private void ButtonPredicate_Click(object sender, RoutedEventArgs e)
{
var inputNav = GetResourceNavigator();
if (inputNav == null)
{
return;
}
// Don't need to cache this, it is cached in the fhir-client
Hl7.FhirPath.CompiledExpression xps = null;
try
{
xps = _compiler.Compile(textboxExpression.Text);
}
catch (Exception ex)
{
SetResults("Expression compilation error:\r\n" + ex.Message);
return;
}
if (xps != null)
{
try
{
bool result;
if (inputNav is stu3.Hl7.Fhir.ElementModel.PocoNavigator)
{
result = xps.Predicate(inputNav, new fp3.FhirEvaluationContext(inputNav));
}
else
{
result = xps.Predicate(inputNav, new fp2.FhirEvaluationContext(inputNav));
}
SetResults(result.ToString());
}
catch (Exception ex)
{
SetResults("Expression evaluation error:\r\n" + ex.Message);
return;
}
}
AppendParseTree();
}
private static CompiledExpression Compile(string expression)
{
var compiler = new FhirPathCompiler();
return(compiler.Compile(expression));
}
