Question

I have 2 separate modules in separate .jars which operate on 2 different databases.

The applicationContext-hibernate.xml files contain unique names for the session factories, and the web.xml loads (should load? I hope so.) both context.xml files. I also defined one of the custom sessionFactory namesin the web.xml, as you cen see here:

web.xml

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath*:/applicationContext-hibernate.xml</param-value>
</context-param>
[...]
<filter>
    <filter-name>hibernateFilter</filter-name>
    <filter-class>
        org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
    </filter-class>
    <init-param>
        <param-name>sessionFactoryBeanName</param-name>
        <param-value>customsessionFactory</param-value>
    </init-param>
</filter>

So the first database connection works as intended. But how do I go about to add the second one?
Only one of the database beans is available from the context (of course, since the other one is not added)

I only found “How to handle multiple database connections using session factories with Spring and Hibernate” but I don’t understand the answer there.

Answer 1

as long as you have defined the 2 sessionFactories with different ID’s.. you can pass the path of the 2nd xml file seperating it with a comma

<param-value>classpath*:/applicationContext-hibernate.xml, <<2nd file reference>></param-value>

Once you have this setup.. spring will be able to init 2 sessionFactories..

– Option 1

you need to create 2 instances of hibernateTemplate (one for each session Factory) and inject them both into your DAO, this way you can use the hibernatetemplate to work with multiple sessionFactories..

– Option 2

while working with HibernateDaoSupport you can use the method createHibernateTemplate(sesionFactoryReference) to create a template object with a specific sessionFactory.