Rule based validation example

Rule based validation example

If you want to do a schematron validation, then you first need to insert the Rule based XML validation component:

    NG2Schematron0002

 

A simple schemation validation file could be this:

<schema xmlns="http://purl.oclc.org/dsdl/schematron">
    <pattern name="Print both cases">
         <rule context="/Root/Document/DocumentNo">
         <report test="floor(.) = number(.)">O.K.</report>
              <assert test="floor(.) = number(.)">A Document number is not an integer.</assert>
         </rule>
    </pattern>
</schema>


This reports the error: A Document number is not an integer, if any of the nodes with the path: /Root/Document/DocumentNo is not an integer.

This schematron file is loaded into the Library into validationRule.

 

The payload after the validation is unchanged i.e. it contains the input file, that was validated. After the validation two predefined variables are created:

RuleValidationOutcome
This variable contains the result of the validation. It can either be 'SUCCESS' or 'FAILED'. In the valid branch it contains the value 'SUCCESS' and in the Invalid branch the value is 'FAILED'.

RuleValidationReport
In both output branches this variable contains the detailed XML report of the validation. You can e.g. convert the variable to a file with the workflow component, From variable to file or save the variable to a resource. In this report you can e.g. verify what the errors and warnings were.

The subtree can e.g. contain this to report the result into the system log with the Rule based validation report to log component, and copy the validated XML file to the file system as the name: valid.xml or invalid.xml depending on the result of the validation:

    NG2Schematron0003

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