/*
* Copyright (c) 1998-2010 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson;
*/
package com.caucho.config.program;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.logging.Logger;
import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.event.Event;
import com.caucho.config.ConfigException;
import com.caucho.config.event.EventImpl;
import com.caucho.config.inject.InjectManager;
import com.caucho.util.L10N;
public class FieldEventProgram extends ConfigProgram
{
private static final L10N L = new L10N(FieldEventProgram.class);
private static final Logger log
= Logger.getLogger(FieldEventProgram.class.getName());
private InjectManager _manager;
private Field _field;
private Class _eventType;
private Annotation []_bindings;
public FieldEventProgram(InjectManager manager,
Field field,
Annotation []bindings)
{
_manager = manager;
_field = field;
field.setAccessible(true);
ArrayList<Annotation> bindingList = new ArrayList<Annotation>();
for (Annotation ann : bindings) {
/*
if (ann.annotationType().equals(Observable.class))
continue;
*/
bindingList.add(ann);
}
_bindings = new Annotation[bindingList.size()];
bindingList.toArray(_bindings);
if (! field.getType().equals(Event.class))
throw new ConfigException(L.l("{0}:{1} is an invalid @Observable because it is not an javax.webbeans.Event",
field.getDeclaringClass().getSimpleName(),
field.getName()));
Class eventType = null;
Type type = field.getGenericType();
if (! (type instanceof ParameterizedType)) {
throw new ConfigException(L.l("{0}:{1} is an invalid @Observable because the Event must be parameterized",
field.getDeclaringClass().getSimpleName(),
field.getName()));
}
ParameterizedType pType = (ParameterizedType) type;
_eventType = (Class) pType.getActualTypeArguments()[0];
}
@Override
public <T> void inject(T bean, CreationalContext<T> env)
{
Object value = new EventImpl(_manager, _eventType, _bindings);
try {
_field.set(bean, value);
} catch (IllegalArgumentException e) {
throw new ConfigException(ConfigException.loc(_field) + L.l("Can't set field value '{0}'", value), e);
} catch (Exception e) {
throw new ConfigException(ConfigException.loc(_field) + e.toString(), e);
}
}
}