How to use

getFieldOpt

method

in

org.opensingular.form.SIComposite

@Override
public Optional<SInstance> getFieldOpt(String path) {
  return getFieldOpt(new PathReader(path));
}

private TemplateModel getTemplateFromField(String key) {
  return getInstance().getFieldOpt(key).map(instance -> toTemplateModel(instance)).orElse(null);
}

public static <T extends Serializable> Optional<T> ofOpt(SInstance instanciaComposta, String...path) {
  if (instanciaComposta instanceof SIComposite) {
    Optional<SInstance> campoOpt = ((SIComposite) instanciaComposta).getFieldOpt(Arrays.stream(path).collect(Collectors.joining(".")));
    if (campoOpt.isPresent()) {
      SInstance campo = campoOpt.get();
      if (campo instanceof SISimple) {
        return Optional.ofNullable(Value.of((SISimple<T>) campo));
      } else if (campo instanceof SIList) {
        return Optional.ofNullable((T) ofList((SIList) campo));
      }
    }
  }
  return Optional.empty();
}

private TemplateModel getTemplateFromField(String key) {
  return getInstance().getFieldOpt(key).map(instance -> formObjectWrapper.newTemplateModel(instance, escapeContentHtml)).orElse(null);
}

private static void fromXMLSIComposite(@Nonnull SIComposite instc, @Nullable MElement xml) {
  if (xml == null) {
    return;
  }
  for (MElement xmlChild = xml.getPrimeiroFilho(); xmlChild != null; xmlChild = xmlChild.getProximoIrmao()) {
    Optional<SInstance> instcField = instc.getFieldOpt(xmlChild.getTagName());
    if (instcField.isPresent()) {
      fromXML(instcField.get(), xmlChild);
    } else {
      InternalAccess.INTERNAL.addUnreadInfo(instc, xmlChild);
    }
  }
}

/**
 * Calcula o Diff para uma instância do tipo {@link STypeComposite}. Faz chamada de diff recursiva para os
 * cada campo da lista.
 */
private static void calculateDiffComposite(DiffInfo info, SIComposite original, SIComposite newer) {
  Set<String> names = new HashSet<>();
  if (newer != null) {
    for (SType<?> newerTypeField : newer.getType().getFields()) {
      SInstance newerField = newer.getField(newerTypeField);
      SInstance originalField = null;
      if (original != null) {
        originalField = original.getFieldOpt(newerTypeField.getNameSimple()).orElse(null);
      }
      calculateDiff(info, originalField, newerField);
      names.add(newerTypeField.getNameSimple());
    }
  }
  if (original != null) {
    //noinspection Convert2streamapi
    for (SType<?> originalTypeField : original.getType().getFields()) {
      if (!names.contains(originalTypeField.getNameSimple())) {
        calculateDiff(info, original.getField(originalTypeField), null);
      }
    }
  }
}

/**
 * Calcula o Diff para uma instância do tipo {@link STypeComposite}. Faz chamada de diff recursiva para os
 * cada campo da lista.
 */
private static void calculateDiffComposite(DiffInfo info, SIComposite original, SIComposite newer) {
  Set<String> names = new HashSet<>();
  if (newer != null) {
    for (SType<?> newerTypeField : newer.getType().getFields()) {
      SInstance newerField = newer.getField(newerTypeField);
      SInstance originalField = null;
      if (original != null) {
        originalField = original.getFieldOpt(newerTypeField.getNameSimple()).orElse(null);
      }
      calculateDiff(info, originalField, newerField);
      names.add(newerTypeField.getNameSimple());
    }
  }
  if (original != null) {
    //noinspection Convert2streamapi
    for (SType<?> originalTypeField : original.getType().getFields()) {
      if (!names.contains(originalTypeField.getNameSimple())) {
        calculateDiff(info, original.getField(originalTypeField), null);
      }
    }
  }
}

SIComposite instc = (SIComposite) instance;
for(MElement xmlChild = xml.getPrimeiroFilho(); xmlChild != null; xmlChild = xmlChild.getProximoIrmao()) {
  Optional<SInstance> instcField = instc.getFieldOpt(xmlChild.getTagName());
  if (instcField.isPresent()) {
    fromXML(instcField.get(), xmlChild);