diff options
| -rw-r--r-- | src/nativewindow/classes/com/jogamp/nativewindow/impl/NWReflection.java | 125 |
1 files changed, 66 insertions, 59 deletions
diff --git a/src/nativewindow/classes/com/jogamp/nativewindow/impl/NWReflection.java b/src/nativewindow/classes/com/jogamp/nativewindow/impl/NWReflection.java index 22bdeda..9bac947 100644 --- a/src/nativewindow/classes/com/jogamp/nativewindow/impl/NWReflection.java +++ b/src/nativewindow/classes/com/jogamp/nativewindow/impl/NWReflection.java @@ -40,73 +40,83 @@ import java.lang.reflect.*; import javax.media.nativewindow.*; public final class NWReflection { + public static final boolean DEBUG = Debug.debug("NWReflection"); - public static final boolean isClassAvailable(String clazzName) { - try { - Class clazz = Class.forName(clazzName, false, NWReflection.class.getClassLoader()); - return null!=clazz; - } catch (Throwable e) { } - return false; - } + /** + * Returns true only if the class could be loaded. + */ + public static final boolean isClassAvailable(String clazzName) { + try { + return null != Class.forName(clazzName, false, NWReflection.class.getClassLoader()); + } catch (ClassNotFoundException e) { + return false; + } + } - public static final Class getClass(String clazzName, boolean initialize) { - try { - return Class.forName(clazzName, initialize, NWReflection.class.getClassLoader()); - } catch (Throwable e) { } - return null; - } + /** + * 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) { + try { + return getClassImpl(clazzName, initialize); + } catch (ClassNotFoundException e) { + return null; + } + } - public static final Constructor getConstructor(String clazzName, Class[] cstrArgTypes) { - Class factoryClass = null; - Constructor factory = null; + private static Class getClassImpl(String clazzName, boolean initialize) throws ClassNotFoundException { + return Class.forName(clazzName, initialize, NWReflection.class.getClassLoader()); + } - try { - factoryClass = getClass(clazzName, true); - if (factoryClass == null) { - throw new NativeWindowException(clazzName + " not available"); + /** + * @throws NativeWindowException if the constructor can not be delivered. + */ + public static final Constructor getConstructor(String clazzName, Class[] cstrArgTypes) { + try { + return getConstructor(getClassImpl(clazzName, true), cstrArgTypes); + } catch (ClassNotFoundException ex) { + throw new NativeWindowException(clazzName + " not available", ex); } - return getConstructor(factoryClass, cstrArgTypes); - } catch (Throwable e) { - if (DEBUG) { - e.printStackTrace(); - } - throw new NativeWindowException(e); } - } - - public static final Constructor getConstructor(Class clazz, Class[] cstrArgTypes) { - Constructor factory = null; - try { + /** + * @throws NativeWindowException if the constructor can not be delivered. + */ + public static final Constructor getConstructor(Class clazz, Class[] cstrArgTypes) { try { - factory = clazz.getDeclaredConstructor( cstrArgTypes ); - } catch(NoSuchMethodException nsme) { - throw new NativeWindowException("Constructor: '" + clazz + "("+cstrArgTypes+")' not found"); + 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 NativeWindowException("Constructor: '" + clazz + "(" + args + ")' not found", ex); } - return factory; - } catch (Throwable e) { - if (DEBUG) { - e.printStackTrace(); - } - throw new NativeWindowException(e); } - } public static final Constructor getConstructor(String clazzName) { return getConstructor(clazzName, new Class[0]); } - public static final Object createInstance(Class clazz, Class[] cstrArgTypes, Object[] cstrArgs) { - Constructor factory = null; - - try { - factory = getConstructor(clazz, cstrArgTypes); - return factory.newInstance( cstrArgs ) ; - } catch (Exception e) { - throw new NativeWindowException(e); + /** + * @throws NativeWindowException if the instance can not be created. + */ + public static final Object createInstance(Class clazz, Class[] cstrArgTypes, Object[] cstrArgs) { + try { + return getConstructor(clazz, cstrArgTypes).newInstance(cstrArgs); + } catch (InstantiationException ex) { + throw new NativeWindowException("can not create instance of class "+clazz, ex); + } catch (InvocationTargetException ex) { + throw new NativeWindowException("can not create instance of class "+clazz, ex); + } catch (IllegalAccessException ex) { + throw new NativeWindowException("can not create instance of class "+clazz, ex); + } } - } public static final Object createInstance(Class clazz, Object[] cstrArgs) { Class[] cstrArgTypes = new Class[cstrArgs.length]; @@ -116,16 +126,13 @@ public final class NWReflection { return createInstance(clazz, cstrArgTypes, cstrArgs); } - public static final Object createInstance(String clazzName, Class[] cstrArgTypes, Object[] cstrArgs) { - Constructor factory = null; - - try { - factory = getConstructor(clazzName, cstrArgTypes); - return factory.newInstance( cstrArgs ) ; - } catch (Exception e) { - throw new NativeWindowException(e); + public static final Object createInstance(String clazzName, Class[] cstrArgTypes, Object[] cstrArgs) { + try { + return createInstance(getClassImpl(clazzName, true), cstrArgTypes, cstrArgs); + } catch (ClassNotFoundException ex) { + throw new NativeWindowException(clazzName + " not available", ex); + } } - } public static final Object createInstance(String clazzName, Object[] cstrArgs) { Class[] cstrArgTypes = new Class[cstrArgs.length]; |