Overview Main Content. Utilizes the Red Hat dedicated security response team to track security issues, and deliver critical updates as they are identified. A web server that is backed by Red Hat's long term, predictable enterprise product lifecycles, security updates, and compatible with our management layer.
When you build the application using Ant, this is packaged in the app. When the application is deployed, you should be able to view the pre-populated data. This will take you to the information for the Hypersonic service MBean. Scroll down to the bottom of the page and click the invoke button for the startDatabaseManager operation. Deploying an application in JBoss is simple and easy. You just have to copy the EAR file to the deploy directory in the 'server configuration' directory of your choice.
If there are any errors or exceptions, make a note of the error message. You can safely redeploy the application if it is already deployed. To undeploy it you just have to remove the archive from the deploy directory. You will be forwarded to the application main page. In fact, the name Seam refers to the seamless manner in which it enables developers to use these two frameworks in an integrated manner. Seam automates many of the common tasks, and makes extensive use of annotations to reduce the amount of xml code that needs to be written.
The overall effect is to significantly reduce the total amount of coding that needs to be done. If you are new to Seam, you can find more introductory information from the following url and book:. The Seam Reference Guide.
Let's start off our examination of the Seam implementation in the same way, by examining how the Data Model is implemented. This is done in the Todo. The Entity annotation defines the class as an EJB3 entity bean, and tells the container to map the Todo class to a relational database table. Each property of the class will become a column in the table. Each instance of the class will become a row in this table. Since we have not used the Table annotation, Seam's "configuration by exception" default will name the table after the class.
However, EJB3 brings a lot of advantages to the table, including container managed security, message-driven components, transaction and component level persistence context, and PersistenceContext injection, which we will encounter a little further on. The Name annotation is specific to Seam, and defines the string name for Seam to use to register the Entity Bean.
This will be the default name for the relational database table. Each component in a Seam application must have a unique name. In the other components in the Seam framework, such as JSF web pages and session beans, you can reference the managed Todo bean using this name. If no instance of this class exists when it is referenced from another component, then Seam will instantiate one. The Id annotation defines a primary key id field for the component. GeneratedValue specifies that the server will automatically generate this value for the component when it is saved to the database.
Seam provides support for model-based constraints defined using Hibernate Validator, although Hibernate does not have to be the object persister used. The NotNull annotation is a validation constraint that requires this property to have a value before the component can be persisted into the database.
Using this annotation allows the validation to be enforced by the JSF code at the view level, without having to specify the exact validation constraint in the JSF code. We'll see how this is done in practice as we examine the implementation of the user interface. The index. The first thing that is different here is the Java Server Facelet code at the beginning, which works with the NotNull validation constraint of our todo class to enforce and indicate invalid input to the user.
Since there is no value already bound to that variable name, Seam will instantiate an entity bean of the todo class and return it to JSF, after storing it in the Seam context. The Seam context replaces the need for an intermediary bean.
The form input values are validated against the Hibernate Validator constraints specified in the todo class. JSF will redisplay the page if the constraints are violated, or it will bind the form input values to the Todo entity bean. Entity beans shouldn't do database access or transaction management, so we can't use the Todo entity bean as a JSF action listener.
Instead, creation of a new todo item in the database is accomplished by calling the persist method of a TodoDao session bean. Seam will intercept the persist method call and inject the todo entity from the session context. Let's have a look at the TodoDao class defined in TodoDao.
First of all notice that this is a stateful session bean. Seam can use both stateful and stateless session beans, the two most common types of EJB3 beans. The In and Out annotations define an attribute that is injected by Seam.
The attribute is injected to this object or from this object to another via a Seam context variable named todo , a reference to the Seam registered name of our Todo class defined in Todo.
The PersistenceContext annotation injects the EJB3 Entity manager, allowing this object to persist objects to the database. Note that this session bean has simultaneous access to context associated with web request the form values of the todo object , and state held in transactional resources the EntityManager. This is a break from traditional J2EE architectures, but Seam does not force you to work this way. You can use more traditional forms of application layering if you wish. The DataModel annotation initializes the todos property, which will be outjected or "exposed" to the view.
The Factory annotated method performs the work of generating the todos list, and is called by Seam if it attempts to access the exposed DataModel property and finds it to be null. Notice the absence of property access methods for the todos property. Seam takes care of this for you automatically.
Let's take a look at the JSF code that we use for displaying and editing the list of todos, to get an idea of how to use these interfaces in practice. Using the DataModel exposed property of the Session Bean it becomes trivial to produce a list of todos:. The todos object is then outjected once the factory method is done since it is annotated with the DataModel annotation.
Here we see the same factors in play. JSF validation code taking advantage of the validation constraints defined in our Entity Bean, and the use of the todoDao Session Bean's update and delete methods to update the database. The call from todos. Setting its id property causes the todoDao to retrieve the appropriate record from the database. The functionality that allows the edit page to be called with a parameter in this way is implemented through pages.
Let's have a look at the pages. Seam drastically reduces the amount of xml coding that needs to be done. One file that is of interest is the pages.
The pages. Among other things it can be used in a Seam application to define exception handlers and redirections. In the case of our sample application we are using it to define a Seam page parameter.
This defines a parameter named tid for the edit. When the edit. This completes our walkthrough of the sample Seam application. For further, detailed information on developing applications using the Seam framework, please refer to the The Seam Reference Guide. This datasource is configured to use the embedded Hypersonic database instance shipped by default with the distribution.
Having a database included with JBossAS is very convenient for running the server and examples out-of-the-box. However, this database is not a production quality database and as such should not be used with enterprise-class deployments.
As a consequence of this JBoss Support does not provide any official support for Hypersonic. In this chapter we will explain in details how to configure and deploy a datasource to connect JBossAS to the most popular database servers available on the market today. Datasource configuration file names end with the suffix -ds. Local transaction datasources are configured using the local-tx-datasource element and XA-compliant ones using xa-tx-datasource. The example file generic-ds. If you look at the example files firebird-ds.
The syntax is not specific to datasource configuration and is used, for example, in the jms-ds. This database server is used in millions of installations ranging from large corporations to specialized embedded applications across every continent of the world.
In this section, we'll be using the community version of their database server GA 5. Then create a text file in the deploy directory called mysql-ds. The datasource is pointing at the database called test provided by default with MySQL 5. Using the test client described in Section Oracle is one of the main players in the commercial database field and most readers will probably have come across it at some point. Then create a text file in the deploy directory called oracle-ds.
Before you can verify the datasource configuration, Oracle XE should be reconfigured to avoid port conflict with JBossAS as by default they both start a web server on port The web server started by Oracle XE to provide http-based administration tools is now running on port Start the JBossAS server instance as you would normally do.
You are now ready to use the test client described in Chapter 6. Then create a text file in the deploy directory called mssql-ds.
The persistence manager of JBoss Messaging uses the default datasource to create tables to store messages, transaction data and other indexes. Configuration of "persistence" is grouped in xxx-persistence-service. JBoss Application Server ships with a default hsqldb-persistence-service. You can view the hsqldb-persistence-service.
Please note that the Hypersonic database is not recommended for production environments due to its limited support for transaction isolation and its low reliability under high load. First of all, you should create an exploded WAR archive under the deploy directory which is simply a folder named " jdbcclient. In this folder, create a text document named client. A list of users and password should show up as a result of the jdbc query:. O'Reilly, Norman Richards, Sam Griffith. Manning, Christian Bauer, Gavin King.
Prentice Hall, Michael Yuan, Thomas Heute. JBoss Community. Introduction 1. Software Versions 2. Help Contribute 1. Getting Started 1. Pre-Requisites 1. Hardware and Operating System Requirements 1. Configuring Your Java Environment 2. Installation Alternatives 3. Installation With Binary Download 3. Download and Installation 4.
Installation With Source Download 4. Installing and configuring ANT 4. Building with Apache ANT 5. Uninstall JBoss 7. Test your Installation 8. Server Structure 8. Server Configurations 8. Starting and Stopping the Server 8. The JMX Console 8. Hot-deployment of services in JBoss 8. JBoss AS uses a modular structure giving you two different options for setup—standalone server and managed domain.
Standalone server is best for running JBoss AS as a single-server instance, while managed domain is best if you have multiple servers and want to be able to manage them from a single access point. A quick word about this kind of structure: with modules you have to set explicit dependencies to be defined on all other modules within the system. For Windows, change the colon path separator to a semicolon.
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