CODEWITHSUNDEEP
xmlxsdxsd-validation
HUD
HUD

Reputation: 13

Custom XSD simple type to accept date or dateTime

I have an XML element

<ManufactureDate>20150316</ManufactureDate>

that uses a custom date type element,

<xs:simpleType name="CustomDate">
    <xs:restriction base="xs:string">
       <xs:maxLength value="8"/>
       <xs:whiteSpace value="collapse"/>
       <xs:pattern value="\d*"/>
    </xs:restriction>
/xs:simpleType>

for validation, but now I want another element to have the same CustomDate datatype but to give an input with time like below

<ExpirationDate>20150316T15:53:00</ExpirationDate>

Does anyone know how I can change the simpleType to accept both types of formats?

Upvotes: 1

Views: 2181

Answers (4)

mstaal
mstaal

Reputation: 630

As an addition to the solution proposed by @har07, I will propose the following:

<?xml version="1.0" encoding="utf-8"?>
<xs:schema attributeFormDefault="unqualified"
           elementFormDefault="qualified"
           xmlns:xs="http://www.w3.org/2001/XMLSchema"
           xml:lang="DA">
  <xs:element name="myDateTime" type="CustomDateTime" />
  <xs:simpleType name="DateType">
    <xs:restriction base="xs:date" >
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name="DateTimeType">
    <xs:restriction base="xs:dateTime" >
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name="CustomDateTime">
    <xs:union memberTypes="DateType DateTimeType"/>
  </xs:simpleType>
</xs:schema>

It uses the standard XSD date and dateTime formats, which I suspect would be the most standard thing to do rather than to invent a new format. I even think this should work:

<?xml version="1.0" encoding="utf-8"?>
<xs:schema attributeFormDefault="unqualified"
           elementFormDefault="qualified"
           xmlns:xs="http://www.w3.org/2001/XMLSchema"
           xml:lang="DA">
  <xs:element name="SlutDato" type="CustomDateTime" />
  <xs:simpleType name="CustomDateTime">
    <xs:union memberTypes="xs:dateTime xs:date"/>
  </xs:simpleType>
</xs:schema>

Upvotes: 0

HUD
HUD

Reputation: 13

Thanks for all the replies. I could solve this by changing the pattern.

I just used <xs:pattern value="(\d*)|(\d*T\d{2}:\d{2}:\d{2})"/> to make it work.

it just didn't work for me before since I had missed the parenthesis earlier.

Thanks

Upvotes: 0

har07
har07

Reputation: 89325

One possible way is to create another simpleType for custom date that comes with time based on your CustomDate type definition :

<xs:simpleType name="CustomDateTime">
    <xs:restriction base="xs:string">
       <xs:maxLength value="17"/>
       <xs:whiteSpace value="collapse"/>
       <xs:pattern value="\d*T\d\d:\d\d:\d\d"/>
    </xs:restriction>
</xs:simpleType>

then you can use xs:union to accept both of the custom types, like so :

<xs:simpleType name="CustomDateOrDateTime">
     <xs:union memberTypes="CustomDate CustomDateTime"/>
</xs:simpleType>

There are several other routes you can take, f.e change the regex pattern to accept both date with time and without time. Though, I don't know the exact requirement, i.e whether changing maxLength restriction acceptable or not, etc.

Upvotes: 1

kjhughes
kjhughes

Reputation: 111726

I like @har07's idea to use xs:union, but if you really want to modify your existing CustomDate directly to accept an optional time component, you could use this:

<xs:simpleType name="CustomDate">
  <xs:restriction base="xs:string">
    <xs:whiteSpace value="collapse"/>
    <xs:pattern value="\d{8}(T\d\d(:\d\d){2})?"/>
  </xs:restriction>
</xs:simpleType>

Be aware that these regexp-based constraints only lexically approximate date and time datatypes. For example, where xs:date would prohibit months greater than 12, these patterns would accept them.

Upvotes: 1

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