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JOXM Java Object XML Mapping. Jimmy Hua Jong-Seo Lee. Adam Dukovich Michael Huffman. Software Architecture. Object Relational Mapping (ORM). “the technique of converting records in a relational database into objects in an object-oriented programming environment.”

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Joxm java object xml mapping

JOXMJava Object XML Mapping

Jimmy Hua

Jong-Seo Lee

Adam Dukovich

Michael Huffman

Object relational mapping orm
Object Relational Mapping (ORM)

“the technique of converting records in a relational database into objects in an object-oriented programming environment.”

Patrick Connor Linskey and Marc Prud'hommeaux


  • Need not to know about database management

  • ORM is in a language familiar to programmers

  • Ease of maintenance

    Used by many companies

    such as Intuit, IBM,

    Microsoft, Google, and more.

Xml extensible markup language
XML – eXtensible Markup Language

  • Structure which contains information about the relationship of data items

  • Is semi-structured data

  • 80% of the web is semi-structure data

  • Use XPath and XQuery to access in a native XML database

Problem description
Problem Description

A Java library that can store, retrieve and query object data in a native XML database has been an important issue.

This tool will offer the efficient way of manipulating XML database in Java programming environment.

Previous attempts
Previous Attempts

  • Hibernate XML, Hyperjaxb, and JaxMe

  • No feature able to directly convert Java Object to and from XML database

  • Data are not saved as XML databases but instead as relational DBMS

  • Selection of technology never intended for use with XML databases

  • Incomplete manual, feeble code base, and poor control of XML data manipulation


  • Persistence of any Java object into a native XML database

  • ConciseAPIsfor XML database manipulation

  • Local databases through the XML:DB API

  • Persistence API for XML data binding and querying

  • Support for issuing XPath queries, returning results as typed Java objects

Implementation overview
Implementation Overview

Existing Components

  • Database - we used eXist, an open source native XML database.

  • XStream – we used this component for serializing Java objects to XML, and vice versa.

    New Components

  • JOXM - this was the part we implemented. JOXM includes the code responsible for much of the administrative aspects of the program in general.

Conclusion future work
Conclusion/Future Work

  • Our goal to create an XML equivalent to Hibernate was successful

  • Some possible future work:

    • Allow users to issue XQuery queries to the database,

    • XPath interpreter for the Hibernate Query Language (HQL)

    • Transaction management

    • Provide support for the XQuery Update Facility (XQUF)


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