/**
* Retrieve a field.
*
* @param key field name
* @return the field (even if the field does not exist you get a field)
*/
public Field field(String key) {
// Value
String fieldValue = null;
if (data.containsKey(key)) {
fieldValue = data.get(key);
} else {
if (value.isDefined()) {
BeanWrapper beanWrapper = new BeanWrapperImpl(value.get());
beanWrapper.setAutoGrowNestedPaths(true);
String objectKey = key;
if (rootName != null && key.startsWith(rootName + ".")) {
objectKey = key.substring(rootName.length() + 1);
}
if (beanWrapper.isReadableProperty(objectKey)) {
Object oValue = beanWrapper.getPropertyValue(objectKey);
if (oValue != null) {
fieldValue =
play.data.format.Formatters.print(
beanWrapper.getPropertyTypeDescriptor(objectKey), oValue);
}
}
}
}
// Error
List<ValidationError> fieldErrors = errors.get(key);
if (fieldErrors == null) {
fieldErrors = new ArrayList<ValidationError>();
}
// Format
Tuple<String, List<Object>> format = null;
BeanWrapper beanWrapper = new BeanWrapperImpl(blankInstance());
beanWrapper.setAutoGrowNestedPaths(true);
try {
for (Annotation a : beanWrapper.getPropertyTypeDescriptor(key).getAnnotations()) {
Class<?> annotationType = a.annotationType();
if (annotationType.isAnnotationPresent(play.data.Form.Display.class)) {
play.data.Form.Display d = annotationType.getAnnotation(play.data.Form.Display.class);
if (d.name().startsWith("format.")) {
List<Object> attributes = new ArrayList<Object>();
for (String attr : d.attributes()) {
Object attrValue = null;
try {
attrValue = a.getClass().getDeclaredMethod(attr).invoke(a);
} catch (Exception e) {
}
attributes.add(attrValue);
}
format = Tuple(d.name(), attributes);
}
}
}
} catch (NullPointerException e) {
}
// Constraints
PropertyDescriptor property =
play.data.validation.Validation.getValidator()
.getConstraintsForClass(backedType)
.getConstraintsForProperty(key);
List<Tuple<String, List<Object>>> constraints = new ArrayList<Tuple<String, List<Object>>>();
if (property != null) {
constraints = Constraints.displayableConstraint(property.getConstraintDescriptors());
}
return new Field(this, key, constraints, format, fieldErrors, fieldValue);
}
/** Gets the concrete value if the submission was a success. */
public T get() {
return value.get();
}