nl.nn.credentialprovider.util

Class ClassUtils

java.lang.Object

nl.nn.credentialprovider.util.ClassUtils

public class ClassUtils
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
protected static Logger	log

Constructor Summary

Constructors

Constructor and Description
ClassUtils()

Method Summary

Modifier and Type	Method and Description
static String	getCleanedFilePath(String path) clean up file path, to replace websphere specific classpath references with generic ones.
static Constructor	getConstructorOnType(Class clas, Class[] parameterTypes) Retrieves the constructor of a class, based on the parameters
static Object	getDeclaredFieldValue(Object o, Class c, String name)
static Object	getDeclaredFieldValue(Object o, String name)
static Object	getFieldValue(Object o, Class c, String name)
static Object	getFieldValue(Object o, String name)
static Object	getFieldValueSafe(Object o, String name)
static URL	getResourceURL(String resource)
static boolean	implementsInterface(Class class1, Class iface) Tests if a class implements a given interface
static boolean	implementsInterface(String className, String iface) Tests if a class implements a given interface
static Object	invokeGetter(Object o, String name)
static Object	invokeGetter(Object o, String name, boolean forceAccess)
static Object	invokeGetterSafe(Object o, String name, boolean forceAccess)
static void	invokeSetter(Object o, String name, Object value)
static void	invokeSetter(Object o, String name, Object value, Class clazz)
static String	invokeStringGetter(Object o, String name)
static String	invokeStringGetterSafe(Object o, String name)
static long	lastModified(Class aClass) Determine the last modification date for this class file or its enclosing library
static Class	loadClass(String className) Load a class given its name.
static String	nameOf(Object o) returns the className of the object, without the package name.
static Object	newInstance(String className) Create a new instance given a class name.
static Object	newInstance(String className, Class[] parameterClasses, Object[] parameterObjects) creates a new instance of an object, based on the classname as string, the classes and the actual parameters.
static Object	newInstance(String className, Object[] parameterObjects) Creates a new instance from a class, while it looks for a constructor that matches the parameters, and initializes the object (by calling the constructor) Notice: this does not work when the instantiated object uses an interface class as a parameter, as the class names are, in that case, not the same..
static String	which(Class aClass) Gets the absolute pathname of the class file containing the specified class name, as prescribed by the current classpath.

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static Logger log

Constructor Detail

ClassUtils

public ClassUtils()

Method Detail

getConstructorOnType

public static Constructor getConstructorOnType(Class clas,
                                               Class[] parameterTypes)

Retrieves the constructor of a class, based on the parameters

getResourceURL

public static URL getResourceURL(String resource)
                          throws FileNotFoundException

Throws:

FileNotFoundException

implementsInterface

public static boolean implementsInterface(Class class1,
                                          Class iface)

Tests if a class implements a given interface

Returns:

true if class implements given interface.

implementsInterface

public static boolean implementsInterface(String className,
                                          String iface)
                                   throws Exception

Tests if a class implements a given interface

Returns:

true if class implements given interface.

Throws:

Exception

lastModified

public static long lastModified(Class aClass)
                         throws IOException,
                                IllegalArgumentException

Determine the last modification date for this class file or its enclosing library

Parameters:

aClass - A class whose last modification date is queried

Returns:

The time the given class was last modified

Throws:

IOException - IOError

IllegalArgumentException - The class was not loaded from a file or directory

loadClass

public static Class loadClass(String className)
                       throws ClassNotFoundException

Load a class given its name. BL: We wan't to use a known ClassLoader--hopefully the heirarchy is set correctly.

Parameters:

className - A class name

Returns:

The class pointed to by className

Throws:

ClassNotFoundException - If a loading error occurs

newInstance

public static Object newInstance(String className)
                          throws Exception

Create a new instance given a class name. The constructor of the class does NOT have parameters.

Parameters:

className - A class name

Returns:

A new instance

Throws:

Exception - If an instantiation error occurs

newInstance

public static Object newInstance(String className,
                                 Class[] parameterClasses,
                                 Object[] parameterObjects)

creates a new instance of an object, based on the classname as string, the classes and the actual parameters.

newInstance

public static Object newInstance(String className,
                                 Object[] parameterObjects)

Creates a new instance from a class, while it looks for a constructor that matches the parameters, and initializes the object (by calling the constructor) Notice: this does not work when the instantiated object uses an interface class as a parameter, as the class names are, in that case, not the same..

Parameters:

className - a class Name

parameterObjects - the parameters for the constructor

Returns:

A new Instance

which

public static String which(Class aClass)

Gets the absolute pathname of the class file containing the specified class name, as prescribed by the current classpath.

Parameters:

aClass - A class

nameOf

public static String nameOf(Object o)

returns the className of the object, without the package name.

invokeSetter

public static void invokeSetter(Object o,
                                String name,
                                Object value)
                         throws SecurityException,
                                NoSuchMethodException,
                                IllegalArgumentException,
                                IllegalAccessException,
                                InvocationTargetException

Throws:

SecurityException

NoSuchMethodException

IllegalArgumentException

IllegalAccessException

InvocationTargetException

invokeSetter

public static void invokeSetter(Object o,
                                String name,
                                Object value,
                                Class clazz)
                         throws SecurityException,
                                NoSuchMethodException,
                                IllegalArgumentException,
                                IllegalAccessException,
                                InvocationTargetException

Throws:

SecurityException

NoSuchMethodException

IllegalArgumentException

IllegalAccessException

InvocationTargetException

invokeGetterSafe

public static Object invokeGetterSafe(Object o,
                                      String name,
                                      boolean forceAccess)

invokeGetter

public static Object invokeGetter(Object o,
                                  String name,
                                  boolean forceAccess)
                           throws SecurityException,
                                  NoSuchMethodException,
                                  IllegalArgumentException,
                                  IllegalAccessException,
                                  InvocationTargetException

Throws:

SecurityException

NoSuchMethodException

IllegalArgumentException

IllegalAccessException

InvocationTargetException

invokeGetter

public static Object invokeGetter(Object o,
                                  String name)
                           throws SecurityException,
                                  NoSuchMethodException,
                                  IllegalArgumentException,
                                  IllegalAccessException,
                                  InvocationTargetException

Throws:

SecurityException

NoSuchMethodException

IllegalArgumentException

IllegalAccessException

InvocationTargetException

invokeStringGetterSafe

public static String invokeStringGetterSafe(Object o,
                                            String name)

invokeStringGetter

public static String invokeStringGetter(Object o,
                                        String name)
                                 throws SecurityException,
                                        NoSuchMethodException,
                                        IllegalArgumentException,
                                        IllegalAccessException,
                                        InvocationTargetException

Throws:

SecurityException

NoSuchMethodException

IllegalArgumentException

IllegalAccessException

InvocationTargetException

getFieldValueSafe

public static Object getFieldValueSafe(Object o,
                                       String name)

getFieldValue

public static Object getFieldValue(Object o,
                                   Class c,
                                   String name)
                            throws IllegalArgumentException,
                                   SecurityException,
                                   IllegalAccessException,
                                   NoSuchFieldException

Throws:

IllegalArgumentException

SecurityException

IllegalAccessException

NoSuchFieldException

getFieldValue

public static Object getFieldValue(Object o,
                                   String name)
                            throws IllegalArgumentException,
                                   SecurityException,
                                   IllegalAccessException,
                                   NoSuchFieldException

Throws:

IllegalArgumentException

SecurityException

IllegalAccessException

NoSuchFieldException

getDeclaredFieldValue

public static Object getDeclaredFieldValue(Object o,
                                           Class c,
                                           String name)
                                    throws IllegalArgumentException,
                                           SecurityException,
                                           IllegalAccessException,
                                           NoSuchFieldException

Throws:

IllegalArgumentException

SecurityException

IllegalAccessException

NoSuchFieldException

getDeclaredFieldValue

public static Object getDeclaredFieldValue(Object o,
                                           String name)
                                    throws IllegalArgumentException,
                                           SecurityException,
                                           IllegalAccessException,
                                           NoSuchFieldException

Throws:

IllegalArgumentException

SecurityException

IllegalAccessException

NoSuchFieldException

getCleanedFilePath

public static String getCleanedFilePath(String path)

clean up file path, to replace websphere specific classpath references with generic ones.