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/*
* Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
* ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
* DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use
* in the design, construction, operation or maintenance of any nuclear
* facility.
*/
package com.jogamp.common.util;
import java.lang.reflect.*;
import com.jogamp.common.JogampRuntimeException;
import com.jogamp.common.impl.Debug;
public final class ReflectionUtil {
public static final boolean DEBUG = Debug.debug("ReflectionUtil");
/**
* Returns true only if the class could be loaded.
*/
public static final boolean isClassAvailable(String clazzName) {
try {
return null != Class.forName(clazzName, false, ReflectionUtil.class.getClassLoader());
} catch (ClassNotFoundException e) {
return false;
}
}
/**
* Loads and returns the class or null.
* @see Class#forName(java.lang.String, boolean, java.lang.ClassLoader)
*/
public static final Class getClass(String clazzName, boolean initialize)
throws JogampRuntimeException {
try {
return getClassImpl(clazzName, initialize);
} catch (ClassNotFoundException e) {
throw new JogampRuntimeException(clazzName + " not available", e);
}
}
private static Class getClassImpl(String clazzName, boolean initialize) throws ClassNotFoundException {
return Class.forName(clazzName, initialize, ReflectionUtil.class.getClassLoader());
}
/**
* @throws JogampRuntimeException if the constructor can not be delivered.
*/
public static final Constructor getConstructor(String clazzName, Class[] cstrArgTypes)
throws JogampRuntimeException {
try {
return getConstructor(getClassImpl(clazzName, true), cstrArgTypes);
} catch (ClassNotFoundException ex) {
throw new JogampRuntimeException(clazzName + " not available", ex);
}
}
/**
* @throws JogampRuntimeException if the constructor can not be delivered.
*/
public static final Constructor getConstructor(Class clazz, Class[] cstrArgTypes)
throws JogampRuntimeException {
try {
return clazz.getDeclaredConstructor(cstrArgTypes);
} catch (NoSuchMethodException ex) {
String args = "";
for (int i = 0; i < cstrArgTypes.length; i++) {
args += cstrArgTypes[i].getName();
if(i != cstrArgTypes.length-1) {
args+= ", ";
}
}
throw new JogampRuntimeException("Constructor: '" + clazz + "(" + args + ")' not found", ex);
}
}
public static final Constructor getConstructor(String clazzName)
throws JogampRuntimeException {
return getConstructor(clazzName, new Class[0]);
}
/**
* @throws JogampRuntimeException if the instance can not be created.
*/
public static final Object createInstance(Class clazz, Class[] cstrArgTypes, Object[] cstrArgs)
throws JogampRuntimeException, RuntimeException
{
try {
return getConstructor(clazz, cstrArgTypes).newInstance(cstrArgs);
} catch (Exception e) {
Throwable t = e;
if (t instanceof InvocationTargetException) {
t = ((InvocationTargetException) t).getTargetException();
}
if (t instanceof Error) {
throw (Error) t;
}
if (t instanceof RuntimeException) {
throw (RuntimeException) t;
}
throw new JogampRuntimeException("can not create instance of "+clazz, t);
}
}
public static final Object createInstance(Class clazz, Object[] cstrArgs)
throws JogampRuntimeException, RuntimeException
{
Class[] cstrArgTypes = new Class[cstrArgs.length];
for(int i=0; i<cstrArgs.length; i++) {
cstrArgTypes[i] = cstrArgs[i].getClass();
}
return createInstance(clazz, cstrArgTypes, cstrArgs);
}
public static final Object createInstance(String clazzName, Class[] cstrArgTypes, Object[] cstrArgs)
throws JogampRuntimeException, RuntimeException
{
try {
return createInstance(getClassImpl(clazzName, true), cstrArgTypes, cstrArgs);
} catch (ClassNotFoundException ex) {
throw new JogampRuntimeException(clazzName + " not available", ex);
}
}
public static final Object createInstance(String clazzName, Object[] cstrArgs)
throws JogampRuntimeException, RuntimeException
{
Class[] cstrArgTypes = new Class[cstrArgs.length];
for(int i=0; i<cstrArgs.length; i++) {
cstrArgTypes[i] = cstrArgs[i].getClass();
}
return createInstance(clazzName, cstrArgTypes, cstrArgs);
}
public static final Object createInstance(String clazzName)
throws JogampRuntimeException, RuntimeException
{
return createInstance(clazzName, new Class[0], null);
}
public static final boolean instanceOf(Object obj, String clazzName) {
return instanceOf(obj.getClass(), clazzName);
}
public static final boolean instanceOf(Class clazz, String clazzName) {
do {
if(clazz.getName().equals(clazzName)) {
return true;
}
clazz = clazz.getSuperclass();
} while (clazz!=null);
return false;
}
public static final boolean implementationOf(Object obj, String faceName) {
return implementationOf(obj.getClass(), faceName);
}
public static final boolean implementationOf(Class clazz, String faceName) {
do {
Class[] clazzes = clazz.getInterfaces();
for(int i=clazzes.length-1; i>=0; i--) {
Class face = clazzes[i];
if(face.getName().equals(faceName)) {
return true;
}
}
clazz = clazz.getSuperclass();
} while (clazz!=null);
return false;
}
public static boolean isAWTComponent(Object target) {
return instanceOf(target, "java.awt.Component");
}
public static boolean isAWTComponent(Class clazz) {
return instanceOf(clazz, "java.awt.Component");
}
}
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