de.seven.fate.model.builder.util

Class FieldUtil

java.lang.Object

de.seven.fate.model.builder.util.FieldUtil

public final class FieldUtil
extends Object

Field Util

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	FieldUtil.FieldCallback Callback interface invoked on each field in the hierarchy.
static interface	FieldUtil.FieldFilter Callback optionally used to filter fields to be operated on by a field callback.

Method Summary

Modifier and Type	Method and Description
static void	doWithFields(Class<?> clazz, FieldUtil.FieldCallback fc, FieldUtil.FieldFilter ff) Invoke the given callback on all fields in the target class, going up the class hierarchy to get all declared fields.
static <T> T	getFieldValue(Field field, Object object) get Filed value or throw IllegalArgumentException for given field
static List<Field>	getPropertyFields(Class<?> type)
static boolean	isRequiredField(Field field) Return true if is Required Field else false
static void	makeAccessible(Field field) Make the given field accessible, explicitly setting it accessible if necessary.
static void	setFieldValue(Field field, Object target, Object value) Set the field represented by the supplied field object on the specified target object to the specified value.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getPropertyFields

public static List<Field> getPropertyFields(Class<?> type)

Parameters:

type - may not be null

Returns:

List of Field-properties

isRequiredField

public static boolean isRequiredField(Field field)

Return true if is Required Field else false

Parameters:

field - may not be null

Returns:

boolean

getFieldValue

public static <T> T getFieldValue(Field field,
                                  Object object)

get Filed value or throw IllegalArgumentException for given field

Type Parameters:

T - required type

Parameters:

field - may not be null

object - may not be null

Returns:

Object or throw IllegalArgumentException

setFieldValue

public static void setFieldValue(Field field,
                                 Object target,
                                 Object value)

Set the field represented by the supplied field object on the specified target object to the specified value. In accordance with Field.set(Object, Object) semantics, the new value is automatically unwrapped if the underlying field has a primitive type.

Thrown exceptions are handled via a call to IllegalStateException.

Parameters:

field - the field to set

target - the target object on which to set the field

value - the value to set (may be null)

doWithFields

public static void doWithFields(Class<?> clazz,
                                FieldUtil.FieldCallback fc,
                                FieldUtil.FieldFilter ff)

Invoke the given callback on all fields in the target class, going up the class hierarchy to get all declared fields.

Parameters:

clazz - the target class to analyze

fc - the callback to invoke for each field

ff - the filter that determines the fields to apply the callback to

makeAccessible

public static void makeAccessible(Field field)

Make the given field accessible, explicitly setting it accessible if necessary. The setAccessible(true) method is only called when actually necessary, to avoid unnecessary conflicts with a JVM SecurityManager (if active).

Parameters:

field - the field to make accessible

See Also:

AccessibleObject.setAccessible(java.lang.reflect.AccessibleObject[], boolean)