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optimized debug logging in case of non-convertible collection (SPR-8499)

This commit is contained in:
Juergen Hoeller 2011-07-04 09:43:08 +00:00
parent df8e9b3393
commit 57998293c8
1 changed files with 44 additions and 16 deletions
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60
org.springframework.beans/src/main/java/org/springframework/beans/TypeConverterDelegate.java
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@ -20,6 +20,7 @@ import java.beans.PropertyEditor;
import java.lang.reflect.Array;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
@ -461,10 +462,20 @@ class TypeConverterDelegate {
protected Collection convertToTypedCollection(
Collection original, String propertyName, Class requiredType, TypeDescriptor typeDescriptor) {
boolean originalAllowed = requiredType.isInstance(original);
if (!originalAllowed && !Collection.class.isAssignableFrom(requiredType)) {
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 = typeDescriptor.narrow(original);
TypeDescriptor elementType = typeDescriptor.getElementTypeDescriptor();
if (elementType == null && originalAllowed &&
@ -486,14 +497,14 @@ class TypeConverterDelegate {
catch (Throwable ex) {
if (logger.isDebugEnabled()) {
logger.debug("Cannot access Collection of type [" + original.getClass().getName() +
"] - injecting original Collection as-is", ex);
"] - injecting original Collection as-is: " + ex);
}
return original;
}
Collection convertedCopy;
try {
if (CollectionFactory.isApproximableCollectionType(requiredType)) {
if (approximable) {
convertedCopy = CollectionFactory.createApproximateCollection(original, original.size());
}
else {
@ -503,7 +514,7 @@ class TypeConverterDelegate {
catch (Throwable ex) {
if (logger.isDebugEnabled()) {
logger.debug("Cannot create copy of Collection type [" + original.getClass().getName() +
"] - injecting original Collection as-is", ex);
"] - injecting original Collection as-is: " + ex);
}
return original;
}
@ -512,15 +523,15 @@ class TypeConverterDelegate {
for (; it.hasNext(); i++) {
Object element = it.next();
String indexedPropertyName = buildIndexedPropertyName(propertyName, i);
Object convertedElement = convertIfNecessary(
indexedPropertyName, null, element, elementType != null ? elementType.getType() : null , typeDescriptor.getElementTypeDescriptor());
Object convertedElement = convertIfNecessary(indexedPropertyName, null, element,
(elementType != null ? elementType.getType() : null) , typeDescriptor.getElementTypeDescriptor());
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);
"] seems to be read-only - injecting original Collection as-is: " + ex);
}
return original;
}
@ -533,10 +544,20 @@ class TypeConverterDelegate {
protected Map convertToTypedMap(
Map original, String propertyName, Class requiredType, TypeDescriptor typeDescriptor) {
boolean originalAllowed = requiredType.isInstance(original);
if (!originalAllowed && !Map.class.isAssignableFrom(requiredType)) {
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 = typeDescriptor.narrow(original);
TypeDescriptor keyType = typeDescriptor.getMapKeyTypeDescriptor();
TypeDescriptor valueType = typeDescriptor.getMapValueTypeDescriptor();
@ -559,14 +580,14 @@ class TypeConverterDelegate {
catch (Throwable ex) {
if (logger.isDebugEnabled()) {
logger.debug("Cannot access Map of type [" + original.getClass().getName() +
"] - injecting original Map as-is", ex);
"] - injecting original Map as-is: " + ex);
}
return original;
}
Map convertedCopy;
try {
if (CollectionFactory.isApproximableMapType(requiredType)) {
if (approximable) {
convertedCopy = CollectionFactory.createApproximateMap(original, original.size());
}
else {
@ -576,7 +597,7 @@ class TypeConverterDelegate {
catch (Throwable ex) {
if (logger.isDebugEnabled()) {
logger.debug("Cannot create copy of Map type [" + original.getClass().getName() +
"] - injecting original Map as-is", ex);
"] - injecting original Map as-is: " + ex);
}
return original;
}
@ -586,15 +607,17 @@ class TypeConverterDelegate {
Object key = entry.getKey();
Object value = entry.getValue();
String keyedPropertyName = buildKeyedPropertyName(propertyName, key);
Object convertedKey = convertIfNecessary(keyedPropertyName, null, key, keyType != null ? keyType.getType() : null, typeDescriptor.getMapKeyTypeDescriptor());
Object convertedValue = convertIfNecessary(keyedPropertyName, null, value, valueType!= null ? valueType.getType() : null, typeDescriptor.getMapValueTypeDescriptor());
Object convertedKey = convertIfNecessary(keyedPropertyName, null, key,
(keyType != null ? keyType.getType() : null), typeDescriptor.getMapKeyTypeDescriptor());
Object convertedValue = convertIfNecessary(keyedPropertyName, null, value,
(valueType!= null ? valueType.getType() : null), typeDescriptor.getMapValueTypeDescriptor());
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);
"] seems to be read-only - injecting original Map as-is: " + ex);
}
return original;
}
@ -615,4 +638,9 @@ class TypeConverterDelegate {
null);
}
private boolean canCreateCopy(Class requiredType) {
return (!requiredType.isInterface() && !Modifier.isAbstract(requiredType.getModifiers()) &&
Modifier.isPublic(requiredType.getModifiers()) && ClassUtils.hasConstructor(requiredType));
}
}