@SuppressWarnings("unchecked")
protected Map convertToTypedMap(
Map original, String propertyName, Class requiredType, TypeDescriptor typeDescriptor) {
boolean originalAllowed = requiredType.isInstance(original);
if (!originalAllowed && !Map.class.isAssignableFrom(requiredType)) {
return original;
}
Class keyType = null;
Class valueType = null;
MethodParameter methodParam = typeDescriptor.getMethodParameter();
if (methodParam != null) {
keyType = GenericCollectionTypeResolver.getMapKeyParameterType(methodParam);
valueType = GenericCollectionTypeResolver.getMapValueParameterType(methodParam);
}
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 convertedCopy;
try {
if (CollectionFactory.isApproximableMapType(requiredType)) {
convertedCopy = CollectionFactory.createApproximateMap(original, original.size());
} else {
convertedCopy = (Map) 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);
if (methodParam != null) {
methodParam.increaseNestingLevel();
methodParam.setTypeIndexForCurrentLevel(0);
}
Object convertedKey =
convertIfNecessary(keyedPropertyName, null, key, keyType, typeDescriptor);
if (methodParam != null) {
methodParam.setTypeIndexForCurrentLevel(1);
}
Object convertedValue =
convertIfNecessary(keyedPropertyName, null, value, valueType, typeDescriptor);
if (methodParam != null) {
methodParam.decreaseNestingLevel();
}
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 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);
}