XML/XML Schema/decimal

A decimal when lexical space is limited to "1" and "1.5,"

   <source lang="xml">

File: Data.xml <?xml version="1.0"?>

  1    

File: Schema.xsd <?xml version="1.0"?> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"

 targetNamespace="http://www.wbex.ru" xmlns="http://www.wbex.ru"
 elementFormDefault="qualified">
 
 <xs:element name="data" type="myDecimal"/>
 
 <xs:simpleType name="myDecimal">
   <xs:restriction base="xs:decimal">
     <xs:pattern value="1" />
     <xs:pattern value="1\.5" />
   </xs:restriction>
 </xs:simpleType>

</xs:schema>

</source>