fr.hhdev.ocelot.web.CdiBootstrap Maven / Gradle / Ivy
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package fr.hhdev.ocelot.web;
import java.lang.annotation.Annotation;
import java.util.Set;
import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.inject.Default;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.BeanManager;
import javax.enterprise.util.AnnotationLiteral;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
* @author hhfrancois
*/
public abstract class CdiBootstrap {
private final static Logger logger = LoggerFactory.getLogger(CdiBootstrap.class);
private static BeanManager beanManager = null;
public BeanManager getBeanManager() {
if (null == beanManager) {
try {
InitialContext initialContext = new InitialContext();
beanManager = (BeanManager) initialContext.lookup("java:comp/env/BeanManager");
} catch (NamingException e) {
}
}
return beanManager;
}
public T getBean(Class cls) {
BeanManager bm = getBeanManager();
logger.info("Generate bean from {}, cause native injection doesn't work.");
Set> beans = bm.getBeans(cls, DEFAULT_AT);
Bean b = beans.iterator().next();
final CreationalContext context = bm.createCreationalContext(b);
return cls.cast(bm.getReference(b, b.getBeanClass(), context));
}
private static final Annotation DEFAULT_AT = new AnnotationLiteral() {
private static final long serialVersionUID = 1L;
};
}