d Eclipse is rebooted, Subversive automatically displays the dialog that shows Subversive SVN Connectors compatible with the installed version of the plug-in. Alternatively, you can install Subversive SVN Connectors from online and archived update sites for connectors. Visit Polarion.com, to get information about the available update sites.
Group items tagged
1More
Java Application Development: Makes Sure You Get Dependable and Resourceful Software So... - 0 views
-
Java is amongst the striking programming languages which find its execution even in contemporary day world that is heavily subjective by the iOS and Android platforms
1More
norton com setup product key - 0 views
-
visit www.Norton-tech.support. If you want get rid of norton virus or other infected files and norton technical expert advice or support. we provide our norton expert technical team advice and help.
1More
shared by henry klingberg on 30 Jun 10
- 
Cached
How do I get hold of the HttpServletRequest? - Confluence Development - Atlassian Docum... - 0 views
confluence.atlassian.com/...viewpage.action
confluence HttpServletRequest ServletActionContext development request java web programming
shared by henry klingberg on 30 Jun 10
- Cached
-
There are a number of circumstances in which it will not be populated, either because a web request has come in through some other path, or because there was no web request in the first place
1More
A JSTL primer, Part 2: Getting down to the core - 0 views
151More
Getting Started with RequestFactory - Google Web Toolkit - Google Code - 0 views
-
Entity Proxies
-
-
proxy types
-
entity types
- ...147 more annotations...
-
methods that return service stubs
-
one RequestFactory interface for your application
-
employeeRequest();
-
@Service(Employee.class)
-
extends RequestContext
-
extends RequestFactory
-
service stub
-
RequestFactory service stubs
-
must extend RequestContext
-
The methods in a service stub do not return entities directly
-
return subclasses of com.google.gwt.requestfactory.shared.Request.
-
This allows the methods on the interface to be invoked asynchronously with
-
Request.fire()
-
fire( new Receiver()
-
onSuccess
-
callers pass an AsyncCallback that implements onSuccess()
-
takes a Receiver which must implement onSuccess()
-
Receiver is an abstract class having a default implementation of onFailure()
-
you can extend Receiver and override onFailure()
-
onViolation()
-
any constraint violations on the server
-
The Request type returned from each method
-
parameterized with the return type of the service method.
-
Methods that have no return value should return type Request<Void>
-
BigDecimal, BigInteger, Boolean, Byte, Enum, Character, Date, Double, Float, Integer, Long, Short, String, Void
-
subclass of EntityProxy
-
List<T> or Set<T>
-
primitive types are not supported
-
methods that operate on an entity itself
-
like persist() and remove()
-
return objects of type InstanceRequest rather than Reques
-
Server Implementations
-
methods defined in an
-
entity's service interface
-
implemented in the class named
-
@Service annotation
-
in these examples, is the entity class
-
service implementations do not directly implement the RequestContext interface
-
server-side implementations use the domain entity types
-
@Entity
-
EntityManager
-
createQuery
-
getResultList();
-
entityManager()
-
createEntityManager()
-
em.persist(this);
-
em.remove(attached
-
em.close();
-
defined in the service's
-
RequestContext interface
-
even though the implementation does not formally implement the interface in Java
-
name and argument list for each method
-
same on client and server
-
Client side methods
-
return Request<T>
-
only T on the server
-
EntityProxy types become the domain entity type on the server
-
Methods that return a Request object in the client interface are implemented as static methods on the entity
-
Methods that operate on a single instance of an entity, like persist() and remove(),
-
eturn an
-
InstanceRequest
-
in the client interface
-
Instance methods do not pass the instance directly, but rather via the
-
using()
-
instance methods must be implemented as non-static methods in the entity type
-
Four special methods are required on all entities
-
as they are used by the RequestFactory servlet:
-
constructor
-
findEntity
-
An entity's getId()
-
is typically auto-generated by the persistence engine (JDO, JPA, Objectify, etc.)
-
"find by ID" method has a special naming convention
-
find()
-
"find" plus the type's simple name
-
On the server
-
getVersion() method is used by RequestFactory to infer if an entity has changed
-
backing store (JDO, JPA, etc.) is responsible for updating the version each time the object is persisted,
-
RequestFactoryServlet sends an UPDATE
-
if an entity changes as
-
Second, the client maintains a version cache of recently seen entities
-
Whenever it sees an entity whose version has changed, it fires
-
UPDATE events on the event bus
-
so that listeners can update the view
-
GWT.create
-
and initialize it with your application's EventBus
-
GWT.create
-
requestFactory.initialize
-
create a new entity on the client
-
EmployeeRequest request
-
EmployeeProxy newEmployee
-
All client-side code should use the EmployeeProxy
-
not the Employee entity itself
-
unlike GWT-RPC, where the same concrete type is used on both client and server
-
RequestFactory
-
designed to be used with an ORM layer like JDO or JPA
-
on the server
-
to build data-oriented (CRUD) apps with an ORM-like interface
-
on the client
-
easy to implement a data access layer
-
structure your server-side code in a data-centric way
-
GWT-RPC, which is service-oriented
-
On the client side, RequestFactory keeps track of objects that have been modified and sends only changes
-
lightweight network payloads
-
solid foundation for automatic batching and caching of requests in the future
-
RequestFactoryServlet
-
RequestFactory uses its own servlet
-
own protocol
-
not designed for general purpose services like GWT-RPC
-
implements its
-
It is designed specifically for implementing a persistence layer on both client and server.
-
In persistence frameworks like JDO and JPA, entities are annotated with
-
client-side representation of an entity
-
known as a
-
DTO (Data Transfer Object)
-
hook used to indicate that an object can be managed by RequestFactory
-
RequestFactory
-
EntityProxy interface
-
automatically populates bean-style properties between entities on the server and the corresponding EntityProxy on the client,
-
send only changes ("deltas") to the server
-
extends EntityProxy
-
interface
-
@ProxyFor
-
reference the server-side entity being represented
-
It is not necessary to represent every property and method from the server-side entity in the EntityProxy
-
EntityProxyId returned by this method is used throughout RequestFactory-related classes
-
while getId() is shown in this example, most client code will want to refer to
-
EntityProxy.stableId() i
-
to represent any type
-
is not required to expose an ID and version
-
often used to represent embedded object types within entities
-
@Embedded
-
Address
-
Address type
-
POJO with no persistence annotations
-
Address is represented as a ValueProxy
-
extends ValueProxy
-
interface
-
extends EntityProxy
-
interface
-
AddressProxy
-
AddressProxy
-
ValueProxy can be used to pass any type to and from the server
-
RequestFactory
-
interface between your client and server code
-
RequestContext interface
-
The server-side service
-
must implement each method
Get Rid of Computer Freezing - 1 views
A Firm Believer in Computer Support - 1 views
Why I Like Remote PC Support - 1 views
They Fixed My Slow Computer - 1 views
1More
REST for Java developers, Part 4: The future is RESTful - JavaWorld - 0 views
-
Tyranny of the Common Form. The social costs of getting everyone to agree to the definition of these central models always outweigh the technical costs of implementing them.
17More
Java Developers Leery of IBM-Sun Merger - 0 views
-
Java must advance into the new world of the cloud and big developer productivity.
-
Java will become a legacy platform.
-
slow down innovation
- ...10 more annotations...
-
It would certainly bring us down to two major players on the Java side: IBM and Oracle.
-
-
IBM likes to create these 'boil the ocean' kinds of solutions
-
-
IBM could wind up having six different JVM [Java Virtual Machine] implementations
-
-
it's a good thing for Sun to get out of the doldrums
-
Every time IBM has bought a company that was in a leadership position, that company seems to have lost market share
-
-
JCP for behaving like a "Russian commissar.
-
Although many have lost faith in the JCP, this is one area where a new steward could really breathe new life into Java
-
the speediest when it comes to keeping their Java technologies up-to-date
-
hold back innovation in support of their own client needs
-
server market would become a bit tighter and that playing field would be altered as well
1More
shared by Javin Paul on 10 Apr 11
- No Cached
Java Classpath tutorial for beginners - 0 views
javarevisited.blogspot.com/...ow-classpath-work-in-java.html
linux setting java classpath in tutorial set windows and
shared by Javin Paul on 10 Apr 11
- No Cached
-
I discovered this link while searching how classpath works in java , this link is good not only explains how to setup classpath in windows and linux but also helps to understand classpath working mechanism in java.
2More
Core java interview questions | Java interview questions - 1 views
-
Know about interview questions in java. Here is list of java interview questions which covers all main topics in java and categorized in basic java interview questions. -
Are you Searching Core Java interview questions? Javatpoint is providing a list of Java interview questions for freshers & experienced. There are the list of 170 core java interview questions. We assure that you will get here the 90% frequently asked interview questions and answers.
17More
JavaBlogging » What is serialVersionUID? - 2 views
-
private static final long serialVersionUID = 1L
-
and it is still there even after the program finished. Let’s see if we can read that file once again, this time without creating it first.
-
Now, let’s see what happens, when we change the serialVersionUID value and try to deserialize once again our file. Change the line 2 in the class SerializeMe so that serialVersionUID contains now 2 instead of 1:
- ...13 more annotations...
-
serialVersionUID = 2L;
-
static final
-
Exception in thread "main" java.io.InvalidClassException:
-
As you can see, this time the deserialization didn’t go well. ObjectInputStream complained about the serialVersionUID being changed.
-
How does he know that it changed? If serialVersinUID is static, then it should not have been serialized in the first place, and there should be no information about the previous value 1 during the deserialization, right? Well, serialVersionUID is an exception to the rule that “static fields don’t get serialized”.
-
Moreover, if there is no serialVersionUID officially declared in the class to be serialized, compiler automatically adds it with a value generated based on the fields declared in the class.
-
The deserialization of that object does not necessarily have to occur exactly after serialization. It can occur after a few months or on a completely different JVM
-
there is a chance that the class declaration has changed between serialization and deserialization.
-
It checks if the data read from the input stream is compatible with the current definition of the class.
-
when the visibility of a field changes, the serialVersionUID changes too.
-
sometimes you just want for some reason to forbid deserialization of old serialized objects,
-
you might tend to write it once for every serializable class ( or have it generated by the IDE ) and forget about it. WRONG !!!
-
If you write it once and don’t take care to update it when necessary, you loose all the merits of serialVersionUID.
1More
Revamping the Security API in Java EE 8 - DZone Performance - 1 views
-
Security is getting more important every day. You might not be familiar with JAAS, JAAC, and JASPIC, but these standard Java EE APIs remained untouched until the Java EE Security API for Java EE 8. Check why the Java EE 8 Security API is so important.