China Surpasses Germany in Auto Parts Export To The US - SREA Profits!

Score One Inc. (SREA)
$0.19

Keith Bradsher of the New York Times reported, "China's auto parts exports 
have increased more than six fold in the last five years" This increase 
has now enabled China to surpass Germany in auto parts export. 
Shipping over $1.9 billion in auto parts in the first quarter of 2007, 
which was an increase of 27% over last year. An additional $6.1 Billion 
was exported to the rest of the world.

Chinas total auto industry grossed $68 Billion worldwide in 2006 and 
is currently the fastest growing export.

SREA's new showcase facility, designed to rival Detroit's "Motor City" 
is certainly timely and represents a shift in power in the global auto market.

Read the news. The market watchers are already picking SREA across the board. 
Get on SREA first thing Thursday!




























































properties file in the TechTip-Facade  directory and set properties appropriately for your  environment.
The Dynamic Faces development team has already done the work of converting three of the jMaki widgets to work with Dynamic Faces.
SEVERE, "Database Error:",                             ee.
In addition to the execute and render options, you can use other options to further customize how Dynamic Faces handles the event.
See the documentation for the ajaxZone tag for a complete list of attributes.
In the case of the preceding example, you pass two parameters to the fireAjaxTransaction function.
To get a jMaki widget to work with Dynamic Faces, the widget developer makes some small modifications to a jMaki widget's component.
When the user clicks the button, the input field, representing the input component, and the output text, representing the text component, are rendered again.
It then stores the Facade as a field in the servlet so that it can be  used and shared by other client requests.
Compatibility will remain as important as before.
This project allows you to Ajax-enable any of the JavaServer Faces components that your web applications already use.
Also, the client code might need to interact with several  entities, where each entity has a different API and perhaps different requirements for transactions and entity manager  operations.
The application is the Java Persistence sample application  taken from the Java BluePrints Solutions Catalog .
These custom implementations defer to the standard implementations for non-Ajax requests.
The render portion, as its name suggests, renders the page as a result of a request for the page.
It also contains a script, db.
It's also a useful strategy if you want to keep the  Facade in the web container.
Therefore, the Dynamic Faces paradigm is familiar to both Ajax developers and JavaServer Faces developers.
You can't inject EntityManager instances into an application-scoped JavaServer Faces technology-based managed bean.
For example, set javaee.
The Facade does not expose calling clients to  persistence-related exceptions.
We are eager to work with the community to meet its needs and will be assessing the best ways to share information and enhance developer productivity.
This way, you get all the benefits of the JavaServer Faces component model, and you get the flexibility of using any widget wrapped as a JavaServer Faces component.
properties file in the TechTip-Facade  directory and set properties appropriately for your  environment.
This application uses plain and simple JavaServer Faces components as you've always known them, but they are now Ajax-enabled.
There is no difference between these methods.
Also, suppose that you want each component that generates an Ajax request to cause a different area of the component tree to be asynchronously updated.
Using the Dynamic Faces fireAjaxTransaction Method To execute more precise control over Ajax-related tasks, you can work with the built-in JavaScript technology library that Dynamic Faces provides.
If you want the Facade to use  annotations and dependency injection, the Facade must be a web  component.
Method binding expressions  bind UI components to action methods so that a method attached  to a component can execute when that component is activated.
fireAjaxTransaction function.
This application uses plain and simple JavaServer Faces components as you've always known them, but they are now Ajax-enabled.
You don't need to modify your components to give them the power of Ajax.
Then, the edited cell is re-rendered.
A standard Lifecycle object represents an instance of the JavaServer Faces life cycle, and a standard ViewRoot object represents the root of a component tree.
See the documentation for the ajaxZone tag for a complete list of attributes.
A Facade isn't limited to use with Java Persistence.
"We are creating a web site for open-source Java ME developers.
Note that the focus in this tip is on implementing a Facade for web-only  applications that are not using an EJB tier, that is, Java EE applications that do not use the EJB container or services.
It uses the EntityManagerFactory to create  EntityManager instances.
You can inject EntityManager instances into JSF managed beans to persist data.
For example, set javaee.
Method binding expressions  bind UI components to action methods so that a method attached  to a component can execute when that component is activated.
The ability to add an icon to the tab  C.
When the render portion of the life cycle is rendering a page that uses Dynamic Faces, it renders only selected components on the page as a result of an Ajax request.
Compatibility will remain as important as before.
We expect this to increase the speed of implementation, result in faster bug fixes, accelerate the adoption of a single platform, and drive implementation consistency up and fragmentation down.
If the user submits a valid number, the "response" page appears  indicating whether the guess is correct or not.
To tell the fireAjaxTransaction function how to produce the Ajax request, you pass a set of parameters to it.
We are creating a web site for open-source Java ME developers that will enable them to access documentation, source code, and tools to download, compile, and execute Java ME projects.
Project Dynamic Faces is another innovative project that provides a way to add Ajax functionality to a JavaServer Faces technology-based application.
Open sourcing Java ME should help reduce fragmentation and  benefit application developers and service providers.
This allows it to use annotations that are useful when  accessing Java Persistence entities and related services in  the Java EE platform.
However you can consider adding an  extra interface in more complex cases.
We want transparent and collaborative development that enables consistent platform behavior, drives functionality, and ensures the high quality that will accelerate platform growth.
So not only do OEMs and ODMs have an opportunity to benefit from the Java ME open-source code base, but so do third-party technology vendors.
You can  download the SDK from the Java EE Downloads page.
When this expression  is evaluated during rendering, the UserNumberBean.
It then stores the Facade as a field in the servlet so that it can be  used and shared by other client requests.
If the user clicks Cancel instead of the button, the cell is re-rendered with the original value.
In return, we ask that developers reciprocate by giving back to the Java community too.
Sun will continue to offer commercial implementations along with engineering services and support to fit customer needs.
Also, suppose that you want each component that generates an Ajax request to cause a different area of the component tree to be asynchronously updated.
In return, we ask that developers reciprocate by giving back to the Java community too.
getGuessList  method uses Java Persistence to load the collection from the  database:    .
Because of the collaborative nature of the component model, JavaScript technology events on some page components can cause asynchronous updates of any number of other components on the page.
To add this Ajax magic to your application, you must first identify the parts of the pages in your application that you want the Ajax functionality to update.
Having this code in one place in a Facade class is  better than repeating the code in your application whenever you need to access an entity.
You can also use the  injected UserTransaction instance to control the transactions:    .
getGuessList  method uses Java Persistence to load the collection from the  database:    .
The "before"  example shows the code for a servlet that accesses entities in  a model tier.
Why is this not a good approach to persisting data?
Note that the focus in this tip is on implementing a Facade for web-only  applications that are not using an EJB tier, that is, Java EE applications that do not use the EJB container or services.
You can leverage Project jMaki to wrap your favorite widget in a JavaServer Faces component.
See this reference page of JavaServer Faces technology extensions to use with Ajax for a list of all the optional arguments to the fireAjaxTransaction function.
It also contains a script, db.
But what if you want to add one of the cool Ajax-enabled widgets that you've seen to a JavaServer Faces technology-based application?
Let's take a look at some of the code for the guess number  application.
The details of these modifications are beyond the scope of this article, but you can read about them in this blog by Ed Burns, the co-lead of the JavaServer Faces technology specification.
What is a Model Facade?
However there are a number of things to consider when you use  Java Persistence.
As well as making it easy to add Ajax functionality to an application, Dynamic Faces gives you flexibility with regard to how you add the Ajax capabilities.
It handles all of the details of how relational data is mapped to Java objects, and it standardizes  object-relational mapping.
A JSF managed bean, UserNumberBean.
It also contains a script, db.
Here is the "before" code:    public class MyWebClient .
Sun TCKs will continue to be distributed as they are today.
In addition to the execute and render options, you can use other options to further customize how Dynamic Faces handles the event.
Finally, you must declare the Dynamic Faces tag library in each page that uses it.
We think this is fair.
The ajaxZone tag gives the page author a simple, familiar, and intuitive way to leverage the power of Dynamic Faces.
See the documentation for the ajaxZone tag for a complete list of attributes.
Now, you are ready to start using Dynamic Faces to add Ajax functionality to your application.
The "before"  example shows the code for a servlet that accesses entities in  a model tier.
To get a jMaki widget to work with Dynamic Faces, the widget developer makes some small modifications to a jMaki widget's component.
The following diagram shows the flow of the guess number  application: The application begins with the display of an HTML page that prompts for a number between a range.
Then, the edited cell is re-rendered.
The Facade does not expose calling clients to  persistence-related exceptions.
We are creating a community for open and collaborative development of Java ME applications and technologies.
The following diagram shows the flow of the guess number  application: The application begins with the display of an HTML page that prompts for a number between a range.
Use String's codePointCount method.
Pressing this  button navigates back to the initial page to allow more guesses.
The appropriate library functions update the HTML DOM tree with the newly rendered values.
Here is the "before" code:    public class MyWebClient .
Open sourcing Sun's implementations of Java ME will not  change the JCP.
A web component that uses  a Facade to access the model tier does not have to be aware of all the details of the APIs for each entity.
The application is the Java Persistence sample application  taken from the Java BluePrints Solutions Catalog .
Sun TCKs will continue to be distributed as they are today.
Project Dynamic Faces is another innovative project that provides a way to add Ajax functionality to a JavaServer Faces technology-based application.
fireAjaxTransaction function.
Open sourcing Sun's implementations of Java ME will not  change the JCP.
The response page also displays an "Again" button.
Here is the "before" code:    public class MyWebClient .
This project allows you to Ajax-enable any of the JavaServer Faces components that your web applications already use.
The server returns a special XML response that the Dynamic Faces JavaScript library processes.
The application is the Java Persistence sample application  taken from the Java BluePrints Solutions Catalog .
Also, suppose that you want each component that generates an Ajax request to cause a different area of the component tree to be asynchronously updated.
However you can consider adding an  extra interface in more complex cases.
"We are creating a web site for open-source Java ME developers.
For example, suppose you have a page with a set of buttons that a customer can use to select either a standard or deluxe package option when buying a car online.
Entities  can be used as POJOs.
Open sourcing Sun's implementations of Java ME will not  change the JCP.
The other parameters consist of options that direct Dynamic Faces on how to process the request.
The application is the Java Persistence sample application  taken from the Java BluePrints Solutions Catalog .
Also, the client code might need to interact with several  entities, where each entity has a different API and perhaps different requirements for transactions and entity manager  operations.
See this reference page of JavaServer Faces technology extensions to use with Ajax for a list of all the optional arguments to the fireAjaxTransaction function.
getGuessList  method uses Java Persistence to load the collection from the  database:    .
Therefore, the Dynamic Faces paradigm is familiar to both Ajax developers and JavaServer Faces developers.
Compliant JSR implementations will continue to be required to pass the TCKs.
A web component that uses  a Facade to access the model tier does not have to be aware of all the details of the APIs for each entity.
It's also a useful strategy if you want to keep the  Facade in the web container.
Why is this not a good approach to persisting data?
Tell us more about this community.
Why has Sun decided to open source the Java ME platform?
For example, a Java Persistence client such as a servlet, JSP page, or a JSF managed bean, might need to access  various types of APIs to access entities in the model.
You can leverage Project jMaki to wrap your favorite widget in a JavaServer Faces component.
Also, if you add a Facade between the calling clients and the entities in the model tier, it makes your code more loosely-coupled and easier to maintain.
This bean has other methods such as validate, but let's focus on the code that uses Java  Persistence.
Smaller runtime libraries  B.
See the documentation for the ajaxZone tag for a complete list of attributes.
Why is Sun open sourcing Java ME now, rather than earlier or  later?
With Dynamic Faces, you can identify which components in the tree should benefit from asynchronous updates.
For page authors, it's as easy as dropping the tag associated with the jMaki widget into the page, as the previous article in this series described.
For example, a Java Persistence client such as a servlet, JSP page, or a JSF managed bean, might need to access  various types of APIs to access entities in the model.
The wireless industry is moving faster than ever.
When you use zones, each Ajax transaction will cause all of the zones in the page to update.
This application uses plain and simple JavaServer Faces components as you've always known them, but they are now Ajax-enabled.
This bean has other methods such as validate, but let's focus on the code that uses Java  Persistence.
For example, set javaee.
The Facade returns the Java Persistence  entities in detached mode.
Write your congressman.
It handles all of the details of how relational data is mapped to Java objects, and it standardizes  object-relational mapping.
At the heart of Dynamic Faces are the custom Lifecycle and ViewRoot implementations.
The  guessNumber directory contains the web archive, web-app.
When the customer clicks one of the buttons, the values in a set of other components change without causing a full-page refresh.
Click on the links in the displayed page to retrieve or add  items in a catalog.
Enter the command: ant run This builds, deploys, and launches the sample application.
Dynamic Faces also leverages the JavaServer Faces component model to efficiently manage client-side and server-side state.
To see how to use the jMaki script.
However there are a number of things to consider when you use  Java Persistence.
getGuessList  method uses Java Persistence to load the collection from the  database:    .
Existing commercial licenses for Java ME source code will not  change.
For now, let's take the page author's view.
This application uses plain and simple JavaServer Faces components as you've always known them, but they are now Ajax-enabled.
Click on the links in the displayed page to retrieve or add  items in a catalog.
More importantly, Dynamic Faces leverages the JavaServer Faces component model to allow you to use Ajax capabilities in a more efficient way.
They give you the ability to add items to the Start menu or the equivalent.
Download the sample package for the tip and extract its contents.
Even better, your JavaServer Faces technology-based applications can benefit from the extra flexibility that jMaki widgets provide.
However you can consider adding an  extra interface in more complex cases.
The Facade handles all the transactional code and the entity  manager interactions.
Click on the links in the displayed page to retrieve or add  items in a catalog.
GenerationType;    import javax.
Try Developer Expert Assistance.
If you want to further  loosely-couple the code from the entities and model tier,  consider adding objects that are client-specific.
Why would a Java technology developer working on an  open-source project want to contribute to the Java ME platform?
This application uses plain and simple JavaServer Faces components as you've always known them, but they are now Ajax-enabled.
A package that contains the code for the sample application accompanies the tip.
The render portion, as its name suggests, renders the page as a result of a request for the page.
With Dynamic Faces, you can identify which components in the tree should benefit from asynchronous updates.
The other parameters consist of options that direct Dynamic Faces on how to process the request.
Then enter the Java EE SDK Contest  and get a chance to win an iPod Nano.
Ignore the time changes.
This bean has other methods such as validate, but let's focus on the code that uses Java  Persistence.
In the case of the preceding example, you pass two parameters to the fireAjaxTransaction function.
GenerationType;    import javax.
We are creating a community for open and collaborative development of Java ME applications and technologies.
properties file in the TechTip-Facade  directory and set properties appropriately for your  environment.
It includes the phases that handle data conversion, validation, and updating of the model object.
The other components on the page do not need to be re-rendered.
These custom implementations defer to the standard implementations for non-Ajax requests.
The ajaxZone tag gives the page author a simple, familiar, and intuitive way to leverage the power of Dynamic Faces.
us in-place editor widget in a single-page table.
When this expression  is evaluated during rendering, the UserNumberBean.
It also contains a script, db.
Write your congressman.
In this case, the options are execute and render.
As your application grows, you might need to repeat the same code for access to multiple entities.
Because of the collaborative nature of the component model, JavaScript technology events on some page components can cause asynchronous updates of any number of other components on the page.
See how well you do on this online quiz.
It also showed how to  create a JSF application that includes GUI components that are modeled by the JSF framework.
Therefore, the Dynamic Faces paradigm is familiar to both Ajax developers and JavaServer Faces developers.
The "before"  example shows the code for a servlet that accesses entities in  a model tier.
Test Your Knowledge of Java Technology Skip to Content Java Solaris Communities Sun Store Join SDN My Profile Why Join?
Sun will continue to offer commercial implementations along with engineering services and support to fit customer needs.
We expect this to increase the speed of implementation, result in faster bug fixes, accelerate the adoption of a single platform, and drive implementation consistency up and fragmentation down.
See this reference page of JavaServer Faces technology extensions to use with Ajax for a list of all the optional arguments to the fireAjaxTransaction function.
If you want to further  loosely-couple the code from the entities and model tier,  consider adding objects that are client-specific.
Why has Sun decided to open source the Java ME platform?
GeneratedValue;    import javax.
How can you make sure your applications handle the U.
The  Facade pattern defines a higher-level class that encapsulates and centralizes the interactions between Java Persistence  clients and the entities and operations of the Java Persistence API.
We need the  community's help to make sure that the Java ME platform evolves in the right direction and at the pace that the industry wants.
The ability to add and remove tabs How do you determine the number of characters in a String?
Method binding expressions  bind UI components to action methods so that a method attached  to a component can execute when that component is activated.
GeneratedValue;    import javax.
This bean has other methods such as validate, but let's focus on the code that uses Java  Persistence.
If the user clicks Cancel instead of the button, the cell is re-rendered with the original value.
The next section talks about another way to use Dynamic Faces when you want finer-grained control over how the components in your pages are Ajax-enabled.
Compatibility will remain as important as before.
Why is this not a good approach to persisting data?
Neither does the web  component need to be aware of the persistence mechanisms being used when accessing the entity managers or transaction managers.
The next section talks about another way to use Dynamic Faces when you want finer-grained control over how the components in your pages are Ajax-enabled.
This will enable their components or products to be more easily delivered to their customers through commercial implementations based on the open-source code base.
It also showed how to  create a JSF application that includes GUI components that are modeled by the JSF framework.
A Facade isn't limited to use with Java Persistence.
This allows this Facade to be cached and shared.
The input field is re-rendered to clear the value that the user had entered before clicking the button.
A user can navigate back and forth between the pages until he  makes a correct guess.
Using the Facade pattern can make the code in your Java Persistence clients cleaner.
Entities  can be used as POJOs.
Note that web components  should not hold EntityManager objects because doing so is not  thread safe.
The ability to add a tooltip to the tab  B.
The wireless industry is moving faster than ever.
With Dynamic Faces, you can identify which components in the tree should benefit from asynchronous updates.
Because of the collaborative nature of the component model, JavaScript technology events on some page components can cause asynchronous updates of any number of other components on the page.
The Facade is thread-safe and only stores objects that can be  safely cached.
Posting From The Client The initial page has a text field for entering a number and a button labeled "Guess" for submitting the guess.
Licensees will continue to receive the industry-leading value from Sun's commercial implementations as they do today.
The "after" example shows the servlet code if  a Facade is used.
The JCP maintains its critical role as the governing body for evolving Java technology standards.
The Facade returns the Java Persistence  entities in detached mode.
For example, a Java Persistence client such as a servlet, JSP page, or a JSF managed bean, might need to access  various types of APIs to access entities in the model.
The ability to add an icon to the tab  C.
First, developers will be able to download our Java technology code, build it, and run applications with it.
The approach is not thread safe.
This bean has other methods such as validate, but let's focus on the code that uses Java  Persistence.
Why is this not a good approach to persisting data?
Using the Facade Now let's look at how a web component such as a servlet uses the  example Facade.
Open sourcing Sun's implementations of Java ME will not  change the JCP.
As an alternative to manually configuring your application, you can use the Dynamic Faces download bundle, which includes blank applications for both JSP and Facelets view description technologies.
This tip examines a sample application that uses the Java  Persistence API with the JSF framework.
Using the Facade Now let's look at how a web component such as a servlet uses the  example Facade.
The wireless industry is moving faster than ever.
The "before"  example shows the code for a servlet that accesses entities in  a model tier.
fireAjaxTransaction function executes, causing Dynamic Faces to initiate an Ajax request to the server.
They give you the ability to add items to the Start menu or the equivalent.
It is a "copyleft" license, which means that if someone makes modifications to the source code and distributes the modified code, they must make the source for all of their modifications available.
Using the Dynamic Faces fireAjaxTransaction Method To execute more precise control over Ajax-related tasks, you can work with the built-in JavaScript technology library that Dynamic Faces provides.
Try Developer Expert Assistance.
For example, suppose you have a page with a set of buttons that a customer can use to select either a standard or deluxe package option when buying a car online.
You can see these jMaki widgets in action in Dynamic Faces applications in the Project Dynamic Faces and jMaki page.
" He is a regular speaker on enterprise application design.
They will continue to have access to the Sun licensee web site, knowledge bases, and engineering support for source code and TCKs.
These classes give you the ability to add graphics, pop-up menus, and floating tip functionality to the system tray.
For example, set javaee.
Using the Dynamic Faces fireAjaxTransaction Method To execute more precise control over Ajax-related tasks, you can work with the built-in JavaScript technology library that Dynamic Faces provides.
It includes the phases that handle data conversion, validation, and updating of the model object.
The GPL License What can you tell us about licensing?
Having this code in one place in a Facade class is  better than repeating the code in your application whenever you need to access an entity.
What is a Model Facade?
In most simple cases, the ajaxZone tag gives page authors what they need.
Value binding expressions bind  UI components to model tier data, so that data can be pushed to  the model when a form submit occurs.
By using the DynaFaces.
war,  for the application, and the subdirectories src and web for  viewing source.
And they will retain their full rights to use the Java ME source code, along with access to the TCKs and fully tested and productized solutions per their license agreements.
Then, the edited cell is re-rendered.
The Facade returns Java Persistence objects to be used as  POJOs by the client code.
You can't inject EntityManager instances into an application-scoped JavaServer Faces technology-based managed bean.
"Sun's open sourcing of Java ME reflects our desire to enable developers to have greater influence on the evolution of the industry-leading technologies that Sun has created.
At the heart of Dynamic Faces are the custom Lifecycle and ViewRoot implementations.
An extra interface can make the code more  loosely-coupled from the entities and model tier, but it  requires an extra class.
In return, we ask that developers reciprocate by giving back to the Java community too.
When the render portion of the life cycle is rendering a page that uses Dynamic Faces, it renders only selected components on the page as a result of an Ajax request.
This strategy is useful if you want to have  a web-only architecture and you don't want to use an EJB container.
What kinds of things can a developer do with open-source Java ME right away?
By using the DynaFaces.
Sun TCKs will continue to be distributed as they are today.
However you can consider adding an  extra interface in more complex cases.
Why has Sun decided to open source the Java ME platform?
It's also a useful strategy if you want to keep the  Facade in the web container.
Posting From The Client The initial page has a text field for entering a number and a button labeled "Guess" for submitting the guess.
When the user enters something in the input field and clicks the button represented by the commandButton tag, the following happens: The DynaFaces.
The "before"  example shows the code for a servlet that accesses entities in  a model tier.
For page authors, it's as easy as dropping the tag associated with the jMaki widget into the page, as the previous article in this series described.
The  guessNumber directory contains the web archive, web-app.
This project allows you to Ajax-enable any of the JavaServer Faces components that your web applications already use.
An Example Facade for a Web-Only Application Let's take a look at the code for a Facade.
You don't need to modify your components to give them the power of Ajax.
Open sourcing Java ME now is the best way to ensure that the platform remains the most compelling platform in the industry for targeting and developing applications.
If the user submits a valid number, the "response" page appears  indicating whether the guess is correct or not.
We will continue to monetize the business and help reduce the implementation and maintenance costs for our licensees.
They give you the ability to add items to the Start menu or the equivalent.
Ed Burns is a senior staff engineer at Sun.
Additionally, the Java platform has added new capabilities, such as the ability to use scripting languages.
The example Facade catches  the exceptions from the Java Persistence and Java Transaction APIs and throws a runtime exception instead.
First, developers will be able to download our Java technology code, build it, and run applications with it.
The other components on the page do not need to be re-rendered.
Here is a snippet of the greeting.
Finally, you must declare the Dynamic Faces tag library in each page that uses it.
GeneratedValue;    import javax.
In most simple cases, the ajaxZone tag gives page authors what they need.
Having this code in one place in a Facade class is  better than repeating the code in your application whenever you need to access an entity.
Sun TCKs will continue to be distributed as they are today.
" He is a regular speaker on enterprise application design.
A JSF managed bean, UserNumberBean.
Open sourcing Sun's implementations of Java ME will not  change the JCP.
It does not cache any stateful objects.
Test Your Knowledge of Java Technology Skip to Content Java Solaris Communities Sun Store Join SDN My Profile Why Join?
The previous article in this series introduced Project jMaki, which allows you to take any widget and wrap it in a JavaServer Pages tag handler or JavaServer Faces component.
If the user submits a valid number, the "response" page appears  indicating whether the guess is correct or not.
We want transparent and collaborative development that enables consistent platform behavior, drives functionality, and ensures the high quality that will accelerate platform growth.
Entity;    import javax.
For  example, when a button is pressed it causes a form to be  submitted.
See the documentation for the ajaxZone tag for a complete list of attributes.
It then stores the Facade as a field in the servlet so that it can be  used and shared by other client requests.
us in-place editor widget in a single-page table.
If the user submits a valid number, the "response" page appears  indicating whether the guess is correct or not.
Note that the focus in this tip is on implementing a Facade for web-only  applications that are not using an EJB tier, that is, Java EE applications that do not use the EJB container or services.
Using the Facade pattern can make the code in your Java Persistence clients cleaner.
There are several dimensions.
Then, the edited cell is re-rendered.
This allows it to use annotations that are useful when  accessing Java Persistence entities and related services in  the Java EE platform.
Opportunities for the Platform What opportunities will this open up for the Java ME platform itself?
To tell the fireAjaxTransaction function how to produce the Ajax request, you pass a set of parameters to it.
This allows it to use annotations that are useful when  accessing Java Persistence entities and related services in  the Java EE platform.
As an alternative to manually configuring your application, you can use the Dynamic Faces download bundle, which includes blank applications for both JSP and Facelets view description technologies.
Additionally, the Java platform has added new capabilities, such as the ability to use scripting languages.
Open sourcing Sun's implementations of Java ME will not  change the JCP.
Ignore the time changes.
Finally, you must declare the Dynamic Faces tag library in each page that uses it.
The id is  the primary key that is automatically generated when a row of  data is added to the database.
The Facade does not expose calling clients to  persistence-related exceptions.
Most recently, Roger has been involved with  different rendering technologies for JavaServer Faces technology.
First, developers will be able to download our Java technology code, build it, and run applications with it.
us in-place editor widget in a single-page table.
Note that web components  should not hold EntityManager objects because doing so is not  thread safe.
The Facade is thread-safe and only stores objects that can be  safely cached.
First,  let's inject the instances:    .
With Dynamic Faces, you can identify which components in the tree should benefit from asynchronous updates.
In the case of the preceding example, you pass two parameters to the fireAjaxTransaction function.
private CatalogFacade cf; By using the Facade, the servlet is shielded from the details of  the entities and from any persistence operations required to  access the entities.
us in-place editor widget with Dynamic Faces, let's include the widget in a JavaServer Faces data table component so that you can edit the value of a cell in the table.
Return those  instead of the entity objects.
The input field is re-rendered to clear the value that the user had entered before clicking the button.
It includes the phases that handle data conversion, validation, and updating of the model object.
Use String's codePointCount method.
She writes about web application technologies that are part of the Java EE platform.
The Facade handles all the transactional code and the entity  manager interactions.
Here is a snippet of the greeting.
It then stores the Facade as a field in the servlet so that it can be  used and shared by other client requests.
In the case of the preceding example, you pass two parameters to the fireAjaxTransaction function.
When the user enters something in the input field and clicks the button represented by the commandButton tag, the following happens: The DynaFaces.
Compliant JSR implementations will continue to be required to pass the TCKs.
This is an opportunity for a developer to participate in the  creation and evolution of Sun's Java ME implementations, which will help to increase speed of innovation and decrease development time.
They give you the ability to add items to the Start menu or the equivalent.
We are creating a community for open and collaborative development of Java ME applications and technologies.
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They give you the ability to add items to the Start menu or the equivalent.
In fact, the fireAjaxTransaction function allows you to Ajax-enable any component in your page without requiring you to provide any JavaScript technology or other code.
Developers will be able to make code contributions such as bug fixes and proposed enhancements.
When the render portion of the life cycle is rendering a page that uses Dynamic Faces, it renders only selected components on the page as a result of an Ajax request.
Write your congressman.
They allow you to start default desktop applications, such as email and browsers.
In most simple cases, the ajaxZone tag gives page authors what they need.
Effects on Commercial Licensees How will commercial licenses be affected?
The "before"  example shows the code for a servlet that accesses entities in  a model tier.
The server returns a special XML response that the Dynamic Faces JavaScript library processes.
This bean has other methods such as validate, but let's focus on the code that uses Java  Persistence.
This might involve copying  similar data access logic into each servlet or managed bean that needs to access the entities.
The other parameters consist of options that direct Dynamic Faces on how to process the request.
A web component that uses  a Facade to access the model tier does not have to be aware of all the details of the APIs for each entity.
" He is a regular speaker on enterprise application design.
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The ability to substitute a Component as a tab's identifier  D.
"We want to provide complete transparency and feedback into Sun's development of Java ME implementations.
We want to accelerate the growth and adoption of the Java ME  platform by enabling developers to participate fully in its creation and evolution.
More importantly, Dynamic Faces leverages the JavaServer Faces component model to allow you to use Ajax capabilities in a more efficient way.
Neither do you need to rewrite any of your application to add Ajax magic to it.
Smaller runtime libraries  B.
The Facade returns the Java Persistence  entities in detached mode.
This bean has other methods such as validate, but let's focus on the code that uses Java  Persistence.
Use String's codePointCount method.
The ability to substitute a Component as a tab's identifier  D.
We are creating a web site for open-source Java ME developers that will enable them to access documentation, source code, and tools to download, compile, and execute Java ME projects.
The details of these modifications are beyond the scope of this article, but you can read about them in this blog by Ed Burns, the co-lead of the JavaServer Faces technology specification.
In addition, we plan to open source JavaTest software, the test harness that supports both of these frameworks.
They will become more competitive by delivering a differentiated product to the market sooner.
Now, you are ready to start using Dynamic Faces to add Ajax functionality to your application.
An Example Facade for a Web-Only Application Let's take a look at the code for a Facade.
A package that contains the code for the sample application accompanies the tip.
The ability to add an icon to the tab  C.
You can also use the  injected UserTransaction instance to control the transactions:    .
A JSF managed bean, UserNumberBean.
If you want the Facade to use  annotations and dependency injection, the Facade must be a web  component.
If you examine the source for the  application, you'll see that it uses a Model Facade as the  interface for operations on the persistent entities in the  catalog.
EntityManager instances are not thread safe, so you should not  inject them into JSF managed beans that have a scope of session  or application.
We are eager to work with the community to meet its needs and will be assessing the best ways to share information and enhance developer productivity.
After entering a number, the user presses the "Guess" button to submit the information.
When the render portion of the life cycle is rendering a page that uses Dynamic Faces, it renders only selected components on the page as a result of an Ajax request.
The id is  the primary key that is automatically generated when a row of  data is added to the database.
The previous article in this series introduced Project jMaki, which allows you to take any widget and wrap it in a JavaServer Pages tag handler or JavaServer Faces component.
A Facade isn't limited to use with Java Persistence.
We think this is fair.
Here is a snippet of the greeting.
The "after" example shows the servlet code if  a Facade is used.
This section does not describe how to implement the scrolling feature of the demo; it only describes how to use the jMaki script.
Ed Burns is a senior staff engineer at Sun.
With Dynamic Faces, you can identify which components in the tree should benefit from asynchronous updates.
For example, set javaee.
The  guessNumber directory contains the web archive, web-app.
The best part is that Dynamic Faces does all this behind the scenes, in a way that is completely consistent with the JavaServer Faces technology life cycle.
Write your congressman.
See how well you do on this online quiz.
EntityManager instances are not thread safe, so you should not  inject them into JSF managed beans that have a scope of session  or application.
Using Dynamic Faces With jMaki So far, you have seen how you can use Dynamic Faces to re-render existing JavaServer Faces components with Ajax.
Because of the collaborative nature of the component model, JavaScript technology events on some page components can cause asynchronous updates of any number of other components on the page.
Pressing this  button navigates back to the initial page to allow more guesses.
The approach is not thread safe.
Smaller runtime libraries  B.
SEVERE, "Database Error:",                             ee.
The Facade returns the Java Persistence  entities in detached mode.
A standard Lifecycle object represents an instance of the JavaServer Faces life cycle, and a standard ViewRoot object represents the root of a component tree.
properties file in the TechTip-Facade  directory and set properties appropriately for your  environment.
The  guessNumber directory contains the web archive, web-app.
It's also a useful strategy if you want to keep the  Facade in the web container.
They will become more competitive by delivering a differentiated product to the market sooner.
To accomplish these tasks, you use the fireAjaxTransaction function.
" He is a regular speaker on enterprise application design.
This allows this Facade to be cached and shared.
These classes give you the ability to add graphics, pop-up menus, and floating tip functionality to the system tray.
We think this is fair.
Pressing this  button navigates back to the initial page to allow more guesses.
These custom implementations defer to the standard implementations for non-Ajax requests.
This particular demo shows a multi-page, scrollable demo.
The previous article in this series introduced Project jMaki, which allows you to take any widget and wrap it in a JavaServer Pages tag handler or JavaServer Faces component.
If you want the Facade to use  annotations and dependency injection, the Facade must be a web  component.
The ajaxZone tag gives the page author a simple, familiar, and intuitive way to leverage the power of Dynamic Faces.
Using Dynamic Faces With jMaki So far, you have seen how you can use Dynamic Faces to re-render existing JavaServer Faces components with Ajax.
How can you make sure your applications handle the U.
This allows this Facade to be cached and shared.
See how well you do on this online quiz.
Using the Facade Now let's look at how a web component such as a servlet uses the  example Facade.
The render portion, as its name suggests, renders the page as a result of a request for the page.
You can download the sample archive for the Using Java  Persistence With JavaServer Faces Technology tip.
You don't need to modify your components to give them the power of Ajax.
The ability to add an icon to the tab  C.
As an alternative to manually configuring your application, you can use the Dynamic Faces download bundle, which includes blank applications for both JSP and Facelets view description technologies.
Posting From The Client The initial page has a text field for entering a number and a button labeled "Guess" for submitting the guess.
Ed Burns is a senior staff engineer at Sun.
The application is the Java Persistence sample application  taken from the Java BluePrints Solutions Catalog .
Write your congressman.
This last dependency is Shale Remoting, which Dynamic Faces uses to load JavaScript technology files and other resources from the Java classpath.
The following code injects EntityManager instances into an application-scoped JavaServer Faces technology-based managed bean.
Now, you are ready to start using Dynamic Faces to add Ajax functionality to your application.
Notice too that in the addItem method, JTA APIs for transaction  demarcation are needed to access the entities.
You can't inject EntityManager instances into an application-scoped JavaServer Faces technology-based managed bean.
fireAjaxTransaction function.
Having this code in one place in a Facade class is  better than repeating the code in your application whenever you need to access an entity.
He has been  involved with the Java BluePrints since its inception.
When you use zones, each Ajax transaction will cause all of the zones in the page to update.
Why would a Java technology developer working on an  open-source project want to contribute to the Java ME platform?
Designing and Coding a Facade To illustrate how much cleaner it is to code with a Facade,  let's look at a "before" and "after" example.
Method binding expressions  bind UI components to action methods so that a method attached  to a component can execute when that component is activated.
The next section talks about another way to use Dynamic Faces when you want finer-grained control over how the components in your pages are Ajax-enabled.
We want to accelerate the growth and adoption of the Java ME  platform by enabling developers to participate fully in its creation and evolution.
But what if you want to add one of the cool Ajax-enabled widgets that you've seen to a JavaServer Faces technology-based application?
You can download the sample archive for the Using a Model Facade tip.
private CatalogFacade cf; By using the Facade, the servlet is shielded from the details of  the entities and from any persistence operations required to  access the entities.
When this expression  is evaluated during rendering, the UserNumberBean.
getGuessList  method uses Java Persistence to load the collection from the  database:    .
getGuessList  method uses Java Persistence to load the collection from the  database:    .
Note that you do not have to write a single line of JavaScript technology code to implement this example, nor do you need any custom components.
As developers of JavaServer Faces technology-based applications know, a JavaServer Faces page is represented by a tree of components.
When you use zones, each Ajax transaction will cause all of the zones in the page to update.
Managed beans are JSF application beans that can be  instantiated on demand.
As an alternative to manually configuring your application, you can use the Dynamic Faces download bundle, which includes blank applications for both JSP and Facelets view description technologies.
See the documentation for the ajaxZone tag for a complete list of attributes.
Pass a set of parameters to the function.
Smaller runtime libraries  B.
The  facade only holds the EntityManagerFactory and the  UserTransaction objects, both of which are thread-safe and can  be held and cached for subsequent requests.
Also,   EntityManager APIs are needed to store the new Item in the  database.
Rate and Review Tell us what you think of the content of this page.
More importantly, Dynamic Faces leverages the JavaServer Faces component model to allow you to use Ajax capabilities in a more efficient way.
The important lesson to remember is that using the fireAjaxTransaction function gives you more control over what components in your page benefit from Ajax.
We want transparent and collaborative development that enables consistent platform behavior, drives functionality, and ensures the high quality that will accelerate platform growth.
To tell the fireAjaxTransaction function how to produce the Ajax request, you pass a set of parameters to it.
The  guessNumber directory contains the web archive, web-app.
At the heart of Dynamic Faces are the custom Lifecycle and ViewRoot implementations.
And they will retain their full rights to use the Java ME source code, along with access to the TCKs and fully tested and productized solutions per their license agreements.
We are creating a web site for open-source Java ME developers that will enable them to access documentation, source code, and tools to download, compile, and execute Java ME projects.
A JSF managed bean, UserNumberBean.
You can't inject EntityManager instances into an application-scoped JavaServer Faces technology-based managed bean.
You can use the injected EntityManagerFactory instance anywhere  to create and use an EntityManager.
Neither do you need to rewrite any of your application to add Ajax magic to it.
The JCP maintains its critical role as the governing body for evolving Java technology standards.
We think this is fair.
See this reference page of JavaServer Faces technology extensions to use with Ajax for a list of all the optional arguments to the fireAjaxTransaction function.
The Facade returns the Java Persistence  entities in detached mode.
It is a "copyleft" license, which means that if someone makes modifications to the source code and distributes the modified code, they must make the source for all of their modifications available.
Now, you are ready to start using Dynamic Faces to add Ajax functionality to your application.
us in-place editor widget, the Dojo fisheye widget, and the Dojo inline-editor widget.
The ajaxZone tag gives the page author a simple, familiar, and intuitive way to leverage the power of Dynamic Faces.
Using the Dynamic Faces fireAjaxTransaction Method To execute more precise control over Ajax-related tasks, you can work with the built-in JavaScript technology library that Dynamic Faces provides.
When the customer clicks one of the buttons, the values in a set of other components change without causing a full-page refresh.
Set the value of the attribute to the DynaFaces.
He has been  involved with the Java BluePrints since its inception.
You can  download the SDK from the Java EE Downloads page.
You can see these jMaki widgets in action in Dynamic Faces applications in the Project Dynamic Faces and jMaki page.
Then enter the Java EE SDK Contest  and get a chance to win an iPod Nano.
See how well you do on this online quiz.
The example Facade catches  the exceptions from the Java Persistence and Java Transaction APIs and throws a runtime exception instead.
The pattern provides a single interface for operations on  a set of entities.
Write your congressman.
After entering a number, the user presses the "Guess" button to submit the information.
It's also a useful strategy if you want to keep the  Facade in the web container.
Value binding expressions bind  UI components to model tier data, so that data can be pushed to  the model when a form submit occurs.
Updating Areas of Your Page Using the ajaxZoneTag One way to identify which components on the page to Ajax-enable is to wrap them with the ajaxZone custom tag that Dynamic Faces provides.
Additionally, the Java platform has added new capabilities, such as the ability to use scripting languages.
When you use zones, each Ajax transaction will cause all of the zones in the page to update.
We are creating a community for open and collaborative development of Java ME applications and technologies.
We are eager to work with the community to meet its needs and will be assessing the best ways to share information and enhance developer productivity.
Why would a Java technology developer working on an  open-source project want to contribute to the Java ME platform?
us in-place editor widget with Dynamic Faces, let's include the widget in a JavaServer Faces data table component so that you can edit the value of a cell in the table.
"We are creating a web site for open-source Java ME developers.
It's also a useful strategy if you want to keep the  Facade in the web container.
"Sun's open sourcing of Java ME reflects our desire to enable developers to have greater influence on the evolution of the industry-leading technologies that Sun has created.
This application uses plain and simple JavaServer Faces components as you've always known them, but they are now Ajax-enabled.
Using the Facade pattern can make the code in your Java Persistence clients cleaner.
Excellent   Good   Fair   Poor   Comments: If you would like a reply to your comment, please submit your email address: Note: We may not respond to all submitted comments.
Compatibility will remain as important as before.
If you are interested in contributing to this effort, see the Project jMaki community page.
Also,   EntityManager APIs are needed to store the new Item in the  database.
The next section talks about another way to use Dynamic Faces when you want finer-grained control over how the components in your pages are Ajax-enabled.
Designing and Coding a Facade To illustrate how much cleaner it is to code with a Facade,  let's look at a "before" and "after" example.
When you do this, you are telling Dynamic Faces to asynchronously update only that part of the component tree that you have identified with the ajaxZone tag.
fireAjaxTransaction function executes, causing Dynamic Faces to initiate an Ajax request to the server.
It handles all of the details of how relational data is mapped to Java objects, and it standardizes  object-relational mapping.
What is a Model Facade?
Excellent   Good   Fair   Poor   Comments: If you would like a reply to your comment, please submit your email address: Note: We may not respond to all submitted comments.
Also,   EntityManager APIs are needed to store the new Item in the  database.
More importantly, Dynamic Faces leverages the JavaServer Faces component model to allow you to use Ajax capabilities in a more efficient way.
This particular demo shows a multi-page, scrollable demo.
There is no difference between these methods.
It's also a useful strategy if you want to keep the  Facade in the web container.
This strategy is useful if you want to have  a web-only architecture and you don't want to use an EJB container.
A standard Lifecycle object represents an instance of the JavaServer Faces life cycle, and a standard ViewRoot object represents the root of a component tree.
getGuessList  method uses Java Persistence to load the collection from the  database:    .
The Facade does not expose calling clients to  persistence-related exceptions.
As well as making it easy to add Ajax functionality to an application, Dynamic Faces gives you flexibility with regard to how you add the Ajax capabilities.
EntityManager instances are not thread safe, so you should not  inject them into JSF managed beans that have a scope of session  or application.
Running the Sample Code A sample package accompanies this tip that includes a Model  Facade.
Why would a Java technology developer working on an  open-source project want to contribute to the Java ME platform?
Choose the best answer for each question, then click Submit to see how you scored.
It handles all of the details of how relational data is mapped to Java objects, and it standardizes  object-relational mapping.
Try Developer Expert Assistance.
Posting From The Client The initial page has a text field for entering a number and a button labeled "Guess" for submitting the guess.
"We are creating a web site for open-source Java ME developers.
The approach is not thread safe.
In addition, we plan to open source JavaTest software, the test harness that supports both of these frameworks.
A Model Facade is a good way to simplify the code in a Java Persistence client.
The pattern provides a single interface for operations on  a set of entities.
The approach does not persist data.
A package that contains the code for the sample application accompanies the tip.
Java Persistence entities are managed by  the entity manager and can be used as model objects.
The previous article in this series introduced Project jMaki, which allows you to take any widget and wrap it in a JavaServer Pages tag handler or JavaServer Faces component.
You can see these jMaki widgets in action in Dynamic Faces applications in the Project Dynamic Faces and jMaki page.
The ability to add an icon to the tab  C.
And they will retain their full rights to use the Java ME source code, along with access to the TCKs and fully tested and productized solutions per their license agreements.
We want to accelerate the growth and adoption of the Java ME  platform by enabling developers to participate fully in its creation and evolution.
The response page also displays an "Again" button.
As developers of JavaServer Faces technology-based applications know, a JavaServer Faces page is represented by a tree of components.
If you start with the blank application, all the setup work has been done for you, and you can just start writing pages.
See this reference page of JavaServer Faces technology extensions to use with Ajax for a list of all the optional arguments to the fireAjaxTransaction function.
This might involve copying  similar data access logic into each servlet or managed bean that needs to access the entities.
The following diagram shows the flow of the guess number  application: The application begins with the display of an HTML page that prompts for a number between a range.
If your application uses a web-only architecture and its web components access the entities, then  using a Facade can help clean up your code.
Using Dynamic Faces With jMaki So far, you have seen how you can use Dynamic Faces to re-render existing JavaServer Faces components with Ajax.
us in-place editor widget with Dynamic Faces, let's include the widget in a JavaServer Faces data table component so that you can edit the value of a cell in the table.
We want transparent and collaborative development that enables consistent platform behavior, drives functionality, and ensures the high quality that will accelerate platform growth.
What is a Model Facade?
A JSF managed bean, UserNumberBean.
Let's take a look at some of the code for the guess number  application.
us in-place editor widget, the Dojo fisheye widget, and the Dojo inline-editor widget.
Designing and Coding a Facade To illustrate how much cleaner it is to code with a Facade,  let's look at a "before" and "after" example.
These classes give you the ability to add graphics, pop-up menus, and floating tip functionality to the system tray.
The next section talks about another way to use Dynamic Faces when you want finer-grained control over how the components in your pages are Ajax-enabled.
The application is the Java Persistence sample application  taken from the Java BluePrints Solutions Catalog .
The converted jMaki-wrapped widgets are the script.
If the user clicks Cancel instead of the button, the cell is re-rendered with the original value.
We are eager to work with the community to meet its needs and will be assessing the best ways to share information and enhance developer productivity.
The Facade returns Java Persistence objects to be used as  POJOs by the client code.
Write your congressman.
private CatalogFacade cf; By using the Facade, the servlet is shielded from the details of  the entities and from any persistence operations required to  access the entities.
The other components on the page do not need to be re-rendered.
It also showed how to  create a JSF application that includes GUI components that are modeled by the JSF framework.
Envelope handlers  B.
The need to access these different types of APIs, as well as the multiplicity of transactions and entity manager  operations can lead to a lot of complexity in the client code.
We expect this to increase the speed of implementation, result in faster bug fixes, accelerate the adoption of a single platform, and drive implementation consistency up and fragmentation down.
For  example, when a button is pressed it causes a form to be  submitted.
The ajaxZone tag gives the page author a simple, familiar, and intuitive way to leverage the power of Dynamic Faces.
The details of these modifications are beyond the scope of this article, but you can read about them in this blog by Ed Burns, the co-lead of the JavaServer Faces technology specification.
However you can consider adding an  extra interface in more complex cases.
us in-place editor widget, the Dojo fisheye widget, and the Dojo inline-editor widget.
By using the DynaFaces.
Also, when the customer changes the values in one of the other components, the price displayed for the car also displays without a full-page refresh.
Set the value of the attribute to the DynaFaces.
Licensees will continue to receive the industry-leading value from Sun's commercial implementations as they do today.
"We are creating a web site for open-source Java ME developers.
It then stores the Facade as a field in the servlet so that it can be  used and shared by other client requests.
If your application uses a web-only architecture and its web components access the entities, then  using a Facade can help clean up your code.
This particular demo shows a multi-page, scrollable demo.
java, contains the processing logic for the application.
The Java Persistence API also includes an EntityManager API that  you can use to persist entities to a database.
The Facade returns the Java Persistence  entities in detached mode.
See the documentation for the ajaxZone tag for a complete list of attributes.
Managed beans are JSF application beans that can be  instantiated on demand.
In most simple cases, the ajaxZone tag gives page authors what they need.
As developers of JavaServer Faces technology-based applications know, a JavaServer Faces page is represented by a tree of components.
You can leverage Project jMaki to wrap your favorite widget in a JavaServer Faces component.
The approach cannot be used with container-managed persistence.
Why has Sun decided to open source the Java ME platform?
The Facade handles all the transactional code and the entity  manager interactions.
Sun will continue to offer commercial implementations along with engineering services and support to fit customer needs.
Most recently, Roger has been involved with  different rendering technologies for JavaServer Faces technology.
In addition to the execute and render options, you can use other options to further customize how Dynamic Faces handles the event.
We are creating a community for open and collaborative development of Java ME applications and technologies.
The ability to substitute a Component as a tab's identifier  D.
You can  download the SDK from the Java EE Downloads page.
They will continue to have access to the Sun licensee web site, knowledge bases, and engineering support for source code and TCKs.
This allows this Facade to be cached and shared.
Tell us more about this community.
It is a "copyleft" license, which means that if someone makes modifications to the source code and distributes the modified code, they must make the source for all of their modifications available.
A later tip showed how to create  custom components with JavaServer Faces technology.
More importantly, Dynamic Faces leverages the JavaServer Faces component model to allow you to use Ajax capabilities in a more efficient way.
Please specify a name for the item.
An extra interface can make the code more  loosely-coupled from the entities and model tier, but it  requires an extra class.
We want to accelerate the growth and adoption of the Java ME  platform by enabling developers to participate fully in its creation and evolution.
Use String's codePointCount method.
When the user clicks the button, the input field, representing the input component, and the output text, representing the text component, are rendered again.
How does Sun plan to make money on Java ME technologies once they are open sourced?
Designing and Coding a Facade To illustrate how much cleaner it is to code with a Facade,  let's look at a "before" and "after" example.
There are several dimensions.
The  facade only holds the EntityManagerFactory and the  UserTransaction objects, both of which are thread-safe and can  be held and cached for subsequent requests.
This project allows you to Ajax-enable any of the JavaServer Faces components that your web applications already use.
It does not return a data transfer  object or a value object that is a copy of the Java  Persistence entities.
Designing and Coding a Facade To illustrate how much cleaner it is to code with a Facade,  let's look at a "before" and "after" example.
Existing commercial licenses for Java ME source code will not  change.
The id is  the primary key that is automatically generated when a row of  data is added to the database.
fireAjaxTransaction function.
EntityManager instances are not thread safe, so you should not  inject them into JSF managed beans that have a scope of session  or application.
He has experience with Servlet and JSP technologies.
Designing and Coding a Facade To illustrate how much cleaner it is to code with a Facade,  let's look at a "before" and "after" example.
This last dependency is Shale Remoting, which Dynamic Faces uses to load JavaScript technology files and other resources from the Java classpath.
This is an opportunity for a developer to participate in the  creation and evolution of Sun's Java ME implementations, which will help to increase speed of innovation and decrease development time.
So not only do OEMs and ODMs have an opportunity to benefit from the Java ME open-source code base, but so do third-party technology vendors.
At the heart of Dynamic Faces are the custom Lifecycle and ViewRoot implementations.
The Facade returns the Java Persistence  entities in detached mode.
At the heart of Dynamic Faces are the custom Lifecycle and ViewRoot implementations.
An Example Facade for a Web-Only Application Let's take a look at the code for a Facade.
Licensees will continue to receive the industry-leading value from Sun's commercial implementations as they do today.
us About the Authors Jennifer Ball is a staff writer at Sun Microsystems.
The "before"  example shows the code for a servlet that accesses entities in  a model tier.
The wireless industry is moving faster than ever.
Using the Facade pattern can make the code in your Java Persistence clients cleaner.
You can leverage Project jMaki to wrap your favorite widget in a JavaServer Faces component.
First,  let's inject the instances:    .
We want transparent and collaborative development that enables consistent platform behavior, drives functionality, and ensures the high quality that will accelerate platform growth.
We are eager to work with the community to meet its needs and will be assessing the best ways to share information and enhance developer productivity.
Also,   EntityManager APIs are needed to store the new Item in the  database.
Try Developer Expert Assistance.
Dynamic Faces also leverages the JavaServer Faces component model to efficiently manage client-side and server-side state.
Ed Burns is a senior staff engineer at Sun.
sql, for  creating the database table.
This application uses plain and simple JavaServer Faces components as you've always known them, but they are now Ajax-enabled.
When the render portion of the life cycle is rendering a page that uses Dynamic Faces, it renders only selected components on the page as a result of an Ajax request.
war,  for the application, and the subdirectories src and web for  viewing source.
We are creating a web site for open-source Java ME developers that will enable them to access documentation, source code, and tools to download, compile, and execute Java ME projects.
A web component that uses  a Facade to access the model tier does not have to be aware of all the details of the APIs for each entity.
So not only do OEMs and ODMs have an opportunity to benefit from the Java ME open-source code base, but so do third-party technology vendors.
A package that contains the code for the sample application accompanies the tip.
Here is a snippet of the greeting.
They will continue to have access to the Sun licensee web site, knowledge bases, and engineering support for source code and TCKs.
Finally, you must declare the Dynamic Faces tag library in each page that uses it.
A JSF managed bean, UserNumberBean.
So not only do OEMs and ODMs have an opportunity to benefit from the Java ME open-source code base, but so do third-party technology vendors.
The other parameters consist of options that direct Dynamic Faces on how to process the request.
A web component that uses  a Facade to access the model tier does not have to be aware of all the details of the APIs for each entity.
Entity;    import javax.
This bean has other methods such as validate, but let's focus on the code that uses Java  Persistence.
Dynamic Faces also leverages the JavaServer Faces component model to efficiently manage client-side and server-side state.
Sun will continue to offer commercial implementations along with engineering services and support to fit customer needs.
The converted jMaki-wrapped widgets are the script.
These custom implementations defer to the standard implementations for non-Ajax requests.
If the user submits a valid number, the "response" page appears  indicating whether the guess is correct or not.
Opportunities for the Platform What opportunities will this open up for the Java ME platform itself?
Therefore, the Dynamic Faces paradigm is familiar to both Ajax developers and JavaServer Faces developers.
Pressing this  button navigates back to the initial page to allow more guesses.
It includes the phases that handle data conversion, validation, and updating of the model object.
The "before"  example shows the code for a servlet that accesses entities in  a model tier.
Running the Sample Code A sample package accompanies this tip that demonstrates the  techniques covered in the tip.
Existing commercial licenses for Java ME source code will not  change.
These custom implementations defer to the standard implementations for non-Ajax requests.
The Facade does not expose calling clients to  persistence-related exceptions.
The pattern provides a single interface for operations on  a set of entities.
See the documentation for the ajaxZone tag for a complete list of attributes.
Sun TCKs will continue to be distributed as they are today.
The ability to substitute a Component as a tab's identifier  D.
It will also enable faster innovation of the platform and give developers earlier access to the latest innovations.
The Facade handles all the transactional code and the entity  manager interactions.
A user can navigate back and forth between the pages until he  makes a correct guess.
Not only is this repetitive code  difficult to manage, but it tightly couples the code to the entity model.
us in-place editor widget with Dynamic Faces, let's include the widget in a JavaServer Faces data table component so that you can edit the value of a cell in the table.
Updating Areas of Your Page Using the ajaxZoneTag One way to identify which components on the page to Ajax-enable is to wrap them with the ajaxZone custom tag that Dynamic Faces provides.
The best part is that Dynamic Faces does all this behind the scenes, in a way that is completely consistent with the JavaServer Faces technology life cycle.
"We are creating a web site for open-source Java ME developers.
It handles all of the details of how relational data is mapped to Java objects, and it standardizes  object-relational mapping.
If your application uses a web-only architecture and its web components access the entities, then  using a Facade can help clean up your code.
Write your congressman.
See the previous article in this series for an overview of Project jMaki.
An extra interface can make the code more  loosely-coupled from the entities and model tier, but it  requires an extra class.
But what if you want to add one of the cool Ajax-enabled widgets that you've seen to a JavaServer Faces technology-based application?
Also, the client code might need to interact with several  entities, where each entity has a different API and perhaps different requirements for transactions and entity manager  operations.
The GPL License What can you tell us about licensing?
To tell the fireAjaxTransaction function how to produce the Ajax request, you pass a set of parameters to it.
In addition to the execute and render options, you can use other options to further customize how Dynamic Faces handles the event.
But what if you want to add one of the cool Ajax-enabled widgets that you've seen to a JavaServer Faces technology-based application?
"Sun's open sourcing of Java ME reflects our desire to enable developers to have greater influence on the evolution of the industry-leading technologies that Sun has created.
This allows this Facade to be cached and shared.
Open sourcing Java ME will accelerate the adoption of a single platform, driving more implementation consistency and reducing fragmentation.
Developers will be able to influence the direction of the Java ME platform and possibly make contributions that could end up in hundreds of millions of devices.
Here is  a better approach.
The Dynamic Faces and jMaki development teams are working to make sure that all jMaki widgets support Dynamic Faces.
Using the Facade pattern can make the code in your Java Persistence clients cleaner.
us in-place editor widget in a single-page table.
Ignore the time changes.
It does not cache any stateful objects.
Licensees will continue to receive the industry-leading value from Sun's commercial implementations as they do today.
us in-place editor widget with Dynamic Faces, let's include the widget in a JavaServer Faces data table component so that you can edit the value of a cell in the table.
There are several dimensions.
Additionally, the Java platform has added new capabilities, such as the ability to use scripting languages.
When you use zones, each Ajax transaction will cause all of the zones in the page to update.
Developers will be able to make code contributions such as bug fixes and proposed enhancements.
Value binding expressions bind  UI components to model tier data, so that data can be pushed to  the model when a form submit occurs.
This application uses plain and simple JavaServer Faces components as you've always known them, but they are now Ajax-enabled.
The response page also displays an "Again" button.
These two implementations are extensions of the standard Lifecycle and ViewRoot implementations that JavaServer Faces technology supplies.
Choose the best answer for each question, then click Submit to see how you scored.
A Facade isn't limited to use with Java Persistence.
The output text is re-rendered to display a message that includes the value the user entered into the input field before clicking the button.
The converted jMaki-wrapped widgets are the script.
A package that contains the code for the sample application accompanies the tip.
This section does not describe how to implement the scrolling feature of the demo; it only describes how to use the jMaki script.
The  facade only holds the EntityManagerFactory and the  UserTransaction objects, both of which are thread-safe and can  be held and cached for subsequent requests.
The previous article in this series introduced Project jMaki, which allows you to take any widget and wrap it in a JavaServer Pages tag handler or JavaServer Faces component.
The Dynamic Faces and jMaki development teams are working to make sure that all jMaki widgets support Dynamic Faces.
When this expression  is evaluated during rendering, the UserNumberBean.
This strategy is useful if you want to have  a web-only architecture and you don't want to use an EJB container.
Download the sample package for the tip and extract its contents.
The other parameters consist of options that direct Dynamic Faces on how to process the request.
Having this code in one place in a Facade class is  better than repeating the code in your application whenever you need to access an entity.
How does Sun plan to make money on Java ME technologies once they are open sourced?
When the user enters something in the input field and clicks the button represented by the commandButton tag, the following happens: The DynaFaces.
us About the Authors Jennifer Ball is a staff writer at Sun Microsystems.
By using the DynaFaces.
This particular demo shows a multi-page, scrollable demo.
Download the  sample package for the tip and extract its contents.
Open sourcing Java ME should help reduce fragmentation and  benefit application developers and service providers.
Even better, your JavaServer Faces technology-based applications can benefit from the extra flexibility that jMaki widgets provide.
You can leverage Project jMaki to wrap your favorite widget in a JavaServer Faces component.
Ed Burns is a senior staff engineer at Sun.
Even better, your JavaServer Faces technology-based applications can benefit from the extra flexibility that jMaki widgets provide.
When the user clicks the button, the input field, representing the input component, and the output text, representing the text component, are rendered again.
If the user clicks Cancel instead of the button, the cell is re-rendered with the original value.
Also, suppose that you want each component that generates an Ajax request to cause a different area of the component tree to be asynchronously updated.
Then, the edited cell is re-rendered.
You can inject EntityManager instances into JSF managed beans to persist data.
This allows this Facade to be cached and shared.
This section does not describe how to implement the scrolling feature of the demo; it only describes how to use the jMaki script.
You can leverage Project jMaki to wrap your favorite widget in a JavaServer Faces component.
Please specify a name for the item.
Licensees will continue to receive the industry-leading value from Sun's commercial implementations as they do today.
A Model Facade is a good way to simplify the code in a Java Persistence client.
" He is a regular speaker on enterprise application design.
A JSF managed bean, UserNumberBean.
These two implementations are extensions of the standard Lifecycle and ViewRoot implementations that JavaServer Faces technology supplies.
Using Dynamic Faces With jMaki So far, you have seen how you can use Dynamic Faces to re-render existing JavaServer Faces components with Ajax.
Why has Sun decided to open source the Java ME platform?
sql, for  creating the database table.
You can download the sample archive for the Using Java  Persistence With JavaServer Faces Technology tip.
The  facade only holds the EntityManagerFactory and the  UserTransaction objects, both of which are thread-safe and can  be held and cached for subsequent requests.
They will continue to have access to the Sun licensee web site, knowledge bases, and engineering support for source code and TCKs.
Get into ij: java org.
The ability to add an icon to the tab  C.
The approach does not persist data.
In the case of the preceding example, you pass two parameters to the fireAjaxTransaction function.
It also contains a script, db.
Therefore, the Dynamic Faces paradigm is familiar to both Ajax developers and JavaServer Faces developers.
This allows it to use annotations that are useful when  accessing Java Persistence entities and related services in  the Java EE platform.
See the documentation for the ajaxZone tag for a complete list of attributes.
The pattern provides a single interface for operations on  a set of entities.
We want to accelerate the growth and adoption of the Java ME  platform by enabling developers to participate fully in its creation and evolution.
The id is  the primary key that is automatically generated when a row of  data is added to the database.
The Facade does not expose calling clients to  persistence-related exceptions.
EntityManager instances are not thread safe, so you should not  inject them into JSF managed beans that have a scope of session  or application.
The next section talks about another way to use Dynamic Faces when you want finer-grained control over how the components in your pages are Ajax-enabled.
Ignore the time changes.
Dynamic Faces also leverages the JavaServer Faces component model to efficiently manage client-side and server-side state.
Open sourcing Java ME will accelerate the adoption of a single platform, driving more implementation consistency and reducing fragmentation.
A web component that uses  a Facade to access the model tier does not have to be aware of all the details of the APIs for each entity.
Developers will be able to influence the direction of the Java ME platform and possibly make contributions that could end up in hundreds of millions of devices.
We need the  community's help to make sure that the Java ME platform evolves in the right direction and at the pace that the industry wants.
properties file in the TechTip-Facade  directory and set properties appropriately for your  environment.
EntityManager instances are not thread safe, so you should not  inject them into JSF managed beans that have a scope of session  or application.
Developers will be able to make code contributions such as bug fixes and proposed enhancements.
Running the Sample Code A sample package accompanies this tip that demonstrates the  techniques covered in the tip.
We think this is fair.
You can also use the  injected UserTransaction instance to control the transactions:    .
Note that you do not have to write a single line of JavaScript technology code to implement this example, nor do you need any custom components.
Note that you do not have to write a single line of JavaScript technology code to implement this example, nor do you need any custom components.
When you do this, you are telling Dynamic Faces to asynchronously update only that part of the component tree that you have identified with the ajaxZone tag.
And they will retain their full rights to use the Java ME source code, along with access to the TCKs and fully tested and productized solutions per their license agreements.
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EntityManager instances are not thread safe, so you should not  inject them into JSF managed beans that have a scope of session  or application.
The best part is that Dynamic Faces does all this behind the scenes, in a way that is completely consistent with the JavaServer Faces technology life cycle.
They will become more competitive by delivering a differentiated product to the market sooner.
Return those  instead of the entity objects.
When the user clicks the button, the input field, representing the input component, and the output text, representing the text component, are rendered again.
Pressing this  button navigates back to the initial page to allow more guesses.
He has experience with Servlet and JSP technologies.
Note that web components  should not hold EntityManager objects because doing so is not  thread safe.
Entity;    import javax.
