execute method

  1. @override
List execute(
  1. List results,
  2. Map<String, dynamic> passed
)
override

The iterable, nested function that evaluates the entire FHIRPath expression one object at a time

Implementation

@override
List execute(List results, Map<String, dynamic> passed) => results.length == 1
    ? results
    : results.isEmpty
    ? []
    : throw FhirPathEvaluationException(
        'The List $results is only allowed to contain one '
        'item if evaluated using the .single() function',
        operation: '.single()',
        collection: results,
      );