Package org.codehaus.plexus.util

Class ReflectionUtils

java.lang.Object

org.codehaus.plexus.util.ReflectionUtils

public final class ReflectionUtils
extends Object

Operations on a class' fields and their setters.

Author:

Michal Maczka, Jesse McConnell, Trygve Laugstøl

Constructor Summary

Constructors

Constructor	Description
ReflectionUtils()

Method Summary

Modifier and Type	Method	Description
static Field	getFieldByNameIncludingSuperclasses(String fieldName, Class<?> clazz)
static List<Field>	getFieldsIncludingSuperclasses(Class<?> clazz)
static Method	getSetter(String fieldName, Class<?> clazz)	Finds a setter in the given class for the given field.
static List<Method>	getSetters(Class<?> clazz)
static Class<?>	getSetterType(Method method)
static Object	getValueIncludingSuperclasses(String variable, Object object)	Generates a map of the fields and values on a given object, also pulls from superclasses
static Map<String,Object>	getVariablesAndValuesIncludingSuperclasses(Object object)	Generates a map of the fields and values on a given object, also pulls from superclasses
static boolean	isSetter(Method method)
static void	setVariableValueInObject(Object object, String variable, Object value)	attempts to set the value to the variable in the object passed in

Methods inherited from class java.lang.Object

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

Constructor Detail

ReflectionUtils

public ReflectionUtils()

Method Detail

getFieldByNameIncludingSuperclasses

public static Field getFieldByNameIncludingSuperclasses(String fieldName,
                                                        Class<?> clazz)

getFieldsIncludingSuperclasses

public static List<Field> getFieldsIncludingSuperclasses(Class<?> clazz)

getSetter

public static Method getSetter(String fieldName,
                               Class<?> clazz)

Finds a setter in the given class for the given field. It searches interfaces and superclasses too.

Parameters:

fieldName - the name of the field (i.e. 'fooBar'); it will search for a method named 'setFooBar'.

clazz - The class to find the method in.

Returns:

null or the method found.

getSetters

public static List<Method> getSetters(Class<?> clazz)

Parameters:

clazz - the Class

Returns:

all setters in the given class and super classes.

getSetterType

public static Class<?> getSetterType(Method method)

Parameters:

method - the method

Returns:

the class of the argument to the setter. Will throw an RuntimeException if the method isn't a setter.

setVariableValueInObject

public static void setVariableValueInObject(Object object,
                                            String variable,
                                            Object value)
                                     throws IllegalAccessException

attempts to set the value to the variable in the object passed in

Parameters:

object - see name

variable - see name

value - see name

Throws:

IllegalAccessException - if error

getValueIncludingSuperclasses

public static Object getValueIncludingSuperclasses(String variable,
                                                   Object object)
                                            throws IllegalAccessException

Generates a map of the fields and values on a given object, also pulls from superclasses

Parameters:

variable - field name

object - the object to generate the list of fields from

Returns:

map containing the fields and their values

Throws:

IllegalAccessException - cannot access

getVariablesAndValuesIncludingSuperclasses

public static Map<String,Object> getVariablesAndValuesIncludingSuperclasses(Object object)
                                                                           throws IllegalAccessException

Generates a map of the fields and values on a given object, also pulls from superclasses

Parameters:

object - the object to generate the list of fields from

Returns:

map containing the fields and their values

Throws:

IllegalAccessException - cannot access

isSetter

public static boolean isSetter(Method method)