org.easymock.internal

Class ReflectionUtils

java.lang.Object

org.easymock.internal.ReflectionUtils

public final class ReflectionUtils
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.reflect.Method	OBJECT_EQUALS
static java.lang.reflect.Method	OBJECT_FINALIZE
static java.lang.reflect.Method	OBJECT_HASHCODE
static java.lang.reflect.Method	OBJECT_TOSTRING
private static java.util.Map<java.lang.Class<?>,java.lang.Class<?>>	primitiveToWrapperType

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ReflectionUtils()

Method Summary

Modifier and Type	Method and Description
static java.lang.reflect.Method	findMethod(java.lang.Class<?> clazz, java.lang.String name) Attempt to find a Method on the supplied class with the supplied name and no parameters.
static java.lang.reflect.Method	findMethod(java.lang.Class<?> clazz, java.lang.String name, java.lang.Class<?>... paramTypes) Attempt to find a Method on the supplied class with the supplied name and parameter types.
static <T> java.lang.reflect.Constructor<T>	getConstructor(java.lang.Class<T> clazz, java.lang.Object... objs) Returns a constructor that contains objs as arguments.
static java.lang.reflect.Method	getDeclaredMethod(java.lang.Class<?> clazz, java.lang.String name, java.lang.Class<?>... paramTypes) Basically calls getDeclaredMethod on a Class but wraps the NoSuchMethodException into a Runtime.
static boolean	isClassAvailable(java.lang.String className) Tells if a class is available in the classpath
private static boolean	isMatchingConstructor(java.lang.reflect.Constructor<?> classConstructor, java.lang.Object... objs) Returns true if objects in objs are eligible to be passed to classConstructor.
private static java.lang.Class<?>	wrapPrimitive(java.lang.Class<?> parameterType) Given a primitive type, returns its boxed equivalent.

Methods inherited from class java.lang.Object

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

Field Detail

primitiveToWrapperType

private static final java.util.Map<java.lang.Class<?>,java.lang.Class<?>> primitiveToWrapperType

OBJECT_EQUALS

public static final java.lang.reflect.Method OBJECT_EQUALS

OBJECT_HASHCODE

public static final java.lang.reflect.Method OBJECT_HASHCODE

OBJECT_TOSTRING

public static final java.lang.reflect.Method OBJECT_TOSTRING

OBJECT_FINALIZE

public static final java.lang.reflect.Method OBJECT_FINALIZE

Constructor Detail

ReflectionUtils

private ReflectionUtils()

Method Detail

findMethod

public static java.lang.reflect.Method findMethod(java.lang.Class<?> clazz,
                                                  java.lang.String name)

Attempt to find a Method on the supplied class with the supplied name and no parameters. Searches all superclasses up to Object.

Returns null if no Method can be found.

Parameters:

clazz - the class to introspect

name - the name of the method

Returns:

the Method object, or null if none found

findMethod

public static java.lang.reflect.Method findMethod(java.lang.Class<?> clazz,
                                                  java.lang.String name,
                                                  java.lang.Class<?>... paramTypes)

Attempt to find a Method on the supplied class with the supplied name and parameter types. Searches all superclasses up to Object.

Returns null if no Method can be found.

Parameters:

clazz - the class to introspect

name - the name of the method

paramTypes - the parameter types of the method (may be null to indicate any signature)

Returns:

the Method object, or null if none found

getConstructor

public static <T> java.lang.reflect.Constructor<T> getConstructor(java.lang.Class<T> clazz,
                                                                  java.lang.Object... objs)
                                                           throws java.lang.NoSuchMethodException

Returns a constructor that contains objs as arguments.

We could not do something like clazz.getConstructor(objs.class()) because that would require casting all the passed arguments to the exact parameter types of the desired constructor.

Type Parameters:

T - type of the class searched

Parameters:

clazz - class on which we are searching the constructor

objs - list of arguments of the constructor

Returns:

a constructor with the arguments in objs

Throws:

java.lang.NoSuchMethodException - when the constructor with args does not exist or is ambiguous

isMatchingConstructor

private static boolean isMatchingConstructor(java.lang.reflect.Constructor<?> classConstructor,
                                             java.lang.Object... objs)

Returns true if objects in objs are eligible to be passed to classConstructor.

wrapPrimitive

private static java.lang.Class<?> wrapPrimitive(java.lang.Class<?> parameterType)

Given a primitive type, returns its boxed equivalent. For instance, given int, returns Integer.

Parameters:

parameterType - the primitive type

Returns:

the boxed equivalent

getDeclaredMethod

public static java.lang.reflect.Method getDeclaredMethod(java.lang.Class<?> clazz,
                                                         java.lang.String name,
                                                         java.lang.Class<?>... paramTypes)

Basically calls getDeclaredMethod on a Class but wraps the NoSuchMethodException into a Runtime.

Parameters:

clazz - class on which the getDeclaredMethod is called

name - method name

paramTypes - method parameters

Returns:

the method searched

isClassAvailable

public static boolean isClassAvailable(java.lang.String className)

Tells if a class is available in the classpath

Parameters:

className - full class name

Returns:

true if the class was found