com.thoughtworks.proxy.kit

Class ReflectionUtils

java.lang.Object

com.thoughtworks.proxy.kit.ReflectionUtils

public class ReflectionUtils
extends java.lang.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 java.lang.reflect.Method	equals the Object.equals(Object) method.
static java.lang.reflect.Method	hashCode the Object.hashCode() method.
static java.lang.reflect.Method	toString the Object.toString() method.

Method Summary

Methods

Modifier and Type	Method and Description
static void	addIfClassProxyingSupportedAndNotObject(java.lang.Class clazz, java.util.Set interfaces, ProxyFactory proxyFactory) Add the given type to the set of interfaces, if the given ProxyFactory supports proxy generation for this type.
static java.util.Set	getAllInterfaces(java.lang.Class clazz) Get all interfaces of the given type.
static java.util.Set	getAllInterfaces(java.lang.Object[] objects) Get all the interfaces implemented by a list of objects.
static java.lang.reflect.Method	getMatchingMethod(java.lang.Class type, java.lang.String methodName, java.lang.Object[] args) Get the method of the given type, that has matching parameter types to the given arguments.
static java.lang.Class	getMostCommonSuperclass(java.lang.Object[] objects) Get most common superclass for all given objects.
static java.lang.reflect.Method	readMethod(java.io.ObjectInputStream in) Read a Method from an ObjectInputStream.
static java.lang.Class[]	toClassArray(java.util.Collection collection) Convert the collection of class types to an array of class types.
static void	writeMethod(java.io.ObjectOutputStream out, java.lang.reflect.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 java.lang.reflect.Method equals

the Object.equals(Object) method.

hashCode

public static final java.lang.reflect.Method hashCode

the Object.hashCode() method.

toString

public static final java.lang.reflect.Method toString

the Object.toString() method.

Method Detail

getAllInterfaces

public static java.util.Set getAllInterfaces(java.lang.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

getAllInterfaces

public static java.util.Set getAllInterfaces(java.lang.Class clazz)

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:

clazz - type to explore.

Returns:

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

getMostCommonSuperclass

public static java.lang.Class getMostCommonSuperclass(java.lang.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.

addIfClassProxyingSupportedAndNotObject

public static void addIfClassProxyingSupportedAndNotObject(java.lang.Class clazz,
                                           java.util.Set interfaces,
                                           ProxyFactory proxyFactory)

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

Parameters:

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

interfaces - the set of interfaces

proxyFactory - the ProxyFactory in use

toClassArray

public static java.lang.Class[] toClassArray(java.util.Collection collection)

Convert the collection of class types to an array of class types.

Parameters:

collection - with class types

Returns:

an array of class types

getMatchingMethod

public static java.lang.reflect.Method getMatchingMethod(java.lang.Class type,
                                         java.lang.String methodName,
                                         java.lang.Object[] args)
                                                  throws java.lang.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:

java.lang.NoSuchMethodException - if no matching Method exists

Since:

0.2

writeMethod

public static void writeMethod(java.io.ObjectOutputStream out,
               java.lang.reflect.Method method)
                        throws java.io.IOException

Write a Method into an ObjectOutputStream.

Parameters:

out - the stream

method - the Method to write

Throws:

java.io.IOException - if writing causes a problem

Since:

1.2

readMethod

public static java.lang.reflect.Method readMethod(java.io.ObjectInputStream in)
                                           throws java.io.IOException,
                                                  java.lang.ClassNotFoundException

Read a Method from an ObjectInputStream.

Parameters:

in - the stream

Returns:

the read Method

Throws:

java.io.IOException - if reading causes a problem

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

java.io.InvalidObjectException - if the Method cannot be found

Since:

1.2