protected FormFieldValue getFieldNullValue(final FormWidget formWidget) {
FormFieldValue fieldValue = null;
if (formWidget.getType().equals(WidgetType.CHECKBOX)) {
fieldValue = new FormFieldValue(Boolean.FALSE, Boolean.class.getName());
} else if (formWidget.getType().equals(WidgetType.LISTBOX_SIMPLE)
|| formWidget.getType().equals(WidgetType.RADIOBUTTON_GROUP)) {
if (formWidget.getAvailableValues() != null && formWidget.getAvailableValues().size() > 0) {
fieldValue =
new FormFieldValue(
formWidget.getAvailableValues().get(0).getValue(), String.class.getName());
} else {
fieldValue = new FormFieldValue("", String.class.getName());
}
} else if (formWidget.getType().equals(WidgetType.DATE)) {
String formatPattern = null;
if (formWidget.getDisplayFormat() != null && formWidget.getDisplayFormat().length() > 0) {
formatPattern = formWidget.getDisplayFormat();
} else {
formatPattern = defaultDateFormatPattern;
}
fieldValue = new FormFieldValue(null, Date.class.getName(), formatPattern);
} else if (formWidget.getType().equals(WidgetType.DURATION)) {
fieldValue = new FormFieldValue(Long.valueOf(0), Long.class.getName());
} else {
fieldValue = new FormFieldValue(null, Serializable.class.getName());
}
return fieldValue;
}
/**
* Build a field value object from the process definition
*
* @param value the value retrieved from the engine
* @param formWidget the {@link FormWidget} associated with this field value
* @return a {@link FormFieldValue} object
*/
public FormFieldValue getFieldValue(
final Object value, final FormWidget formWidget, final Locale locale) {
FormFieldValue fieldValue = null;
if (value != null) {
// deals with the types whose corresponding form fields
// input and output value is not a string
if (value instanceof Date) {
String formatPattern = null;
if (formWidget.getDisplayFormat() != null && formWidget.getDisplayFormat().length() > 0) {
formatPattern = formWidget.getDisplayFormat();
} else {
formatPattern = defaultDateFormatPattern;
}
fieldValue = new FormFieldValue((Date) value, Date.class.getName(), formatPattern);
} else if (value instanceof Collection<?>) {
// perform several levels of toString on the items of the collection
fieldValue =
new FormFieldValue(
(Serializable) processCollectionValue(value), Collection.class.getName());
} else if (value instanceof String && formWidget.getType().equals(WidgetType.DATE)) {
final String valueStr = (String) value;
String formatPattern = null;
if (formWidget.getDisplayFormat() != null && formWidget.getDisplayFormat().length() > 0) {
formatPattern = formWidget.getDisplayFormat();
} else {
formatPattern = defaultDateFormatPattern;
}
Date dateValue = null;
if (valueStr.length() > 0) {
try {
final DateFormat dateFormat = new SimpleDateFormat(formatPattern, locale);
dateValue = dateFormat.parse(valueStr);
} catch (final ParseException e) {
if (LOGGER.isLoggable(Level.SEVERE)) {
LOGGER.log(
Level.SEVERE,
"The initial value for widget "
+ formWidget.getId()
+ " is not consistent with the pattern "
+ formatPattern,
e);
}
}
}
fieldValue = new FormFieldValue(dateValue, Date.class.getName(), formatPattern);
} else if (value instanceof String && formWidget.getType().equals(WidgetType.CHECKBOX)) {
Boolean booleanValue = null;
try {
booleanValue = Boolean.parseBoolean((String) value);
} catch (final Exception e) {
if (LOGGER.isLoggable(Level.SEVERE)) {
LOGGER.log(
Level.SEVERE,
"The initial value for widget "
+ formWidget.getId()
+ " is not consistent with a boolean.",
e);
}
booleanValue = Boolean.valueOf(false);
}
fieldValue = new FormFieldValue(booleanValue, Boolean.class.getName());
} else if (value instanceof Serializable) {
fieldValue = new FormFieldValue((Serializable) value, value.getClass().getName());
} else {
fieldValue = new FormFieldValue(value.toString(), String.class.getName());
}
} else {
fieldValue = getFieldNullValue(formWidget);
}
return fieldValue;
}