at.molindo.utils.reflect

Class ClassUtils

java.lang.Object

at.molindo.utils.reflect.ClassUtils

public class ClassUtils
extends Object

Method Summary

Modifier and Type	Method and Description
static Class<?>	forName(String classname)
static Class<?>	forName(String classname, boolean init)
static Class<?>	forName(String classname, boolean init, Class<?> fallback)
static Class<?>	forName(String classname, boolean init, Thread thread)
static Class<?>	forName(String classname, boolean init, Thread thread, Class<?> fallback)
static ClassLoader	getClassLoader()
static ClassLoader	getClassLoader(Class<?> fallback)
static ClassLoader	getClassLoader(Thread thread)
static ClassLoader	getClassLoader(Thread thread, Class<?> fallback)
static URL	getClasspathResource(Class<?> scope, String resource)
static InputStream	getClasspathResourceAsStream(Class<?> scope, String resource)
static Enumeration<URL>	getClasspathResources(Class<?> scope, String resource)
static String	getPackageResourcePath(Class<?> scope, String resource)
static Class<?>	getTypeArgument(Class<?> cls, Class<?> genericCls)
static Class<?>[]	getTypeArguments(Class<?> cls, Class<?> genericCls)
static Iterator<Class<?>>	hierarchy(Class<?> cls)
static boolean	isAssignable(Class<?> cls, Set<Class<?>> classes)
static boolean	isAssignableToAll(Class<?> cls, Set<Class<?>> classes)
static Class<?>	toClass(Class<?> declaringCls, Type type)

Methods inherited from class java.lang.Object

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

Method Detail

getTypeArgument

public static Class<?> getTypeArgument(Class<?> cls,
                                       Class<?> genericCls)

Parameters:

type -

genericCls -

Returns:

first actual type arguments of gernicCls in type hierarchy of cls

getTypeArguments

public static Class<?>[] getTypeArguments(Class<?> cls,
                                          Class<?> genericCls)

Parameters:

type -

genericCls -

Returns:

actual type arguments of gernicCls in type hierarchy of cls

toClass

public static Class<?> toClass(Class<?> declaringCls,
                               Type type)

isAssignable

public static boolean isAssignable(Class<?> cls,
                                   Set<Class<?>> classes)

Returns:

true if cls is assignable to at least one class in classes

isAssignableToAll

public static boolean isAssignableToAll(Class<?> cls,
                                        Set<Class<?>> classes)

Returns:

true if cls is assignable to all classes

forName

public static Class<?> forName(String classname)
                        throws ClassNotFoundException

Throws:

ClassNotFoundException

forName

public static Class<?> forName(String classname,
                               boolean init)
                        throws ClassNotFoundException

Throws:

ClassNotFoundException

forName

public static Class<?> forName(String classname,
                               boolean init,
                               Thread thread)
                        throws ClassNotFoundException

Throws:

ClassNotFoundException

forName

public static Class<?> forName(String classname,
                               boolean init,
                               Class<?> fallback)
                        throws ClassNotFoundException

Throws:

ClassNotFoundException

forName

public static Class<?> forName(String classname,
                               boolean init,
                               Thread thread,
                               Class<?> fallback)
                        throws ClassNotFoundException

Parameters:

-

classname - fully qualified name of the desired class

init - whether the class must be initialized

thread - thread to use for context classloader or null for current thread

fallback - ClassLoader providing class if no context classloader or null for this class

Returns:

class object representing the desired class

Throws:

ClassNotFoundException - if the class cannot be located by the specified class loader

See Also:

Thread.currentThread(), Thread.getContextClassLoader(), Class.getClassLoader(), Class.forName(String, boolean, ClassLoader)

getClassLoader

public static ClassLoader getClassLoader()

getClassLoader

public static ClassLoader getClassLoader(Class<?> fallback)

getClassLoader

public static ClassLoader getClassLoader(Thread thread)

getClassLoader

public static ClassLoader getClassLoader(Thread thread,
                                         Class<?> fallback)

Parameters:

thread - Thread to use for context ClassLoader or null for current thread

fallback - ClassLoader providing class if no context classloader or null for this class

Returns:

never null

getClasspathResource

public static URL getClasspathResource(Class<?> scope,
                                       String resource)

See Also:

getPackageResourcePath(Class, String), ClassLoader.getResource(String)

getClasspathResourceAsStream

public static InputStream getClasspathResourceAsStream(Class<?> scope,
                                                       String resource)

See Also:

getPackageResourcePath(Class, String), ClassLoader.getResourceAsStream(String)

getClasspathResources

public static Enumeration<URL> getClasspathResources(Class<?> scope,
                                                     String resource)
                                              throws IOException

Throws:

IOException

See Also:

getPackageResourcePath(Class, String), ClassLoader.getResources(String)

getPackageResourcePath

public static String getPackageResourcePath(Class<?> scope,
                                            String resource)

Returns:

the full classpath for the resource in the same package as scope

hierarchy

public static Iterator<Class<?>> hierarchy(Class<?> cls)

Returns:

an Iterator over the Class hierarchy

See Also:

Class.getSuperclass()