InterConnect 2016 Java EE 7 Overview (PEJ-5296)

PEJ-5296
Java EE 7 Overview
Kevin Sutter, STSM
WebSphere Java EE Architect
Twitter: @kwsutter
LinkedIn: https://www.linkedin.com/in/kevinwsutter

Please Note:
2
•  IBM’s statements regarding its plans, directions, and intent are subject to change or withdrawal without notice at IBM’s sole
discretion.
•  Information regarding potential future products is intended to outline our general product direction and it should not be relied on in
making a purchasing decision.
•  The information mentioned regarding potential future products is not a commitment, promise, or legal obligation to deliver any
material, code or functionality. Information about potential future products may not be incorporated into any contract.
•  The development, release, and timing of any future features or functionality described for our products remains at our sole discretion.
•  Performance is based on measurements and projections using standard IBM benchmarks in a controlled environment. The actual
throughput or performance that any user will experience will vary depending upon many factors, including considerations such as the
amount of multiprogramming in the user’s job stream, the I/O configuration, the storage configuration, and the workload processed.
Therefore, no assurance can be given that an individual user will achieve results similar to those stated here.

Java: Broadest Industry Adoption
10,000,000
JAVA DEVELOPERS
DEPLOYING TO 18 COMPLIANT APPLICATION SERVERS
3

Java EE 7 Platform
Jun 12, 2013
4

The Year of Java EE 7
Note: Unsupported Platforms
Note: Unsupported platforms“WebLogic 12.2.1 with full support for Java EE 7 is
slated to be released in just months (the officially
sanctioned timeline states calendar year 2015
which means the end of this year at the very
latest)”
https://blogs.oracle.com/reza/entry/
IBM Marketing Announce
WAS V8.0 – First fully-supported Java EE 6 Server
WAS V8.5.5.6 – First fully-supported Java EE 7 Server
5

Java EE 7 Themes
§  Batch
§  Concurrency
§  Simplified JMS
§  More annotated POJOs
§  Less boilerplate code
§  Cohesive integrated
platform
DEVELOPER
PRODUCTIVITY
§  WebSockets
§  JSON
§  Servlet 3.1 NIO
§  REST
MEETING
ENTERPRISE
DEMANDS
Java EE 7
6

Top Ten Features in Java EE 7
1.  WebSocket client/server endpoints
2.  Batch Applications
3.  JSON Processing
4.  Concurrency Utilities
5.  Simplified JMS API
6.  @Transactional and @TransactionScoped
7.  JAX-RS Client API
8.  Default Resources
9.  More annotated POJOs
10.  Faces Flow
7

Java API for WebSocket 1.0/1.1
•  Server and Client WebSocket Endpoint
–  Annotated: @ServerEndpoint, @ClientEndpoint
–  Programmatic: Endpoint
•  Lifecycle events support
•  Standard Packaging and Deployment
@ServerEndpoint("/chat") 
public class ChatServer { 
@OnMessage 
public void chat(String m) {
. . . 
}
}
Available Liberty v8.5.5.6 and WAS v9 Beta!
8

Java API for WebSocket 1.0
@ServerEndpoint("/chat")
public class ChatBean {
static Set<Session> peers = Collections.synchronizedSet(...); 
 
@OnOpen 
public void onOpen(Session peer) { 
peers.add(peer); 
} 
 
@OnClose 
public void onClose(Session peer) { 
peers.remove(peer); 
} 
 
. . .
Chat Server
9

Java API for WebSocket 1.0
. . . 
 
@OnMessage
public void message(String message) {
for (Session peer : peers) { 
peer.getRemote().sendObject(message); 
} 
} 
}
Chat Server (contd.)
10

JSON Processing 1.0
•  API to parse and generate JSON
•  Streaming API
–  Low-level, efficient way to parse/generate JSON
–  Similar to StAX API in XML world
•  Object Model API
–  Simple, easy to use high-level API
–  Similar to DOM API in XML world
11

{
"firstName": "John", "lastName": "Smith", "age": 25,  
"phoneNumber": [ 
{ "type": "home", "number": "212 555-1234" }, 
{ "type": "fax", "number": "646 555-4567" } 
] 
}
 
JsonParser p = Json.createParser(...); 
JsonParser.Event event = p.next(); // START_OBJECT
event = p.next(); // KEY_NAME
event = p.next(); // VALUE_STRING
String name = p.getString(); // "John”
Java API for JSON Processing 1.0
Streaming API
12

Batch Applications for Java Platform 1.0
•  Suited for non-interactive, bulk-oriented, and long-running tasks
•  Batch execution: sequential, parallel, decision-based
•  Processing Styles
–  Item-oriented: Chunked (primary)
–  Task-oriented: Batchlet
13

Batch Applications 1.0
Concepts
Metadata for jobs
Manage
batch
process
Batch
process
Independent
sequential
phase of job
Chunk
14

<step id="sendStatements">
<chunk item-count="3"> 
<reader ref="accountReader"/>
<processor ref="accountProcessor"/> 
<writer ref="emailWriter"/>
</step>
...implements ItemReader { 
public Object readItem() { 
// read account using JPA
}
...implements ItemProcessor {
Public Object processItems(Object account) { 
// read Account, return Statement
}
...implements ItemWriter {
public void writeItems(List statements) { 
// use JavaMail to send email
}
Batch Applications 1.0
Chunked Job Specification
15

Concurrency Utilities for Java EE 1.0
•  Extension of Java SE Concurrency Utilities API
•  Provide asynchronous capabilities to Java EE application components
•  Provides 4 types of managed objects
–  ManagedExecutorService
–  ManagedScheduledExecutorService
–  ManagedThreadFactory
–  ContextService
•  Context Propagation
16

Concurrency Utilities for Java EE 1.0
public class TestServlet extends HttpPServlet { 
@Resource(name="java:comp/DefaultManagedExecutorService") 
ManagedExecutorService executor; 
 
Future future = executor.submit(new MyTask()); 
 
class MyTask implements Runnable { 
public void run() {  
. . . // task logic 
} 
} 
} 
Submit Tasks to ManagedExecutorService using JNDI
17

Java Message Service 2.0
•  New JMSContext interface
•  AutoCloseable JMSContext, Connection, Session, …
•  Use of runtime exceptions
•  Method chaining on JMSProducer
•  Simplified message sending
Get More from Less
Java EE 7
18

@Resource(lookup = "myConnectionFactory") 
ConnectionFactory connectionFactory;
@Resource(lookup = "myQueue") 
Queue myQueue;
public void sendMessage (String payload) { 
Connection connection = null; 
try { 
connection = connectionFactory.createConnection(); 
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); 
MessageProducer messageProducer = session.createProducer(myQueue); 
TextMessage textMessage = session.createTextMessage(payload); 
messageProducer.send(textMessage); 
} catch (JMSException ex) { 
//. . . 
} finally { 
if (connection != null) { 
try { 
connection.close(); 
} catch (JMSException ex) {
//. . . 
} 
} 
} 
}
Application Server
Specific Resources
Boilerplate Code
Exception Handling
Sending a Message using JMS 1.1
19

@Inject 
JMSContext context;
@Resource(lookup = "java:global/jms/demoQueue") 
Queue demoQueue;
public void sendMessage(String payload) { 
context.createProducer().send(demoQueue, payload); 
}
Sending a Message
20

Java API for RESTful Web Services 2.0
•  Client API
•  Message Filters and Entity Interceptors
•  Asynchronous Processing – Server and Client
•  Common Configuration
21

Java API for RESTful Web Services 2.0
// Get instance of Client
Client client = ClientBuilder.newClient(); 
 
// Get customer name for the shipped products
String name = client.target("../orders/{orderId}/
customer") 
.resolveTemplate("orderId", "10") 
.queryParam("shipped", "true") 
.request() 
.get(String.class);
Client API
22

Contexts and Dependency Injection 1.1
•  Automatic enablement for beans with scope annotation and EJBs
– “beans.xml” is optional
•  Bean discovery mode
– all: All types
– annotated: Types with bean defining annotation (default)
– none: Disable CDI
•  @Vetoed for programmatic disablement of classes
•  Global ordering/priority of interceptors and decorators
23

Bean Validation 1.1
•  Alignment with Dependency Injection
•  Method-level validation
– Constraints on parameters and return values
– Check pre-/post-conditions
•  Integration with JAX-RS
Java EE 7
24

Built-in
Custom
@Future 
public Date getAppointment() { 
//. . . 
}
public void placeOrder(  
@NotNull String productName, 
@NotNull @Max("10") Integer quantity, 
@Customer String customer) {  
//. . . 
}
Bean Validation 1.1
Method Parameter and Result Validation
25

Java Persistence API 2.1
•  Schema Generation
– javax.persistence.schema-generation.* properties
•  Unsynchronized Persistence Contexts
•  Bulk update/delete using Criteria
•  User-defined functions using FUNCTION
•  Stored Procedure Query
•  Entity Graphs
26

Servlet 3.1
•  Non-blocking I/O
•  Protocol Upgrade
– HttpUpgradeHandler – necessary for Web Sockets
•  Security Enhancements
– <deny-uncovered-http-methods>: Deny request to HTTP methods
not explicitly covered by specified constaints
27

Servlet 3.1
public class TestServlet extends HttpServlet 
protected void doGet(HttpServletRequest request, 
HttpServletResponse response)  
throws IOException, ServletException { 
ServletInputStream input = request.getInputStream(); 
byte[] b = new byte[1024]; 
int len = -1; 
while ((len = input.read(b)) != -1) { 
. . . 
} 
} 
}
Non-blocking I/O Traditional
28

Servlet 3.1
AsyncContext context = request.startAsync(); 
ServletInputStream input = request.getInputStream(); 
input.setReadListener( 
new MyReadListener(input, context));
Non-blocking I/O: doGet
29

Servlet 3.1
@Override 
public void onDataAvailable() { 
try { 
StringBuilder sb = new StringBuilder(); 
int len = -1; 
byte b[] = new byte[1024]; 
while (input.isReady() && (len = input.read(b)) != -1) { 
String data = new String(b, 0, len); 
System.out.println("--> " + data); 
} 
} catch (IOException ex) { 
. . . 
} 
} 
. . . 
Non-blocking read
30

JavaServer Faces 2.2
•  Faces Flow
•  Resource Library Contracts
•  HTML5 Friendly Markup Support
– Pass through attributes and elements
•  Cross Site Request Forgery Protection
•  Loading Facelets via ResourceHandler
•  h:inputFile: New File Upload Component
31

Java Transaction API 1.2
§ @Transactional: Define transaction boundaries on CDI managed
beans
•  @TransactionScoped: CDI scope for bean instances scoped to the
active JTA transaction
Java EE 7
32

EJB 3.2
Servlet 3.1
CDI
Extensions
BeanValidation1.1
Batch 1.0
Web
Fragments
Java EE 7 JSRs
JCA 1.7JMS 2.0JPA 2.1
Managed Beans 1.0
Concurrency 1.0
Common
Annotations 1.1
Interceptors
1.2, JTA 1.2
CDI 1.1
JSF 2.2,
JSP 2.3,
EL 3.0
JAX-RS 2.0,
JAX-WS 2.2
JSON 1.0
WebSocket
1.0
33

WebSphere Application Server
Java EE 7 Roadmap

Liberty features – including Java EE 7
zOS
ND
Core
Base
New in
1Q16
New in
4Q15
New in
2Q15
New in
3Q15
zosConnect-1.2
zosLocalAdapters-1.0zosSecurity-1.0 zosTransaction-1.0 zosWlm-1.0
scalingController-1.0
scalingMember-1.0
dynamicRouting-1.0
collectiveController-1.0 clusterMember-1.0
healthManager-1.0healthAnalyzer-1.0
Java EE 6
subset
couchdb-1.0
mongodb-2.0
wsSecurity-1.1
javaee-7.0
batchManagement-1.0
rtcomm-1.0 rtcommGateway-1.0
sipServlet-1.0 wsSecuritySaml-1.1 mediaServerControl-1.0
wsAtomicTransaction-1.2
webProfile-6.0
distributedMap-1.0
openid-2.0
openidConnectServer-1.0
openidConnectClient-1.0
osgiAppIntegration-1.0
spnego-1.0
collectiveMember-1.0
restConnector-1.0
sessionDatabase-1.0
ldapRegistry-3.0
webCache-1.0
javaMail-1.5
osgiConsole-1.0
json-1.0
timedOperations-1.0monitor-1.0
oauth-2.0
serverStatus-1.0
wab-1.0
blueprint-1.0
webProfile-7.0
eventLogging-1.0
requestTiming-1.0
adminCenter-1.0
concurrent-1.0
bells-1.0
samlWeb-2.0
httpWhiteboard-1.0
federatedRepository-1.0
constrainedDelegation-1.0
osgiBundle-1.0
passwordUtilities-1.0
bluemixUtility-1.0
apiDiscovery-1.0logstashCollector-1.0
scim-1.0
35

Liberty features – Java EE 6 Web Profile
zOS
ND
Core
Base
New in
1Q16
New in
4Q15
New in
2Q15
New in
3Q15
zosConnect-1.2
scalingMember-1.0
dynamicRouting-1.0
Java EE 6
subset
couchdb-1.0
mongodb-2.0
wsSecurity-1.1
javaee-7.0
batchManagement-1.0
webProfile-6.0
distributedMap-1.0
openid-2.0
spnego-1.0
restConnector-1.0
sessionDatabase-1.0
ldapRegistry-3.0
webCache-1.0
javaMail-1.5
osgiConsole-1.0
json-1.0
oauth-2.0
serverStatus-1.0
wab-1.0
blueprint-1.0
webProfile-7.0
eventLogging-1.0
requestTiming-1.0
adminCenter-1.0
concurrent-1.0
bells-1.0
samlWeb-2.0
httpWhiteboard-1.0
osgiBundle-1.0
bluemixUtility-1.0
scim-1.0
servlet-3.0
jsp-2.0
jsf-2.0
ejbLite-3.1 jdbc-4.0
jndi-1.0
appSecurity-2.0
managedBeans-1.0
ssl-1.0
beanValidation-1.0
cdi-1.0
jpa-2.0
36

Liberty features – Java EE 7 Web Profile
zOS
ND
Core
Base
New in
1Q16
New in
4Q15
New in
2Q15
New in
3Q15
zosConnect-1.2
scalingMember-1.0
dynamicRouting-1.0
Java EE 6
subset
couchdb-1.0
mongodb-2.0
wsSecurity-1.1
javaee-7.0
batchManagement-1.0
webProfile-6.0
distributedMap-1.0
openid-2.0
spnego-1.0
restConnector-1.0
sessionDatabase-1.0
ldapRegistry-3.0
webCache-1.0
javaMail-1.5
osgiConsole-1.0
json-1.0
oauth-2.0
serverStatus-1.0
wab-1.0
blueprint-1.0
webProfile-7.0
eventLogging-1.0
requestTiming-1.0
adminCenter-1.0
concurrent-1.0
bells-1.0
samlWeb-2.0
httpWhiteboard-1.0
osgiBundle-1.0
bluemixUtility-1.0
scim-1.0
servlet-3.1
jsp-2.3
jsf-2.2
ejbLite-3.2 jdbc-4.1
jndi-1.0
appSecurity-2.0
managedBeans-1.0
ssl-1.0
beanValidation-1.1
cdi-1.2
jpa-2.1
el-3.0websocket-1.1
websocket-1.0
jsonp-1.0
jaxrs-2.0 jaxrsClient-2.0
37

Liberty features – Java EE 6
zOS
ND
Core
Base
New in
1Q16
New in
4Q15
New in
2Q15
New in
3Q15
zosConnect-1.2
scalingMember-1.0
dynamicRouting-1.0
Java EE 6
subset
couchdb-1.0
mongodb-2.0
wsSecurity-1.1
javaee-7.0
batchManagement-1.0
webProfile-6.0
distributedMap-1.0
openid-2.0
spnego-1.0
restConnector-1.0
sessionDatabase-1.0
ldapRegistry-3.0
webCache-1.0
javaMail-1.5
osgiConsole-1.0
json-1.0
oauth-2.0
serverStatus-1.0
wab-1.0
blueprint-1.0
webProfile-7.0
eventLogging-1.0
requestTiming-1.0
adminCenter-1.0
concurrent-1.0
bells-1.0
samlWeb-2.0
httpWhiteboard-1.0
osgiBundle-1.0
bluemixUtility-1.0
servlet-3.0
jsp-2.2
jsf-2.0
jdbc-4.0
jndi-1.0
appSecurity-2.0
managedBeans-1.0
ssl-1.0
beanValidation-1.0
cdi-1.0
jpa-2.0
jaxrs-1.1
jca-1.6
jms-1.1
jaxws-2.2
jaxb-2.2
wmqJmsClient-1.1
wasJmsClient-1.1
mdb-3.1
38

Liberty features – Java EE 7 Full Platform
zOS
ND
Core
Base
New in
1Q16
New in
4Q15
New in
2Q15
New in
3Q15
zosConnect-1.2
scalingMember-1.0
dynamicRouting-1.0
Java EE 6
subset
couchdb-1.0
mongodb-2.0
wsSecurity-1.1
javaee-7.0
batchManagement-1.0
webProfile-6.0
distributedMap-1.0
openid-2.0
spnego-1.0
restConnector-1.0
sessionDatabase-1.0
ldapRegistry-3.0
webCache-1.0
javaMail-1.5
osgiConsole-1.0
json-1.0
oauth-2.0
serverStatus-1.0
wab-1.0
blueprint-1.0
webProfile-7.0
eventLogging-1.0
requestTiming-1.0
adminCenter-1.0
concurrent-1.0
bells-1.0
samlWeb-2.0
httpWhiteboard-1.0
osgiBundle-1.0
bluemixUtility-1.0
servlet-3.1
jsp-2.3
jsf-2.2
ejbLite-3.2
jdbc-4.1
jndi-1.0
appSecurity-2.0
managedBeans-1.0
ssl-1.0
beanValidation-1.1
cdi-1.2
jpa-2.1
el-3.0
websocket-1.1
websocket-1.0
jsonp-1.0
jaxrs-2.0 jaxrsClient-2.0
concurrent-1.0
appClientSupport-1.0
ejbPersistentTimer-1.0
ejbHome-3.2
ejbRemote-3.2
ejb-3.2
mdb-3.2
j2eeManagement-1.1
jacc-1.5
jaspic-1.1
jca-1.7
jms-2.0
wmqJmsClient-2.0
wasJmsClient-2.0
jaxws-2.2
jaxb-2.2
batch-1.0 javaMail-1.5
39

•  WebSphere Application Server Liberty
– v8.5.5.6 – Full Java EE 7 platform support
– Available since 2Q2015
–  https://developer.ibm.com/wasdev/downloads/#asset/runtimes-8.5.5-wlp-javaee7
•  WebSphere Application Server traditional
– vNext – Full Java EE 7 platform support
– Cloud v9 Beta:
https://console.ng.bluemix.net/catalog/services/websphere-application-server/
– On-Premise v9 Beta:
https://www-01.ibm.com/marketing/iwm/iwmdocs/web/cc/earlyprograms/websphere/
wasob/index.shtml
WebSphere Support for Java EE 7
40

Overview
Java EE 8 Introduction

•  Java EE 8 Platform (JSR 366)
– Very early in development cycle
•  Content and schedule still likely to change
– Few child specifications have early draft reviews available
– Target date is 1H2017 for GA of platform specifications
Java EE 8 Introduction
42

•  JCache 1.0 (JSR 107)
–  Standard Cache API for Java objects
–  First spec to finalize (03/2015)
•  MVC 1.0 (JSR 371)
–  Model-View-Controller
–  Utilize existing Java EE technologies when applicable
•  Model (cdi, bv), View (jsp, facelets), Controller (jax-rs)
•  JSON-B 1.0 (JSR 367)
–  Binding complement to JSON-P in Java EE 7
•  Java EE Security 1.0 (JSR 375)
–  Modernization of security-related JSRs
•  Java EE Management 1.0 (JSR 373)
–  Supersede JSR 77 and utilize rest-based services (vs ejb)
–  Also, provide JSR 88-like deployment services
Java EE 8 – Major New Specifications
43

•  Servlet 4.0 (JSR 369)
–  HTTP 2 Support
–  Continued improvements to HTTP 1.1 support
•  CDI 2.0 (JSR 365)
–  Java SE model (not part of JDK)
–  More modular
•  JSF 2.3 (JSR 372)
–  Better integration with CDI and JSON via Ajax API
–  Integration with MVC 1.0
•  JSON-P 1.1 (JSR 374)
–  Complementary support for JSON-B 1.0
–  Java SE 8 support
•  JAX-RS 2.1 (JSR 370)
–  Server-Sent Events (SSE)
–  Integration with CDI, JSON-B, MVC, etc
Java EE 8 – Major Updated Specifications
44

Java EE Samples
•  WASDev GitHub site
–  https://github.com/WASdev?utf8=%E2%9C%93&query=sample.javaee7
–  Java EE 7 samples with instructions on deploying to both WebSphere Liberty and WebSphere traditional v9 Beta
–  The README.md file (as well as the GitHub page) have helpful configuration information
–  Following technologies are currently available with complete instructions for WebSphere
•  Web Sockets 1.0/1.1
•  Concurrency 1.0
•  JTA 1.2
•  JMS 2.0
•  Servlet 3.1
•  EL 3.0
•  JSON-P 1.0
•  JAX-RS 2.0
•  Java Batch 1.0
•  WASDev Posts to help you get started
–  https://developer.ibm.com/wasdev/docs/running-java-ee-7-samples-liberty-using-eclipse/
–  https://developer.ibm.com/wasdev/docs/running-the-java-ee-7-samples-on-was-liberty/
•  Official Java EE 7 GitHub site
–  https://github.com/javaee-samples/javaee7-samples
46 46

Sampling of Related Sessions…
•  PEJ-5296: Java EE 7 Overview
–  Monday, 10:30am-11:30am, Mandalay Bay North, South Pacific Ballroom A
•  PEJ-2876: Configuring WebSphere Application Server for Enterprise Messaging Needs
–  Monday, 12:00pm-1:00pm, Mandalay Bay North, Islander Ballroom G
•  PEJ-2139: Technical Deep Dive into IBM WebSphere Liberty
–  Monday, 3:00pm-4:00pm, Mandalay Bay North, South Pacific Ballroom A
•  PEJ-1603: IBM WebSphere Liberty in the Wild
–  Tuesday, 1:15pm-2:15pm, Mandalay Bay North, South Pacific Ballroom A
•  PEJ-6480: Don’t Wait! Developing Responsive Applications with Java EE 7
–  Tuesday, 1:15pm-2:15pm, Mandalay Bay North, Islander Ballroom G
•  PEJ-2151: Agile Development Using Java EE 7 with WebSphere Liberty Profile (LAB)
–  Wednesday, 8:30am-9:30am, MGM Grand Room 306
•  PEJ-1973: WAS Migration: Benefits, Planning, and Best Practices
–  Wednesday, 12:00pm-1:00pm, Mandalay Bay North, South Pacific Ballroom A
•  PEJ-1902: Migrate Java EE Applications to Cloud with Cloud Migration Toolkit
–  Wednesday, 2:30pm-12:15pm, Mandalay Bay North, Islander Ballroom G
•  PEJ-5303: OpenJPA and EclipseLink Usage Scenarios Explained
–  Thursday, 11:30am-12:15pm, Mandalay Bay North, South Pacific Ballroom A
47 47

Notices and Disclaimers
49
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Notices and Disclaimers Con’t.
50
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ability of any such third-party products to interoperate with IBM’s products. IBM EXPRESSLY DISCLAIMS ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING BUT
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