/*
 * Copyright (c) 1998-2011 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 com.caucho.config.*;
import com.caucho.config.annotation.StartupType;
import com.caucho.config.inject.CreationalContextImpl;
import com.caucho.config.inject.InjectManager;
import com.caucho.config.inject.InjectManager.ReferenceFactory;
import com.caucho.config.program.*;
import com.caucho.config.reflect.AnnotatedTypeImpl;
import com.caucho.config.type.*;
import com.caucho.config.xml.XmlConfigContext;
import com.caucho.util.*;
import com.caucho.xml.QName;

import java.util.*;
import java.util.logging.*;
import java.lang.reflect.*;
import java.lang.annotation.*;

import javax.annotation.*;
import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.inject.spi.AnnotatedConstructor;
import javax.enterprise.inject.spi.AnnotatedParameter;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.BeanManager;

import org.w3c.dom.Node;

/**
 * Custom bean configured by namespace
 */
public class ValueArg<T> extends Arg<T> {
  private static final L10N L = new L10N(ValueArg.class);
  
  private InjectManager _beanManager;
  private Type _type;
  private ConfigType<T> _configType;

  private ReferenceFactory<T> _factory;
  private RuntimeException _bindException;

  public ValueArg(Type type)
  {
    _beanManager = InjectManager.create();
    
    _type = type;
    _configType = (ConfigType<T>) TypeFactory.getType(_type);
  }

  @Override
  public void bind()
  {
    if (_factory == null) {
      HashSet<Annotation> bindings = new HashSet<Annotation>();
      
      try {
        _factory = (ReferenceFactory<T>) _beanManager.getReferenceFactory(_type, bindings, null);
      } catch (RuntimeException e) {
        _bindException = e;
      }
    }
  }
    
  @Override
  public Object eval(CreationalContext<T> env)
  {
    if (_factory == null && _bindException == null)
      bind();

    if (_factory != null)
      return _factory.create(null, (CreationalContextImpl) env, null);
    else
      throw _bindException;
  }
}