com.thoughtworks.proxy.kit

Class ReflectionUtils

java.lang.Object

com.thoughtworks.proxy.kit.ReflectionUtils

public class ReflectionUtils
extends Object

Helper class for introspecting interface and class hierarchies.

Since:

0.2

Author:

Aslak Hellesøy, Jörg Schaible

Field Summary

Fields

Modifier and Type	Field and Description
static Method	equals the Object.equals(Object) method.
static Method	hashCode the Object.hashCode() method.
static Method	toString the Object.toString() method.

Method Summary

Modifier and Type	Method and Description
static void	addIfClassProxyingSupportedAndNotObject(Class<?> type, Set<Class<?>> interfaces, ProxyFactory proxyFactory) Add the given type to the set of interfaces, if the given ProxyFactory supports proxy generation for this type.
static Set<Class<?>>	getAllInterfaces(Class<?> type) Get all interfaces of the given type.
static Set<Class<?>>	getAllInterfaces(Object... objects) Get all the interfaces implemented by a list of objects.
static Method	getMatchingMethod(Class<?> type, String methodName, Object[] args) Get the method of the given type, that has matching parameter types to the given arguments.
static Class<?>	getMostCommonSuperclass(Object... objects) Get most common superclass for all given objects.
static Class<?>[]	makeTypesArray(Class<?> primaryType, Class<?>[] types) Create an array of types.
static Method	readMethod(ObjectInputStream in) Read a Method from an ObjectInputStream.
static void	writeMethod(ObjectOutputStream out, Method method) Write a Method into an ObjectOutputStream.

Methods inherited from class java.lang.Object

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

Field Detail

equals

public static final Method equals

the Object.equals(Object) method.

hashCode

public static final Method hashCode

the Object.hashCode() method.

toString

public static final Method toString

the Object.toString() method.

Method Detail

getAllInterfaces

public static Set<Class<?>> getAllInterfaces(Object... objects)

Get all the interfaces implemented by a list of objects.

Parameters:

objects - the list of objects to consider.

Returns:

an set of interfaces. The set may be empty

Since:

0.2

getAllInterfaces

public static Set<Class<?>> getAllInterfaces(Class<?> type)

Get all interfaces of the given type. If the type is a class, the returned set contains any interface, that is implemented by the class. If the type is an interface, the all superinterfaces and the interface itself are included.

Parameters:

type - type to explore.

Returns:

a Set with all interfaces. The set may be empty.

Since:

0.2

getMostCommonSuperclass

public static Class<?> getMostCommonSuperclass(Object... objects)

Get most common superclass for all given objects.

Parameters:

objects - the array of objects to consider.

Returns:

the superclass or Void.class for an empty array.

Since:

0.2

addIfClassProxyingSupportedAndNotObject

public static void addIfClassProxyingSupportedAndNotObject(Class<?> type,
                                                           Set<Class<?>> interfaces,
                                                           ProxyFactory proxyFactory)

Add the given type to the set of interfaces, if the given ProxyFactory supports proxy generation for this type.

Parameters:

type - the class type (Object.class will be ignored)

interfaces - the set of interfaces

proxyFactory - the ProxyFactory in use

Since:

0.2

getMatchingMethod

public static Method getMatchingMethod(Class<?> type,
                                       String methodName,
                                       Object[] args)
                                throws NoSuchMethodException

Get the method of the given type, that has matching parameter types to the given arguments.

Parameters:

type - the type

methodName - the name of the method to search

args - the arguments to match

Returns:

the matching Method

Throws:

NoSuchMethodException - if no matching Method exists

Since:

0.2

writeMethod

public static void writeMethod(ObjectOutputStream out,
                               Method method)
                        throws IOException

Write a Method into an ObjectOutputStream.

Parameters:

out - the stream

method - the Method to write

Throws:

IOException - if writing causes a problem

Since:

0.2

readMethod

public static Method readMethod(ObjectInputStream in)
                         throws IOException,
                                ClassNotFoundException

Read a Method from an ObjectInputStream.

Parameters:

in - the stream

Returns:

the read Method

Throws:

IOException - if reading causes a problem

ClassNotFoundException - if class types from objects of the InputStream cannot be found

InvalidObjectException - if the Method cannot be found

Since:

0.2

makeTypesArray

public static Class<?>[] makeTypesArray(Class<?> primaryType,
                                        Class<?>[] types)

Create an array of types.

Parameters:

primaryType - the primary types

types - the additional types (may be null)

Returns:

an array of all the given types with the primary type as first element

Since:

1.0