public JBossInjectionProvider() 
{
    
        try {
            this.namingContext = new InitialContext();
        } catch (Exception e) {
            LOG.warn(NAMING_DISABLED, e);
        }
}

Uses the default naming context for injection of resources into managed beans.

 protected JBossInjectionProvider(Context namingContext) 
{
        if (namingContext == null) {
            LOG.warn(NAMING_DISABLED);
        }
        this.namingContext = namingContext;
}

This constructor allows a subclass to override the default naming context.

Parameters:

namingContext - The naming context to use for injection of managed beans. If this param is null then injection of resources will be disabled and JBoss will only call @PostConstruct and

PreDestroy: methods. -

 public  void inject(Object managedBean) throws InjectionProviderException 
{
        if (this.namingContext != null) {
            try {
                // Initialize fields annotations
                Field[] fields = managedBean.getClass().getDeclaredFields();
                for (int i = 0; i <  fields.length; i++) {
                    if (fields[i].isAnnotationPresent(Resource.class)) {
                        Resource annotation = (Resource) fields[i].getAnnotation(Resource.class);
                        lookupFieldResource(namingContext, managedBean, fields[i], annotation.name());
                    }
                    if (fields[i].isAnnotationPresent(EJB.class)) {
                        EJB annotation = (EJB) fields[i].getAnnotation(EJB.class);
                        lookupFieldResource(namingContext, managedBean, fields[i], annotation.name());
                    }
                    if (fields[i].isAnnotationPresent(WebServiceRef.class)) {
                        WebServiceRef annotation = 
                            (WebServiceRef) fields[i].getAnnotation(WebServiceRef.class);
                        lookupFieldResource(namingContext, managedBean, fields[i], annotation.name());
                    }
                    if (fields[i].isAnnotationPresent(PersistenceContext.class)) {
                        PersistenceContext annotation = 
                            (PersistenceContext) fields[i].getAnnotation(PersistenceContext.class);
                        lookupFieldResource(namingContext, managedBean, fields[i], annotation.name());
                    }
                    if (fields[i].isAnnotationPresent(PersistenceUnit.class)) {
                        PersistenceUnit annotation = 
                            (PersistenceUnit) fields[i].getAnnotation(PersistenceUnit.class);
                        lookupFieldResource(namingContext, managedBean, fields[i], annotation.name());
                    }
                }
                // Initialize methods annotations
                Method[] methods = managedBean.getClass().getDeclaredMethods();
                for (int i = 0; i <  methods.length; i++) {
                    if (methods[i].isAnnotationPresent(Resource.class)) {
                        Resource annotation = (Resource) methods[i].getAnnotation(Resource.class);
                        lookupMethodResource(namingContext, managedBean, methods[i], annotation.name());
                    }
                    if (methods[i].isAnnotationPresent(EJB.class)) {
                        EJB annotation = (EJB) methods[i].getAnnotation(EJB.class);
                        lookupMethodResource(namingContext, managedBean, methods[i], annotation.name());
                    }
                    if (methods[i].isAnnotationPresent(WebServiceRef.class)) {
                        WebServiceRef annotation = 
                            (WebServiceRef) methods[i].getAnnotation(WebServiceRef.class);
                        lookupMethodResource(namingContext, managedBean, methods[i], annotation.name());
                    }
                    if (methods[i].isAnnotationPresent(PersistenceContext.class)) {
                        PersistenceContext annotation = 
                            (PersistenceContext) methods[i].getAnnotation(PersistenceContext.class);
                        lookupMethodResource(namingContext, managedBean, methods[i], annotation.name());
                    }
                    if (methods[i].isAnnotationPresent(PersistenceUnit.class)) {
                        PersistenceUnit annotation = 
                            (PersistenceUnit) methods[i].getAnnotation(PersistenceUnit.class);
                        lookupMethodResource(namingContext, managedBean, methods[i], annotation.name());
                    }
                }
            } catch (Exception e) {
                LOG.error("Injection failed on managed bean.", e);
            }
        }
}

Inject naming resources into a managed bean and then call methods annotated with @PostConstruct.

 public  void invokePostConstruct(Object managedBean) throws InjectionProviderException 
{
        try {
            Method[] methods = managedBean.getClass().getDeclaredMethods();
            Method postConstruct = null;
            for (int i = 0; i <  methods.length; i++) {
                if (methods[i].isAnnotationPresent(PostConstruct.class)) {
                    if ((postConstruct != null) 
                            || (methods[i].getParameterTypes().length != 0)
                            || (Modifier.isStatic(methods[i].getModifiers())) 
                            || (methods[i].getExceptionTypes().length  > 0)
                            || (!methods[i].getReturnType().getName().equals("void"))) {
                        throw new IllegalArgumentException("Invalid PostConstruct annotation");
                    }
                    postConstruct = methods[i];
                }
            }
            // At the end the postconstruct annotated 
            // method is invoked
            if (postConstruct != null) {
                boolean accessibility = postConstruct.isAccessible();
                postConstruct.setAccessible(true);
                postConstruct.invoke(managedBean);
                postConstruct.setAccessible(accessibility);
            }
        } catch (Exception e) {
            LOG.error("PostConstruct failed on managed bean.", e);
        }
}

Call methods on a managed bean that are annotated with @PostConstruct.

 public  void invokePreDestroy(Object managedBean) throws InjectionProviderException 
{
        try {
            Method[] methods = managedBean.getClass().getDeclaredMethods();
            Method preDestroy = null;
            for (int i = 0; i <  methods.length; i++) {
                if (methods[i].isAnnotationPresent(PreDestroy.class)) {
                    if ((preDestroy != null) 
                            || (methods[i].getParameterTypes().length != 0)
                            || (Modifier.isStatic(methods[i].getModifiers())) 
                            || (methods[i].getExceptionTypes().length  > 0)
                            || (!methods[i].getReturnType().getName().equals("void"))) {
                        throw new IllegalArgumentException("Invalid PreDestroy annotation");
                    }
                    preDestroy = methods[i];
                }
            }
            // At the end the postconstruct annotated 
            // method is invoked
            if (preDestroy != null) {
                boolean accessibility = preDestroy.isAccessible();
                preDestroy.setAccessible(true);
                preDestroy.invoke(managedBean);
                preDestroy.setAccessible(accessibility);
            }
        } catch (Exception e) {
            LOG.error("PreDestroy failed on managed bean.", e);
        }
}

Call methods on a managed bean that are annotated with @PreDestroy.

 protected static  void lookupFieldResource(Context context,
    Object instance,
    Field field,
    String name) throws NamingException, IllegalAccessException 
{
    
        Object lookedupResource = null;
        boolean accessibility = false;
        if ((name != null) &&
                (name.length()  > 0)) {
            lookedupResource = context.lookup(name);
        } else {
            lookedupResource = context.lookup(instance.getClass().getName() + "/" + field.getName());
        }
        accessibility = field.isAccessible();
        field.setAccessible(true);
        field.set(instance, lookedupResource);
        field.setAccessible(accessibility);
}

Inject resources in specified field.

 protected static  void lookupMethodResource(Context context,
    Object instance,
    Method method,
    String name) throws NamingException, InvocationTargetException, IllegalAccessException 
{
        
        if (!method.getName().startsWith("set") 
                || method.getParameterTypes().length != 1
                || !method.getReturnType().getName().equals("void")) {
            throw new IllegalArgumentException("Invalid method resource injection annotation");
        }
        Object lookedupResource = null;
        boolean accessibility = false;
        if ((name != null) &&
                (name.length()  > 0)) {
            lookedupResource = context.lookup(name);
        } else {
            lookedupResource = 
                context.lookup(instance.getClass().getName() + "/" + method.getName().substring(3));
        }
        accessibility = method.isAccessible();
        method.setAccessible(true);
        method.invoke(instance, lookedupResource);
        method.setAccessible(accessibility);
}

Inject resources in specified method.