Java EE 7: Developing for the Cloud at Java Day, Istanbul, May 2012

Main sponsorThe Java EE 7 Pla,orm: Developing for the Cloud Arun Gupta, Java EE & GlassFish Guy blogs.oracle.com/arungupta, @arungupta

The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle s products remains at the sole discretion of Oracle.2 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Java EE 6 – Key Statistics •  40+ Million Java EE 6 Component Downloads •  #1 Choice for Enterprise Developers •  #1 Application Development Platform •  Fastest implementation of a Java EE release4 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Top Ten Features in Java EE 6 1.  EJB packaging in a WAR 2.  Servlet and CDI extension points 3.  Optional web.xml! 4.  Type-safe dependency injection 5.  CDI Events 6.  JSF standardizing on Facelets 7.  EJBContainer API 8.  @Schedule! 9.  EJB No Interface View 10. Web Profile5 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Java EE 7 and 8 – Focus Areas Cloud Modularity HTML5•  Provisioning •  Building on Jigsaw •  Emerging Web Standards require a•  Elastic & Autonomic •  Focus on OSGi interop programming model Scalability •  Supporting Profiles & •  JSON, WebSockets,•  Multi-Tenancy Modular Applications off-line, APIs & DOM 8 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Java EE 7 Focus: Platform as a Service •  Next logical step for Java EE –  J2EE à Java EE 6 : The Java EE Platform provides services –  Java EE 7 : The Java EE Platform IS a service •  PaaS support entails evolutionary change •  Basic form of SaaS •  Provide way for customers and users to leverage public, private, and hybrid clouds9 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Java EE 7 PaaS Roadmap •  Define new platform roles to accommodate PaaS model •  Add metadata –  For service provisioning and configuration –  For QoS, elasticity –  For sharing of applications and resources –  For (re)configurability and customization •  Add useful APIs for cloud environment –  JAX-RS client API, Caching API, State Management, JSON,… •  Extend existing APIs with support for multi-tenancy10 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Roles Developer PaaS Provider PaaS Customer/ JVM JVM JVM JVM JVM JVM JVM JVM JVM Tenant Machine Machine Machine PaaS Product Provider JVM JVM JVM JVM JVM JVM JVM JVM JVMDeployer Machine Machine Machine PaaS Account Tenant 1 Tenant 2 Tenant 3 Manager Application Submitter PaaS Administrator Application Administrator 11 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Existing Java EE model Database 1 Provision and Initialize Service •  Configure Java EE resources – JDBC, JMS etc LDAP Service •  Deploy Application EAR 2 Provision and Initialize Messaging 3 Provision and Initialize Service Application 4 Provision and Initialize Container 5 Deploy Application (EAR/ GAR/SAR …)12 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Java EE 7 Model: Auto-Provision Services from Application Dependencies•  Provision and deploy application 1 Provision and Initialize Cloud Administration Serviceresources (e.g. LDAP stripe, datasource instantiation and Database Serviceconnection …) 2 Provision and Initialize•  Extensible Deployment Models LDAP Supporting Multiple Frameworks 3 Provision and Initialize Service •  Spring, Seam, Play … Messaging 4 Provision and Initialize Service Application 5 Deploy Application (EAR/ GAR/SAR …) Container13 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Services •  Cloud apps consume services –  Persistence, queueing, mail, caching, … •  Service metadata facilitates ease of use when deploying into the cloud @DataSourceDefinition(! name=“java:app/jdbc/myDB”,! className=“oracle.jdbc.pool.OracleDataSource”,! isolationLevel=TRANSACTION_REPEATABLE_READ,! initialPoolSize=5! ) !14 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Services •  Cloud apps consume services –  Persistence, queueing, mail, caching, … •  Service metadata facilitates ease of use when deploying into the cloud @JMSConnectionFactoryDefinition(  name=“java:app/myJMSConnectionFactory”, className=“javax.jms.QueueConnectionFactory”  resourceAdapterName=“myJMSRA”) ! ! @JMSDestinationDefinition(  name=“java:app/myQueue”,  className=“javax.jms.Queue”  destinationName=“myQueue1”)!15 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Services •  Cloud apps consume services –  Persistence, queueing, mail, caching, … •  Service metadata facilitates ease of use when deploying into the cloud @MailSessionDefinition(! name=“java:app/mailSession”,  host=“example.com”  from=“MyService@example.com”! ) !16 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Services •  Cloud apps consume services –  Persistence, queueing, mail, caching, … •  Service metadata facilitates ease of use when deploying into the cloud @ConnectorResourceDefinition(! name=“java:app/myCustomConnector”,! className=“com.extraServices.CustomConnector.class”,! properties= {…}! ) !17 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Elasticity Java EE 7 Focus: Move the Bar Right Elasticity Continuum Java EE Cluster Elastic Cluster Elastic Cluster Capacity Ca on DemandSingle node Java EE Multi-Node Dynamic Self AdjustingNon-Elastic Multi-Instance Clustering SLA Driven Elasticity •  Service Levels •  Minimum and Maximum Instances •  Futures – Self Adjustment, Capacity On Demand 18 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Example Scenario “A software company writes an application, submits it to a PaaS provider, then any number of tenants sign up for the application, deploy it, their end users access it”19 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Walkthrough (11) ExtraServices DiabloCloud End-‐Users Access the application Provisioned and Deployed App Administrator Administers the application30 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Walkthrough (12) ExtraServices DiabloCloud System Administrator Monitors End-‐Users Access the application Provisioned and Deployed App Administrator Administers the application31 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Conference Planning in the CloudJava EE Application JSF JPA Deploy Services EJB Metadata <glassfish-services>  <service-description init-type="LB" name="ConferencePlanner-lb">  <template id="LBNative"/>  <configurations>  <configuration name="https-port" value="50443"/>  <configuration name="ssl-enabled" value="false"/>  <configuration name="http-port" value="50080"/>  </configurations></service-description>  <service-description init-type="JavaEE" name="ConferencePlanner">  <characteristics>  <characteristic name="service-type" value="JavaEE"/>  </characteristics>  <configurations>  <configuration name="max.clustersize" value="4"/>  <configuration name="min.clustersize" value="2"/>  </configurations>  </service-description>! . . .  </glassfish-services>!33 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Multi-tenancy in Java EE 7 •  Support for separate isolated instances of the same app for different tenants –  One application instance per tenant –  Tenants correspond to units of isolation –  Multitenant apps are declared as such –  Each instance customized and deployed for a single tenant –  Limited form of SaaS •  Mapping to tenant done by the container •  Tenant id available to application –  E.g., under java:comp/tenantId!35 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Java EE 7 Is Not Just Cloud-y •  Alignment of ManagedBeans across CDI, EJB, JSF, … –  POJO à ManagedBean à Enterprise JavaBean –  Extension of container-managed transactions beyond EJB •  Further simplifications for ease-of-development –  JAX-RS 2.0 Client API, hypermedia, bean validation, … –  JMS 2.0 focus on ease-of-development –  Expanded use of dependency injection –  Expanded service metadata; improved configuration •  Pruning –  EJB CMP and BMP, JAX-RPC, Deployment API •  Update to Web Profile36 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Java EE 7 – Candidate JSRs Web JAX-RS JSF 2.2 Jcache 1.0 Container EL 3.0 (JSR 107) CDI Extensions 2.0 JSP 2.2 Extensions Bean Validation 1.1 Concurrency Servlet 3.1 Utilities 1.0 (JSR 236) State CDI 1.1 / Interceptors 1.1 / JSR 250 1.1 Management 1.0 (JSR 350) Batch Managed Beans 1.0 EJB 3.2 Processing 1.0 (JSR 352) JSON 1.0 JPA 2.1 JTA 1.1 JMS 2.0 (JSR 353)37 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Java EE 7 Early Draft •  Requires Java SE 7 •  Added new roles •  Resource definition metadata –  DataSourceDefinition, JMSConnectionFactoryDefinition, JMSDestinationDefinition, MailSessionDefinition, ConnectorResourceDefinition! –  Pre-provisioned or shared resource38 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Java EE 7 Early Draft •  Default Data Source java:comp/defaultDataSource! •  Default JMS Connection Factory java:comp/ defaultJMSConnectionFactory! •  Tenant Identifier: java:comp/tenantId! •  Made optional –  EJB Entity Beans, EJB QL, JAX-RPC, Deployment API, JAXR39 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Java Persistence API 2.1 •  @NamedStoredProcedureQuery, StoredProcedureQuery! •  Bulk update/delete using Criteria! •  User-defined functions using FUNCTION! •  Persistence Context Synchronization40 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Java API for RESTful Web Services 2.0 •  Client-side API •  Validation •  Hypermedia •  Alignment with CDI •  Server-side content negotiation (qs) •  Filters and Entity Interceptors •  Client-side and Server-side Async41 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

JavaServer Faces 2.2 •  Queue control for Ajax requests •  File Upload component (Non-Ajax & Ajax) •  Injection in all JSF artifacts – including converters & validators •  @FaceletsResourceResolver! •  Instantiating composite components in Java •  . . .42 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Contexts & Dependency Injection 1.1 •  Embedded mode to startup outside Java EE container •  Global ordering of interceptors and decorators •  API for managing built-in contexts •  Send Servlet events as CDI events •  . . .43 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Enterprise JavaBeans 3.2 •  Three-part specification –  Core CMT transactions on Managed Beans, Non-persistent timer and Async method to Lite –  Optional CMP, BMP, Entity Beans, EJB QL, JAX-RPC Web service endpoint –  Interceptors •  Alignment with JMS 2.044 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Bean Validation 1.1 •  Open: Spec, Reference Implementation, TCK •  Method-level validation @MethodValidated public class OrderService { •  Dependency Injection public OrderService(@NotNull CreditCardProcessor creditCardProcessor) { //... } public void placeOrder( @NotNull @Size(min=3, max=20) String customerCode, @NotNull @Valid Item item, @Min(1) int quanDty) { //... } } 45 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Java Message Service 2.0 •  Connection, Session and other objects are AutoCloseable •  Simplified API –  Less verbose –  Reduce the number of objects needed to send/receive message –  Allow resource injection –  Alternative, not replacement, for standard API –  Remove JMSException, where possible •  New methods – no need for redundant arguments46 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Transparency •  Oracle’s Java EE 7 JSRs are run in the open on java.net –  http://javaee-spec.java.net –  One project per spec – e.g., jpa-spec, jax-rs-spec, jms-spec… •  Publicly viewable Expert Group mail archive –  Users observer list gets copies of all Expert Group emails •  Publicly viewable download area •  Publicly viewable issue tracker •  Commitment to update to JCP 2.8 Process47 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Status and Schedule•  All JSRs up and running•  Early Drafts –  Java EE 7 Platform, JSF 2.2, JAX-RS 2.0, JPA 2.1, CDI 1.1, EJB 3.2, JMS 2.0, Bean Validation 1.1, Expression Language 3.0•  Final release target: Q2 2013 48 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

GlassFish RoadmapGlassFish v3 GlassFish Server 3.1 GlassFish Server 3.1.2•  Java EE 6 support •  Centralized administration •  Bug Fixes•  Single instance •  Clustering / HA •  Incremental features•  GlassFish Enterprise Mgr •  GlassFish Server Control 2009 2010 2011 2012 2013 GlassFish Server 3.0.1 GlassFish Server 3.1.1 GlassFish Server 4 •  Oracle branding •  Bug fixes •  Java EE 7 •  Oracle platform support •  Updated components •  Multitenancy •  Oracle interoperability •  Incremental features •  PaaS-enablement 49 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

Call to Action •  Java EE 7 Expert Group Project – http://javaee-spec.java.net •  Java EE 7 Reference Implementation – http://glassfish.org •  The Aquarium –  http://blogs.oracle.com/theaquarium50 Copyright © 2012, Oracle and/or its affiliates. All rights reserved.

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Java EE 7: Developing for the Cloud at Java Day, Istanbul, May 2012

by Arun Gupta

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