XML/XML Schema/duration
using durations and define
<source lang="xml">
File: Data.xml <?xml version="1.0"?>
P4M
File: Schema.xsd
<?xml version="1.0"?> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.wbex.ru" xmlns="http://www.wbex.ru" elementFormDefault="qualified"> <xsd:element name="data" type="myDuration"/> <xsd:simpleType name="myDuration"> <xsd:restriction base="xsd:duration"> <xsd:minInclusive value="P3M" /> </xsd:restriction> </xsd:simpleType>
</xsd:schema>
</source>
xs:maxInclusive defines a maximum value that can be reached based on xs:duration
<source lang="xml">
File: Data.xml <?xml version="1.0"?>
P1M
File: Schema.xsd <?xml version="1.0"?> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.wbex.ru" xmlns="http://www.wbex.ru" elementFormDefault="qualified"> <xsd:element name="data" type="myDuration"/>
<xsd:simpleType name="myDuration"> <xsd:restriction base="xsd:duration"> <xsd:maxInclusive value="P3M" /> </xsd:restriction> </xsd:simpleType>
</xsd:schema>
</source>