Well if you update a bundle in an OSGi environment another bundle still might reference the "old" bundle you just updated. In your case I'd guess the Hibernate bundle still holds a reference to parts of your entity bundle. For this you'll need to issue a refresh <bundle-id> of the bundle that might still hold a reference to the bundle you just updated. In your case right now I guess the Hibernate bundle needs to be refreshed.
So you're not actually doing anything wrong, cause this is by design. As the bundle wiring needs to be informed which you do with a refresh. regards, Achim 2014-08-23 18:14 GMT+02:00 sreeraaman <[email protected]>: > Hello Everybody, > > I am trying to deploy a jpa application on karaf-3.0.2-SNAPSHOT as a > feature. > > Currently, I have the following bundles. > > 1. domain-bundle (all jpa entites + persistence/orm.xml) > 2. a service bundle where the entity manager is injected into this service > via blueprint. > 3. a rest service bundle (using camel cxfrs) where the service method is > fired as a bean method > invocation. > 4. hibernate as the orm framework (4.3.6.Final). > > All the above bundles are wrapped under one feature. > > The entrypoint to the application is the rest interface which in turn > delegates the call to a camel route and from there the service method is > fired and inside the service bundle, using the entitymanager, I persist the > data into the database. > > Everything works well. The problem however is that, when I make a change to > any of the above 4 four bundles, I try to uninstall the feature and install > the feature again (I guess there is no feature:update for now.). > > After uninstalling and installing the feature, when I try to invoke the > rest > service, it complains with the error: Caused by: > java.lang.IllegalArgumentException: object is not an instance of declaring > class > > But, after uninstalling / installing the feature, if I restart karaf, > everything works. > > The details of each of the bundles are provided below for reference. > > Persistence.xml (domain bundle) > ===================== > > <persistence-unit name="test" transaction-type="JTA"> > <jta-data-source> > > osgi:service/javax.sql.DataSource/(osgi.jndi.service.name=jdbc/testds) > </jta-data-source> > <properties> > <property name="hibernate.hbm2ddl.auto" > value="create-drop"></property> > <property name="hibernate.show_sql" value="true"/> > <property name="hibernate.format_sql" value="true"/> > </properties> > </persistence-unit> > > Service Bundle (blueprint) > ================ > > <bean id="testBean" class="org.test.TestServiceImpl"> > <jpa:context unitname="test" property="entityManager" /> > <tx:transaction method="*" value="Required" /> > <property name="testServiceB" ref="refServiceB"></property> > </bean> > > <service ref="testBean" interface="org.test.api.TestService1Api" > activation="lazy" /> > > <reference id="refServiceB" > interface="org.test.api.TestService2Api" activation="lazy"/> > > </bean> > > Rest Services Bundle (blueprint) > ==================== > > <camel:camelContext id="testContext"> > <camel:package>org.test.rest.routes</camel:package> > </camel:camelContext> > > <reference id="testServiceA" > interface="org.test.api.TestService1Api" activation="eager" /> > > <cxf:rsServer id="test" address="/test/rest" > serviceClass="org.test.rest.impl.TestRestImpl" > loggingFeatureEnabled="true" loggingSizeLimit="20"> > <cxf:providers> > <ref component-id="jsonProvider" /> > </cxf:providers> > <cxf:extensionMappings> > <entry key="json" value="application/json" /> > <entry key="xml" value="application/xml" /> > </cxf:extensionMappings> > </cxf:rsServer> > > <bean id="jsonProvider" > class="org.codehaus.jackson.jaxrs.JacksonJaxbJsonProvider"> > <property name="mapper" ref="jacksonMapper" /> > </bean> > > <bean id="jacksonMapper" > class="org.test.rest.utils.CustomJacksonObjectMapper" /> > > Camel Route: (java dsl): > =============== > > from("cxfrs:bean:test?bindingStyle=SimpleConsumer").routeId("xyz") > .to("log://{camelLogger?level=INFO") > .recipientList(simple("direct:${header.operationName}")); > > from("direct:testMethod1").to("log://camelLogger?level=INFO") > .to("bean:testServiceA?method=serviceMethod1") > .to("log://camelLogger?level=INFO"); > > Datasource Configuration: (blueprint) > ======================= > > <bean id="dataSource" class="org.postgresql.ds.PGPoolingDataSource" > destroy-method="close"> > <property name="serverName" value="localhost"/> > <property name="databaseName" value="test"/> > <property name="portNumber" value="5433"/> > <property name="user" value="test"/> > <property name="password" value="test"/> > <property name="dataSourceName" value="testds"/> > <property name="initialConnections" value="2"/> > <property name="maxConnections" value="4" /> > </bean> > > <service interface="javax.sql.DataSource" ref="dataSource"> > <service-properties> > <entry key="osgi.jndi.service.name" value="jdbc/testds"/> > </service-properties> > </service> > > Feature xml: > =========== > > <features xmlns="http://karaf.apache.org/xmlns/features/v1.2.0"; > name="test-features"> > <feature name="test-features" version="1.0.0-SNAPSHOT" > description="test-features" resolver="(obr)"> > <bundle > start-level="60">mvn:org.test/test-servicea/1.0.0-SNAPSHOT</bundle> > <bundle > start-level="60">mvn:org.test/test-model/1.0.0-SNAPSHOT</bundle> > <bundle > start-level="60">mvn:org.test/test-serviceb/1.0.0-SNAPSHOT</bundle> > <bundle > start-level="60">mvn:org.test/test-rest-service/1.0.0-SNAPSHOT</bundle> > </feature> > </features> > > Hibernate Exception: (after feature uninstall / install) > ================================= > > Caused by: org.hibernate.PropertyAccessException: IllegalArgumentException > occurred calling getter of org.test.model.EntityA.id > at > > org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:192) > at > > org.hibernate.tuple.entity.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:346) > at > > org.hibernate.persister.entity.AbstractEntityPersister.getIdentifier(AbstractEntityPersister.java:4746) > at > > org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:164) > at > > org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:85) > at > org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:876) > at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:858) > at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:863) > at > > org.hibernate.jpa.spi.AbstractEntityManagerImpl.merge(AbstractEntityManagerImpl.java:1196) > ... 86 more > Caused by: java.lang.IllegalArgumentException: object is not an instance of > declaring class > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native > Method)[:1.8.0_05] > at > > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)[:1.8.0_05] > at > > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.8.0_05] > at java.lang.reflect.Method.invoke(Method.java:483)[:1.8.0_05] > at > > org.hibernate.property.BasicPropertyAccessor$BasicGetter.get(BasicPropertyAccessor.java:169) > ... 94 more > > Could it be a classloader issue when the feature is uninstalled and > installed again, the classes are loaded in a different class loader and > somewhere the original classes loaded via a different class loader is being > referenced? Just a wild guess. > > And this happens at the time of merging the entity into the database. I use > T entityManager.merge(T entity) > > Hibernate here might be checking if the passed entity is an instance of > class T. Here is where I doubt that the hibernate entity manager's class > loader and the service class loader are referencing different versions of > the domain bundle via different class loaders. > > Can somebody tell me where am I going wrong? > > Thanks in advance. > > best regards > Sriraman. > > > > > -- > View this message in context: > http://karaf.922171.n3.nabble.com/karaf-jpa-hibernate-error-updating-bundles-via-feature-uninstall-feature-install-tp4034887.html > Sent from the Karaf - User mailing list archive at Nabble.com. > -- Apache Member Apache Karaf <http://karaf.apache.org/> Committer & PMC OPS4J Pax Web <http://wiki.ops4j.org/display/paxweb/Pax+Web/> Committer & Project Lead blog <http://notizblog.nierbeck.de/> Software Architect / Project Manager / Scrum Master
