How to use

clearInstance

method

in

org.opensingular.form.SInstance

  public void fromRelationalColumn(Object dbData, SInstance toInstance) {
    if (dbData == null) {
      toInstance.clearInstance();
    } else {
      toInstance.setValue(dbData.toString());
    }
  }
}

public static void restoreState(final SInstance instance, final FormState state) {
  instance.clearInstance();
  hydrate(instance, state.value);
}

public static void restoreState(final SInstance instance, final FormState state) {
  instance.clearInstance();
  hydrate(instance, state.value);
}

@Override
@SuppressWarnings({ "unchecked", "rawtypes" })
public void setObject(T object) {
  SInstance target = getTarget();
  if (target instanceof SIList) {
    target.clearInstance();
    ((List) object).forEach(((SIList) target)::addValue);
  } else {
    target.setValue(object);
  }
}

@Override
@SuppressWarnings({ "unchecked", "rawtypes" })
public void setObject(T object) {
  SInstance target = getTarget();
  if (target instanceof SIList) {
    target.clearInstance();
    ((List) object).forEach(((SIList) target)::addValue);
  } else {
    target.setValue(object);
  }
}

/** Copia os valores de uma instância para outra. Presupõem que as instâncias são do mesmo tipo. */
public static void copyValues(SInstance origin, SInstance target) {
  target.clearInstance();
  hydrate(target, dehydrate(origin));
}

/** Copia os valores de uma instância para outra. Presupõem que as instâncias são do mesmo tipo. */
public static void copyValues(SInstance origin, SInstance target) {
  target.clearInstance();
  hydrate(target, dehydrate(origin));
}

        @Override
        protected void onSubmit(AjaxRequestTarget target, Form<?> form) {
          filterPanel.getInstanceModel().getObject().clearInstance();
          form.clearInput();
//                    filterPanel.getInstanceModel().getObject().init();
          target.add(filterPanel);
        }
      };

  public void fromRelationalColumn(Object dbData, SInstance toInstance) {
    if (dbData == null) {
      toInstance.clearInstance();
      return;
    }
    try {
      Blob blob = (Blob) dbData;
      File tempFile = File.createTempFile("blob_" + toInstance.getName(), null);
      tempFile.deleteOnExit();
      try (InputStream input = blob.getBinaryStream(); FileOutputStream output = new FileOutputStream(tempFile)) {
        IOUtils.copy(input, output);
      }
      ((SIAttachment) toInstance).setContent(tempFile.getName(), tempFile, blob.length(),
          HashUtil.toSHA1Base16(tempFile));
    } catch (Exception e) {
      throw SingularException.rethrow("Error on converting BLOB data to SInstance", e);
    }
  }
}

@SuppressWarnings("unchecked")
public void collectSelectedInstances(SInstance instance, List<Serializable> values, SInstanceConverter converter,
                   List<Object> ids, IFunction<Object, Object> idFunction,
                   List<SInstance> selectedInstances) {
  for (int i = 0; i < selectedInstances.size(); i += 1) {
    SInstance          ins       = selectedInstances.get(i);
    final Serializable converted = converter.toObject(ins);
    if (converted != null && !ids.contains(idFunction.apply(converted))) {
      if (!enableDanglingValues) {
        if(instance instanceof SIList){
          ((SIList) instance).remove(ins);
        } else {
          instance.clearInstance();
        }
      } else {
        values.add(i, converted);
      }
    }
  }
}

@Override
public void setObject(String key) {
  if (StringUtils.isEmpty(key)) {
    getRequestCycle().setMetaData(WicketFormProcessing.MDK_SKIP_VALIDATION_ON_REQUEST, true);
    getMInstancia().clearInstance();
  } else {
    final Serializable val = getValueFromChace(key).map(TypeaheadCache::getTrueValue).orElse(getValueFromProvider(key).orElse(null));
    if (val != null) {
      instance().asAtrProvider().getConverter().fillInstance(getMInstancia(), val);
    } else {
      getMInstancia().clearInstance();
    }
  }
}

private static void fromXML(@Nonnull SInstance instance, @Nullable MElement xml) {
  if (xml == null)
    return; // Não precisa fazer nada
  instance.clearInstance();
  readAttributes(instance, xml);
  if (instance instanceof SISimple) {
    fromXMLSISImple((SISimple<?>) instance, xml);
  } else if (instance instanceof SIComposite) {
    fromXMLSIComposite((SIComposite) instance, xml);
  } else if (instance instanceof SIList) {
    fromXMLSIList((SIList<?>) instance, xml);
  } else {
    throw new SingularFormException(
        "Conversão não implementando para a classe " + instance.getClass().getName(), instance);
  }
}

public void updateExists() {
  SInstances.updateBooleanAttribute(this, SPackageBasic.ATR_EXISTS, SPackageBasic.ATR_EXISTS_FUNCTION);
  if (!exists())
    SInstances.visitPostOrder(this, (i, v) -> i.clearInstance());
}

protected void setVallIfNullorClear(String key, SInstance instance) {
  final Serializable val = getValueFromChace(key).map(TypeaheadCache::getTrueValue).orElse(getValueFromProvider(key).orElse(null));
  if (val != null) {
    instance().asAtrProvider().getConverter().fillInstance(instance, val);
  } else {
    instance.clearInstance();
  }
}

public void updateExists() {
  SInstances.updateBooleanAttribute(this, SPackageBasic.ATR_EXISTS, SPackageBasic.ATR_EXISTS_FUNCTION);
  if (!exists())
    SInstances.visitPostOrder(this, (i, v) -> i.clearInstance());
}

  @Override
  public void setObject(String key) {
    if (StringUtils.isEmpty(key)) {
      getRequestCycle().setMetaData(WicketFormProcessing.MDK_SKIP_VALIDATION_ON_REQUEST, Boolean.TRUE);
      getSInstance().clearInstance();
    } else {
      setVallIfNullorClear(key, getSInstance());
    }
  }
};

private void clearInput(AjaxRequestTarget target) {
  getModal().hide(target);
  valueModel.getSInstance().clearInstance();
  target.add(valueField);
  valueField.getBehaviors(AjaxUpdateInputBehavior.class)
      .forEach(ajax -> ajax.onUpdate(target));
}

@Override
public void setObject(Serializable object) {
  SInstance instance = getSInstance();
  if (object == null) {
    instance.clearInstance();
  } else {
    Optional<SInstanceConverter> converter = resolver.apply(instance);
    if (converter.isPresent()) {
      converter.get().fillInstance(instance, object);
    } else if (instance instanceof SIComposite) {
      throw new SingularFormException("Nenhum converter foi informado para o tipo " + instance.getName(),
          instance);
    } else {
      instance.setValue(object);
    }
  }
}

@Override
public void setObject(Serializable object) {
  SInstance instance = getMInstancia();
  if (object == null) {
    instance.clearInstance();
  } else {
    Optional<SInstanceConverter> converter = resolver.apply(instance);
    if (converter.isPresent()) {
      converter.get().fillInstance(instance, object);
    } else if (instance instanceof SIComposite) {
      throw new SingularFormException("Nenhum converter foi informado para o tipo " + instance.getName(),
          instance);
    } else {
      instance.setValue(object);
    }
  }
}

/**
 * Configura os valores contidos em value na MInstancia passara como
 * parametro recursivamente. Usualmente content é o retorno do metodo
 * dehydrate.
 */
public static void hydrate(SInstance instance, Content content) {
  if (instance != null) {
    if (instance instanceof SIComposite) {
      fromMap((Map<String, Content>) content.getRawContent(), (SIComposite) instance);
    } else if (instance instanceof SISimple) {
      if (content.getRawContent() == null) {
        instance.clearInstance();
      } else {
        instance.setValue(content.getRawContent());
      }
    } else if (instance instanceof SIList) {
      fromList((List<Content>) content.getRawContent(), (SIList) instance);
    } else {
      throw new SingularFormException("Tipo de instancia não suportado: " + instance.getClass().getName(), instance);
    }
  }
}