CODEWITHSUNDEEP
xmldatexsdxsd-validation
Mikel
Mikel

Reputation: 21

Date formats union in XSD

I have defined the following simple type in a XSD:

<xs:simpleType name="myDateFormat">
    <xs:union memberTypes="xs:dateTime xs:date xs:gYearMonth xs:gYear"/>
</xs:simpleType>

I would like to allow YYYY, YYYY-MM, YYYY-MM-DD and full datetime formats. But after doing some testing I have realised that I don't get an error with the following values:

How can I create a type that allows only YYYY, YYYY-MM, YYYY-MM-DD and full datetime?

EDIT1: Is this a possible solution?

<xs:simpleType name="myDateFormat">
    <xs:union>
        <xs:simpleType>
            <xs:restriction base="xs:gYear">
                <xs:pattern value="\d{4}"/>
            </xs:restriction>
        </xs:simpleType>
        <xs:simpleType>
            <xs:restriction base="xs:gYearMonth">
                <xs:pattern value="\d{4}-\d{2}"/>
            </xs:restriction>
        </xs:simpleType>
        <xs:simpleType>
            <xs:restriction base="xs:date">
                <xs:pattern value="\d{4}-\d{2}-\d{2}"/>
            </xs:restriction>
        </xs:simpleType>    
        <xs:simpleType>
            <xs:restriction base="xs:dateTime">
                <xs:pattern value="\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}"/>
            </xs:restriction>
        </xs:simpleType>        
    </xs:union>
</xs:simpleType>

Upvotes: 2

Views: 950

Answers (1)

kjhughes
kjhughes

Reputation: 111491

It's the xs:gYear that's allowing the unwanted values. (It's allowing them as years with more than 4 digits.)

You can define your own year that's limited to 4 digits:

  <xs:simpleType name="gYear4">
    <xs:restriction base="xs:nonNegativeInteger">
      <xs:totalDigits value="4"/>
    </xs:restriction>
  </xs:simpleType>

And use that instead in your xs:union:

  <xs:simpleType name="myDateFormat">
    <xs:union memberTypes="xs:dateTime xs:date xs:gYearMonth gYear4"/>
  </xs:simpleType>

And then the values you want will be allowed, and the YYYY[YYYYYY] values that you do not will be prohibited, as requested.

Upvotes: 2

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