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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
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<title>JiBX: Binding XML to Java Code</title>
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<td><h1>JiBX: Binding XML to Java Code</h1>
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<div>
<strong>JiBX Basics</strong>
<div>
<small>
<span class="menu-selection">Overview</span>
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<small>
<a href="flexibility.html">Flexibility</a>
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<a href="performance.html">Performance</a>
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<a href="clean-code.html">Clean code</a>
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<a href="start.html">Getting Started</a>
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<a href="tutorial/binding-tutorial.html">Binding Tutorial</a>
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<a href="tutorial/binding-start.html">A basic binding</a>
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<a href="tutorial/binding-extras.html">Binding extras</a>
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<a href="tutorial/binding-structures.html">Structure mapping</a>
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<a href="tutorial/binding-collects.html">Collections</a>
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<small>
<a href="tutorial/binding-mappings.html">Using mappings</a>
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<a href="tutorial/binding-advanced.html">Advanced binding</a>
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<a href="tutorial/binding-extend.html">Method hooks</a>
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<a href="tutorial/binding-custom.html">Custom code</a>
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<a href="runtime.html">Runtime</a>
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<a href="extras.html">JiBX Extras</a>
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<a href="building.html">Building JiBX</a>
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<a href="schema.html">Schema Compatibility</a>
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<a href="jibx-license.html">License</a>
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<strong>Binding Definition</strong>
<div>
<small>
<a href="details/binding-overview.html">Definition details</a>
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<a href="details/contexts.html">Definition contexts</a>
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<a href="details/conversions.html">Conversions</a>
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<small>
<a href="details/xml-summary.html">XML summary</a>
</small>
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<small>
<a href="details/binding-element.html"><binding> element</a>
</small>
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<small>
<a href="details/include-element.html"><include> element</a>
</small>
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<small>
<a href="details/format-element.html"><format> element</a>
</small>
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<small>
<a href="details/namespace-element.html"><namespace> element</a>
</small>
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<small>
<a href="details/mapping-element.html"><mapping> element</a>
</small>
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<small>
<a href="details/value-element.html"><value> element</a>
</small>
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<small>
<a href="details/structure-element.html"><structure> element</a>
</small>
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<small>
<a href="details/collection-element.html"><collection> element</a>
</small>
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<div>
<small>
<a href="details/binding-attributes.html">Attribute groups</a>
</small>
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</div>
</div>
<div>
<strong>Usage API</strong>
<div>
<small>
<a href="./api/index.html">Runtime JavaDocs</a>
</small>
</div>
</div>
<div>
<strong>Subprojects</strong>
<div>
<small>
<a href="jibxtools/index.html">Generator Tools</a>
</small>
</div>
<div>
<small>
<a href="jibxsoap/index.html">JibxSoap</a>
</small>
</div>
<div>
<small>
<a href="siteamatic/index.html">SiteAMatic</a>
</small>
</div>
<div>
<small>
<a href="xsd2jibx/index.html">Xsd2Jibx</a>
</small>
</div>
</div>
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</td>
<td>
<div id="bodycol">
<div class="app">
<div class="h3">
<h3><a name="jibx-intro">What is JiBX?</a></h3>
<p>JiBX is a framework for binding XML data to Java objects. It
lets you work with data from XML documents using your own class
structures. The JiBX framework handles all the details of converting
your data to and from XML based on your instructions. JiBX is designed
to perform the translation between internal data structures and XML with
very high efficiency, but still allows you a high degree of control
over the translation process.</p>
<p>How does it manage this? JiBX uses <a href="tutorial/binding-tutorial.html"><i>binding
definition</i></a>
documents to define the rules for how your Java objects are converted to
or from XML (the <em>binding</em>). At some point after you've compiled
your source code into class files you execute the first part of the
JiBX framework, the <a href="bindcomp.html"><i>binding compiler</i></a>. This compiler enhances
binary class files produced by the Java compiler, adding code to handle
converting instances of the classes to or from XML. After running the
binding compiler you can continue the normal steps you take in assembling your
application (such as building jar files, etc.). You can also skip the binding
compiler as a separate step and instead bind classes
<a href="bindonload.html">directly at runtime</a>, though this approach has some
drawbacks.</p>
<p>The second part of the JiBX framework is the <a href="runtime.html"><i>binding
runtime</i></a>. The enhanced class files generated by the binding
compiler use this runtime component both for actually building objects
from an XML input document (called <i>unmarshalling</i>, in data
binding terms) and for generating an XML output document from objects
(called <i>marshalling</i>). The runtime uses a parser implementing
the XMLPull API for handling input documents, but is otherwise
self-contained.</p>
<p>This approach gives several important benefits:</p>
<ol>
<li><a href="flexibility.html">Flexibility</a> - Use any class structure you want, so long as
you can tell JiBX how to translate it to and from XML.</li>
<li><a href="performance.html">Performance</a> - Pull parsing and class file enhancement
techniques let JiBX build high-performance marshalling and
unmarshalling code directly into your classes.</li>
<li><a href="clean-code.html">Clean code</a> - You write the code and JiBX works with it, not
the other way around!</li>
</ol>
<p>For an outside opinion of how JiBX performance stacks up against other Java
XML serialization and data binding frameworks, you can view the results of the
<a href="https://bindmark.dev.java.net/">BindMark</a> tests, along with a
similar study focused around
<a href="http://webservices.sys-con.com/read/114130.htm">Web services
performance.</a>.</p>
<p>You can also see the earlier performance study by JiBX author Dennis Sosnoski,
<a href="http://www.ibm.com/developerworks/library/x-databdopt2/">Data
Binding, Part 2: Performance</a>, on the IBM developerWorks XML Zone. Besides
these performance issues, Dennis has also covered the
<a href="http://www.ibm.com/developerworks/java/library/j-cwt09065/index.html">JiBX 1.X code generation architecture</a>, and
several aspects of the JiBX 2.0 design, in his developerWorks
<a href="http://www.ibm.com/developerworks/views/java/libraryview.jsp?search_by=classworking%20toolkit:">Java
Classworking Toolkit</a> column.</p>
</div>
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<div id="footer">
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<td> © 2003-2005, Dennis M. Sosnoski (<a href="http://www.sosnoski.com">Sosnoski Software Solutions, Inc.</a>).
Licensed to the JiBX Project for free distribution and use. </td>
</tr>
</tbody>
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