/**
* OLAT - Online Learning and Training<br>
* http://www.olat.org
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); <br>
* you may not use this file except in compliance with the License.<br>
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing,<br>
* software distributed under the License is distributed on an "AS IS" BASIS,
* <br>
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
* See the License for the specific language governing permissions and <br>
* limitations under the License.
* <p>
* Copyright (c) 2009 frentix GmbH, www.frentix.com
* <p>
*/
package org.olat.core.gui.control.creator;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import org.olat.core.gui.UserRequest;
import org.olat.core.gui.control.Controller;
import org.olat.core.gui.control.WindowControl;
import org.olat.core.logging.AssertException;
/**
* Description:<br>
* This Controller creator can be used to instantiate an ActionExtension in
* olat_extensions.xml which uses a Factory to get a controller. Needed
* arguments: - factoryName name of the factory class - factoryMethod Method to
* invoke on factory, should return a Controller
*
* <P>
* Initial Date: 30.03.2009 <br>
*
* @author Roman Haag, roman.haag@frentix.com, www.frentix.com
*/
public class FactoryControllerCreator extends AutoCreator implements ControllerCreator {
private static final Class[] ARGCLASSES = new Class[] { UserRequest.class, WindowControl.class };
private String factoryName;
private String factoryMethod;
public FactoryControllerCreator() {
super();
}
/**
* @see org.olat.core.gui.control.creator.ControllerCreator#createController(org.olat.core.gui.UserRequest,
* org.olat.core.gui.control.WindowControl)
*/
public Controller createController(UserRequest lureq, WindowControl lwControl) {
Exception re = null;
try {
Object o = null;
Class<?> cclazz = Thread.currentThread().getContextClassLoader().loadClass(factoryName);
try {
Constructor<?> con = cclazz.getConstructor(ARGCLASSES);
o = con.newInstance(new Object[] { lureq, lwControl });
} catch (NoSuchMethodException e) {
// constructor does not exist with arguments ARGCLASSES => try invoking
// method without instantiated class (o = null).
}
Method method = cclazz.getMethod(factoryMethod, ARGCLASSES);
Object result = method.invoke(o, new Object[] { lureq, lwControl });
Controller c = (Controller) result;
return c;
} catch (ClassNotFoundException e) {
re = e;
} catch (SecurityException e) {
re = e;
} catch (NoSuchMethodException e) {
re = e;
} catch (IllegalArgumentException e) {
re = e;
} catch (IllegalAccessException e) {
re = e;
} catch (InvocationTargetException e) {
re = e;
} catch (InstantiationException e) {
re = e;
} finally {
if (re != null) { throw new AssertException("could not create controller via reflection. factoryName: " + factoryName + " method: "
+ factoryMethod, re); }
}
return null;
}
/**
* @return Returns the factoryName.
*/
public String getFactoryName() {
return factoryName;
}
/**
* @param factoryName The factoryName to set.
*/
public void setFactoryName(String factoryName) {
this.factoryName = factoryName;
}
/**
* @return Returns the factoryMethod.
*/
public String getFactoryMethod() {
return factoryMethod;
}
/**
* @param factoryMethod The factoryMethod to set.
*/
public void setFactoryMethod(String factoryMethod) {
this.factoryMethod = factoryMethod;
}
public String getClassName() {
return getFactoryName();
}
}