diff options
Diffstat (limited to 'sandbox/pasteInNewTable/org.eclipse.papyrus.infra.tools/src/org/eclipse/papyrus/infra/tools/util/ClassLoaderHelper.java')
| -rw-r--r-- | sandbox/pasteInNewTable/org.eclipse.papyrus.infra.tools/src/org/eclipse/papyrus/infra/tools/util/ClassLoaderHelper.java | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/sandbox/pasteInNewTable/org.eclipse.papyrus.infra.tools/src/org/eclipse/papyrus/infra/tools/util/ClassLoaderHelper.java b/sandbox/pasteInNewTable/org.eclipse.papyrus.infra.tools/src/org/eclipse/papyrus/infra/tools/util/ClassLoaderHelper.java deleted file mode 100644 index da6ae044f7d..00000000000 --- a/sandbox/pasteInNewTable/org.eclipse.papyrus.infra.tools/src/org/eclipse/papyrus/infra/tools/util/ClassLoaderHelper.java +++ /dev/null @@ -1,139 +0,0 @@ -/*****************************************************************************
- * Copyright (c) 2010 CEA LIST.
- *
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- * Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
- *****************************************************************************/
-package org.eclipse.papyrus.infra.tools.util;
-
-import org.eclipse.papyrus.infra.tools.Activator;
-
-/**
- * A Helper class for Class Loading.
- *
- * @author Camille Letavernier
- */
-//This class needs the "BuddyPolicy" set to "dependent" in the Manifest.MF,
-//in order to be able to retrieve the classes it loads
-//
-//This is the org.eclipse.papyrus.infra.tools class loader which is used for loading
-//a class, instead of each caller's ClassLoader
-//
-//Plug-ins using this class should also either set their Buddy-policy to dependent or
-//reexport the dependency to oep.infra.tools
-public class ClassLoaderHelper {
-
- /**
- * Loads the class matching the given className. Exceptions are caught and sent
- * to the Logger.
- *
- * @param className
- * The qualified name of the Class to load.
- * @return
- * The loaded Class, or null if an error occured
- */
- public static Class<?> loadClass(String className) {
- try {
- Class<?> clazz = Activator.getDefault().getBundle().loadClass(className);
- return clazz;
- } catch (ClassNotFoundException ex) {
- Activator.log.error(String.format("The class %s doesn't exist", className), ex); //$NON-NLS-1$
- } catch (NullPointerException ex) {
- Activator.log.error("Cannot load class " + className, ex); //$NON-NLS-1$
- }
-
- return null;
- }
-
- /**
- * Loads and returns the class denoted by the given className.
- * Checks that the loaded class is a subtype of the given Class.
- *
- * @param className
- * The qualified name of the class to be loaded
- * @param asSubClass
- * The interface or class that the loaded class must implement or extend
- * @return
- * The loaded class, or null if the class doesn't exist or is invalid.
- * In such a case, the exception is logged.
- */
- public static <T> Class<? extends T> loadClass(String className, Class<T> asSubClass) {
- Class<?> theClass = loadClass(className);
- if(theClass == null) {
- return null;
- }
-
- try {
- Class<? extends T> typedClass = theClass.asSubclass(asSubClass);
- return typedClass;
- } catch (ClassCastException ex) {
- Activator.log.error(String.format("The class %1$s doesn't extend or implement %2$s", className, asSubClass.getName()), ex); //$NON-NLS-1$
- }
-
- return null;
- }
-
- /**
- * Creates a new instance of class denoted by the given className.
- * Checks that the instantiated class is a subtype of the given class
- *
- * @param className
- * The qualified name of the class to be instantiated
- * @param asSubclass
- * The interface or class that the loaded class must implement or extend
- * @return
- * An instance of the loaded class, or null if a valid instance
- * cannot be created. In such a case, the exception is logged.
- */
- public static <T> T newInstance(String className, Class<T> asSubclass) {
- Class<? extends T> typedClass = loadClass(className, asSubclass);
- if(typedClass == null) {
- return null;
- }
-
- return newInstance(typedClass);
- }
-
- /**
- * Returns a new Instance of the given class
- *
- * @param className
- * The qualified name of the Class to instantiate
- * @return
- * A new instance of the given class, or null if the class couldn't be
- * instantiated
- */
- public static Object newInstance(String className) {
- return newInstance(loadClass(className));
- }
-
- /**
- * Returns a new Instance of the given class
- *
- * @param theClass
- * The Class to instantiate
- * @return
- * A new instance of the given class, or null if the class couldn't be
- * instantiated
- */
- public static <T extends Object> T newInstance(Class<T> theClass) {
- if(theClass == null) {
- return null;
- }
-
- try {
- return theClass.newInstance();
- } catch (IllegalAccessException ex) {
- Activator.log.error("Cannot find a valid public constructor for the class " + theClass.getName(), ex); //$NON-NLS-1$
- } catch (InstantiationException ex) {
- Activator.log.error(String.format("The class %s cannot be instantiated.", theClass.getName()), ex); //$NON-NLS-1$
- }
-
- return null;
- }
-}
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