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" Should you need to compile an OT/J program outside the OTDT, the following steps should enable you to use ANT for this task: download ecotj.jar you'll always find the latest version here in the column "Command Line Compiler" add it to your ANT runtime classpath (either place it in your ant_lib directory or provide the path by a -lib command line option to ant). in your build.xml set the property build.compiler to use the OTDT compiler in tasks, like that: "

DdlUtils is a small, easy-to-use component for working with Database Definition (DDL) files. These are XML files that contain the definition of a database schema, e.g. tables and columns. These files can be fed into DdlUtils via its Ant task or programmatically in order to create the corresponding database or alter it so that it corresponds to the DDL. Likewise, DdlUtils can generate a DDL file for an existing database. DdlUtils uses the Turbine XML format, which is shared by Torque and OJB. This format expresses the database schema in a database-independent way by using JDBC datatypes instead of raw SQL datatypes which are inherently database specific. An example of such a file is:

Sample of using Hibernate Annotations by reducing XML configuration files thus making it simpler to define required metadata directly into our Java code. When using annotations, we no longer need the additional mapping file (*.hbm.xml). The metadata for the ORM is specified in the individual classes.