|
|
|
|
@ -29,9 +29,9 @@ import java.util.List;
@@ -29,9 +29,9 @@ import java.util.List;
|
|
|
|
|
/** |
|
|
|
|
* Simple utility class for working with the reflection API and handling |
|
|
|
|
* reflection exceptions. |
|
|
|
|
* |
|
|
|
|
* <p>Only intended for internal use. |
|
|
|
|
* |
|
|
|
|
* <p> |
|
|
|
|
* Only intended for internal use. |
|
|
|
|
* |
|
|
|
|
* @author Juergen Hoeller |
|
|
|
|
* @author Rob Harrop |
|
|
|
|
* @author Rod Johnson |
|
|
|
|
@ -43,12 +43,14 @@ public abstract class ReflectionUtils {
@@ -43,12 +43,14 @@ public abstract class ReflectionUtils {
|
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Attempt to find a {@link Field field} on the supplied {@link Class} with |
|
|
|
|
* the supplied <code>name</code>. Searches all superclasses up to {@link Object}. |
|
|
|
|
* the supplied <code>name</code>. Searches all superclasses up to |
|
|
|
|
* {@link Object}. |
|
|
|
|
* |
|
|
|
|
* @param clazz the class to introspect |
|
|
|
|
* @param name the name of the field |
|
|
|
|
* @return the corresponding Field object, or <code>null</code> if not found |
|
|
|
|
*/ |
|
|
|
|
public static Field findField(Class clazz, String name) { |
|
|
|
|
public static Field findField(Class<?> clazz, String name) { |
|
|
|
|
return findField(clazz, name, null); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
@ -56,20 +58,22 @@ public abstract class ReflectionUtils {
@@ -56,20 +58,22 @@ public abstract class ReflectionUtils {
|
|
|
|
|
* Attempt to find a {@link Field field} on the supplied {@link Class} with |
|
|
|
|
* the supplied <code>name</code> and/or {@link Class type}. Searches all |
|
|
|
|
* superclasses up to {@link Object}. |
|
|
|
|
* |
|
|
|
|
* @param clazz the class to introspect |
|
|
|
|
* @param name the name of the field (may be <code>null</code> if type is specified) |
|
|
|
|
* @param type the type of the field (may be <code>null</code> if name is specified) |
|
|
|
|
* @param name the name of the field (may be <code>null</code> if type is |
|
|
|
|
* specified) |
|
|
|
|
* @param type the type of the field (may be <code>null</code> if name is |
|
|
|
|
* specified) |
|
|
|
|
* @return the corresponding Field object, or <code>null</code> if not found |
|
|
|
|
*/ |
|
|
|
|
public static Field findField(Class clazz, String name, Class type) { |
|
|
|
|
public static Field findField(Class<?> clazz, String name, Class<?> type) { |
|
|
|
|
Assert.notNull(clazz, "Class must not be null"); |
|
|
|
|
Assert.isTrue(name != null || type != null, "Either name or type of the field must be specified"); |
|
|
|
|
Class searchType = clazz; |
|
|
|
|
Class<?> searchType = clazz; |
|
|
|
|
while (!Object.class.equals(searchType) && searchType != null) { |
|
|
|
|
Field[] fields = searchType.getDeclaredFields(); |
|
|
|
|
for (Field field : fields) { |
|
|
|
|
if ((name == null || name.equals(field.getName())) && |
|
|
|
|
(type == null || type.equals(field.getType()))) { |
|
|
|
|
if ((name == null || name.equals(field.getName())) && (type == null || type.equals(field.getType()))) { |
|
|
|
|
return field; |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
@ -81,11 +85,13 @@ public abstract class ReflectionUtils {
@@ -81,11 +85,13 @@ public abstract class ReflectionUtils {
|
|
|
|
|
/** |
|
|
|
|
* Set the field represented by the supplied {@link Field field object} on |
|
|
|
|
* the specified {@link Object target object} to the specified |
|
|
|
|
* <code>value</code>. In accordance with |
|
|
|
|
* {@link Field#set(Object, Object)} semantics, the new value is |
|
|
|
|
* automatically unwrapped if the underlying field has a primitive type. |
|
|
|
|
* <p>Thrown exceptions are handled via a call to |
|
|
|
|
* <code>value</code>. In accordance with {@link Field#set(Object, Object)} |
|
|
|
|
* semantics, the new value is automatically unwrapped if the underlying |
|
|
|
|
* field has a primitive type. |
|
|
|
|
* <p> |
|
|
|
|
* Thrown exceptions are handled via a call to |
|
|
|
|
* {@link #handleReflectionException(Exception)}. |
|
|
|
|
* |
|
|
|
|
* @param field the field to set |
|
|
|
|
* @param target the target object on which to set the field |
|
|
|
|
* @param value the value to set; may be <code>null</code> |
|
|
|
|
@ -96,18 +102,20 @@ public abstract class ReflectionUtils {
@@ -96,18 +102,20 @@ public abstract class ReflectionUtils {
|
|
|
|
|
} |
|
|
|
|
catch (IllegalAccessException ex) { |
|
|
|
|
handleReflectionException(ex); |
|
|
|
|
throw new IllegalStateException( |
|
|
|
|
"Unexpected reflection exception - " + ex.getClass().getName() + ": " + ex.getMessage()); |
|
|
|
|
throw new IllegalStateException("Unexpected reflection exception - " + ex.getClass().getName() + ": " |
|
|
|
|
+ ex.getMessage()); |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Get the field represented by the supplied {@link Field field object} on |
|
|
|
|
* the specified {@link Object target object}. In accordance with |
|
|
|
|
* {@link Field#get(Object)} semantics, the returned value is |
|
|
|
|
* automatically wrapped if the underlying field has a primitive type. |
|
|
|
|
* <p>Thrown exceptions are handled via a call to |
|
|
|
|
* {@link Field#get(Object)} semantics, the returned value is automatically |
|
|
|
|
* wrapped if the underlying field has a primitive type. |
|
|
|
|
* <p> |
|
|
|
|
* Thrown exceptions are handled via a call to |
|
|
|
|
* {@link #handleReflectionException(Exception)}. |
|
|
|
|
* |
|
|
|
|
* @param field the field to get |
|
|
|
|
* @param target the target object from which to get the field |
|
|
|
|
* @return the field's current value |
|
|
|
|
@ -118,42 +126,48 @@ public abstract class ReflectionUtils {
@@ -118,42 +126,48 @@ public abstract class ReflectionUtils {
|
|
|
|
|
} |
|
|
|
|
catch (IllegalAccessException ex) { |
|
|
|
|
handleReflectionException(ex); |
|
|
|
|
throw new IllegalStateException( |
|
|
|
|
"Unexpected reflection exception - " + ex.getClass().getName() + ": " + ex.getMessage()); |
|
|
|
|
throw new IllegalStateException("Unexpected reflection exception - " + ex.getClass().getName() + ": " |
|
|
|
|
+ ex.getMessage()); |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Attempt to find a {@link Method} on the supplied class with the supplied name |
|
|
|
|
* and no parameters. Searches all superclasses up to <code>Object</code>. |
|
|
|
|
* <p>Returns <code>null</code> if no {@link Method} can be found. |
|
|
|
|
* Attempt to find a {@link Method} on the supplied class with the supplied |
|
|
|
|
* name and no parameters. Searches all superclasses up to |
|
|
|
|
* <code>Object</code>. |
|
|
|
|
* <p> |
|
|
|
|
* Returns <code>null</code> if no {@link Method} can be found. |
|
|
|
|
* |
|
|
|
|
* @param clazz the class to introspect |
|
|
|
|
* @param name the name of the method |
|
|
|
|
* @return the Method object, or <code>null</code> if none found |
|
|
|
|
*/ |
|
|
|
|
public static Method findMethod(Class clazz, String name) { |
|
|
|
|
public static Method findMethod(Class<?> clazz, String name) { |
|
|
|
|
return findMethod(clazz, name, new Class[0]); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Attempt to find a {@link Method} on the supplied class with the supplied name |
|
|
|
|
* and parameter types. Searches all superclasses up to <code>Object</code>. |
|
|
|
|
* <p>Returns <code>null</code> if no {@link Method} can be found. |
|
|
|
|
* Attempt to find a {@link Method} on the supplied class with the supplied |
|
|
|
|
* name and parameter types. Searches all superclasses up to |
|
|
|
|
* <code>Object</code>. |
|
|
|
|
* <p> |
|
|
|
|
* Returns <code>null</code> if no {@link Method} can be found. |
|
|
|
|
* |
|
|
|
|
* @param clazz the class to introspect |
|
|
|
|
* @param name the name of the method |
|
|
|
|
* @param paramTypes the parameter types of the method |
|
|
|
|
* (may be <code>null</code> to indicate any signature) |
|
|
|
|
* @param paramTypes the parameter types of the method (may be |
|
|
|
|
* <code>null</code> to indicate any signature) |
|
|
|
|
* @return the Method object, or <code>null</code> if none found |
|
|
|
|
*/ |
|
|
|
|
public static Method findMethod(Class clazz, String name, Class... paramTypes) { |
|
|
|
|
public static Method findMethod(Class<?> clazz, String name, Class<?>... paramTypes) { |
|
|
|
|
Assert.notNull(clazz, "Class must not be null"); |
|
|
|
|
Assert.notNull(name, "Method name must not be null"); |
|
|
|
|
Class searchType = clazz; |
|
|
|
|
Class<?> searchType = clazz; |
|
|
|
|
while (searchType != null) { |
|
|
|
|
Method[] methods = (searchType.isInterface() ? searchType.getMethods() : searchType.getDeclaredMethods()); |
|
|
|
|
for (Method method : methods) { |
|
|
|
|
if (name.equals(method.getName()) && |
|
|
|
|
(paramTypes == null || Arrays.equals(paramTypes, method.getParameterTypes()))) { |
|
|
|
|
if (name.equals(method.getName()) |
|
|
|
|
&& (paramTypes == null || Arrays.equals(paramTypes, method.getParameterTypes()))) { |
|
|
|
|
return method; |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
@ -166,7 +180,10 @@ public abstract class ReflectionUtils {
@@ -166,7 +180,10 @@ public abstract class ReflectionUtils {
|
|
|
|
|
* Invoke the specified {@link Method} against the supplied target object |
|
|
|
|
* with no arguments. The target object can be <code>null</code> when |
|
|
|
|
* invoking a static {@link Method}. |
|
|
|
|
* <p>Thrown exceptions are handled via a call to {@link #handleReflectionException}. |
|
|
|
|
* <p> |
|
|
|
|
* Thrown exceptions are handled via a call to |
|
|
|
|
* {@link #handleReflectionException}. |
|
|
|
|
* |
|
|
|
|
* @param method the method to invoke |
|
|
|
|
* @param target the target object to invoke the method on |
|
|
|
|
* @return the invocation result, if any |
|
|
|
|
@ -180,7 +197,10 @@ public abstract class ReflectionUtils {
@@ -180,7 +197,10 @@ public abstract class ReflectionUtils {
|
|
|
|
|
* Invoke the specified {@link Method} against the supplied target object |
|
|
|
|
* with the supplied arguments. The target object can be <code>null</code> |
|
|
|
|
* when invoking a static {@link Method}. |
|
|
|
|
* <p>Thrown exceptions are handled via a call to {@link #handleReflectionException}. |
|
|
|
|
* <p> |
|
|
|
|
* Thrown exceptions are handled via a call to |
|
|
|
|
* {@link #handleReflectionException}. |
|
|
|
|
* |
|
|
|
|
* @param method the method to invoke |
|
|
|
|
* @param target the target object to invoke the method on |
|
|
|
|
* @param args the invocation arguments (may be <code>null</code>) |
|
|
|
|
@ -197,8 +217,9 @@ public abstract class ReflectionUtils {
@@ -197,8 +217,9 @@ public abstract class ReflectionUtils {
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Invoke the specified JDBC API {@link Method} against the supplied |
|
|
|
|
* target object with no arguments. |
|
|
|
|
* Invoke the specified JDBC API {@link Method} against the supplied target |
|
|
|
|
* object with no arguments. |
|
|
|
|
* |
|
|
|
|
* @param method the method to invoke |
|
|
|
|
* @param target the target object to invoke the method on |
|
|
|
|
* @return the invocation result, if any |
|
|
|
|
@ -210,8 +231,9 @@ public abstract class ReflectionUtils {
@@ -210,8 +231,9 @@ public abstract class ReflectionUtils {
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Invoke the specified JDBC API {@link Method} against the supplied |
|
|
|
|
* target object with the supplied arguments. |
|
|
|
|
* Invoke the specified JDBC API {@link Method} against the supplied target |
|
|
|
|
* object with the supplied arguments. |
|
|
|
|
* |
|
|
|
|
* @param method the method to invoke |
|
|
|
|
* @param target the target object to invoke the method on |
|
|
|
|
* @param args the invocation arguments (may be <code>null</code>) |
|
|
|
|
@ -236,11 +258,13 @@ public abstract class ReflectionUtils {
@@ -236,11 +258,13 @@ public abstract class ReflectionUtils {
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Handle the given reflection exception. Should only be called if |
|
|
|
|
* no checked exception is expected to be thrown by the target method. |
|
|
|
|
* <p>Throws the underlying RuntimeException or Error in case of an |
|
|
|
|
* Handle the given reflection exception. Should only be called if no |
|
|
|
|
* checked exception is expected to be thrown by the target method. |
|
|
|
|
* <p> |
|
|
|
|
* Throws the underlying RuntimeException or Error in case of an |
|
|
|
|
* InvocationTargetException with such a root cause. Throws an |
|
|
|
|
* IllegalStateException with an appropriate message else. |
|
|
|
|
* |
|
|
|
|
* @param ex the reflection exception to handle |
|
|
|
|
*/ |
|
|
|
|
public static void handleReflectionException(Exception ex) { |
|
|
|
|
@ -260,10 +284,12 @@ public abstract class ReflectionUtils {
@@ -260,10 +284,12 @@ public abstract class ReflectionUtils {
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Handle the given invocation target exception. Should only be called if |
|
|
|
|
* no checked exception is expected to be thrown by the target method. |
|
|
|
|
* <p>Throws the underlying RuntimeException or Error in case of such |
|
|
|
|
* a root cause. Throws an IllegalStateException else. |
|
|
|
|
* Handle the given invocation target exception. Should only be called if no |
|
|
|
|
* checked exception is expected to be thrown by the target method. |
|
|
|
|
* <p> |
|
|
|
|
* Throws the underlying RuntimeException or Error in case of such a root |
|
|
|
|
* cause. Throws an IllegalStateException else. |
|
|
|
|
* |
|
|
|
|
* @param ex the invocation target exception to handle |
|
|
|
|
*/ |
|
|
|
|
public static void handleInvocationTargetException(InvocationTargetException ex) { |
|
|
|
|
@ -272,12 +298,14 @@ public abstract class ReflectionUtils {
@@ -272,12 +298,14 @@ public abstract class ReflectionUtils {
|
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Rethrow the given {@link Throwable exception}, which is presumably the |
|
|
|
|
* <em>target exception</em> of an {@link InvocationTargetException}. |
|
|
|
|
* Should only be called if no checked exception is expected to be thrown by |
|
|
|
|
* the target method. |
|
|
|
|
* <p>Rethrows the underlying exception cast to an {@link RuntimeException} |
|
|
|
|
* or {@link Error} if appropriate; otherwise, throws an |
|
|
|
|
* <em>target exception</em> of an {@link InvocationTargetException}. Should |
|
|
|
|
* only be called if no checked exception is expected to be thrown by the |
|
|
|
|
* target method. |
|
|
|
|
* <p> |
|
|
|
|
* Rethrows the underlying exception cast to an {@link RuntimeException} or |
|
|
|
|
* {@link Error} if appropriate; otherwise, throws an |
|
|
|
|
* {@link IllegalStateException}. |
|
|
|
|
* |
|
|
|
|
* @param ex the exception to rethrow |
|
|
|
|
* @throws RuntimeException the rethrown exception |
|
|
|
|
*/ |
|
|
|
|
@ -293,12 +321,14 @@ public abstract class ReflectionUtils {
@@ -293,12 +321,14 @@ public abstract class ReflectionUtils {
|
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Rethrow the given {@link Throwable exception}, which is presumably the |
|
|
|
|
* <em>target exception</em> of an {@link InvocationTargetException}. |
|
|
|
|
* Should only be called if no checked exception is expected to be thrown by |
|
|
|
|
* the target method. |
|
|
|
|
* <p>Rethrows the underlying exception cast to an {@link Exception} or |
|
|
|
|
* <em>target exception</em> of an {@link InvocationTargetException}. Should |
|
|
|
|
* only be called if no checked exception is expected to be thrown by the |
|
|
|
|
* target method. |
|
|
|
|
* <p> |
|
|
|
|
* Rethrows the underlying exception cast to an {@link Exception} or |
|
|
|
|
* {@link Error} if appropriate; otherwise, throws an |
|
|
|
|
* {@link IllegalStateException}. |
|
|
|
|
* |
|
|
|
|
* @param ex the exception to rethrow |
|
|
|
|
* @throws Exception the rethrown exception (in case of a checked exception) |
|
|
|
|
*/ |
|
|
|
|
@ -314,6 +344,7 @@ public abstract class ReflectionUtils {
@@ -314,6 +344,7 @@ public abstract class ReflectionUtils {
|
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Throws an IllegalStateException with the given exception as root cause. |
|
|
|
|
* |
|
|
|
|
* @param ex the unexpected exception |
|
|
|
|
*/ |
|
|
|
|
private static void handleUnexpectedException(Throwable ex) { |
|
|
|
|
@ -321,18 +352,19 @@ public abstract class ReflectionUtils {
@@ -321,18 +352,19 @@ public abstract class ReflectionUtils {
|
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Determine whether the given method explicitly declares the given exception |
|
|
|
|
* or one of its superclasses, which means that an exception of that type |
|
|
|
|
* can be propagated as-is within a reflective invocation. |
|
|
|
|
* Determine whether the given method explicitly declares the given |
|
|
|
|
* exception or one of its superclasses, which means that an exception of |
|
|
|
|
* that type can be propagated as-is within a reflective invocation. |
|
|
|
|
* |
|
|
|
|
* @param method the declaring method |
|
|
|
|
* @param exceptionType the exception to throw |
|
|
|
|
* @return <code>true</code> if the exception can be thrown as-is; |
|
|
|
|
* <code>false</code> if it needs to be wrapped |
|
|
|
|
*/ |
|
|
|
|
public static boolean declaresException(Method method, Class exceptionType) { |
|
|
|
|
public static boolean declaresException(Method method, Class<?> exceptionType) { |
|
|
|
|
Assert.notNull(method, "Method must not be null"); |
|
|
|
|
Class[] declaredExceptions = method.getExceptionTypes(); |
|
|
|
|
for (Class declaredException : declaredExceptions) { |
|
|
|
|
Class<?>[] declaredExceptions = method.getExceptionTypes(); |
|
|
|
|
for (Class<?> declaredException : declaredExceptions) { |
|
|
|
|
if (declaredException.isAssignableFrom(exceptionType)) { |
|
|
|
|
return true; |
|
|
|
|
} |
|
|
|
|
@ -340,9 +372,9 @@ public abstract class ReflectionUtils {
@@ -340,9 +372,9 @@ public abstract class ReflectionUtils {
|
|
|
|
|
return false; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Determine whether the given field is a "public static final" constant. |
|
|
|
|
* |
|
|
|
|
* @param field the field to check |
|
|
|
|
*/ |
|
|
|
|
public static boolean isPublicStaticFinal(Field field) { |
|
|
|
|
@ -352,101 +384,107 @@ public abstract class ReflectionUtils {
@@ -352,101 +384,107 @@ public abstract class ReflectionUtils {
|
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Determine whether the given method is an "equals" method. |
|
|
|
|
* |
|
|
|
|
* @see java.lang.Object#equals |
|
|
|
|
*/ |
|
|
|
|
public static boolean isEqualsMethod(Method method) { |
|
|
|
|
if (method == null || !method.getName().equals("equals")) { |
|
|
|
|
return false; |
|
|
|
|
} |
|
|
|
|
Class[] paramTypes = method.getParameterTypes(); |
|
|
|
|
Class<?>[] paramTypes = method.getParameterTypes(); |
|
|
|
|
return (paramTypes.length == 1 && paramTypes[0] == Object.class); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Determine whether the given method is a "hashCode" method. |
|
|
|
|
* |
|
|
|
|
* @see java.lang.Object#hashCode |
|
|
|
|
*/ |
|
|
|
|
public static boolean isHashCodeMethod(Method method) { |
|
|
|
|
return (method != null && method.getName().equals("hashCode") && |
|
|
|
|
method.getParameterTypes().length == 0); |
|
|
|
|
return (method != null && method.getName().equals("hashCode") && method.getParameterTypes().length == 0); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Determine whether the given method is a "toString" method. |
|
|
|
|
* |
|
|
|
|
* @see java.lang.Object#toString() |
|
|
|
|
*/ |
|
|
|
|
public static boolean isToStringMethod(Method method) { |
|
|
|
|
return (method != null && method.getName().equals("toString") && |
|
|
|
|
method.getParameterTypes().length == 0); |
|
|
|
|
return (method != null && method.getName().equals("toString") && method.getParameterTypes().length == 0); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Make the given field accessible, explicitly setting it accessible if necessary. |
|
|
|
|
* The <code>setAccessible(true)</code> method is only called when actually necessary, |
|
|
|
|
* to avoid unnecessary conflicts with a JVM SecurityManager (if active). |
|
|
|
|
* Make the given field accessible, explicitly setting it accessible if |
|
|
|
|
* necessary. The <code>setAccessible(true)</code> method is only called |
|
|
|
|
* when actually necessary, to avoid unnecessary conflicts with a JVM |
|
|
|
|
* SecurityManager (if active). |
|
|
|
|
* |
|
|
|
|
* @param field the field to make accessible |
|
|
|
|
* @see java.lang.reflect.Field#setAccessible |
|
|
|
|
*/ |
|
|
|
|
public static void makeAccessible(Field field) { |
|
|
|
|
if (!Modifier.isPublic(field.getModifiers()) || |
|
|
|
|
!Modifier.isPublic(field.getDeclaringClass().getModifiers())) { |
|
|
|
|
if (!Modifier.isPublic(field.getModifiers()) || !Modifier.isPublic(field.getDeclaringClass().getModifiers())) { |
|
|
|
|
field.setAccessible(true); |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Make the given method accessible, explicitly setting it accessible if necessary. |
|
|
|
|
* The <code>setAccessible(true)</code> method is only called when actually necessary, |
|
|
|
|
* to avoid unnecessary conflicts with a JVM SecurityManager (if active). |
|
|
|
|
* Make the given method accessible, explicitly setting it accessible if |
|
|
|
|
* necessary. The <code>setAccessible(true)</code> method is only called |
|
|
|
|
* when actually necessary, to avoid unnecessary conflicts with a JVM |
|
|
|
|
* SecurityManager (if active). |
|
|
|
|
* |
|
|
|
|
* @param method the method to make accessible |
|
|
|
|
* @see java.lang.reflect.Method#setAccessible |
|
|
|
|
*/ |
|
|
|
|
public static void makeAccessible(Method method) { |
|
|
|
|
if (!Modifier.isPublic(method.getModifiers()) || |
|
|
|
|
!Modifier.isPublic(method.getDeclaringClass().getModifiers())) { |
|
|
|
|
if (!Modifier.isPublic(method.getModifiers()) || !Modifier.isPublic(method.getDeclaringClass().getModifiers())) { |
|
|
|
|
method.setAccessible(true); |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Make the given constructor accessible, explicitly setting it accessible if necessary. |
|
|
|
|
* The <code>setAccessible(true)</code> method is only called when actually necessary, |
|
|
|
|
* to avoid unnecessary conflicts with a JVM SecurityManager (if active). |
|
|
|
|
* Make the given constructor accessible, explicitly setting it accessible |
|
|
|
|
* if necessary. The <code>setAccessible(true)</code> method is only called |
|
|
|
|
* when actually necessary, to avoid unnecessary conflicts with a JVM |
|
|
|
|
* SecurityManager (if active). |
|
|
|
|
* |
|
|
|
|
* @param ctor the constructor to make accessible |
|
|
|
|
* @see java.lang.reflect.Constructor#setAccessible |
|
|
|
|
*/ |
|
|
|
|
public static void makeAccessible(Constructor ctor) { |
|
|
|
|
if (!Modifier.isPublic(ctor.getModifiers()) || |
|
|
|
|
!Modifier.isPublic(ctor.getDeclaringClass().getModifiers())) { |
|
|
|
|
public static void makeAccessible(Constructor<?> ctor) { |
|
|
|
|
if (!Modifier.isPublic(ctor.getModifiers()) || !Modifier.isPublic(ctor.getDeclaringClass().getModifiers())) { |
|
|
|
|
ctor.setAccessible(true); |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Perform the given callback operation on all matching methods of the |
|
|
|
|
* given class and superclasses. |
|
|
|
|
* <p>The same named method occurring on subclass and superclass will |
|
|
|
|
* appear twice, unless excluded by a {@link MethodFilter}. |
|
|
|
|
* Perform the given callback operation on all matching methods of the given |
|
|
|
|
* class and superclasses. |
|
|
|
|
* <p> |
|
|
|
|
* The same named method occurring on subclass and superclass will appear |
|
|
|
|
* twice, unless excluded by a {@link MethodFilter}. |
|
|
|
|
* |
|
|
|
|
* @param targetClass class to start looking at |
|
|
|
|
* @param mc the callback to invoke for each method |
|
|
|
|
* @see #doWithMethods(Class, MethodCallback, MethodFilter) |
|
|
|
|
*/ |
|
|
|
|
public static void doWithMethods(Class targetClass, MethodCallback mc) throws IllegalArgumentException { |
|
|
|
|
public static void doWithMethods(Class<?> targetClass, MethodCallback mc) throws IllegalArgumentException { |
|
|
|
|
doWithMethods(targetClass, mc, null); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Perform the given callback operation on all matching methods of the |
|
|
|
|
* given class and superclasses. |
|
|
|
|
* <p>The same named method occurring on subclass and superclass will |
|
|
|
|
* appear twice, unless excluded by the specified {@link MethodFilter}. |
|
|
|
|
* Perform the given callback operation on all matching methods of the given |
|
|
|
|
* class and superclasses. |
|
|
|
|
* <p> |
|
|
|
|
* The same named method occurring on subclass and superclass will appear |
|
|
|
|
* twice, unless excluded by the specified {@link MethodFilter}. |
|
|
|
|
* |
|
|
|
|
* @param targetClass class to start looking at |
|
|
|
|
* @param mc the callback to invoke for each method |
|
|
|
|
* @param mf the filter that determines the methods to apply the callback to |
|
|
|
|
*/ |
|
|
|
|
public static void doWithMethods(Class targetClass, MethodCallback mc, MethodFilter mf) |
|
|
|
|
public static void doWithMethods(Class<?> targetClass, MethodCallback mc, MethodFilter mf) |
|
|
|
|
throws IllegalArgumentException { |
|
|
|
|
|
|
|
|
|
// Keep backing up the inheritance hierarchy.
|
|
|
|
|
@ -460,22 +498,22 @@ public abstract class ReflectionUtils {
@@ -460,22 +498,22 @@ public abstract class ReflectionUtils {
|
|
|
|
|
mc.doWith(method); |
|
|
|
|
} |
|
|
|
|
catch (IllegalAccessException ex) { |
|
|
|
|
throw new IllegalStateException( |
|
|
|
|
"Shouldn't be illegal to access method '" + method.getName() + "': " + ex); |
|
|
|
|
throw new IllegalStateException("Shouldn't be illegal to access method '" + method.getName() |
|
|
|
|
+ "': " + ex); |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
targetClass = targetClass.getSuperclass(); |
|
|
|
|
} |
|
|
|
|
while (targetClass != null); |
|
|
|
|
} while (targetClass != null); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Get all declared methods on the leaf class and all superclasses. |
|
|
|
|
* Leaf class methods are included first. |
|
|
|
|
* Get all declared methods on the leaf class and all superclasses. Leaf |
|
|
|
|
* class methods are included first. |
|
|
|
|
*/ |
|
|
|
|
public static Method[] getAllDeclaredMethods(Class leafClass) throws IllegalArgumentException { |
|
|
|
|
public static Method[] getAllDeclaredMethods(Class<?> leafClass) throws IllegalArgumentException { |
|
|
|
|
final List<Method> methods = new ArrayList<Method>(32); |
|
|
|
|
doWithMethods(leafClass, new MethodCallback() { |
|
|
|
|
|
|
|
|
|
public void doWith(Method method) { |
|
|
|
|
methods.add(method); |
|
|
|
|
} |
|
|
|
|
@ -483,25 +521,26 @@ public abstract class ReflectionUtils {
@@ -483,25 +521,26 @@ public abstract class ReflectionUtils {
|
|
|
|
|
return methods.toArray(new Method[methods.size()]); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Invoke the given callback on all fields in the target class, |
|
|
|
|
* going up the class hierarchy to get all declared fields. |
|
|
|
|
* Invoke the given callback on all fields in the target class, going up the |
|
|
|
|
* class hierarchy to get all declared fields. |
|
|
|
|
* |
|
|
|
|
* @param targetClass the target class to analyze |
|
|
|
|
* @param fc the callback to invoke for each field |
|
|
|
|
*/ |
|
|
|
|
public static void doWithFields(Class targetClass, FieldCallback fc) throws IllegalArgumentException { |
|
|
|
|
public static void doWithFields(Class<?> targetClass, FieldCallback fc) throws IllegalArgumentException { |
|
|
|
|
doWithFields(targetClass, fc, null); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Invoke the given callback on all fields in the target class, |
|
|
|
|
* going up the class hierarchy to get all declared fields. |
|
|
|
|
* Invoke the given callback on all fields in the target class, going up the |
|
|
|
|
* class hierarchy to get all declared fields. |
|
|
|
|
* |
|
|
|
|
* @param targetClass 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 |
|
|
|
|
*/ |
|
|
|
|
public static void doWithFields(Class targetClass, FieldCallback fc, FieldFilter ff) |
|
|
|
|
public static void doWithFields(Class<?> targetClass, FieldCallback fc, FieldFilter ff) |
|
|
|
|
throws IllegalArgumentException { |
|
|
|
|
|
|
|
|
|
// Keep backing up the inheritance hierarchy.
|
|
|
|
|
@ -517,19 +556,19 @@ public abstract class ReflectionUtils {
@@ -517,19 +556,19 @@ public abstract class ReflectionUtils {
|
|
|
|
|
fc.doWith(field); |
|
|
|
|
} |
|
|
|
|
catch (IllegalAccessException ex) { |
|
|
|
|
throw new IllegalStateException( |
|
|
|
|
"Shouldn't be illegal to access field '" + field.getName() + "': " + ex); |
|
|
|
|
throw new IllegalStateException("Shouldn't be illegal to access field '" + field.getName() + "': " |
|
|
|
|
+ ex); |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
targetClass = targetClass.getSuperclass(); |
|
|
|
|
} |
|
|
|
|
while (targetClass != null && targetClass != Object.class); |
|
|
|
|
} while (targetClass != null && targetClass != Object.class); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* 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 IllegalArgumentException if the arguments are incompatible |
|
|
|
|
*/ |
|
|
|
|
public static void shallowCopyFieldState(final Object src, final Object dest) throws IllegalArgumentException { |
|
|
|
|
@ -540,10 +579,11 @@ public abstract class ReflectionUtils {
@@ -540,10 +579,11 @@ public abstract class ReflectionUtils {
|
|
|
|
|
throw new IllegalArgumentException("Destination for field copy cannot be null"); |
|
|
|
|
} |
|
|
|
|
if (!src.getClass().isAssignableFrom(dest.getClass())) { |
|
|
|
|
throw new IllegalArgumentException("Destination class [" + dest.getClass().getName() + |
|
|
|
|
"] must be same or subclass as source class [" + src.getClass().getName() + "]"); |
|
|
|
|
throw new IllegalArgumentException("Destination class [" + dest.getClass().getName() |
|
|
|
|
+ "] must be same or subclass as source class [" + src.getClass().getName() + "]"); |
|
|
|
|
} |
|
|
|
|
doWithFields(src.getClass(), new FieldCallback() { |
|
|
|
|
|
|
|
|
|
public void doWith(Field field) throws IllegalArgumentException, IllegalAccessException { |
|
|
|
|
makeAccessible(field); |
|
|
|
|
Object srcValue = field.get(src); |
|
|
|
|
@ -560,25 +600,26 @@ public abstract class ReflectionUtils {
@@ -560,25 +600,26 @@ public abstract class ReflectionUtils {
|
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Perform an operation using the given method. |
|
|
|
|
* |
|
|
|
|
* @param method the method to operate on |
|
|
|
|
*/ |
|
|
|
|
void doWith(Method method) throws IllegalArgumentException, IllegalAccessException; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Callback optionally used to method fields to be operated on by a method callback. |
|
|
|
|
* Callback optionally used to method fields to be operated on by a method |
|
|
|
|
* callback. |
|
|
|
|
*/ |
|
|
|
|
public static interface MethodFilter { |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Determine whether the given method matches. |
|
|
|
|
* |
|
|
|
|
* @param method the method to check |
|
|
|
|
*/ |
|
|
|
|
boolean matches(Method method); |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Callback interface invoked on each field in the hierarchy. |
|
|
|
|
*/ |
|
|
|
|
@ -586,19 +627,21 @@ public abstract class ReflectionUtils {
@@ -586,19 +627,21 @@ public abstract class ReflectionUtils {
|
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Perform an operation using the given field. |
|
|
|
|
* |
|
|
|
|
* @param field the field to operate on |
|
|
|
|
*/ |
|
|
|
|
void doWith(Field field) throws IllegalArgumentException, IllegalAccessException; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Callback optionally used to filter fields to be operated on by a field callback. |
|
|
|
|
* Callback optionally used to filter fields to be operated on by a field |
|
|
|
|
* callback. |
|
|
|
|
*/ |
|
|
|
|
public static interface FieldFilter { |
|
|
|
|
|
|
|
|
|
/** |
|
|
|
|
* Determine whether the given field matches. |
|
|
|
|
* |
|
|
|
|
* @param field the field to check |
|
|
|
|
*/ |
|
|
|
|
boolean matches(Field field); |
|
|
|
|
@ -609,9 +652,9 @@ public abstract class ReflectionUtils {
@@ -609,9 +652,9 @@ public abstract class ReflectionUtils {
|
|
|
|
|
* Pre-built FieldFilter that matches all non-static, non-final fields. |
|
|
|
|
*/ |
|
|
|
|
public static FieldFilter COPYABLE_FIELDS = new FieldFilter() { |
|
|
|
|
|
|
|
|
|
public boolean matches(Field field) { |
|
|
|
|
return !(Modifier.isStatic(field.getModifiers()) || |
|
|
|
|
Modifier.isFinal(field.getModifiers())); |
|
|
|
|
return !(Modifier.isStatic(field.getModifiers()) || Modifier.isFinal(field.getModifiers())); |
|
|
|
|
} |
|
|
|
|
}; |
|
|
|
|
|
|
|
|
|
|