s datatype resides in the namespace <code>http://www.w3.org/2003/11/xpath-datatypes</code>.</p>
 
 <p>A <A HREF="../../../javax/xml/datatype/DatatypeConstants.html#FIELD_UNDEFINED"><CODE>DatatypeConstants.FIELD_UNDEFINED</CODE></A> value indicates that field isnot set.</p>
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<DT><B>Parameters:</B><DD><CODE>isPositive</CODE> - Set to <code>false</code> to create a negative duration. When the length
   of the duration is zero, this parameter will be ignored.<DD><CODE>day</CODE> - Day of <code>Du