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noone
 Post subject: lazy="false" not work on many-to-one
PostPosted: Fri Sep 09, 2005 5:16 pm 
Regular
Regular

Joined: Thu Sep 23, 2004 11:53 am
Posts: 83
I set lazy="false" on the many-to-one element yet after I close the session I a getting a proxy exception. any ideas?

Thanks for any suggestions
J

Hibernate version:
3.1

Mapping documents:

Code:
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<!--
        Auto-generated mapping file from
        the hibernate.org cfg2hbm engine
-->
    <class name="com.volant.vini.model.VsiCounty" table="vsi_county" catalog="vini">
        <composite-id name="id" class="com.volant.vini.model.VsiCountyId">
            <key-property name="countyCode" type="string">
                <column name="COUNTY_CODE" length="3" />
            </key-property>
            <key-property name="stateCode" type="string">
                <column name="STATE_CODE" length="2" />
            </key-property>
        </composite-id>
        <many-to-one name="vsiState" class="com.volant.vini.model.VsiState" lazy="false" update="false" insert="false">
            <column name="STATE_CODE" length="2" not-null="true" />
        </many-to-one>
        <property name="countyName" type="string">
            <column name="COUNTY_NAME" length="50" />
        </property>
    </class>
</hibernate-mapping>

Code between sessionFactory.openSession() and session.close():
Code:
      VsiCounty county = (VsiCounty) ViniSessionFactory.currentSession()
            .load(VsiCounty.class, new VsiCountyId("42", "001"));
      ViniSessionFactory.closeSession();
      assertNotNull("state is null", county.getVsiState());

Full stack trace of any exception that occurs:

Code:
ERROR [main] (LazyInitializationException.java:19) - could not initialize proxy - the owning Session was closed
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed
   at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:54)
   at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:85)
   at org.hibernate.proxy.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:131)
   at com.volant.vini.model.VsiCounty$$EnhancerByCGLIB$$593f1e55.getVsiState(<generated>)
   at com.volant.vini.test.db.TestViniDAO.testNoneLazyState(TestViniDAO.java:96)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

Name and version of the database you are using:
Oracle 10 g
The generated SQL (show_sql=true):
na
Debug level Hibernate log excerpt:
na
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david
 Post subject:
PostPosted: Fri Sep 09, 2005 10:42 pm 
Hibernate Team
Hibernate Team

Joined: Tue Aug 26, 2003 7:19 pm
Posts: 2364
Location: Brisbane, Australia
Remove the proxy/lazy setting from the com.volant.vini.model.VsiState mapping. Lasy="false" in your many-to-one will not do what your trying to do.
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noone
 Post subject:
PostPosted: Sun Sep 11, 2005 5:04 pm 
Regular
Regular

Joined: Thu Sep 23, 2004 11:53 am
Posts: 83
tried this with VsiState...

Code:
   <class name="com.volant.vini.model.VsiCounty" table="vsi_county" catalog="vini">
        <composite-id name="id" class="com.volant.vini.model.VsiCountyId">
            <key-property name="countyCode" type="string">
                <column name="COUNTY_CODE" length="3" />
            </key-property>
            <key-property name="stateCode" type="string">
                <column name="STATE_CODE" length="2" />
            </key-property>
        </composite-id>
        <many-to-one name="vsiState" class="com.volant.vini.model.VsiState" lazy="false" update="false" insert="false">
            <column name="STATE_CODE" length="2" not-null="true" />
        </many-to-one>
        <property name="countyName" type="string">
            <column name="COUNTY_NAME" length="50" />
        </property>
    </class>



I even teid setting lazy="true", in both cases the code is throwing the exception.
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noone
 Post subject:
PostPosted: Sun Sep 11, 2005 5:15 pm 
Regular
Regular

Joined: Thu Sep 23, 2004 11:53 am
Posts: 83
copied over the wrong version of the configuration file...

Code:
<class name="com.volant.vini.model.VsiCounty" table="vsi_county" catalog="vini">
        <composite-id name="id" class="com.volant.vini.model.VsiCountyId">
            <key-property name="countyCode" type="string">
                <column name="COUNTY_CODE" length="3" />
            </key-property>
            <key-property name="stateCode" type="string">
                <column name="STATE_CODE" length="2" />
            </key-property>
        </composite-id>
        <many-to-one name="vsiState" class="com.volant.vini.model.VsiState" lazy="true" update="false" insert="false">
            <column name="STATE_CODE" length="2" not-null="true" />
        </many-to-one>
        <property name="countyName" type="string">
            <column name="COUNTY_NAME" length="50" />


also tried the default proxy setting but eh previous code still throws the LaztInitializationException. Is it possible to do egar loading on both sides of the asscoiation?
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noone
 Post subject:
PostPosted: Sun Sep 11, 2005 5:15 pm 
Regular
Regular

Joined: Thu Sep 23, 2004 11:53 am
Posts: 83
copied over the wrong version of the configuration file...

Code:
<class name="com.volant.vini.model.VsiCounty" table="vsi_county" catalog="vini">
        <composite-id name="id" class="com.volant.vini.model.VsiCountyId">
            <key-property name="countyCode" type="string">
                <column name="COUNTY_CODE" length="3" />
            </key-property>
            <key-property name="stateCode" type="string">
                <column name="STATE_CODE" length="2" />
            </key-property>
        </composite-id>
        <many-to-one name="vsiState" class="com.volant.vini.model.VsiState" lazy="true" update="false" insert="false">
            <column name="STATE_CODE" length="2" not-null="true" />
        </many-to-one>
        <property name="countyName" type="string">
            <column name="COUNTY_NAME" length="50" />


also tried the default proxy setting but the previous code still throws the LaztInitializationException. Is it possible to do egar loading on both sides of the asscoiation?
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david
 Post subject:
PostPosted: Sun Sep 11, 2005 8:28 pm 
Hibernate Team
Hibernate Team

Joined: Tue Aug 26, 2003 7:19 pm
Posts: 2364
Location: Brisbane, Australia
H2 - the class level proxy needs to be defined true (or proxy class set).
H3 - the default changed so class level lazy is true unless otherwised defined.

So, in your class mapping for the VsiCounty class use the following

Code:
<class name="com.volant.vini.model.VsiCounty" table="vsi_county" catalog="vini" lazy="false">
...

The lazy setting on the many-to-one is used in a different mode (field level lazy loading) so I suggest you delete the lazy attibute on the many-to-one.
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Hibbie
 Post subject:
PostPosted: Thu Nov 16, 2006 7:05 pm 
Newbie

Joined: Tue Nov 07, 2006 5:06 pm
Posts: 13
Why is this? This seems contrary to everything I've read about lazy-loading and the lazy attribute.
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