validation pattern for allowing non-empty string in xml file

I was trying to validate a xml file using xsd wherein a node value should be non-empty. Means there should be atleast one non-whitespace character into that. After lots of googling, I finally wrote up a small pattern to validate that. Here is the fragment.

Define a new type derived from string type and apply the pattern constraint.

<!– Non-empty string –>

<xs:simpleType name=NonEmptyString>

<xs:restriction base=xs:string>

<xs:minLength value=1 />

<xs:pattern value=.*[^\s].* />



Now use the new type “NonEmptyString” for all the nodes you want to enforce non-empty constraint.

<xs:element name=Name type=NonEmptyString />

Comments (3)

  1. Aharon Levine says:


    Just what I needed!

  2. valdating a element such that, it must contain a child elemet says:

    Consider a element :





    A either contain B or C or both. The only invalid condition is empty A.

  3. Kevin Q says:

    I couldn't find a way to do it without declaring a new type. Thanks, this was really the best way to do it.