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Freezer Persistence

Generates the Java code that implements the persistence layer

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Freezer generates the code that implements the persistence layer of your application.

The input of the proccess is a class diagram where is expressed the model with the persistent entities of your application and their relationships. A first parser transforms the diagram into XML which denotes every entity descriptor. The tool reads the descriptors and generates all the artifacts required for the persistence layer: DAO, VO (DTO), JUnit tests, and database tables.

The adventages of this strategy are: It’s easy to learn, provides good performance, and avoids writing large amount of tedious and error-prone JDBC code.


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  • Graphical Interface.
  • Easy to learn.
  • Good performance
  • Code adaptable to your needs.
  • Generates Java classes DAO and VO (DTO), and JUnit tests
  • Generates the SQL for these databases: Oracle, MySql, PostgreSQL, SQLServer, Access, Cloudscape
  • Generates also SQL for: Sybase, DB2, DB2/400, SapDB, Hipersonic, Interbase, Axion (untested)
  • Generates the HTML documentation of your database.
  • Multiplatform: Tested with Linux and Windows
  • Minimum requirements: It only requires Java JDK 1.6 or above
  • Stable: Tested during years on many projects
  • Reverse tool to build an UML diagram from an existing database


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Additional Project Details

Intended Audience

Information Technology

User Interface

Java Swing

Programming Language




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