/**
* Copyright 2010 Marko Lavikainen
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.contextfw.web.application.internal.component;
import java.lang.reflect.Field;
import java.security.AccessController;
import java.security.PrivilegedAction;
import net.contextfw.web.application.WebApplicationException;
import net.contextfw.web.application.internal.InternalWebApplicationException;
final class FieldPropertyAccess<T> implements PropertyAccess<T> {
private final Field field;
public FieldPropertyAccess(final Field field) {
this.field = field;
AccessController.doPrivileged(new PrivilegedAction<Void>() {
@Override
public Void run() {
field.setAccessible(true);
return null;
}
});
}
@SuppressWarnings("unchecked")
@Override
public T getValue(Object obj) {
try {
return (T) field.get(obj);
} catch (IllegalArgumentException e) {
if (WebApplicationException.class.isAssignableFrom(e.getCause().getClass())) {
throw (RuntimeException) e.getCause();
} else {
throw new InternalWebApplicationException(e);
}
} catch (IllegalAccessException e) {
if (WebApplicationException.class.isAssignableFrom(e.getCause().getClass())) {
throw (RuntimeException) e.getCause();
} else {
throw new InternalWebApplicationException(e);
}
}
}
}