Examples with QuestionnaireItemEnableWhenComponent org.hl7.fhir.r4b.model.Questionnaire.QuestionnaireItemEnableWhenComponent used on opensource projects

Example 6 with QuestionnaireItemEnableWhenComponent

use of org.hl7.fhir.r4b.model.Questionnaire.QuestionnaireItemEnableWhenComponent in project org.hl7.fhir.core by hapifhir.

the class EnableWhenEvaluator method isQuestionEnabled.

/**
 * the stack contains a set of QR items that represent the tree of the QR being validated, each tagged with the definition of the item from the Q for the QR being validated
 * <p>
 * the itembeing validated is in the context of the stack. For root items, the stack is empty.
 * <p>
 * The context Questionnaire and QuestionnaireResponse are always available
 */
public boolean isQuestionEnabled(ValidatorHostContext hostContext, QuestionnaireItemComponent qitem, QStack qstack, FHIRPathEngine engine) {
    if (hasExpressionExtension(qitem)) {
        String expr = getExpression(qitem);
        ExpressionNode node = engine.parse(expr);
        return engine.evaluateToBoolean(hostContext, qstack.a, qstack.a, qstack.a, node);
    }
    if (!qitem.hasEnableWhen()) {
        return true;
    }
    List<EnableWhenResult> evaluationResults = new ArrayList<>();
    for (QuestionnaireItemEnableWhenComponent enableCondition : qitem.getEnableWhen()) {
        evaluationResults.add(evaluateCondition(enableCondition, qitem, qstack));
    }
    return checkConditionResults(evaluationResults, qitem);
}