Oracle JHeadstart Developer's Guide - Downloads - Oracle

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3.3.4. Setting View Object Control Hints You can specify Control Hints for an attribute in a View Object. See the screenshot below. JHeadstart might use some of these properties in the same way as Control Hints specified for an Entity Object. See section Setting Entity Object Attribute Properties used by JHeadstart fore more information. 3.3.5. Determining the Order of Displayed Rows In most situations you want to order the queried records. To accomplish this you must add an Order By clause to each View Object. Attention: In general, there is NO DEFAULT sort order you can rely on. 1. Select the View Object, right mouse click, select Edit to open its Properties dialog. 2. Go to the Query node and enter the Order By clause. You can press the Edit button to select available attributes. Often, the view is ordered by the Descriptor attribute. It may also be ordered by a lookup attribute. 3. Be sure to use the 'Test' button to verify the query. 3 - 18 Creating Business Components JHeadstart Developer's Guide
It is also possible to let the user order the records as desired in a page with table format. See chapter 5, section “Allowing the user to sort data in a table page” for more detail on how to do this. 3.3.6. Creating Calculated or Transient Attributes Sometimes you want to show an attribute that does not exist in the correct form in the database. For example: you want a read-only attribute FULL_NAME based on the FIRST_NAME and LAST_NAME attributes. In such cases, you need to add a calculated or transient attribute. Note the important difference between a calculated and a transient attribute: • A calculated attribute is present in the SQL query: the calculation is done by SQL at retrieval time. So a calculated attribute is only recalculated when the query is re-executed. Imagine a calculated attribute FullName that is a concatenation of FirstName and LastName. When the FirstName is changed in the application, the data needs to be requeried to refresh FullName. Only use a calculated attribute for read-only fields. • A transient attribute is not present in de SQL query. You have to calculate the value in a get method in the View Object. Every time the transient attribute value is needed, the get method is called and the transient value is recalculated. So you have no synchronization issues when using a transient attribute. The only drawback of a transient attribute is that you have to code a get method in the ViewRowImpl class. Reference: See also the Oracle Application Developer Framework Developer’s Guide for Forms/4GL Developers Release 10.1.3, section 7.6: Adding Calculated and Transient Attributes to an Entity-Based View Object. 3.3.6.1. Steps to create a calculated attribute 1. Select the View Object, right mouse click, select Edit to open its Properties dialog. 2. Go to the Attributes node and click on 'New'. 3. Enter an appropriate name for the attribute. 4. Check ‘Mapped to Column or SQL’. 5. Give the attribute an alias. 6. In the Expression text area, key in the SQL expression to create the concatenated string. Note that if you have included lookup attributes in your view definition, then you must include the alias you have given to the selected entity objects in the SQL Expression: For example: LAST_NAME || ', ' || FIRST_NAME JHeadstart Developer's Guide Creating ADF Business Components 3 - 19
Page 1 and 2: ORACLE JHEADSTART 10g for ADF (RELE
Page 3 and 4: CONTENTS CHAPTER 1 GETTING STARTED
Page 5 and 6: 4.7. Customizing Using Generator Te
Page 7 and 8: 6.13.3. Generating the Button that
Page 9 and 10: CHAPTER 11 INTERNATIONALIZATION AND
Page 11 and 12: CHAPTER 1 Getting Started Developin
Page 13 and 14: 1.1.3. What is Oracle JHeadstart? F
Page 15 and 16: 1.2. Roadmap to Developing ADF Appl
Page 17 and 18: 1.2.3. Design and Generate Web Page
Page 19 and 20: Web Reference: : Oracle Application
Page 21 and 22: CHAPTER 2 Set Up Project for Team-
Page 23 and 24: • The files that most often are m
Page 25 and 26: JHeadstart Developer's Guide Gettin
Page 27 and 28: • Create a New Application (choos
Page 29 and 30: 2.2.4. Creating Database Connection
Page 31 and 32: 2.3. Organizing JHeadstart Applicat
Page 33 and 34: 2.4. Defining Java Package Structur
Page 35 and 36: CHAPTER 3 Creating ADF Business Com
Page 37 and 38: Reference: See the Oracle Applicati
Page 39 and 40: 3.2. Creating the Entity Object Lay
Page 41 and 42: 3.2.4. Generating Primary Key Value
Page 43 and 44: Weblog Steve Muench: “Why do I ge
Page 45 and 46: 3.2.6. Implementing Business Rules
Page 47 and 48: 2. Choose List Validator and enter
Page 49 and 50: 3.3. Creating View Objects and Appl
Page 51: user action. The solution is shown
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Page 57 and 58: Attention: You can have multiple le
Page 59 and 60: CHAPTER 4 Using JHeadstart T his ch
Page 61 and 62: 4.1.1. Input Output • The type of
Page 63 and 64: 4.2.2. Enabling JHeadstart on an ex
Page 65 and 66: 4.3. Using the Create New Applicati
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Page 69 and 70: 4.4.2. Service As you can see in th
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Page 73 and 74: 4.4.9. Manipulating Objects A dynam
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Page 79 and 80: You will see logging of what has be
Page 81 and 82: the radio button “Specify Host Na
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Page 85 and 86: • config/defaultTemplateBindings.
Page 87 and 88: VTL uses references to embed dynami
Page 89 and 90: In addition to the XSD attributes,
Page 91 and 92: Note that it only makes sense to cr
Page 93 and 94: 4.8. Generating Mobile Applications
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Page 97 and 98: CHAPTER 5 Generating Page Layouts T
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managed bean Hashmap called createM
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Example In this example the Countri
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5.3.1. Hide Items in a Table The ge
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The example screenshot below shows
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5.3.6. Using Table Overflow Referen
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The above example shows the Employe
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When you choose a button for naviga
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5.5.1. Master-Detail on Separate Pa
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Note that the nested table could it
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So this is our database diagram: We
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Definition’ wizard. Anyway, you s
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8. By default, the tree is rendered
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Generating a tree for such a situat
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• Add a Query Where Clause to the
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• Regenerate. You should get this
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Warning: This issue (selecting a tr
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2. Create a new Dynamic Domain in t
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• An m:n relation exists between
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5.7.3. Understanding How JHeadstart
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5.8. Creating Wizard Layouts A wiza
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5.9. Changing the Overall Page Look
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After turning off the generation of
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5.9.3.2. Declaring the New Region T
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CHAPTER 6 Generating User Interface
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6.2. Default Display Value 6.2.1. U
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adio-vertical radio-horizontal edit
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6.4.2. Setting Maximum Length The n
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6.5.3. Dynamic dropdown list based
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6.7. Generating a List of Values (L
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In that case you must include all t
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3. Got to the newly created Locatio
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6.7.4. Use LOV for Validation 10. G
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the LINE_ITEM_ID of the ORDER_ITEMS
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When you have selected a row in the
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6.9. Generating a Checkbox You can
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6.10.1. Combining File Display Opti
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throw new JboException(e); } } retu
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6.11. Generating a Graph The values
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appearance of the graph changed to
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• Choose a value for the Clear/Re
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• In case of a table layout the d
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} } double convertedPercentage = ne
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As you can see, the buttons are inc
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6.13.4. Creating a Button that Call
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As you can see, the inputText and c
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6.14. Hyperlink to Navigate Context
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5. Insert inside the commandLink co
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6.15. Embedding Oracle Forms in JSF
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CHAPTER 7 Generating Query Behavior
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In the dropdown list, all the emplo
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6. Set the property Domain (on the
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Note that because of the value of t
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7.2.3. Using Advanced Search 7.2.4.
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• In the Departments View Object,
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Note the searchBinding managed prop
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7.3. Forcing a Requery 7.3.1. Imple
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CHAPTER 8 Generating Transactional
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8.1.3. Allowing the User to Insert
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8.3. Enabling Delete Example ‘Del
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8.5. Runtime Implementation of Tran
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8.5.4. Commit Handling The ‘Commi
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CHAPTER 9 Creating Menu Structures
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9.1.2. Preventing Generation of a M
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Another common scenario is to have
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9.2.2. Enabling Dynamic Menus You c
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• A SQL Script named DynamicMenuD
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For example, within the HRModule, l
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If you now restart the application,
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CHAPTER 10 Application Security A p
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10.1.2. JAAS Custom Login Module A
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10.1.4. Custom Security 10.1.5. ADF
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10.1.6. ADF BC Security • Regener
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You can right-mouse-click on the Jh
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10.3. Using JAAS-JAZN for Authentic
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Note that if you use the JDeveloper
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10.4.3. System-jazn-data.xml Note t
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10.4.5. Debugging the Custom Login
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10.5.3. Login Page and Login Bean 1
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10.6.2. When Access Denied Go To Ne
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Reference: See the Javadoc of the m
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10.7.2. Restricting Item Operations
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10.8.4. Changes to SQL Script Templ
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11.1. National Language Support in
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11.1.3. Adding a non-supported Loca
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11.2.2. Running the JHeadstart Appl
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11.2.3. Running the Application If
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11.3. Runtime Implementation of Nat
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11.4. Error Reporting The ADF SR De
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11.5. Outstanding Changes Warning W
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12.1. Creating the Database Tables
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12.2. Enabling Runtime Usage of Fle
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12.2.3. Generating the Flex Region
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12.3. Defining Flex Items At Runtim
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Setting up another Item Region and
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12.5. Internationalization and Flex
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After you saved your changes and cl
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13.1. Introduction into JHeadstart
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13.2. Roadmap When you plan to use
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You can use the Browse button to op
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form-specific. Therefore, the entit
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13.3.5. Processing the Selected For
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The last printed line in this windo
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13.4. Understanding the Outputs of
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To make sure the ADF Business Compo
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13.5. Handling Forms PL/SQL Logic 1
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This page is intentionally left bla
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14.1. JSF Lifecycle Phases 14.1.1.
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lifecycle sequence. When you set th
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Reference: For more information abo
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14.3. JHeadstart Page Lifecycle The
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