This chapter describes the Kodo configuration framework. It concludes with descriptions of all the configuration properties recognized by Kodo. You may want to browse these properties now, but it is not necessary. Most of them will be referenced later in the documentation as we explain the various features they apply to.

Kodo EJB/JDO supports both EJB persistence and JDO configuration styles. EJB persistence utilizes the XML format described in Section 6.1, “persistence.xml” of the EJB Persistence Overview. JDO uses standard Java properties files. Specify your Kodo configuration options in the format native to the specification you are working with. If you are working with both EJB and JDO in the same application, use the configuration format of the specification you use most. EJB persistence and JDO have different standard settings for many properties - for example, EJB persistence looks for entity metadata in annotations, while JDO looks for metadata in .jdo files. The format of you configuration files determines Kodo's default values for these specification-dependent settings.

	Note
	You can explicitly declare specification-dependent settings such that a JDO properties file configures Kodo for EJB defaults, or an EJB XML file configures Kodo for JDO defaults. However, it is more robust to use the configuration format native to the desired specification.