org.jboss.ejb3.singleton jboss-ejb3-singleton-parent 1.0.0-alpha-28 ../pom.xml 4.0.0 org.jboss.ejb3.singleton jboss-ejb3-singleton-spi jar JBoss EJB 3.1+ @Singleton SPI http://www.jboss.org SPI for @Singleton 1.0.0-alpha-2 org.jboss.ejb3.container jboss-ejb3-container-spi ${version.ejb3.container.spi} junit junit