private void ButtonCheckExpression_Click(object sender, RoutedEventArgs e)
{
EvaluationContext evalContext;
var inputNav = GetResourceNavigator(out evalContext);
if (inputNav == null)
{
return;
}
// Don't need to cache this, it is cached in the fhir-client
Hl7.FhirPath.Expressions.Expression expr = null;
try
{
expr = FhirPathProcessor._compiler.Parse(textboxExpression.Text);
}
catch (Exception ex)
{
SetResults("Expression compilation error:\r\n" + ex.Message, true);
return;
}
if (expr != null)
{
try
{
FhirPathProcessor.CheckExpression(inputNav, expr, AppendResults, ResetResults);
}
catch (Exception ex)
{
SetResults("Expression Check error:\r\n" + ex.Message, true);
return;
}
}
}
private ITypedElement GetResourceNavigator(out EvaluationContext evalContext)
{
string parseErrors2;
var inputNavDSTU2 = FhirPathProcessor.GetResourceNavigatorDSTU2(textboxInputXML.Text, out parseErrors2);
string parseErrors3;
var inputNavSTU3 = FhirPathProcessor.GetResourceNavigatorSTU3(textboxInputXML.Text, out parseErrors3);
string parseErrors4;
var inputNavR4 = FhirPathProcessor.GetResourceNavigatorR4(textboxInputXML.Text, out parseErrors4);
if (!string.IsNullOrEmpty(parseErrors2) || !string.IsNullOrEmpty(parseErrors3) || !string.IsNullOrEmpty(parseErrors4))
{
ResetResults();
textboxResult.AppendText(String.Join("\r\n--------------------\r\n", parseErrors2, parseErrors3, parseErrors4));
}
if (inputNavR4 != null)
{
labelR4.Visibility = Visibility.Visible;
}
else
{
labelR4.Visibility = Visibility.Collapsed;
}
if (inputNavSTU3 != null)
{
labelSTU3.Visibility = Visibility.Visible;
}
else
{
labelSTU3.Visibility = Visibility.Collapsed;
}
if (inputNavDSTU2 != null)
{
labelDSTU2.Visibility = Visibility.Visible;
}
else
{
labelDSTU2.Visibility = Visibility.Collapsed;
}
if (inputNavR4 != null)
{
evalContext = new fp4.FhirEvaluationContext(inputNavR4);
return(inputNavSTU3);
}
if (inputNavSTU3 != null)
{
evalContext = new fp3.FhirEvaluationContext(inputNavSTU3);
return(inputNavSTU3);
}
evalContext = new fp2.FhirEvaluationContext(inputNavDSTU2);
return(inputNavDSTU2);
}
private void ButtonGo_Click(object sender, RoutedEventArgs e)
{
EvaluationContext evalContext;
var inputNav = GetResourceNavigator(out evalContext);
if (inputNav == null)
{
return;
}
// Don't need to cache this, it is cached in the fhir-client
CompiledExpression xps = null;
try
{
xps = FhirPathProcessor._compiler.Compile(textboxExpression.Text);
}
catch (Exception ex)
{
SetResults("Expression compilation error:\r\n" + ex.Message);
return;
}
IEnumerable <ITypedElement> prepopulatedValues = null;
if (xps != null)
{
try
{
prepopulatedValues = xps(inputNav, evalContext);
}
catch (Exception ex)
{
SetResults("Expression evaluation error:\r\n" + ex.Message);
AppendParseTree();
return;
}
ResetResults();
try
{
FhirPathProcessor.ProcessPrepopulatedValues(prepopulatedValues, AppendXmlFramentResults, AppendResults);
}
catch (Exception ex)
{
SetResults("Processing results error:\r\n" + ex.Message);
return;
}
}
AppendParseTree();
}
private void lblJson_MouseUp(object sender, MouseButtonEventArgs e)
{
FhirPathProcessor.PretifyJson(textboxInputXML.Text, (val) => { textboxInputXML.Text = val; });
}
