<html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Jing support for XML Schema Datatypes</title> </head> <body> <h1>Jing support for XML Schema Datatypes</h1> <p>Jing contains a built-in implementation of the W3C <a href="http://www.w3.org/TR/xmlschema-2/">XML Schema Part 2</a> Recommendation. Jing follows the <a href="http://www.oasis-open.org/committees/relax-ng/xsd.html">Guidelines for using W3C XML Schema Datatypes with RELAX NG</a>.</p> <p>The implementation of the <code>pattern</code> facet (and of some of the more complicated datatypes) requires an implementation of regular expressions as defined in <a href="http://www.w3.org/TR/xmlschema-2/#regexs">XML Schema Part 2</a>. Jing provides implementations based on:</p> <ul> <li>the standard Java <code>java.util.regex</code> package (included in Java in versions 1.4 and later)</li> <li><a href="http://xml.apache.org/xerces2-j/index.html">Xerces2-J</a></li> </ul> <p>Jing will automatically use the first of the above implementations for which the necessary classes are available on your CLASSPATH.</p> <p>You can interface a different implementation of XML Schema regular expressions by implementing the interface <code>com.thaiopensource.datatype.xsd.RegexEngine</code>. Jing finds an implementation of this interface using the service provider technique: a JAR file containing an implementation of this interface must contain a file <code>META-INF/services/com.thaiopensource.datatype.xsd.RegexEngine</code> that contains the name of class that implements the interface. Jing will automatically find and use the implementation if the JAR file is added to the CLASSPATH.</p> </body> </html>
