xs:pattern defines a pattern that must be matched by the lexical value of the datatype:
<?xml version="1.0"?> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.java2s.com" xmlns="http://www.java2s.com" elementFormDefault="qualified"> <xsd:simpleType name="nonScientific"> <xsd:restriction base="xsd:float"> <xsd:pattern value="[^eE]*" /> </xsd:restriction> </xsd:simpleType> <xsd:simpleType name="noLeading0"> <xsd:restriction base="xsd:float"> <xsd:pattern value="[^0].*" /> </xsd:restriction> </xsd:simpleType> </xsd:schema>