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vadimv
 Post subject: Join.
PostPosted: Tue Aug 01, 2006 10:14 am 
Newbie

Joined: Wed Oct 19, 2005 8:04 am
Posts: 19
I am pretty new to Hibernate and i have a question.
I have 3 tables:

Deployer(Worker)-----one-to-many----Deployment(Action)-----many-to-one----Terminal(object to be deployed)

I need to get list of Terminals knowing only id of Deployer.

1) Deployer

Code:
<class name="dto.Deployer"
    table="deployer"
    lazy="false"
>

    <id
        name="id"
        type="java.lang.Long"
        column="id"
    >
        <generator class="identity" />
    </id>
</class>


2) TerminalDeployment

Code:
<class
    name="dto.TerminalDeployment"
    table="termdeployment"
    lazy="false"
>

    <id
        name="id"
        type="java.lang.Long"
        column="id"
    >
        <generator class="identity" />
    </id>

    <property
        name="terminalId"
        type="java.lang.Long"
        column="terminal_id"
        not-null="true"
        length="11"
    />

    <many-to-one name="terminal" lazy="false"
                  class="dto.Terminal"
                  column="terminal_id"
                  insert="false"
                  update="false"
                  cascade="none"/>
    <many-to-one name="deployer" lazy="false"
                  class="dto.Deployer"
                  column="deployer_id"
                  insert="false"
                  update="false"
                  cascade="none"/>
</class>


3) Terminal

Code:
<class
    name="dto.Terminal"
    table="terminal"
    lazy="false"
>

    <id
        name="terminalID"
        type="java.lang.Long"
        column="id"
    >
        <generator class="identity" />
    </id>
</class>


One deployer can do many deployments(deploys terminal) and one terminal can have many deployments(deployer deploys this terminal) also. Question is, how do i have to modificate my mappings so i could get the List of Terminals that the deployer deployed.
In usual SQL it would be easy, but i am noob in Hibernate.
What should i look at or what to use?
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vadimv
 Post subject:
PostPosted: Tue Aug 01, 2006 12:02 pm 
Newbie

Joined: Wed Oct 19, 2005 8:04 am
Posts: 19
I did fixed Deployer mapping to get List of terminals for the deployer.

Deployer:

Code:
<set name="terminals"  table="dto.TerminalDeployment">
        <key column="deployer_id"/>
        <many-to-many column="terminal_id"
            unique="true"
            class="ee.regio.tracker.dto.Terminal"/>
</set>


But i get an error, since i didn't change other mappings and i need them for others DTOs and DAOs:

org.hibernate.MappingException: duplicate property mapping: terminalId
org.hibernate.mapping.PersistentClass.checkPropertyDuplication(PersistentClass.java:344)
org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:334)
org.hibernate.mapping.RootClass.validate(RootClass.java:188)
org.hibernate.cfg.Configuration.validate(Configuration.java:839)
org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1000)
org.hibernate.jmx.HibernateService.buildSessionFactory(HibernateService.java:64)
org.hibernate.jmx.SessionFactoryStub.getImpl(SessionFactoryStub.java:79)
org.hibernate.jmx.SessionFactoryStub.openSession(SessionFactoryStub.java:67)
ee.regio.tracker.dao.DAO.currentSession(DAO.java:64)
ee.regio.tracker.dao.DeployerDAO.getDeployerByID(DeployerDAO.java:106)
ee.regio.tracker.web.TerminalDeploymentController.processFinish(TerminalDeploymentController.java:24)
org.springframework.web.servlet.mvc.AbstractWizardFormController.validatePagesAndFinish(AbstractWizardFormController.java:667)
org.springframework.web.servlet.mvc.AbstractWizardFormController.processFormSubmission(AbstractWizardFormController.java:490)
org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:259)
org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:139)
org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:44)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:717)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:658)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:392)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:357)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)
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 Profile  
 
vadimv
 Post subject:
PostPosted: Tue Aug 01, 2006 12:19 pm 
Newbie

Joined: Wed Oct 19, 2005 8:04 am
Posts: 19
Hehe fixed that one.
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vadimv
 Post subject:
PostPosted: Tue Aug 01, 2006 12:25 pm 
Newbie

Joined: Wed Oct 19, 2005 8:04 am
Posts: 19
Can u help me with that one bug? :'(

org.hibernate.PropertyAccessException: exception setting property value with CGLIB (set hibernate.cglib.use_reflection_optimizer=false for more info) setter of dto.Deployer.setTerminals
org.hibernate.tuple.PojoTuplizer.setPropertyValuesWithOptimizer(PojoTuplizer.java:203)
org.hibernate.tuple.PojoTuplizer.setPropertyValues(PojoTuplizer.java:173)
org.hibernate.persister.entity.BasicEntityPersister.setPropertyValues(BasicEntityPersister.java:2919)
org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:113)
org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:530)
org.hibernate.loader.Loader.doQuery(Loader.java:436)
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:218)
org.hibernate.loader.Loader.loadEntity(Loader.java:1345)
org.hibernate.loader.entity.EntityLoader.load(EntityLoader.java:116)
org.hibernate.loader.entity.EntityLoader.load(EntityLoader.java:101)
org.hibernate.persister.entity.BasicEntityPersister.load(BasicEntityPersister.java:2471)
org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:351)
org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:332)
org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:113)
org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:151)
org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:79)
org.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:655)
org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:261)
org.hibernate.type.EntityType.resolve(EntityType.java:286)
org.hibernate.type.EntityType.nullSafeGet(EntityType.java:207)
org.hibernate.impl.IteratorImpl.postNext(IteratorImpl.java:92)
org.hibernate.impl.IteratorImpl.<init>(IteratorImpl.java:57)
org.hibernate.loader.hql.QueryLoader.iterate(QueryLoader.java:412)
org.hibernate.hql.ast.QueryTranslatorImpl.iterate(QueryTranslatorImpl.java:281)
org.hibernate.impl.SessionImpl.iterate(SessionImpl.java:935)
org.hibernate.impl.QueryImpl.iterate(QueryImpl.java:41)
ee.regio.tracker.dao.DeployerDAO.getDeployerByID(DeployerDAO.java:109)
ee.regio.tracker.web.TerminalDeploymentController.processFinish(TerminalDeploymentController.java:24)
org.springframework.web.servlet.mvc.AbstractWizardFormController.validatePagesAndFinish(AbstractWizardFormController.java:667)
org.springframework.web.servlet.mvc.AbstractWizardFormController.processFormSubmission(AbstractWizardFormController.java:490)
org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:259)
org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:139)
org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:44)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:717)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:658)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:392)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:357)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)
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