@SuppressWarnings("unchecked")
private Map<?, ?> convertToTypedMap(
Map<?, ?> original,
String propertyName,
Class<?> requiredType,
TypeDescriptor typeDescriptor) {
if (!Map.class.isAssignableFrom(requiredType)) {
return original;
}
boolean approximable = CollectionFactory.isApproximableMapType(requiredType);
if (!approximable && !canCreateCopy(requiredType)) {
if (logger.isDebugEnabled()) {
logger.debug(
"Custom Map type ["
+ original.getClass().getName()
+ "] does not allow for creating a copy - injecting original Map as-is");
}
return original;
}
boolean originalAllowed = requiredType.isInstance(original);
TypeDescriptor keyType = typeDescriptor.getMapKeyTypeDescriptor();
TypeDescriptor valueType = typeDescriptor.getMapValueTypeDescriptor();
if (keyType == null
&& valueType == null
&& originalAllowed
&& !this.propertyEditorRegistry.hasCustomEditorForElement(null, propertyName)) {
return original;
}
Iterator<?> it;
try {
it = original.entrySet().iterator();
if (it == null) {
if (logger.isDebugEnabled()) {
logger.debug(
"Map of type ["
+ original.getClass().getName()
+ "] returned null Iterator - injecting original Map as-is");
}
return original;
}
} catch (Throwable ex) {
if (logger.isDebugEnabled()) {
logger.debug(
"Cannot access Map of type ["
+ original.getClass().getName()
+ "] - injecting original Map as-is: "
+ ex);
}
return original;
}
Map<Object, Object> convertedCopy;
try {
if (approximable) {
convertedCopy = CollectionFactory.createApproximateMap(original, original.size());
} else {
convertedCopy =
(Map<Object, Object>) ReflectionUtils.accessibleConstructor(requiredType).newInstance();
}
} catch (Throwable ex) {
if (logger.isDebugEnabled()) {
logger.debug(
"Cannot create copy of Map type ["
+ original.getClass().getName()
+ "] - injecting original Map as-is: "
+ ex);
}
return original;
}
while (it.hasNext()) {
Map.Entry<?, ?> entry = (Map.Entry<?, ?>) it.next();
Object key = entry.getKey();
Object value = entry.getValue();
String keyedPropertyName = buildKeyedPropertyName(propertyName, key);
Object convertedKey =
convertIfNecessary(
keyedPropertyName, null, key, (keyType != null ? keyType.getType() : null), keyType);
Object convertedValue =
convertIfNecessary(
keyedPropertyName,
null,
value,
(valueType != null ? valueType.getType() : null),
valueType);
try {
convertedCopy.put(convertedKey, convertedValue);
} catch (Throwable ex) {
if (logger.isDebugEnabled()) {
logger.debug(
"Map type ["
+ original.getClass().getName()
+ "] seems to be read-only - injecting original Map as-is: "
+ ex);
}
return original;
}
originalAllowed = originalAllowed && (key == convertedKey) && (value == convertedValue);
}
return (originalAllowed ? original : convertedCopy);
}
@SuppressWarnings("unchecked")
private Collection<?> convertToTypedCollection(
Collection<?> original,
String propertyName,
Class<?> requiredType,
TypeDescriptor typeDescriptor) {
if (!Collection.class.isAssignableFrom(requiredType)) {
return original;
}
boolean approximable = CollectionFactory.isApproximableCollectionType(requiredType);
if (!approximable && !canCreateCopy(requiredType)) {
if (logger.isDebugEnabled()) {
logger.debug(
"Custom Collection type ["
+ original.getClass().getName()
+ "] does not allow for creating a copy - injecting original Collection as-is");
}
return original;
}
boolean originalAllowed = requiredType.isInstance(original);
TypeDescriptor elementType = typeDescriptor.getElementTypeDescriptor();
if (elementType == null
&& originalAllowed
&& !this.propertyEditorRegistry.hasCustomEditorForElement(null, propertyName)) {
return original;
}
Iterator<?> it;
try {
it = original.iterator();
if (it == null) {
if (logger.isDebugEnabled()) {
logger.debug(
"Collection of type ["
+ original.getClass().getName()
+ "] returned null Iterator - injecting original Collection as-is");
}
return original;
}
} catch (Throwable ex) {
if (logger.isDebugEnabled()) {
logger.debug(
"Cannot access Collection of type ["
+ original.getClass().getName()
+ "] - injecting original Collection as-is: "
+ ex);
}
return original;
}
Collection<Object> convertedCopy;
try {
if (approximable) {
convertedCopy = CollectionFactory.createApproximateCollection(original, original.size());
} else {
convertedCopy =
(Collection<Object>) ReflectionUtils.accessibleConstructor(requiredType).newInstance();
}
} catch (Throwable ex) {
if (logger.isDebugEnabled()) {
logger.debug(
"Cannot create copy of Collection type ["
+ original.getClass().getName()
+ "] - injecting original Collection as-is: "
+ ex);
}
return original;
}
int i = 0;
for (; it.hasNext(); i++) {
Object element = it.next();
String indexedPropertyName = buildIndexedPropertyName(propertyName, i);
Object convertedElement =
convertIfNecessary(
indexedPropertyName,
null,
element,
(elementType != null ? elementType.getType() : null),
elementType);
try {
convertedCopy.add(convertedElement);
} catch (Throwable ex) {
if (logger.isDebugEnabled()) {
logger.debug(
"Collection type ["
+ original.getClass().getName()
+ "] seems to be read-only - injecting original Collection as-is: "
+ ex);
}
return original;
}
originalAllowed = originalAllowed && (element == convertedElement);
}
return (originalAllowed ? original : convertedCopy);
}