[hibernate-issues] [Hibernate-JIRA] Closed: (HHH-5306) Dialect resolution: Cannot set a custom dialect resolver programatically or using hibernate.cfg.xml

Dialect resolution: Cannot set a custom dialect resolver programatically or using hibernate.cfg.xml --------------------------------------------------------------------------------------------------- Key: HHH-5306 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5306 Project: Hibernate Core Issue Type: Bug Components: core Affects Versions: 3.3.2, 3.5.0.Beta-1 Reporter: Nikita D Assignee: Steve Ebersole Priority: Minor Fix For: 4.0.0.Alpha1 Starting with version 3.3, Hibernate introduced an extremely useful dialect resolution feature (http://docs.jboss.org/hibernate/stable/core/reference/en/html_single/#por...). The problem is with the configuration of a custom dialect resolver: * Setting the property Environment.DIALECT_RESOLVERS in the Configuration of a SessionFactory doesn't work, because DialectFactory only reads from Environment.getProperties(), which is only the global properties (system properties plus the hibernate.properties file). * Setting a system property programatically is not safe, because the Environment class caches the system properties in a static constant, so if it's loaded before the code that sets the system property, the property will not be picked up. * The registerDialectResolver() method on DialectFactory is not public. Ideally, it should be possible to configure a custom dialect resolver by setting the property Environment.DIALECT_RESOLVERS on a Configuration object, just as one would configure an explicit dialect. Alternatively, I think an acceptable "quick fix" would be to expose the registerDialectResolver() method on DialectFactory.