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java.lang.Object org.axonframework.common.ReflectionUtils
public abstract class ReflectionUtils
Utility class for working with Java Reflection API.
Method Summary | ||
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static Class<?> |
declaringClass(Class<?> instanceClass,
String methodName,
Class<?>... parameterTypes)
Returns the class on which the method with name " getter " and parameters of type
parameterTypes is declared. |
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static
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ensureAccessible(T member)
Makes the given member accessible via reflection if it is not the case already. |
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static boolean |
explicitlyUnequal(Object value,
Object otherValue)
Indicates whether the two given objects are not the same, override an equals method that indicates they are not equal, or implements Comparable which indicates the two are not equal. |
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static Iterable<Field> |
fieldsOf(Class<?> clazz)
Returns an Iterable of all the fields declared on the given class and its super classes. |
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static Object |
getFieldValue(Field field,
Object object)
Returns the value of the given field in the given object . |
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static boolean |
hasEqualsMethod(Class<?> type)
Indicates whether the given class implements a customized equals method. |
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static boolean |
isAccessible(AccessibleObject member)
Indicates whether the given member is accessible. |
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static boolean |
isNonFinalPublicMember(Member member)
Checks whether the given member is public and non-final. |
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static boolean |
isTransient(Field field)
Indicates whether the given field has the "transient" modifier |
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static Iterable<Method> |
methodsOf(Class<?> clazz)
Returns an Iterable of all the methods declared on the given class and its super classes. |
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static Class<?> |
resolvePrimitiveWrapperType(Class<?> primitiveType)
Returns the boxed wrapper type for the given primitiveType . |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public static Object getFieldValue(Field field, Object object)
field
in the given object
. If necessary, the field is
made accessible, assuming the security manager allows it.
field
- The field containing the valueobject
- The object to retrieve the field's value from
field
in the object
IllegalStateException
- if the field is not accessible and the security manager doesn't allow it to be
made
accessiblepublic static Class<?> declaringClass(Class<?> instanceClass, String methodName, Class<?>... parameterTypes)
getter
" and parameters of type
parameterTypes
is declared. The given instanceClass
is the instance on which the
method cn be called. If the method is not available on the given instanceClass
, null
is returned.
instanceClass
- The class on which to look for the methodmethodName
- The name of the methodparameterTypes
- The parameter types of the method
null
if not foundpublic static boolean hasEqualsMethod(Class<?> type)
Object
.
type
- The type to inspect
true
if the given type overrides the equals method, otherwise false
public static boolean explicitlyUnequal(Object value, Object otherValue)
Comparable
which indicates the two are not equal. If this
method cannot safely indicate two objects are not equal, it returns
false
.
value
- One of the values to compareotherValue
- other value to compare
true
if these objects explicitly indicate they are not equal, false
otherwise.public static <T extends AccessibleObject> T ensureAccessible(T member)
member
accessible via reflection if it is not the case already.
T
- The type of member to make accessiblemember
- The member (field, method, constructor, etc) to make accessible
member
, for easier method chaining
IllegalStateException
- if the member is not accessible and the security manager doesn't allow it to be
made accessiblepublic static boolean isAccessible(AccessibleObject member)
member
is accessible. It does so by checking whether the member is
non-final and public, or made accessible via reflection.
member
- The member (field, method, constructor, etc) to check for accessibility
true
if the member is accessible, otherwise false
.public static boolean isNonFinalPublicMember(Member member)
member
is public and non-final. These members do no need to be set
accessible using reflection.
member
- The member to check
true
if the member is public and non-final, otherwise false
.isAccessible(java.lang.reflect.AccessibleObject)
,
ensureAccessible(java.lang.reflect.AccessibleObject)
public static Iterable<Field> fieldsOf(Class<?> clazz)
Iterable
of all the fields declared on the given class and its super classes. The iterator
will always return fields declared in a subtype before returning fields declared in a super type.
clazz
- The class to return fields for
Iterable
providing access to all declared fields in the class hierarchypublic static Iterable<Method> methodsOf(Class<?> clazz)
Iterable
of all the methods declared on the given class and its super classes. The iterator
will always return methods declared in a subtype before returning methods declared in a super type.
clazz
- The class to return methods for
Iterable
providing access to all declared methods in the class hierarchypublic static Class<?> resolvePrimitiveWrapperType(Class<?> primitiveType)
primitiveType
.
primitiveType
- The primitive type to return boxed wrapper type for
primitiveType
IllegalArgumentException
- will be thrown instead of returning null if no wrapper class was found.public static boolean isTransient(Field field)
field
- the field to inspect
true
if the field is marked transient, otherwise false
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