Haj 4328-java ee 7 overview

InterConnect
2017
HAJ-4328:
Java EE 7 Overview
Kevin Sutter, STSM
Java EE Architect

1 3/21/17
Please note
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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 and growing…
DEPLOYING TO 18 COMPLIANT APPLICATION SERVERS
2

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/the_ghosts
_of_java_ee, 8 June 2015
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
4

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
5

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. CDI Managed Beans
10. More annotated POJOs
6

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!
7

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
8

Java API for WebSocket 1.0
. . .
@OnMessage
public void message(String message) {
for (Session peer : peers) {
peer.getRemote().sendObject(message);
}
}
}
Chat Server (contd.)
9

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
10

{
"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
11

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
12

Batch Applications 1.0
Concepts
Metadata for jobs
Manage
batch
process
Batch
process
Independent
sequential
phase of job
Chunk
13

<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
14

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
15

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
16

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
17

@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
18

@Inject
JMSContext context;
@Resource(lookup = "java:global/jms/demoQueue")
Queue demoQueue;
public void sendMessage(String payload) {
context.createProducer().send(demoQueue, payload);
}
Sending a Message
19

Java API for RESTful Web Services 2.0
• Client API
• Message Filters and Entity Interceptors
• Asynchronous Processing – Server and Client
• Common Configuration
20

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
21

Contexts and Dependency Injection 1.1/1.2
• 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
22

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
23

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
24

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
25

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
26

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
27

Servlet 3.1
AsyncContext context = request.startAsync();
ServletInputStream input = request.getInputStream();
input.setReadListener(
new MyReadListener(input, context));
Non-blocking I/O: doGet
28

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
29

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
30

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
31

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
32

WebSphere Application Server
Java EE 7 Roadmap

Liberty features – including Java EE 7
zOS
ND
Core
Base
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-1.2cloudant-1.0
zosConnect-1.2
zosLocalAdapters-1.0zosSecurity-1.0 zosTransaction-1.0 zosWlm-1.0
zosRequestLogging-1.0batchSMFLogging-1.0
New in
1Q17
New in
4Q16
New in
2Q16
New in
3Q16
webProfile-6.0
distributedMap-1.0
productInsights-1.0
openidConnectServer-1.0
openidConnectClient-1.0
osgiAppIntegration-1.0
spnego-1.0
collectiveMember-1.0
restConnector-2.0
sessionDatabase-1.0
ldapRegistry-3.0
webCache-1.0
javaMail-1.5
osgiConsole-1.0
json-1.0
timedOperations-1.0transportSecurity-1.0
oauth-2.0
serverStatus-1.0
wab-1.0
blueprint-1.0
webProfile-7.0
eventLogging-1.0
requestTiming-1.0
adminCenter-1.0concurrent-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
microProfile-1.0 openid-2.0
monitor-1.0

Liberty features – Java EE 6 Web Profile
zOS
ND
Core
Base
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
productInsights-1.0
spnego-1.0
restConnector-2.0
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
bells-1.0
samlWeb-2.0
httpWhiteboard-1.0
osgiBundle-1.0
bluemixUtility-1.0
scim-1.0
monitor-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
New in
1Q17
New in
4Q16
New in
2Q16
New in
3Q16

Liberty features – Java EE 7 Web Profile
zOS
ND
Core
Base
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
productInsights-1.0
spnego-1.0
restConnector-2.0
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
bells-1.0
samlWeb-2.0
httpWhiteboard-1.0
osgiBundle-1.0
bluemixUtility-1.0
scim-1.0
monitor-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
New in
1Q17
New in
4Q16
New in
2Q16
New in
3Q16

Liberty features – Java EE 6
zOS
ND
Core
Base
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
productInsights-1.0
spnego-1.0
restConnector-2.0
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
bells-1.0
samlWeb-2.0
httpWhiteboard-1.0
osgiBundle-1.0
bluemixUtility-1.0
scim-1.0
monitor-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
New in
1Q17
New in
4Q16
New in
2Q16
New in
3Q16

Liberty features – Java EE 7 Full Platform
zOS
ND
Core
Base
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
productInsights-1.0
spnego-1.0
restConnector-2.0
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
bells-1.0
samlWeb-2.0
httpWhiteboard-1.0
osgiBundle-1.0
bluemixUtility-1.0
scim-1.0
monitor-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
New in
1Q17
New in
4Q16
New in
2Q16
New in
3Q16

• 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
– V9.0 – Full Java EE 7 platform support
– Available since 2Q2016
– https://www-01.ibm.com/support/docview.wss?uid=swg27048323
– Bluemix:
https://console.ng.bluemix.net/docs/services/ApplicationServeronCloud/index.html
WebSphere Support for Java EE 7
39

Overview
Java EE 8 Introduction

• Java EE 8 Platform (JSR 366)
– Development cycling fast
– Most child specifications have early draft reviews available
– Target date is 3Q2017 for GA of platform specifications
Java EE 8 Introduction
41

• 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
• Servlet 4.0 (JSR 369)
– HTTP/2 support
• CDI 2.0 (JSR 365)
– CDI Core, CDI Java SE, CDI Java EE
• Bean Validation 2.0 (JSR 380)
– Container element validation via annotations on type arguments of generics
• JAX-RS 2.1 (JSR 370)
– Server sent events
• JSF 2.3 (JSR 372)
– Better integration with CDI and JSON via Ajax API
• JSON-P 1.1 (JSR 374)
– Complementary support for JSON-B 1.0
Java EE 8 – Major New Specifications
42

Java EE Samples
• WASDev GitHub site
– https://github.com/WASdev?utf8=%E2%9C%93&q=sample.javaee7&type=&language=
– 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
• PlantsByWebSphere
– https://github.com/WASdev/sample.plantsbywebsphere
• 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/
44 44

Sampling of Related Sessions…
• HAJ-4308: OpenJPA, EclipseLink, and the WebSphere Migration Toolkit
– Monday, Mar 20, 1:00pm-1:45pm, Mandalay Bay South, Level 2 – Reef B
• HAM-4393: MicroProfile, Java EE, and the Application Server
– Monday, Mar 20, 2:00-2:45pm, Mandalay Bay North, Level 0 – Islander F
• 1842: Technical Deep-Dive into IBM WebSphere Liberty
– Tuesday, Mar 21, 1:30-2:15pm, Mandalay Bay North, Level 0 – Islander G
– Tuesday, Mar 21, 4:45-5:30pm, Surf D
• 7014: Roundtable Discussion on Building Java Microservices with WebSphere Liberty
– Monday, Mar 20, 2:00-2:45pm, Tropics A
– Wednesday, Mar 22, 8:00-8:45am, Tropics A
• HAJ-4328: Java EE 7 Overview
– Wednesday, Mar 22, 8:00-8:45am, Mandalay Bay South, Level 2 – Reef B
• BAS-5676: Java EE 8 Introduction
– Wednesday, Mar 22, 2:00-2:45pm, Mandalay Bay North, Level 0 – South Pacific A
• BMC-4286: MicroProfile: A Programming Model for Microservices-Based Applications
– Wednesday, Mar 22, 4:15-5:00pm, Mandalay Bay North, Level 0 – South Pacific A
• HAJ-4344: Java SE 9 and the Application Server
– Thursday, Mar 23, 10:30-11:15am, Mandalay Bay South, Level 2 – Reef B
• 1835: Agile Development Using MicroProfile and IBM WebSphere Liberty (Lab)
– Thursday, Mar 23, 10:30-12:15pm, South Seas D
45 45

47 3/21/17
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48 3/21/17
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continued
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