How to impose minute restrictions on xsd:dateTime?

Question

I have read that we can use minInclusive and maxInclusive restrictions on xsd:datetime fields. But how can I make sure that my dateTime field shall not occur more than 5 minutes into the future? I know how to handle it in java . But I want the validation at the schema level. Please help me.

Answer 1

This can be done using XSD 1.1. Example:

<xs:element name="myDateTime">
    <xs:simpleType>
        <xs:restriction base="xs:dateTime">
            <xs:assertion test="$value lt (current-dateTime() + xs:dayTimeDuration('PT5M'))"/>
        </xs:restriction>
    </xs:simpleType>
</xs:element>

Explantion:

current-dateTime() + xs:dayTimeDuration('PT5M') sums 5 minutes to current date.

lt stands for lower than as the character < cannot be used at that part.

$value holds the value in an XSD 1.1 assertion.

See also: xs:dayTimeDuration at XPath 2.0 specs