org.jboss.weld.bootstrap

Class WeldBootstrap

java.lang.Object

org.jboss.weld.bootstrap.WeldBootstrap

All Implemented Interfaces:

Bootstrap, CDI11Bootstrap

public class WeldBootstrap
extends Object
implements CDI11Bootstrap

Common bootstrapping functionality that is run at application startup and detects and register beans

Author:

Pete Muir, Ales Justin, Marko Luksa

Constructor Summary

Constructors

Constructor and Description
WeldBootstrap()

Method Summary

Methods

Modifier and Type	Method and Description
Bootstrap	deployBeans() Creates and deploys the application's beans: Creates and deploys the discovered beans Creates and deploys the built-in beans defined by the CDI specification Finally the AfterBeanDiscovery is event is fired
Bootstrap	endInitialization() Cleans up after the initialization
BeanManagerImpl	getManager(BeanDeploymentArchive beanDeploymentArchive) Get the manager used for this beanDeploymentArchive.
Iterable<Metadata<Extension>>	loadExtensions(ClassLoader classLoader) Load CDI extensions using the provided ClassLoader
BeansXml	parse(Iterable<URL> urls) Parse the specified URLs as a series of beans.xml file and merge the result.
BeansXml	parse(Iterable<URL> urls, boolean removeDuplicates) Parse the specified URLs as a series of beans.xml file and merge the result.
BeansXml	parse(URL url) Parse the specified URL as a beans.xml file.
void	shutdown() Causes the container to clean up and shutdown Before the contain is shutdown the BeforeShutdown event is fired
Bootstrap	startContainer(Environment environment, Deployment deployment) Creates the application container: Checks that the services required by the environment have been provided Adds container provided services Creates and initializes the built in contexts Creates the manager context
Bootstrap	startContainer(String contextId, Environment environment, Deployment deployment) Creates the application container: Checks that the services required by the environment have been provided Adds container provided services Creates and initializes the built in contexts Creates the manager
TypeDiscoveryConfiguration	startExtensions(Iterable<Metadata<Extension>> extensions) The container bootstrap sequence begins with initializing extensions.
Bootstrap	startInitialization() Starts the application container initialization process: Reads metadata from beans.xml and the Deployment service Starts the application context Starts the request context which lasts until Bootstrap.endInitialization() is called Discovers and creates Extension service providers Finally, the BeforeBeanDiscovery event is fired.
Bootstrap	validateBeans() Validates the deployment.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

WeldBootstrap

public WeldBootstrap()

Method Detail

startExtensions

public TypeDiscoveryConfiguration startExtensions(Iterable<Metadata<Extension>> extensions)

Description copied from interface: CDI11Bootstrap

The container bootstrap sequence begins with initializing extensions. The container performs the following actions:

The container fires the BeforeBeanDiscovery event which allows extensions to register scopes and stereotypes. The container combines the registered scopes and stereotypes with scopes associated with the built-in contexts and built-in stereotypes and makes the resulting set available through TypeDiscoveryConfiguration.getKnownBeanDefiningAnnotations()

Afterwards, an EE7-compatible integrator performs type discovery in the following locations:

• Library jars
• EJB jars or application client jars
• The WEB-INF/classes directory of a war
• Directories in the JVM classpath

These locations are referred to as available archives hereafter.

Next, the integrator builds the set of bean defining annotations. The set contains:

• The set of annotations returned from TypeDiscoveryConfiguration.getKnownBeanDefiningAnnotations()
• Every Java annotation discovered by the integrator that is annotated with NormalScope or Stereotype

The resulting set is referred to as bean defining annotations hereafter.

Next, the integrator processes available archives according to these rules. The rules are exclusive.

If an archive:

• contains the beans.xml file and the file does not contain the bean-discovery-mode attribute, or
• contains the beans.xml file and the value of the bean-discovery-mode attribute is set to all

this archive is an explicit bean archive.

If an archive:

• contains the beans.xml file and the bean-discovery-mode attribute is set to annotated, or
• does not contain the beans.xml file nor any implementation of the Extension interface but the archive contains types annotated with a bean defining annotation or session beans

this archive is an implicit bean archive.

If an archive:

• contains the beans.xml file and the bean-discovery-mode attribute is set to none, or
• does not contain the beans.xml file and contains an implementation of the Extension interface, or
• does not contain the beans.xml file and does not contain any types annotated with a bean defining annotation nor session bean

this archive is not a bean archive.

For each explicit bean archive the integrator creates an instance of BeanDeploymentArchive representing this archive. The BeanDeploymentArchive.getBeanClasses() method returns a collection of all types present within the archive. Filtering rules defined in BeansXml.getScanning() are not required to be applied by the integrator and are applied later on by Weld. The BeanDeploymentArchive.getEjbs() method returns a collection of EJB descriptors for EJBs present in the archive.

For each implicit bean archive the integrator creates an instance of BeanDeploymentArchive representing this archive. The BeanDeploymentArchive.getBeanClasses() of the bean archive returns all the types found in the archive which are annotated with a bean defining annotations or are Session bean definitions. Filtering rules ( BeansXml.getScanning()) are not required to be applied by the integrator. The BeanDeploymentArchive.getEjbs() method returns a collection of EJB descriptors for Session beans present in the archive.

Initially, the integrator does not need to create a BeanDeploymentArchive instance for an archive which is not a bean archive. Note that although these archives are ignored when building the initial collection of bean archives, the integrator may be required to create a BeanDeploymentArchive later upon a call to Deployment.loadBeanDeploymentArchive(Class). For example, when the method is called for a extension class that is deployed in an archive that is not a bean archive.

Specified by:

startExtensions in interface CDI11Bootstrap

Parameters:

extensions - discovered CDI extensions

Returns:

startContainer

public Bootstrap startContainer(Environment environment,
                       Deployment deployment)

Description copied from interface: Bootstrap

Creates the application container:

• Checks that the services required by the environment have been provided
• Adds container provided services
• Creates and initializes the built in contexts
• Creates the manager

context

Specified by:

startContainer in interface Bootstrap

Parameters:

environment - the environment in use, by default Environments.EE

deployment - the Deployment to be booted

startContainer

public Bootstrap startContainer(String contextId,
                       Environment environment,
                       Deployment deployment)

Description copied from interface: CDI11Bootstrap

Creates the application container:

• Checks that the services required by the environment have been provided
• Adds container provided services
• Creates and initializes the built in contexts
• Creates the manager

In addition to Bootstrap.startContainer(Environment, Deployment), this method allows an identifier (contextId) to be assigned to the container. This identifier will be used to identify this application when invoking Singleton methods.

Specified by:

startContainer in interface CDI11Bootstrap

Parameters:

contextId - the identifier of this application container instance

environment - the environment in use, by default Environments.EE

deployment - the Deployment to be booted

startInitialization

public Bootstrap startInitialization()

Description copied from interface: Bootstrap

Starts the application container initialization process:

• Reads metadata from beans.xml and the Deployment service
• Starts the application context
• Starts the request context which lasts until Bootstrap.endInitialization() is called
• Discovers and creates Extension service providers

Finally, the BeforeBeanDiscovery event is fired.

Specified by:

startInitialization in interface Bootstrap

deployBeans

public Bootstrap deployBeans()

Description copied from interface: Bootstrap

Creates and deploys the application's beans:

• Creates and deploys the discovered beans
• Creates and deploys the built-in beans defined by the CDI specification

Finally the AfterBeanDiscovery is event is fired

Specified by:

deployBeans in interface Bootstrap

validateBeans

public Bootstrap validateBeans()

Description copied from interface: Bootstrap

Validates the deployment. After validation, the AfterDeploymentValidation event is fired

Specified by:

validateBeans in interface Bootstrap

endInitialization

public Bootstrap endInitialization()

Description copied from interface: Bootstrap

Cleans up after the initialization

Specified by:

endInitialization in interface Bootstrap

getManager

public BeanManagerImpl getManager(BeanDeploymentArchive beanDeploymentArchive)

Description copied from interface: Bootstrap

Get the manager used for this beanDeploymentArchive. If #startContainer() has not been called, this method will return null. If the beanDeploymentArchive is not known to Weld (for example, it was not passed to the Weld as part of the Deployment, or has not yet been requested by Deployment.loadBeanDeploymentArchive(Class)), null will be returned.

Specified by:

getManager in interface Bootstrap

Returns:

the manager or null if not yet available or not found.

shutdown

public void shutdown()

Description copied from interface: Bootstrap

Causes the container to clean up and shutdown Before the contain is shutdown the BeforeShutdown event is fired

Specified by:

shutdown in interface Bootstrap

parse

public BeansXml parse(Iterable<URL> urls)

Description copied from interface: Bootstrap

Parse the specified URLs as a series of beans.xml file and merge the result. Duplicate entries are not removed.

Specified by:

parse in interface Bootstrap

Returns:

the BeansXml data structure which represents the URL

parse

public BeansXml parse(Iterable<URL> urls,
             boolean removeDuplicates)

Description copied from interface: Bootstrap

Parse the specified URLs as a series of beans.xml file and merge the result.

Specified by:

parse in interface Bootstrap

Parameters:

urls - the urls to parse

removeDuplicates - whether duplicate entries (alternatives, interceptors, etc) are removed

Returns:

the BeansXml data structure which represents the URL

parse

public BeansXml parse(URL url)

Description copied from interface: Bootstrap

Parse the specified URL as a beans.xml file.

Specified by:

parse in interface Bootstrap

Parameters:

url - the url to parse

Returns:

the BeansXml data structure which represents the URL

loadExtensions

public Iterable<Metadata<Extension>> loadExtensions(ClassLoader classLoader)

Description copied from interface: Bootstrap

Load CDI extensions using the provided ClassLoader

Specified by:

loadExtensions in interface Bootstrap

Parameters:

classLoader - the ClassLoader to use to load the extensions