.CacheDistributor class object
(cache.ObjectCacheFactory            119 ) New ObjectCache instance was
created
org.apache.ojb.broker.OJBRuntimeException: Incorrect or not found field referenc e name 'chartID' in descriptor org.apache.ojb.broker.metadata.CollectionDescript [EMAIL PROTECTED],cascade_store=none,cascade_delete=object,is_ lazy =false,class_of_Items=class KeyIndicatorCondChart] for class-descriptor 'KeyIndicatorCondChart' at org.apache.ojb.broker.metadata.ObjectReferenceDescriptor.getForeignKeyFieldD escriptors(ObjectReferenceDescriptor.java:131) at org.apache.ojb.broker.core.QueryReferenceBroker.getFKQuery1toN(QueryReferenc eBroker.java:697) at org.apache.ojb.broker.core.QueryReferenceBroker.getFKQuery(QueryReferenceBro ker.java:630) at org.apache.ojb.broker.core.QueryReferenceBroker.retrieveCollection(QueryRefe renceBroker.java:561) at org.apache.ojb.broker.core.QueryReferenceBroker.retrieveCollections(QueryRef erenceBroker.java:748) at org.apache.ojb.broker.core.PersistenceBrokerImpl.getDBObject(PersistenceBrok erImpl.java:1303) at org.apache.ojb.broker.core.PersistenceBrokerImpl.doGetObjectByIdentity(Persi stenceBrokerImpl.java:1367) at org.apache.ojb.broker.core.PersistenceBrokerImpl.getObjectByIdentity(Persist enceBrokerImpl.java:1346) at org.apache.ojb.broker.core.DelegatingPersistenceBroker.getObjectByIdentity(D elegatingPersistenceBroker.java:312) at org.apache.ojb.broker.core.DelegatingPersistenceBroker.getObjectByIdentity(D elegatingPersistenceBroker.java:312) at com.telcordia.xsl.test.scheduler.OJBTest.testBroker(OJBTest.java) at com.telcordia.xsl.test.scheduler.OJBTest.main(OJBTest.java)
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Re: PB-API: retrieval of collection of objects with inheritance

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