Package org.apache.shardingsphere.data.pipeline.core.util

Class ReflectionUtil

java.lang.Object

org.apache.shardingsphere.data.pipeline.core.util.ReflectionUtil

public final class ReflectionUtil
extends Object

Reflection utils.

Constructor Summary

Constructors

Constructor	Description
ReflectionUtil()

Method Summary

Modifier and Type	Method	Description
static Field	getField(Class<?> targetClass, String fieldName, boolean isDeclared)	Get field from class.
static <T> T	getFieldValue(Object target, String fieldName, Class<T> valueClass)	Get field value from instance target object.
static <T> T	getStaticFieldValue(Class<?> targetClass, String fieldName, Class<T> valueClass)	Get static field value.
static Object	invokeMethod(Object target, String methodName, Class<?>[] parameterTypes, Object[] parameterValues)	Invoke method.
static void	setFieldValue(Object target, String fieldName, Object value)	Set value into target object field.

Methods inherited from class java.lang.Object

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

Constructor Details

ReflectionUtil

public ReflectionUtil()

Method Details

setFieldValue

public static void setFieldValue(Object target,
 String fieldName,
 Object value)
                          throws NoSuchFieldException,
IllegalAccessException

Set value into target object field.

Parameters:

target - target object

fieldName - field name

value - new value

Throws:

NoSuchFieldException - no such field exception

IllegalAccessException - illegal access exception

getFieldValue

public static <T> T getFieldValue(Object target,
 String fieldName,
 Class<T> valueClass)
                           throws NoSuchFieldException,
IllegalAccessException

Get field value from instance target object.

Type Parameters:

T - expected value class

Parameters:

target - target object

fieldName - field name

valueClass - expected value class

Returns:

target filed value

Throws:

NoSuchFieldException - no such field exception

IllegalAccessException - illegal access exception

getStaticFieldValue

public static <T> T getStaticFieldValue(Class<?> targetClass,
 String fieldName,
 Class<T> valueClass)
                                 throws NoSuchFieldException,
IllegalAccessException

Get static field value.

Type Parameters:

T - expected value class

Parameters:

targetClass - target class

fieldName - field name

valueClass - expected value class

Returns:

target filed value

Throws:

NoSuchFieldException - no such field exception

IllegalAccessException - illegal access exception

getField

public static Field getField(Class<?> targetClass,
 String fieldName,
 boolean isDeclared)
                      throws NoSuchFieldException

Get field from class.

Parameters:

targetClass - target class

fieldName - field name

isDeclared - is declared

Returns:

Field

Throws:

NoSuchFieldException - no such field exception

invokeMethod

public static Object invokeMethod(Object target,
 String methodName,
 Class<?>[] parameterTypes,
 Object[] parameterValues)
                           throws NoSuchMethodException,
InvocationTargetException,
IllegalAccessException

Invoke method.

Parameters:

target - target object

methodName - method name

parameterTypes - parameter types

parameterValues - parameter values

Returns:

invoke method result.

Throws:

NoSuchMethodException - no such field exception

InvocationTargetException - invocation target exception

IllegalAccessException - illegal access exception