THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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A trivial use case would be adding a replace function callable from a DPath expression. In the DFDL Schema, we might call something like the below; Where the function will return "Hello_World" if the element resolves to "Hello World".
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xmlns:sdf="com.ext.UDFunction.StringFunctions"
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dfdl:choiceDispatchKey="{ sdf:replace(xs:string(../MessageTextFormatIdentifier), ' ', '_') }" |
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Another use case would be implementing the normalization of elevation above Mean-Sea-Level (MSL) to Height-Above-Ellipsoid (HAE) for Link16F1 data. In the DFDL schema, we might call something like the below; where the functions will return the result of the conversion.
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xmlns:mhdf="http://extOther.UDFunction.ElevationConversions.com"
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dfdl:outputValueCalc="{ mhdf:convert_to_hae(../elevation, ../hae_adjustment, ../scaling_factor) }" |
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