Unit Objectives This unit will discuss: •J2EE 1.4 Overview –Enterprise Application Packaging and files –Servlet 2.4 –JSP 2.0 –JCA 1.5 –EJB 2.1 •Web Services
Application Programming Model Support •Supported J2EE Application versions in V6 Application Server –J2EE 1.4 –J2EE 1.3 –J2EE 1.2 •Makes a much better migration story by allowing your existing J2EE 1.2 or 1.3 applications to run in V6 Application Server
J2EE 1.4 Web Services and XML support
ISV Enablement
Standards / Portability - XML Schema definitions for all deployment descriptors JAX-P 1.2 - New properties for XML parsers JAX-R - XML registry API JAX-RPC - APIs for representing WSDL-based services as RPCs in Java (and vice-versa) JSR 109 - Web services programming and deployment model SAAJ 1.1 - SOAP Attachments API for Java
JMX 1.2 / JSR-077 (J2EE Management) Notification emitters, and standard patterns Information model representing J2EE application server concepts JSR-088 (J2EE Deployment) XML-based deployment interfaces for J2EE JACC 1.0 Java Authorization Contract with Containers APIs for registering J2EE component authorization policies
Pluggable Messaging EJB 2.1 Typed message beans (used for any inbound JCA including pluggable JMS provider) Timer service Web service end-point support JMS 1.1 Unification of point-to-point and pub-sub interfaces J2CA 1.5 In-bound connections (supporting pluggable JMS provider, generalized for other types) RA lifecycle support Work manager (threads for resource adapters)
Other Servlet 2.4 Extensible deployment descriptors Request/response listeners JSP 2.0 Expression Language Simple Tag Extension JDBC 3.0 Meta data and cursor support JavaMail 1.3 updates
J2EE 1.4 Platform Architecture
Source: J2EE 1.4 Specification
J2EE 1.4 New Features Overview •Deployment Descriptors –Defined as XML schemas instead of DTDs •Major new features in: –Servlet 2.4 and JSP 2.0 •Expression Language support in JSP 2.0
–EJB 2.1 •EJB Timer Service •Support for Web Services •Extended Message-Driven beans (MDBs)
–JCA 1.5 •Inbound communication using the extended MDBs
Deployment Descriptor Runs in Application Client Container
J2EE 1.4 Packaging Changes •Web services now defined in J2EE application deployment descriptors –Eliminate webservicesclient.xml –References to Web services are contained in the web.xml, ejb-jar.xml, and application-client.xml files as service-refs –No changes to IBM specific Web services Client bindings or extensions files
Packaging Files and Changes
Installed RARs Schema Map Schema Attributes
EJB Module JAR file
Table Creation
EJB DD EJBs
Web Services Client DD
WSDL Java Mapping Files
HTML, GIFs, etc.
WS IBM Bind/Ext WS Client IBM Bind/Ext
Client Module JAR file
IBM Bind/Ext
Client DD
IBM Bind Web Services DD
Servlet JSP
IBM Bind/Ext
was.policy (Java2 Sec)
Web Module WAR file
Web DD Web Services DD
IBM Bind/Ext
Application DD
J2EE Application EAR file
WSDL Java Mapping Files
WS IBM Bind/Ext WS Client IBM Bind/Ext
Web Services Client DD
WS Client IBM Bind/Ext
WSDL Java Mapping Files
Client Classes
Web Services Client DD
DD = Deployment Descriptor WS = Web Services Bind = Binding File Ext = Extension File = WS related file = File removed in J2EE 1.4
Servlet 2.4 New Features Overview •Servlet 2.4 –RequestDispatcher –Filters –Listeners –ServletRequest –Sessions –Internationalization
Sessions – New Features •Session timeout can be specified in the deployment descriptor. •The container will define its own timeout, if it is not specified in deployment descriptor. –WebSphere’s default is 30 minutes •The value specified in the deployment descriptor will override the value specified by WebSphere. •Use AST’s deployment descriptor editor for Dynamic Web Projects, General page. 60 Timeout after 60 minutes
Will never timeout
0
JCA 1.5 – New Features •Inbound Communication –Allows external EIS systems to communicate with the application components deployed on the Application Server •Transaction Inflow –Allows a Resource Adapter to propagate an existing two-phase transaction into an Application Server •Message Inflow –Generic contract to plug-in a variety of Message Providers into an Application Server
New Features Overview (continued) •Management and Deployment APIs –JSR 77 – J2EE Management 1.0 API defines J2EE management –JSR 88 – J2EE Deployment 1.1 API provides a standard API for deploying J2EE applications •Security –Java Authorization Service Provider Contract for Containers (JACC) •Allows custom authorization service providers to be plugged into the Application Server
– JSR 115 : Java Authorization Contract for Containers
EJB Timer Service •EJBs use the container’s Timer Service implementation to create and set Timer objects •To receive notifications of Timeout events, each enterprise bean should implement the TimedObject interface •When the Timer expires, the container’s Timer Service invokes the associated EJB’s ejbTimeOut() method
EJB Container
EJBContext 1. getTimerService()
Enterprise Java Bean
2. createTimer(…)
TimerService
3. ejbTimeout(…)
implements TimedObject Interface
Implemented by the EJB Container
EJB 2.1 and Web Services •External Web Services can now be invoked from an EJB using service references •Defines a new EJB interface called the endpoint interface to expose an EJB’s functionality as a Web Service •Web Services use the SOAP stateless protocol, and hence EJB 2.1 allows the usage of only the stateless session bean as a Web Service •JAX-RPC is used to enable accessing a stateless session bean, using SOAP protocol
Changes in Web Services WebSphere V4 and V5.0
WebSphere V5.02, V5.1
Apache SOAP
JAX-RPC (JSR-101) 1.0
The programming model, deployment model and engine
New standard API for programming Web services in Java
Proprietary APIs
JSR-109 1.0
WebSphere V6
JAX-RPC (JSR-101) 1.1
Additional type support xsd:list Fault support Name collision rules New APIs for creating Services isUserInRole()
JSR-109 - WSEE
Because Java standards for Web services didn’t exist
New J2EE deployment model for Java Web services
Not WS-I compliant
WS-Security
Moved to J2EE 1.4 schema types Migration of web services client DD moving to appropriate container DDs Handlers support for EJBs Service endpoint interface (SEI) is a peer to LI/RI
Extensions added
SAAJ 1.2
SAAJ 1.1
WS-I Basic Profile 1.0 Profile compliance
UDDI4J version 2.0 (client) Apache Soap 2.3 enhancements The engine is a new high performance SOAP engine supporting both HTTP and JMS
APIs for manipulating SOAP XML messages SAAJ infrastructure now extends DOM (easy to cast to DOM and use)
WS-Security WSS 1.0
Following WS-I Security Profile
WS-I Basic Profile 1.1 Attachments support
WS-TX (WS transactions) JAXR support UDDI V3 support
Includes both the registry implementation and the client API library Client UDDI V3 API different than JAXR (exposes more native UDDI V3 functionality not available in JAXR)
Unit Summary •Building on the latest Java standards and Web Services in an integrated development and deployment environment to reduce time to value. •Introducing J2EE 1.4 while supporting 1.3 and 1.2. •Continuing investment in emerging standards.
ÅDeployer. â¢Deploys, configures and runs EJBs and Web applications. Application. Assembler. Deployment Environment. Node. Application Server JVM. Admin.
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