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Consistent throwing of BeanCreationExceptions (and reflection exceptions)

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Issue: SPR-14883
(cherry picked from commit b42d731)
This commit is contained in:
Juergen Hoeller
2016-11-07 16:56:35 +01:00
parent 1f128110f7
commit cf479bf893
10 changed files with 204 additions and 102 deletions
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53
spring-core/src/main/java/org/springframework/util/ReflectionUtils.java
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@@ -499,6 +499,7 @@ public abstract class ReflectionUtils {
* @param clazz the class to introspect
* @param mc the callback to invoke for each method
* @since 4.2
* @throws IllegalStateException if introspection fails
* @see #doWithMethods
*/
public static void doWithLocalMethods(Class<?> clazz, MethodCallback mc) {
@@ -520,6 +521,7 @@ public abstract class ReflectionUtils {
* twice, unless excluded by a {@link MethodFilter}.
* @param clazz the class to introspect
* @param mc the callback to invoke for each method
* @throws IllegalStateException if introspection fails
* @see #doWithMethods(Class, MethodCallback, MethodFilter)
*/
public static void doWithMethods(Class<?> clazz, MethodCallback mc) {
@@ -534,6 +536,7 @@ public abstract class ReflectionUtils {
* @param clazz the class to introspect
* @param mc the callback to invoke for each method
* @param mf the filter that determines the methods to apply the callback to
* @throws IllegalStateException if introspection fails
*/
public static void doWithMethods(Class<?> clazz, MethodCallback mc, MethodFilter mf) {
// Keep backing up the inheritance hierarchy.
@@ -563,6 +566,7 @@ public abstract class ReflectionUtils {
* Get all declared methods on the leaf class and all superclasses.
* Leaf class methods are included first.
* @param leafClass the class to introspect
* @throws IllegalStateException if introspection fails
*/
public static Method[] getAllDeclaredMethods(Class<?> leafClass) {
final List<Method> methods = new ArrayList<>(32);
@@ -580,6 +584,7 @@ public abstract class ReflectionUtils {
* Leaf class methods are included first and while traversing the superclass hierarchy
* any methods found with signatures matching a method already included are filtered out.
* @param leafClass the class to introspect
* @throws IllegalStateException if introspection fails
*/
public static Method[] getUniqueDeclaredMethods(Class<?> leafClass) {
final List<Method> methods = new ArrayList<>(32);
@@ -620,26 +625,34 @@ public abstract class ReflectionUtils {
* interfaces, since those are effectively to be treated just like declared methods.
* @param clazz the class to introspect
* @return the cached array of methods
* @throws IllegalStateException if introspection fails
* @see Class#getDeclaredMethods()
*/
private static Method[] getDeclaredMethods(Class<?> clazz) {
Assert.notNull(clazz, "Class must not be null");
Method[] result = declaredMethodsCache.get(clazz);
if (result == null) {
Method[] declaredMethods = clazz.getDeclaredMethods();
List<Method> defaultMethods = findConcreteMethodsOnInterfaces(clazz);
if (defaultMethods != null) {
result = new Method[declaredMethods.length + defaultMethods.size()];
System.arraycopy(declaredMethods, 0, result, 0, declaredMethods.length);
int index = declaredMethods.length;
for (Method defaultMethod : defaultMethods) {
result[index] = defaultMethod;
index++;
try {
Method[] declaredMethods = clazz.getDeclaredMethods();
List<Method> defaultMethods = findConcreteMethodsOnInterfaces(clazz);
if (defaultMethods != null) {
result = new Method[declaredMethods.length + defaultMethods.size()];
System.arraycopy(declaredMethods, 0, result, 0, declaredMethods.length);
int index = declaredMethods.length;
for (Method defaultMethod : defaultMethods) {
result[index] = defaultMethod;
index++;
}
}
else {
result = declaredMethods;
}
declaredMethodsCache.put(clazz, (result.length == 0 ? NO_METHODS : result));
}
else {
result = declaredMethods;
catch (Throwable ex) {
throw new IllegalStateException("Failed to introspect Class [" + clazz +
"] from ClassLoader [" + clazz.getClassLoader() + "]", ex);
}
declaredMethodsCache.put(clazz, (result.length == 0 ? NO_METHODS : result));
}
return result;
}
@@ -665,6 +678,7 @@ public abstract class ReflectionUtils {
* @param clazz the target class to analyze
* @param fc the callback to invoke for each field
* @since 4.2
* @throws IllegalStateException if introspection fails
* @see #doWithFields
*/
public static void doWithLocalFields(Class<?> clazz, FieldCallback fc) {
@@ -683,6 +697,7 @@ public abstract class ReflectionUtils {
* class hierarchy to get all declared fields.
* @param clazz the target class to analyze
* @param fc the callback to invoke for each field
* @throws IllegalStateException if introspection fails
*/
public static void doWithFields(Class<?> clazz, FieldCallback fc) {
doWithFields(clazz, fc, null);
@@ -694,6 +709,7 @@ public abstract class ReflectionUtils {
* @param clazz the target class to analyze
* @param fc the callback to invoke for each field
* @param ff the filter that determines the fields to apply the callback to
* @throws IllegalStateException if introspection fails
*/
public static void doWithFields(Class<?> clazz, FieldCallback fc, FieldFilter ff) {
// Keep backing up the inheritance hierarchy.
@@ -721,13 +737,21 @@ public abstract class ReflectionUtils {
* in order to avoid the JVM's SecurityManager check and defensive array copying.
* @param clazz the class to introspect
* @return the cached array of fields
* @throws IllegalStateException if introspection fails
* @see Class#getDeclaredFields()
*/
private static Field[] getDeclaredFields(Class<?> clazz) {
Assert.notNull(clazz, "Class must not be null");
Field[] result = declaredFieldsCache.get(clazz);
if (result == null) {
result = clazz.getDeclaredFields();
declaredFieldsCache.put(clazz, (result.length == 0 ? NO_FIELDS : result));
try {
result = clazz.getDeclaredFields();
declaredFieldsCache.put(clazz, (result.length == 0 ? NO_FIELDS : result));
}
catch (Throwable ex) {
throw new IllegalStateException("Failed to introspect Class [" + clazz +
"] from ClassLoader [" + clazz.getClassLoader() + "]", ex);
}
}
return result;
}
@@ -736,6 +760,7 @@ public abstract class ReflectionUtils {
* Given the source object and the destination, which must be the same class
* or a subclass, copy all fields, including inherited fields. Designed to
* work on objects with public no-arg constructors.
* @throws IllegalStateException if introspection fails
*/
public static void shallowCopyFieldState(final Object src, final Object dest) {
if (src == null) {