Package org.apache.webbeans.resource.spi.se

Source Code of org.apache.webbeans.resource.spi.se.ResourceServiceImpl

/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with this
* work for additional information regarding copyright ownership. The ASF
* licenses this file to You 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 org.apache.webbeans.resource.spi.se;

import java.lang.reflect.Field;

import javax.annotation.Resource;
import javax.naming.InitialContext;
import javax.persistence.PersistenceContext;
import javax.persistence.PersistenceUnit;

import org.apache.webbeans.exception.WebBeansException;
import org.apache.webbeans.logger.WebBeansLogger;
import org.apache.webbeans.resource.spi.ResourceService;

public class ResourceServiceImpl implements ResourceService
{
    private static InitialContext context = null;
   
    private static WebBeansLogger logger = WebBeansLogger.getLogger(ResourceServiceImpl.class);
   
    static
    {
        try
        {
            context = new InitialContext();
           
        }catch(Exception e)
        {
            throw new ExceptionInInitializerError(e);
        }
    }

    @Override
    public Object getResource(Field field) throws WebBeansException
    {
        Object obj = null;
       
        JPAServicePersistenceImpl impl = new JPAServicePersistenceImpl();
               
        if (field.isAnnotationPresent(PersistenceContext.class))
        {
            PersistenceContext context = field.getAnnotation(PersistenceContext.class);           
            obj = impl.getPersistenceContext(context.unitName());
        }
       
        else if (field.isAnnotationPresent(PersistenceUnit.class))
        {
            PersistenceUnit annotation = field.getAnnotation(PersistenceUnit.class);
           
            obj = impl.getPersistenceUnit(annotation.unitName());
        }
        else if(field.isAnnotationPresent(Resource.class))
        {
            Resource resource = field.getAnnotation(Resource.class);           
            try
            {
                obj = context.lookup("java:/comp/env/"+ resource.name());
            }
            catch(Exception e)
            {
                logger.error("Unable to inject resource for :  " + resource );
            }            
        }       
       
        return obj;
    }

}
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