How to disable autoload?

Gubber · **Posted:** Sun Mar 15, 2009 8:16 am

Hello, I have a little problem. I use Spring and Hibernate. When I try to set a property, Hibernate try to SELECT from database. But it's no good becouse I can't set property without open session. For example:

Hibernate version:3.3.1

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>
    <class name="ru.gubber.partnership.model.SystemProperties" table="SYSTEM_PROPERTIES">
        <id name="propIdent" column="PROPERTY_IDENT">
            <generator class="assigned"/>
        </id>

        <property name="propValue" column="PROPERTY_VALUE" />
    </class>
</hibernate-mapping>

Code between sessionFactory.openSession() and session.close():

Code:

                logger.debug("1");
                SystemProperties props = (SystemProperties) session.load(SystemProperties.class, propIdent);
                logger.debug("2");
                if (props == null) props = new SystemProperties(propIdent);
                logger.debug("3");
                props.setPropValue(propValue);
                logger.debug("4");
                session.saveOrUpdate(propValue);
                logger.debug("5");

logtrace:
14:46:45,375 DEBUG ru.gubber.partnership.dao.PropertiesDAO :36 - 1
14:46:45,375 DEBUG ru.gubber.partnership.dao.PropertiesDAO :38 - 2
14:46:45,375 DEBUG ru.gubber.partnership.dao.PropertiesDAO :40 - 3
Hibernate: select systemprop0_.PROPERTY_IDENT as PROPERTY1_14_0_, systemprop0_.PROPERTY_VALUE as PROPERTY2_14_0_ from SYSTEM_PROPERTIES systemprop0_ where systemprop0_.PROPERTY_IDENT=?
[/code]
What should I do to disable auto-load?

mmerder · **Posted:** Mon Mar 16, 2009 7:06 am

Well, as soon as you access a property a proxy becomes initialized and there is know way to avoid it, as far as i know.

If the problem is, that you change the property outside a session, you have to use session.get instead of session.load:

Code:

SystemProperties props = (SystemProperties) session.get(SystemProperties.class, propIdent); 

Gubber · **Posted:** Mon Mar 23, 2009 8:55 am

mmerder wrote:

Well, as soon as you access a property a proxy becomes initialized and there is know way to avoid it, as far as i know.

If the problem is, that you change the property outside a session, you have to use session.get instead of session.load:

Code:

SystemProperties props = (SystemProperties) session.get(SystemProperties.class, propIdent); 

I can't do session.get becouse i want to create new instance of SystemProperties and in that moment I haven't any records in DB.

nordborg · **Posted:** Mon Mar 23, 2009 3:18 pm

Quote:

I can't do session.get becouse i want to create new instance of SystemProperties and in that moment I haven't any records in DB.

Then you should of course use neither Session.get() nor Session.load(). Instead you should simply do:

Code:

SystemProperties props = new SystemProperties();

and when you are done setting all properties:

Code:

session.save(props);

nordborg · **Posted:** Mon Mar 23, 2009 3:26 pm

Hmmm... maybe I should have read the code example from the first post more carefully. It should work as expected if you replace session.load() with session.get().

Session.get() returns null if an entity doesn't exists in the database, but session.load() simply assumes that an instance exists (it doesn't check!) and returns an uninitialized proxy.