Build a Web Application With JDeveloper 11g Using EJB, JPA, And Java Server Faces

8/3/2019 Build a Web Application With JDeveloper 11g Using EJB, JPA, And Java Server Faces

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Build a Web Application with JDeveloper 11 g Using EJB, JPA, and JavaServer Faces

Purpose

In this tutorial, you use Oracle JDeveloper 11g Version 11.1.1.2.0 to build a web application. To build the data model, you usethe EJB diagrammer, utilizing EJB 3.0 and Java Persistence API (JPA). For the web client, JavaServer Faces (JSF) is used. A

master-detail page, a query/edit page and a search page are included in the user interface.

Time to Complete

1 hour and thirty minutes

Topics

The tutorial covers the following topics:

OverviewScenarioPrerequisitesCreating a Database ConnectionBuilding the Data Model using EJB 3.0Creating a New Project for the User InterfaceCreating the Page FlowCreating a Master-Detail JSF PageCreating a Query PageCreating a Search P ageRunning the JSF Pa gesS ummary

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Overview

The application reflects the Model-View-Controller architecture. The model is provided by EJB Components, while the view andcontroller are provided by JavaServer Faces.You use the ADF Faces set of JSF-compatible components to build a richer webinterface.

You first build the data model portion of the application. The Java Persistence API (JPA) provides a POJO persistence modelfor object -relational mapping. The Java Persistence API was developed by the EJB 3.0 software expert group as part of JSR220, but its use is not limited to EJB software components. It can also be used directly by web applications and applicationclients, and even outside the Java EE platform, for example, in Java SE applications.

Enterprise JavaBeans (EJB) technology is the server-side component architecture for Java Platform, Enterprise Edition (JavaEE) that encapsulates business logic. EJB technology enables rapid and simplified development of distributed, transactional,secure and portable applications based on Java technology.

The Java Persistence API is the standard API for the management of persistence and object/relational mapping. It provides anobject/relational mapping facility for application developers using a Java domain model to manage a relational database. TheJava Persistence API is part of the Java EE platform. It can also be used in Java SE environments.

In the tutorial, you implement a persistence model by developing Session and Entity beans. These beans use the EJB 3.0

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annotations and JPA for model persistence.

EJB 3.0 entities represent persistent data from the database, such as a row in a customer table or an employee recordin an employee table. Entities are also sharable across multiple clients. You use the Entity Manager API to create,update, delete and query the persistence model.Session beans perform a distinct, decoupled task such as checking credit history for a customer.

You then create a master-detail form for viewing Departments and Employees information. Following this basic master-detailpage creation, you create a query page to find a particular employee, and you then edit the employee's record. You also create

a search page to search for a particular department.

While developing and testing the application, you use JDeveloper's embedded Java EE application server.

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Scenario

You create persistence objects for the DEPARTMENTS and EMPLOYEES tables. The persistence objects are implemented asEntity Beans. Default getter and setter methods are created for department and employee data. These methods areimplemented as part of a session bean. Then you create a Master Detail JSF page based on Departments and relatedEmployees, a Query/Edit JSF page enabling a search for, and update of an employee's data and a search page that allowsinput of search criteria to find a particular department.

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Prerequisites

1. Have access to or have installed Oracle JDeveloper 11 g Version 11.1.1.2.0. You can download it from OracleTechnology Network .

2. Have access to or have installed the Oracle Sample Schemas, included with the Oracle 10 g or Oracle 11 g

database.The tutorial uses the HR schema. Specifically, the pages work with the DEPARTMENTS and EMPLOYEES tables.

Instructions for installing the HR schema and creating a connection to it in JDeveloper are available online at:

http://www.oracle.com/technology/obe/obe11jdev/11/common/connection11g.htm

3. Start JDeveloper by selecting Start > All Programs > Oracle Fusion Middleware > JDeveloper Studio 11.1.1.2.0

4. If the Migrate User Settings dialog box opens, click No .

If prompted for a User Role, choose Default Role .

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Close the Tip of the Day window.

5. The JDeveloper IDE should now be displayed.





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Creating a Database Connection

Java Database Connectivity (JDBC) is a standard API that is used for connecting a Java application to relational databases.JDeveloper uses a connection navigator to maintain connection information for your application. The connection navigator makes it easy to create, manage, and test database connections.

If you haven't already established a connection to the database, then do so by performing the following steps:

1. Click the Database Navigator tab on the Application Navigator. If the Database Navigator tab is not visible, choose

View > Database > Database Navigator from the JDeveloper main menu.






2. Right-click the IDE Connections node and choose New Connection from the context menu.

3. In the Create Database Connection Dialog, in the first section enter the following values:

Connection Name HRConnConnection Type Oracle JDBCUsername hrPassword hrSave Password (checked)





Note : It is secure to deploy the password since it gets encrypted.

In the Oracle (JDBC) Settings section, enter the following values:

Driver thinHost Name localhostJDBC Port 1521

Choose the solution that applies best to your environment by completing one of the 2 following lines:

SID orclService Name XE

4. Click Test Connection .

If the database is available and the connection details are correct, you see the word Success! displayed in theStatus window.

If an error occurs, verify the connection settings, make any necessary changes, and then retest the connection.

If the connection is successful, click OK to complete the connection.





5. The Database Navigator should look like this:

You have just created a connection to the database that will supply data for the application you build in this tutorial.

The next section uses this connection.

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Building the Data Model with EJB 3.0 Using the EJB Diagrammer

The data model provides data access and validation for an application. The data is always validated by the model, regardless of the client implementation. This cleanly separates the validation and business rules from the user interface.

In the next few steps, you create an application in JDeveloper and create a data model for your application.

Create a New Application and Project

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Create the Persistence ModelCreate the Data Model and test itRun the Data Model outside Java EE container Create ADF data controls from EJB Session Beans

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Creating a New Application and Project

In JDeveloper, you always work with projects contained in an application. The application is the highest point in the controlstructure.

A JDeveloper project is an organization structure used to logically group related files You can add multiple projects to your application to easily organize, access, modify, and reuse your source code. In the Application Navigator, projects are displayedas the second level in the hierarchy, under the application.

It is considered best practice to use projects to separate the model code from the code written for the view. In this tutorial, youcreate one project for the EJB Components model, and later on a second one for the JSF views.

Before you create any components, you must first create an application and project. To do this, perform the following steps:

1. Click the Application tab to go back to the Application Navigator.

Click the New Application icon.

2. In the Create Application dialog box, enter the Application Name HR_EJB_JPA_App . Notice that as you enter the

application name, the directory name changes automatically.

Enter oracle as the Application Package Prefix.

Select Generic Application from the Application Template list. This creates an Application and a single non-configured project.










Click Next .

3. In the Create Project dialog, set Project Name to EJBModel then click Finish .





4. In the Navigator pane, click the Database Navigator tab.

5. Select the HRConn connection in the IDE connections list and drag and drop it inside the HR_EJB_JPA_App node

to make the connection available for your application.





6. Click the Application Navigator tab. You see the application and project you just created.

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Creating the Persistence Model

In this section of the tutorial, you create the persistence model for Departments and Employees using EJB 3.0 entity beans.

To create EJB 3.0 entity beans, perform the following steps:

1. In the Application Navigator, right click the EJBModel node and select New from the context menu.







2. In the New Gallery select the All Technologies tab, then select Business Tier | EJB as the category and double click

the Entities from Tables item.

3. In Select EJB Version, select EJB 3.0 -- JPA Entities as the EJB version, then Next .





4. Click Next to skip the persistence unit definition.

5. In the Type of Connection page choose the Online Database Connection option. Then click Next .

6. In the Database Connection Details page, select HRConn as the connection to use.





Click Next

7. Click Query to retrieve the available objects for the HR schema. Then select DEPARTMENTS and EMPLOYEES

and shuttle the selection in the selected pane using the right arrow button .

Click Next .





8. In this step, make sure the package name is oracle .

Click Next , then Finish .

9. In the Application Navigator one java file is created for Departments and one for Employees .

10.

Click the Save All icon to save your work.

11. Right click the EJBModel node in the Application Navigator and select New .





12. In the New Gallery select Business Tier | EJB as the category and double click EJB Diagram (JPA/EJB 3.0) .

13. In the Create EJB Diagram dialog, change the default name for the diagram (EJB Diagram1) to EJB3 and verifyoracle is the Package name.





Click OK.

On the Associate Diagram With Persistence Unit dialog, click OK to accept the proposed Persistence Unit EJBModel(EJBModel.jpr).

14. A new empty diagram opens in the diagram editor.





15. Select the Departments and Employees entities from the Application Navigator then drag and drop them onto the

diagram.





16. The diagram displays the EJB components that you just created from the Departments and Employees tables.

Reorganize the layout of the diagram to have both entities horizontally aligned. You can tidy the diagram by selectingrelationships and using the Straighten lines option from the context menu.

17.


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Creating the Data Model and Testing it

A session facade presents client objects with a unified interface to the underlying EJBs (Enterprise JavaBeans). The clientinteracts only with the facade, which resides on the server and invokes the appropriate EJB methods. As a result, dependenciesand communication between clients and EJBs are reduced.If you are performing remote access without a session facade, numerous remote calls are needed for the clients to access EJB3.0 entities directly over the network. This results in a large amount of network traffic that negatively affects performance. Inaddition, without a facade the client depends directly on the implementation of the business objects, so that if the interface of an EJB changes, client objects have to be changed as well.

In this section, you create a session bean that implements a method to find employee and department records.

1. In the Component Palette, select the EJB Components library and open the EJB Nodes .







2.

Select the Session Bean component then drag and drop it onto the diagram.

The Create Session Bean Wizard opens. If necessary, click Next on the Welcome step.

3. In the EJB Name and Options step, set the EJB Name to HRFacade and make sure that the following values are

properly set:

Session Type StatelessTransaction Type Container

Generate Session Facade Method (Checked)Entity Implementation JPA Entities





Persistence Unit EJBModel

then click Next .

4. In the Session Facade step, any entities in this project appear as a node in the tree control. You can select the

checkbox to include all entity methods this entity exposes, or expand the nodes and select a subset of methods.Expand the Employees and Departments nodes and select the merge, remove and the getFindAll methods for each entity, then click Next .

5. In the Class Definition step, make sure that the full name for Bean Class is oracle.HRFacadeBean , and then click

Next .





6. In the following step, ensure that both Remote and Local interface implementations are selected. The remote

interface is used for client applications that run in a separate virtual machine, such as Java clients whereas localinterface is used for client applications that run in the same virtual machine, such as Web clients .

Click Next to review the summary of the created classes and then Finish .

7. The Application Navigator should look like this:





The session bean is made up of three files: HRFacadeBean - contains the session bean code. HRFacade -describes the capabilities of the bean for remote clients and HRFacadeLocal describes the capabilities for the localclient.

8. Double click the Employees entity bean on the diagram to open the source code for the class.

9. Named queries enable you to define queries at design time and then use them at run time. The wizard created one

NamedQuery metadata statement in the Employee entity. This query retrieves all rows from the Employees table.@NamedQueries({@NamedQuery(name = "Employees.findAll", query = "select o from Employees o")





})

Note : Any symbol in Java code beginning with @is known as an annotation. The use of annotations allows you toadd metadata to your objects. Examples of annotations follow:

Annotation Description

@Entity Identifies the file as an EJB 3.0 entity

@NamedQuery A query that can be used at run time to retrieve data

@Table Specifies the primary table for the entity@Id Can define which property is the identifier for the entity

@Column Specifies a mapped column for a persistent property or field

@ManyToOne Specifies a type of foreign key relationship between tables

@JoinColumn Specifies the join column and referenced column for aforeign key relationship

10. Add a comma at the end of the last @NamedQuery statement, then add a query to the class that retrieves

employees by name.

Add the following statement:

@NamedQuery(name = "Employees.findByName",query = "select o from Employees o where o.firstName like :p_name")

So that the code looks like the following:

@Entity@NamedQueries({@NamedQuery(name = "Employees.findAll", query = "select o from Employees o"),@NamedQuery(name = "Employees.findByName", query = "select o from Employees owhere o.firstName like :p_name")})

If required, use the ALT + Enter keystroke combination to import the javax.persistence.NamedQuerieslibrary.

Note : What makes these objects different from other Java files are the annotations that identify them as EJBentities. A key feature of EJB 3.0 and JPA is the ability to create entities that contain object-relational mappings byusing metadata annotations rather than deployment descriptors as in earlier versions.





11.Click the Make icon to compile the Employees.java class.

Make sure that the Message - Log window does not report any errors.

12. Add the new method to the session bean doing the following:

Right-click the HRFacadeBean node in the Application Navigator and select Edit Session Facade from the contextmenu.





13. Expand the Employees node of the dialog. Notice that the new named query getEmployeesFindByName

appears as an exposable method. Select it and click OK .





14. JDeveloper provides a way to test the EJB by creating a sample client. To do so, right click HRFacadeBean and

select New Sample Java Client from the context menu.





15. Select IntegratedWebLogicServer as the Application Server Connection.

Click OK.

16. Review the code of the HRFacadeClient class and correct the reported error for the

getEmployeesFindByName() method by adding a value parameter "P%" so that it looks like the following:






17. Right click the HRFacadeBean in the Application Navigator and select Run from the context menu to launch the

facade bean in WebLogicServer.

Wait until the WebLogicServer is started.





18. Right click HRFacadeClient and select Run from context.

19. The Log window returns the database data based on the three methods the client contains.





20. To better visualize the result of the findByName method, in the HRFacadeClient java class, comment out the fo r

loop corresponding to the getEmployeesFindAll() method, and comment out the fo r loop corresponding tothe getDepartmentsFindAll() method. Your code should look something like this:

21.

Click the Make button to recompile the class, and ensure that no errors are returned.

22. Right click the HRFacadeClient class and select Run from context.





23. The Log window should now display the returned rows retrieved by your ' P% ' clause.

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Running the Java Service outside Java EE container

A persistence unit can be configured to run inside or outside the container. In EJB 3.0, you can run entities in a pure Java SEenvironment, without using an application server. One reason you might do this is to create a simple Java SE testbed (usingJUnit, perhaps) to test your entity behavior without the overhead of deploying/executing in an application server. Another reason is you may want to run a Swing application locally.

In this section, you create a session bean that implements a method to find employee and department records.

1. Create a new persistence unit to run the java service outside the Java EE container.

Right-click the META-INF | persistence.xml and select New Java Service Facade from the context menu.







2. In the Java Service Class panel, you can choose to create a new persistence unit (in the next panel) or use an

existing unit. Select Choose a Persistence Unit or Create one in the next Panel, and check the Generate amain() method checkbox.

Click Next .

3. Name the the Persistence Unit outside . Choose JDBC Connection and make sure the JDBC connection is set toHRConn.





Click Next .

4. All methods should be selected by default. Deselect some of them so that your selection looks like the following

image.

Click Next then Finish .

5. In the source editor window, for the JavaServiceFacade class, add a new line after the // TODO comment and

enter the following statement:

Employees a = javaServiceFacade.getEmployeesFindByName("P%").get(0);

notice that you can use code coach to help you with typing the syntax (CTRL + space bar)

Type so p and hit CTRL + Enter to insert a System.out.println() statement. Add a.getLastName() inside the

parenthesis so that your class now looks like the following:// TODO Employees a = javaServiceFacade.getEmployeesFindByName("P%").get(0);





System.out.println(a.getLastName());

6.

Click the Make button to compile the class and save your work.

7. Right-click the JavaServiceFacade node in the Application Navigator and select Run from context.

8. The Log window displays the result of the execution of the class running outside Java EE container, returning the

lastName of the first of the retrieved records ( P ayam Kaufling).

9. Double-click the META-INF | persistence.xml node to display the contents of the file.

10. Both persistence units are described. The default inside one and the newly-created for outside Java EE run. Click

the Source tab to review details.





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Creating ADF Data Controls from EJB Session Beans

You now expose the EJB as a data control for the Oracle ADF framework. This simplifies the way that you bind user interfacesto the EJB. To learn more about the ADF Framework visit:http://oracle.com/technology/products/adf

To create ADF data controls from EJB Session Beans, perform the following steps:

1. Right-click the HRFacadeBean node in the Application Navigator and select Create Data Control from context.







2. In the Choose EJB Interface dialog, select Local , and click OK .






3. The Application Navigator should now look like this:





4. You can collapse the EJBModel project node.

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Creating a New Project for the User Interface

It is considered best practice to use projects to separate the model code from the code written for the view. For this reason youcreated one project for the EJB Components model, and you now create a second one for the JSF views.

To do this, perform the following steps:

1. On the application name bar, click the Application Menu icon

select New Project from context.

2. In the New Gallery, select the Generic Project item.







Click OK.

3. In the Create Project dialog, set Project Name to UserInterface then Finish .





4. In the Application Navigator, right click the UserInterface node and select Project Properties from context.





5. In the Project Properties dialog, select the JSP Tag Libraries node. Select Distributed libraries then press the Add button.

6. In the Tag Libraries list, select ADF Faces Components 11 .





Click OK.

The libraries are added to the project.

7. Still in the Project Properties dialog, select the Technology Scope node. In the Project Technologies tab, select JSF in the





Available pane, and using the right arrow button, shuttle it in the Selected pane. Notice that selecting JSF automaticallypropagates the required associated technologies (Java - JSP and Servlets)

Click OK. Then, click the save all icon to save your work.

8. The Application Navigator should now look like this:

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Creating the Page Flow

You now use JDeveloper's JSF Navigation Modeler to diagrammatically plan and create your application's pages, and thenavigation between them.

1. In the Application Navigator, double click the UserInterface | Web Content | WEB_INF | faces-config.xml node toopen a page flow diagram.






2. The empty diagram opens. Notice the Component Palette to the right of the diagram editor. You use this to create

components for the JSF Navigation Model.

3. In the JSF Navigation Diagram page of the Component Palette, select JSF Page , and click in thediagram where you want the page to appear. Rename the page browse .

4. From the Component Palette, drag and drop a JSF Page next to the previous one. Rename the page query .





5. From the Component Palette, drag and drop another JSF Page below the first one. Rename the page search .

6. Select JSF Navigation Case in the Component Palette. Click the icon for the source JSFpage ( browse ), and then click the icon for the destination JSF page ( query ) for the navigation case.

7. Modify the default label, 'success' , by clicking it and typing query over it. Notice that there is a warning iconabove the Navigation Case. This is because you have not yet created the JSF pages and so indicates that theNavigation Case would be looking for a page that doesn't exist. This warning goes away when you create therespective pages.





8. JDeveloper gives you three views of the faces-config.xml file. You have already used the diagram view, but thesame information is also accessible through a declarative dialog as well as directly in the source .

Click the Overview tab at the bottom of the screen. Click Navigation Rules in the left-hand table to display existingNavigation Rules.

Click the Source tab at the bottom of the screen. The <from-view-id> tag identifies the source page, and the <to-view-id> tag identifies the destination page.





9. Switch back to the diagram view by clicking the Diagram tab, and select JSF Navigation Case in the Component

Palette. Click the icon for the source JSF page ( query ), and then click the icon for the destination JSF page( browse ) for the navigation case.

10. Modify the default label, 'success' , by selecting it and typing browse over it.

11. In the same way add navigation cases between the browse and search JSF pages. Name the one that goes tothe search page, search , and the one that returns, browse .Your diagram should now look something like the image below.

12.

Click the save all icon to save the diagram.

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Creating a Master-Detail JavaServer Faces Page






In the next few steps, you create a JavaServer Faces Page using ADF Faces components for the Departments EmployeesMaster Detail page.

1. On the Page Flow diagram, double-click the browse icon to launch the Create JSF JSP wizard.

2. The file name should be browse.jspx . Check the Create as XML Document checkbox, and in the Initial Page Layout and

Content area, click the Quick Start Layout radio button. It is best practice to use the quick start layouts to avoid display issues.Click Browse to choose a layout.





3. In the Component Gallery accept the default, One Column layout category, and click Apply Themes in the Options pane.

Themes add color styling to some of the components used in the quick start layouts and create a nicer-looking page.

Click OK to save the layout selection. In the Create JSF Page dialog click OK to create the page.

You now have an empty browse.jspx page. In the next few steps, you add a data-bound ADF Faces component to the page.This component displays a department along with the employees belonging to the department.

4. In the Component Palette, ADF Faces library, select the layout section and drag a Panel Stretch Layout component onto thepage





5. From the Component Palette, drag a Panel Splitter component onto the middle of the page (the cursor should be to the left of the center tag).

6. Open the Data Controls accordion and expand the HRFacadeLocal node, then drag and drop the DepartmentsFindAll node

within the first facet.





In the pop up menu, select Forms | ADF Read-only Form

7. In the Edit Form Fields, check the Include Navigation Controls option and delete all columns except the following:

departmentId departmentNamelocationId





Click OK.

8. In the Component Palette , Layout group, select Panel Collection and drag and drop it into the second facet.





9. In the Data Controls, expand the departmentsFindAll node, select the employeesList node and drop it in the second facet.

In the pop up menu, select Tables | ADF Read-only Table

10. In the Edit Table Columns dialog delete all columns except the following:

commissionPct,email,employeeId,firstName,hiredate,jobId,lastName,

phoneNumber,salary, and select Row Selection , Filtering and Sorting options.





Click OK.

The page should now look like this:





11. In the Property Inspector set the Column Selection property of the table to single .

12. In the Structure pane, select the af:panelSplitter pane and in the Property Inspector, set the Orientation to vertical .





13. Select the af:panelStretchLayout tag and using the Property Inspector, for the Style | Box tabs set the Width to 600 Pixels andthe Height to 400 Pixels.

14. Reduce the height of the Departments block.





15. You want the employees section of this page to refresh when the user navigates between departments. Set the Partial PageRendering trigger to fire when the user clicks any of those buttons.

Select the Employees table.

In the Properties Inspector, click Edit for the Behavior | PartialTriggers property. (The Edit button is on the far right of the field).

16. In the Edit Property dialog, expand facet (first) | panelFormLayout - Departments | facet (footer) | panelGroupLayout to

expose the navigation buttons. Use the shuttle buttons to add all four buttons to the selected list.





Click OK. Now, when the user clicks any of the 4 buttons, the employees list will refresh to reflect the employees within thedisplayed department.

17. From the Component Palette, Common Components, select the Panel Menu Bar component and drop it onto the Facet Top tag,

in the Design view of the page.

18. Click the Menu component then drag and drop it inside the Menu Bar .





19. In the Property Inspector change the Text from menu 1 to Options .

20. Click the Behavior tab and set the Detachable field to true .

21. In the Structure Pane, right click the af:menu tag and from context select Insert Inside af:menu | MenuItem .





22. In the Property Inspector, using the Common tab, change the Text to Query and from the drop down list set the Action to

query .

23. Repeat step 21 to add another menu item. Using the Property Inspector change the Text of this menu item to Search and from

the drop down list set the Action to search .





24.

Click the save all icon to save your work.

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Creating a Query/Edit Page

In the next few steps, you use ADF Faces to build a query page to edit Employees.

1. Switch back to the Page Flow diagram (click the faces-config.xml tab), and double-click the query icon to launch the pagewizard.

2. The file name should be query.jspx . Check the Create as XML Document checkbox, and in the Initial Page Layout andContent area, click the Quick Start Layout radio button. Click Browse to choose a layout.






3. In the Component Gallery, accept the One Column category and click Apply Themes in the Options pane.






You now have an empty query.jspx page.

4. In the Data Controls accordion, under the HRFacadeLocal node, select the getEmployeesFindByName(Object) node and drop

it onto the page.





From the popup menu, select Parameters | ADF Parameter Form .

5. In the Edit Form Fields click OK to accept the proposed fields.

6. The page design should look like this:





.7. In the Data Control accordion, expand the getEmployeesFindByName node and select the Employees node. Drop it onto the

page below the Parameter Form.

From the popup menu, select Forms | ADF Form .

8. In the Edit Form Fields, check both checkboxes ( Include Navigation Controls - Include Submit Button ) and delete all columns

except the following:commissionPct,email,employeeId,firstName,





hiredate,jobId,lastName,

phoneNumber,salary.

Click OK.

9. The design for the query page should look like this:





10. This page needs to be updatable; to specify this, select the mergeEmployees(Employees) method in the Data Controlspane, and drop it onto the Submit button.





In the Edit Action Binding dialog, in the Parameters section, click the down arrow in the Value field and select Show ELExpression Builder .

11. In the Variables dialog, expand ADF Bindings | Bindings |getEmployeesFindByNameIterator | currentRow and select

dataProvider . Notice that as you select each node in the expression. the editor adds it to the expression in the top of thewindow.





Click OK, then click OK again.

12. In the Confirm Component Rebinding dialog, click OK .

13. Back in the design view of the query page, select the mergeEmployees button





14. In the Property Inspector, Common tab, set the Text value to Save and in the Button Action section, set the the Action to

browse from the drop down list.

15. With the button still selected, right-click and choose Go To Page Definition from the context menu.

16. In the Page Definition file, select getEmployeesFindByNameIterator in the Executables box and in the Property Inspector,

Advanced tab, set the Refresh property to ifNeeded .





Setting this property maintains row concurrency for ADF Faces and JSP/JSF pages.17.

Click the Save all icon to save your work.

18. Your page should now look like this:





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Creating a Search Page

In the next few steps, you use ADF Faces to build a search page using the new ADF query feature.

1. Switch back to the Page Flow diagram (click the faces-config.xml tab), and double-click the search icon to launch the pagewizard.






2. The file name should be search.jspx . Check the Create as XML Document checkbox, and in the Initial Page Layout and

Content area, click the Quick Start Layout radio button. Click Browse to choose a layout.

3. In the Component Gallery, accept the One Column category and click Apply Themes in the Options pane.






You now have an empty search.jspx page.

4. In the Data Controls accordion, under the HRFacadeLocal node, expand the departmentsFindAll node and then the Named

Criteria node. Select All Queriable Attributes and drag and drop it onto the page.





From the popup menu, select Query | ADF Query Panel with Table.

5. In the Edit Form Fields delete all columns except the following:departmentId departmentNamelocationId





6. The design for the search page should look like this:

.

Running the JSF Pages

Now that you have built your application, you need to test it. JDeveloper makes it easy to test JSF pages through a built-in





application server. The server is automatically launched when you test a page from within JDeveloper.

The next few steps take you through the testing process.

1. To test the pages, return to the page flow diagram. Right click the browse page icon and select Run from thecontext menu.

2. Your page is loaded in your default browser and should look like the following:

3. Click the Next button to find a department with several employees in its list, for example department 30. Then clickin the firstName column and experiment sorting the names in ascending/descending order using the up/downarrow icons.





4. Scroll right to select the lastName column header and move it left to position it in the table just after the

firstNam e column.

5. Select the column headers and reorder the columns in this sequence: employeeId, firstName ,





lastName , email , jobId, salary, hireDate , commissionPct....

6. On the top left of the page, click Options --> Query and move the menu to another location on your page. Then

press the Query button.





7. The query page opens in the browser. In the queryEmployeesFindByName_p_name field enter any name or

partial name. i.e. A% then click the getEmployeesFindByName button.





8. Experiment with the navigation buttons if your query retrieved more than one record.

9. Click in the hireDate field to see the calendar component display.





10. Increase Alexander's salary to 10000 and click the Save button to commit the change and take you back to the

browse page.





11. Back in the browse page, rerun the A% query to check that your update to Alexander's salary has been saved.Then click the Options menu again, and this time select Search to navigate to the search page.





12. In the search criteria area, click the Any radio button in the Match field, and type IT in the departmentName field.

Click Search .





13. The search returns four departments that contain IT in their name.





Notice some of the other functionalities of the ADF query feature, including advanced searches and the ability tosave searches.

14. You have successfully completed this OBE. Close the browser window

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Summary

In this tutorial, you created an end-to-end application using Oracle JDeveloper, EJB 3.0, JPA, and JSF pages. You learned

how to :

Create a database connectionBuild the data model using EJB 3.0 and EJB diagramCreate the page flowCreate a Master-Detail JSF pageCreate a Query/Edit pageCreate a Search pageRun the JSF pages

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Build a Web Application With JDeveloper 11g Using EJB, JPA, And Java Server Faces