Oracle Application Development Framework 12c Essentials

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Oracle Application Development Framework 12c Essentials

You access a page in your ADF application that refers to bindings calling

An application module is automatically instantiated for each user session and allocated to that user for the life of their session. ✘ The programmer must instantiate an application module in a JSF managed bean and carry the application module for the life of the user session. ✘ One application module bean is instantiated and shared by all user sessions. ✘ An application module instance is checked out of the application module pool and given to the user session for at least that request, or longer depending on thesystem load. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

Which statement describes the Oracle implementation of model-view-controller (MVC)? (Choose the best answer.)

Oracle ADF provides a "pure" implementation of MVC, with the model layer handling page navigation and encapsulating business logic. ✘ ADF Controller provides support for application tasks such as validation, state management, security, and business process orchestration. ✘ ADF bindings provide a layer of abstraction on top of the business services to enable the view and controller layers to work with different implementations ofbusiness services. ✘ JSF Controller is the best choice for ADF Faces-based web applications because it enables you to break up an application's page flow into re-usable flows. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

Your database has a strict security requirement that whenever users select from any table in the database schema, they must append the select statement with an additional where predicate that returns only records WHERE owner = :pUserName. This restricts users to seeing only records that they own. When you design and develop the ADF Business Components in your ADF application, there will be more than 100 view objects that select against this database. You want to build a solution that not only ensures all your developers, when writing view objects, meet the database's strict security requirement, but takes the least amount of development effort for your entire team and is easy to maintain in the long term. Identify the correct solution. (Choose the best answer.)

Define a view criteria on each view object at design time to apply the predicate to the corresponding view object, ensuring the view criteria is defined against the view object instance in the Application Module Editor. ✘ Override each view object's ViewObjectImpl class methods to programmatically modify each view object's where clause at run time to add the predicate tothe select clause regardless of the query executed. ✘ Create a complete set of custom ADF Business Component framework classes for your business components and then override your customViewObjectImpl class to programmatically modify each view object's where clause at run time to append the predicate. ✘ In each view object, simply type the predicate into the WHERE clause of the View Object Editor query page. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

You have three application modules: A, B, and C. Application modules

No view objects are committed. ✘ Only changes to view objects exposed through application module ✘ Only changes to view objects exposed through application modules A and ✘ All changes to all view objects exposed through all application modules A, B, and C are committed. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

You have written a Groovy validation expression for the Employees entity object. How would you customize the error message to show the value of the LastName attribute as all uppercase? (Choose the best answer.)

Add a token to the validation error message and define the token value as LastName.toUpperCase(). ✘ Add a token to the validation error message and define the token value as adf.object.hints.toUpperCase. ✘ Add a token to the validation error message and define the token value as adf.object.hints.value.toUpperCase. ✘ Manually change the error string in the ModelBundle.properties file to be uppercase. ✔ Insert adf.error.raise ("< your error message>" + LastName.toUpperCase()) into the validation code as part of the failure processing. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

You create a view object "CustomersVO" based on an entity object "CustomerEO". How would you declaratively change the result set returned from the view object so that the records are sorted by customer name? (Choose the best answer.)

Add ORDER BY CustomerName to the query in CustomersVO. ✘ Add ORDER BY CustomerName to the query in CustomerEO. ✘ Change the CustomersVO query mode to "Expert" and define the query using the ORDER BY clause as required. ✘ Re-order the attributes in the CustomersVO editor such that the CustomerName attribute is listed first. ✔ Create a view criteria on CustomersVO to order by the CustomerName attribute. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

Which code sample is the recommended way to override the create() method in EmployeesImpl, an implementation of oracle.jbo.server.EntityImpl for the Employee's entity object, to set default salary? (Choose the best answer.)

protected void create(AttributeList attributeList) { SetAttributeInternal (SALARY, 0); super.create(attributeList); }

✘

protected void create(AttributeList attributeList) {super.create(attributeList);
setAttributeInternal("SALARY", 0);
}

✘

protected void create(AttributeList attributeList) {super.create(attributeList);
setSalary(0);
}

✘

protected void create(AttributeList attributeList) {setSalary(0);
}

✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

Which statement is true about an ADF Business Components list of values? (Choose the best answer.)

It is always shown as a drop-down box in the user interface. ✘ It can be derived only from a non-updatable view object. ✘ It can show only one attribute in the selection list. ✘ It cannot have a blank item as an option. ✔ It can be represented as a radio group on an ADF Faces page. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

Your organization has specified that menu components should be located on the left-hand side of a page and that the main content should be displayed in the center. How do you ensure that developers adhere to this standard? (Choose the best answer.)

Ask all developers to use the two-column quick start layout. ✘ Create a page template that defines the specified layout and distribute it to developers. ✘ Create an ADF library that contains a collection of ADF Faces components that developers must use. ✘ Create a task flow template that defines the specified layout; this will enforce the correct layout on all pages that are built from the template. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

10.

Identify two characteristics of model-view-controller architecture.

The separation of user interface components from the underlying application and business logic makes the code more flexible and easier to maintain. The view layer represents the data values bound to the current page. When a user interacts with the view, the controller handles page navigation. The view reads data from the controller to render the appropriate user interface.

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

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Oracle Application Development Framework 12c Essentials

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