Object-relational mapping is one of the most complex issues to address in modern application architectures.  JDX (protected by US Patent 6,163,776) provides a simple, practical and robust solution to this important problem.  JDX solves the tough problem of persistence for Java/J2EE applications by eliminating endless lines of JDBC/SQL code.

You don’t need to get bogged down with overly complex methodologies and over-arching frameworks.  JDX gives you the control you need to be an effective developer, helping you create more flexible and higher quality applications faster.

• Simple, Non-intrusive, and Flexible Design
     
• Smart and Elegant Mapping Specification
     
• Support for Complex Object Modeling including Class Hierarchies
    
• Small Set of Simple and Flexible APIs
   
• Lightweight and Optimized Mapping Engine
    
• Object Caching
    
• High-performance and Scalable Implementation
    
• Powerful and Intuitive GUI Tools (JDXStudio and JDXDemo)
    
• Nifty Components and Facilities to Simplify Development
    
• Wrorks with Most Popular Databases, Existing Schema, and Application Servers
    
• Easy-to-learn and Easy-to-use
   
• Robust and Market-Proven Technology
    
•   Affordable Pricing and Quick ROI

• Declarative mapping specifications based on simple grammar
• Human-readable and easily comprehensible; no need to struggle with complex XML files
• Compact; most default mapping is automatically deduced; avoids verbosity
• Normalized and modular specification; no repetition of the same information
• Most mapping primitives are orthogonal to each other, avoiding unnecessary tight coupling and enabling easy evolution
• Allows cross-referencing of classes and collections no matter in which order their mappings have been defined
• Intuitive and flexible ways of mapping complex object structures
• Mappings for collections and relationships are defined at the object level, not at the relational level; makes it easier to understand and modify such mappings
• A mapping specification can optionally be stored in and accessed from the database
  

• Associative and aggregated relationships
• Persistence-by-reachability
• 1-to-1, 1-to-many, and many-to-many relationships
• Multiple options to store class-hierarchy objects
• Polymorphic queries

• Flexible query options – deep, shallow, and anything in-between. Supports loading of partial objects, sophisticated query predicates (including path-expressions), named queries, and powerful object-streaming functionality.
• Aggregated operations
• Flexible APIs for Stored Procedures and
• Dynamic data routing

• Connection pooling
• Prepared statements
• Optimized SQL statements
• Minimal database trips
• Caching of metadata

• Caching options at individual class level for readonly objects to improve query performance
• Regular and LRU caches
• Cache can optionally be backed by clustered caches (e.g., Tangasol Coherence)

• Short code paths
• Optimistic concurrency control
• JDX can optionally run in server model

• Excellent packaging of all the needed functionality to simplify mapping configuration (defining and verifying OR-Mapping, creating and reverse-engineering database schema)
• Well-organized, color-coded panels for quick navigation
• Extensive online help available at every step of the way
• Easy to leverage legacy data for OR-Mapping
• Verify OR-Mapping against a live database
• OneClickRevelation™ provides instant and interactive insight into your data without a single line of programming 

• Utility components for pooling JDX handles
• Persistently unique sequence generators
• Object-viewing facilities
• Interactive development of queries using live data
• Support for instance callback methods

• Supports Oracle, SQL Server, DB2, Sybase, MySQL, Postgres, Pointbase, Interbase, JDataStore, HSQLDB, Cloudscape, Access, and JDBC data sources
• Easily reverse-engineer an object model from any existing relational schema
• Mapping-in-the-middle for existing object models and schema including stored procedures
• APIs for SQL bypass
• Works with WebLogic, Websphere, JRun, Tomcat, and other J2EE servers
• JNDI look up for data sources
• Integrates with external transaction managers
• Works with JSP, Servlets, EJBs and Standalone programs

• Clean design – not an over-engineered framework with complex semantics
• Small Set of Simple and Flexible APIs
• No learning of a new query language required
• Powerful and intuitive GUI tools
• Extensive documentation (Comprehensive user manual, Javadocs, tutorials, and online help)
• Many working examples with easy-to-configure ANT scripts
• Meaningful error and debug messages to diagnose any problem
• Optional logging of all SQL statements
  

• Progressively enhanced based on feedback from thousands of users over last 6 years
• Proven enterprise-class technology being used in real-world applications
• Great customer testimonials

• Nominal developer seat pricing without runtime royalties
• More modular and better performing applications
• Increased programmer productivity
• Reduced risks and faster time-to-market