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Refresh Page in Oracle ADF by Java Code-IVEBcourses.com

Some times we need to refrsh whole page in Oracle ADF, then we can use this managed bean code to refresh whole page in ADF.

protected void refreshPage() {

FacesContext fctx = FacesContext.getCurrentInstance();

String refreshpage = fctx.getViewRoot().getViewId();

ViewHandler ViewH = fctx.getApplication().getViewHandler();

UIViewRoot UIV = ViewH.createView(fctx, refreshpage);

UIV.setViewId(refreshpage);

fctx.setViewRoot(UIV);

}

Partially refresh any UIComponent-

AdfFacesContext.getCurrentInstance().addPartialTarget(UIComponent);

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Mostly asked Oracle ADF interview questions-IVEBcourses.com

Q : What is Action Listener ?

Ans : An action listener is a class that wants to be notified when a command component

fires an action event. An action listener contains an action listener method that

processes the action event object passed to it by the command component

Q:What are business Component In ADF.Describe them?

Ans: All of these features can be summarized by saying that using ADF Business

Components for your J2EE business service layer makes your life a lot easier. The key

ADF Business Components components that cooperate to provide the business service

implementation are:

■ Entity Object

An entity object represents a row in a database table and simplifies modifying its

data by handling all DML operations for you. It can encapsulate business logic for

the row to ensure your business rules are consistently enforced. You associate an

entity object with others to reflect relationships in the underlying database schema

to create a layer of business domain objects to reuse in multiple applications.

■ Application Module

An application module is the transactional component that UI clients use to work

with application data. It defines an up datable data model and top-level

procedures and functions (called service methods) related to a logical unit of work

related to an end-user task.

■ View Object

A view object represents a SQL query and simplifies working with its results. You

use the full power of the familiar SQL language to join, project, filter, sort, and

aggregate data into exactly the “shape” required by the end-user task at hand. This

includes the ability to link a view object with others to create master/detail

hierarchies of any complexity. When end users modify data in the user interface,

your view objects collaborate with entity objects to consistently validate and save

the changes

Q: What is Top Link?

Ans:

Top Link is an Object-Relational Mapping layer that provides a map between the Java objects that

the model uses and the database that is the source of their data.

By default, a session is created named default. In the following steps, you create a new session

Q:What is Managed Bean?

Ans:JavaBean objects managed by a JSF implementation are called managed beans. A managed bean describes how a bean is created and managed. It has nothing to do with the bean’s functionality.

Managed bean is about how the bean is created and initialized. As you know, jsf uses the lazy initialization model. It means that the bean in the particular scope is created and initialized not at the moment when the scope is started, but on-demand, i.e. when the bean is first time required.

Q :What is Backing Bean?

Ans:Backing beans are JavaBeans components associated with UI components used in a page. Backing-bean management separates the definition of UI component objects from objects that perform application-specific processing and hold data.

Backing bean is about the role a particular managed bean plays. This is a role to be a server-side representation of the components located on the page. Usually, the backing beans have a request scope, but it is not a restriction.

The backing bean defines properties and handling-logics associated with the UI components used on the page. Each backing-bean property is bound to either a component instance or its value. A backing bean also defines a set of methods that perform functions for the component, such as validating the component’s data, handling events that the component fires and performing processing associated with navigation when the component activates.

What is view object?

Ans :A view object is a model object used specifically in the presentation tier. It contains the data that must display in the view layer and the logic to validate user input, handle events, and interact with the business-logic tier. The backing bean is the view object in a JSF-based application. Backing bean and view object are interchangeable terms

Q: Difference between Backing Bean and Managed Bean?

Backing Beans

Managed Beans

A backing bean is any bean that is referenced by a form.

A managed bean is a backing bean that has been registered with JSF (in faces-config.xml) and it automatically created (and optionally initialized) by JSF when it is needed.

The advantage of managed beans is that the JSF framework will automatically create these beans, optionally initialize them with parameters you specify in faces-config.xml,

Backing Beans should be defined only in the request scope

The managed beans that are created by JSF can be stored within the request, session, or application scopes

Q? What do you mean by Bean Scope?

Bean Scope typically holds beans and other objects that need to be available in the different components of a web application.

Q.  What are the different kinds of Bean Scopes in JSF?

JSF supports three Bean Scopes. viz.,

Request Scope: The request scope is short-lived. It starts when an HTTP request is submitted and ends when the response is sent back to the client.

Session Scope: The session scope persists from the time that a session is established until session termination.

Application Scope: The application scope persists for the entire duration of the web application. This scope is shared among all the requests and sessions.

What is the difference between JSP-EL and JSF-EL?

JSP-EL

JSF-EL

In JSP-EL the value expressions are delimited by ${…}.

In JSf-EL the value expressions are delimited by #{…}.

The ${…} delimiter denotes the immediate evaluation of the expressions, at the time that the application server processes the page.

The #{…} delimiter denotes deferred evaluation. With deferred evaluation ,the application server retains the expression and evaluates it whenever a value is needed.

Q:How to declare the page navigation (navigation rules) in faces-config.xml file in ADF 10g?

Ans: Navigation rules tells JSF implementation which page to send back to the browser after a form has been submitted. We can declare the page navigation as follows:

<naviagation-rule>

<from-view-id>/index.jsp</from-view-id>

<navigation-case>

<from-outcome>login</from-outcome>

<to-view-id>/welcome.jsp</to-view-id>

</navigation-case>

</naviagation-rule>

This declaration states that the login action navigates to /welcome.jsp, if it occurred inside /index.jsp.

Q: Setting the range of table

Ans : <af:table rows=”#{bindings.LoggedInUserServiceRequests.rangeSize}”…/>

Q : Which component in ADF BC manages transaction ? A : Application Module, manages transaction.

Q : Can an entity object be based on two Database Objects(tables/views) or two Webservices ? A : No entity objects will always have one to one relationship with a database object or web service.

Q : Where is that we write business rules/validations in ADF and why? A : We should ideally be writing validations at Entity Object level, because they provide highest degree of reuse.

Q:What are the JSF life-cycle phases?

Ans:The six phases of the JSF application lifecycle are as follows (note the event processing at each phase):

1. Restore view 2. Apply request values; process events 3. Process validations; process events 4. Update model values; process events 5. Invoke application; process events 6. Render response

Q. Explain briefly the life-cycle phases of JSF?

1. Restore View : A request comes through the FacesServlet controller. The controller examines the request and extracts the view ID, which is determined by the name of the JSP page. 2. Apply request values: The purpose of the apply request values phase is for each component to retrieve its current state. The components must first be retrieved or created from the FacesContext object, followed by their values. 3. Process validations: In this phase, each component will have its values validated against the application’s validation rules. 4. Update model values: In this phase JSF updates the actual values of the server-side model ,by updating the properties of your backing beans. 5. Invoke application: In this phase the JSF controller invokes the application to handle Form submissions. 6. Render response: In this phase JSF displays the view with all of its components in their current state.

Q: What is setActionListener?

Ans:SetActionListener – The setActionListener tag is a declarative way to allow an action source ( , , etc.) to set a value before navigation. It is perhaps most useful in conjunction with the “processScope” EL scope provided b ADF Faces, as it makes it possible to pass details from one page to another without writing any Java code. This tag can be used both with ADF Faces commands and JSF standard tags. Exmaple of this can be as follows. Suppose we have a table “employee”.We want to fetch the salary of an employee of some particular row and want to send this salary in Next page in process scope or request scope etc.So using this we can do this. It have two attributes : From – the source of the value; can be an EL expression or a constant value To – the target for the value; must be an EL expression

1

<af:setActionListener from="#{row.salary}"

2

to="#{processScope.salary1}"/>

This setActionListener will pick value of salary of that row and store this value into salary1 variable.So anyone can use this salary As processScope.salary1 . It is very simple to use. And very useful.

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CORE JAVA/J2EE online training by ivebcourses.com

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SAP interview TIPS by IVEBcourses.com

The following best 10 SAP interview tips would be handy for the candidates who are attending SAP interviews.

1. Update Your SAP CV Regularly

Always keep your SAP CV up to date in job portals regularly You will only get interview calls based on your updated SAP resume. Therefore, you must take highest care in creating your SAP CV for SAP interviews.

By reading or scanning your CV, the client should think about yourself as a prospective candidate for his requirements. If you are successful with this task, then half of the work is completed in interview preparation.

2. Be Honest and Sincere in SAP Interviews

In SAP Jobs 90% of the CVs in the market are either falsifying or fake. Be honest, be prepare well and be sincere to get your dream job in SAP.

3. Show Positive Attitude in Interviews

Show respect on your self in SAP interview to get succeed. Self respect with your positive attitude and willingness to learn / share will be the key factor an the best quality in SAP interviews that the SAP companies and employers are looking for.

4. Be punctual on SAP Interview Day

You are going to SAP Interview, but not for function or party. Try to be at the interview venue at least 10 to 15 minutes before the interview schedule.Not only just punctual, some of the SAP companies or employer even could ask you to get some related documents, if so, please be prepared with that all documents, you have collected them to produce before interview panel. You cannot afford to miss the employer's organisational policies.

5. Refresh Your Previous Knowledge and Weak areas in SAP

Interviews are stepping stones for the success, don't disappoint if you fail in first interview. Not every consultant in this world is successful in their first SAP interview. Particularly, the competition is very high and the expectation from the employers are also at high magnitude for the SAP job requirements.

So do not much bother much even if you fail in an SAP interview. After completion of interview, please note down the areas you are failed to answer and polish those areas for the next interviews. The more number of interviews that you are giving, the confidence would be definitely boosted up, be positive and give best in next SAP interview.

6. Know the Skills and Requirements Needed for Applied SAP Job

As we discussed, the expectations of each SAP job interview is different from each other. We may not be knowing exactly but we can easily guess the expectations of the employer for the required SAP job position.

You cannot use the same approach and preparation plan for all the SAP interviews. We may have to use different interview preparation approaches and strategies in order to be successful in SAP interviews. Particularly, if you are going to interviews with Top 4 Consulting firms they would expect you to have more excellent communication and advisory skills.

7. Be with Self Confidence in SAP Interviews

Be with self confidence at the time of interviews. Self confidence is the key for your SAP job interview success. When we are really new to this SAP interview process, we would be much tensed up with the kind of SAP questions that interviewer may ask us in interviews. There is no use of being panic before SAP interview. This thing would only push us towards the wrong side of the coin. Be with self confident and be prepared for interview. Be confident and be positive in all your SAP interviews.

8. Give Best SAP Business Examples to Impress Interviewer

When we are going to SAP interview, not just to explain what the configuration screen is. We need to explain the SAP system / configuration with business process examples in SAP to impress the interviewer.

This explanation give us good amount of confidence in facing SAP interview and the interviewer will be surely impressed with our explanation.

In SAP Technical Interview in India, then they would expect SAP consultant to remember the screens and transaction codes. In this case we would have very less chance to bluff with them in SAP interviews.

In Western countries, they conducting SAP Technical Interviews on process driven pattern. If you are conceptually good about the business processes, then they would not put much pressure about the screens and transaction codes.

9. Keep Concentrate on Communication Skills

In SAP interviews, communication is the most successful element of your whole interview process. We would say it is 90% deciding factor whether to get success or failure in your any SAP interview. There are number of consultants with very limited technical knowledge, still managing the get through the interview only with communication skills. Once they selected, they are some how managing the show by pinching the other people.

We should ensure ourselves to have a good amount of communication skills. In any case if we are failing in this area, our first importance would be having good amount of communication skills. If we have good amount of communication skills and reasonable amount of technical knowledge, it would help us to crack the SAP interview.

If you have good amount of technical skills and conceptual knowledge on possible areas in SAP, but if you fail to communicate them in interview, then definitely, it would be a drawback for us. So, never underestimate the importance of the communication skills in any SAP interview.

10. Explore and Present Yourself well before Interviewers

Explore and present yourself well before interviewers to show your strengths. The most important thing is how you present yourself, your appearance, your dressing, your body language, your sense of humor and your communication.

All these would really matter in SAP interviews. Because, as a SAP consultant, you would be expected to visit number of client places. So your employer would expect such presentation skills from the day of interview from you. These small things can play a important role in taking the decision of your selection process for a required SAP position.

Please keep all these 10 Best SAP Interview Tips for Freshers and Experienced in mind, be prepare well in technical perspective and functional perspective, be always with self confidence and self believe, be honest and sincere to get succeed in SAP interviews

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Oracle ADF online course content

COURSE CONTENT

·         Introduction to Oracle 11g ADF o What is Oracle ADF?  o MVC architecture o Benefits of ADF    o ADF architecture o ADF Faces  o  JDeveloper tools  ·         Developing ADF applications  o    Applications and projects  o    Database connections  o    Overview of Business components  o    Steps to create business components  o    Business Components diagram  o    Application flow overview  ·         Entity Objects  o    What is an entity object?  o    Entity object class diagram  o    Creating entity objects  o    Customizing attribute properties  o    Entity associations  o    Entity object definition file  o    Database synchronization, moving, and renaming  o    Entity diagrams  ·         View objects  o    What is a view object?  o    View object class diagram o  Steps to create a view object o  Bind variables o    Creating view criteria o  Adding view object instance to application module o  Testing view objects o    Read-only master-detail tables o    Master-detail-detail  o    Inline detail tables  ·           Application Modules  o    What is a view object?  o    View object class diagram o    Designing Application Module  o    Creating Application Module  o    Application Module Editor  o    Testing Service Methods  ·         Transactions, validation and conversion  o    Built-in conversion  o    Custom converters o  Entity object validation o  Creating validation rules o  Error messages o    ADF Faces validation <br "page-break-before:always;="" mso-break-type:section-break"="">  ·         Understanding ADF Data bindings  o    ADF Data Model and Bindings o    Exposing Business Components as Data Controls  o    JSF Expression Language  o    Binding Components to Data  ·         ADF Rich Faces  o    List of Values  o    Dependent Drop Down Lists  o    Radio Buttons and checkboxes  ·         ADF Tables  o    ADF table overview  o    Table selection and sorting o    Result set scrolling and navigation  o    Table and Column attributes  o    Editing records  o    Table bindings  o    Deleting records  ·         Handling forms  o    Control flow rules  o Common input components o Managed beans and scopes  o Drop-down menus o Multiple select components  o Search concepts o  Query-by-example o  Search forms and bind variables  ·         Transient Attributes and Groovy Expressions  ·         Task Flow Concepts  o    Bounded vs. unbounded task flows  o    ADF controller activities  o    managed beans and scoping  o    state tracking  o    save points  o    exception handling  ·         Working with Task Flows  o    Passing values between pages  o    Using bounded child task flows  o    Transaction handling  o    Bounded task flows in dialogs and popups  ·         ADF Regions and Bounded Task Flows  o    Using page fragments  o    Using ADF regions  o  �� Dynamic regions  o    Passing Parameters  o    Managing contextual events  o    Communicating with ADF Regions  ·         ADF Navigation  o    Process train  o    Partial page navigation o    Navigating programmatically  ·         Security  o    Container-managed security  o    ADF security overview  o    Enabling security  o    Creating users, groups, and roles  o    Page and task flow permissions  o    Security Expression Language  o    Securing entity objects  o    Row-level security  o    Logging in and out  ·         Customizing ADF Programmatically  o    Custom Java classes - EO and VO  o    Custom validation methods - EO  o    Calculated attributes - EO and VO  o    Finding, creating, removing, and modifying EOs and VOs  ·         Web services  o    What is a web service?  o    SOAP, WSDL, UDDI o    Web service data control  o    Securing a web service  o    Consuming a web service - JSP  o    Web service proxy  o    Multi Language  ·         ADF Troubleshooting  o    Business Components Browser  o    Expression language builder  o    Java logging  o    Breakpoints o    Breakpoint groups o    Debugging configuration  o    The Stack  ·         File Upload / Download  ·         Internationalize ADF Application  ·         ADF Page Life Cycle  ·         Deployment  o    Deployment steps  o    WebLogic admin basics o    Deploying an application with JDeveloper o    Testing your application  ·         Integration with Oracle E-Business Suite  ·         Calling Pl/Sql APIs  ·         Conclusion 

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Register for your demo, know your trainer, get in to the ivebcourses family, be an expert. We have expert trainers in Core JAVA /J2EE,oracle -APPS/ADF/OAF, SAP ABAP/SD/FI-CO/

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And  today IVEB wants to prove its mettle in information technology. With higly experienced trainers and high quality learning tools.  Iveb proved its mettle in conducting on-line tests on user demands and it want to share that same experience with the techies which would be help full for there interviews and certification courses.

ON-LINE  Courses we offer

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Keeping future in our mind we are also being 1st in online section to train on layer7 and B.P.M. in which they are going great guns in i.t. field .

We start from basics we have experts in teaching C,C++ and java,Core java ,J2ee. The best ever you can get a trainer like we have is impossible. He is experienced and talented too.

The trainer who trains for testing tools , manual testing and QTP & QC have excellent experience and he believes in hardwork.

SAP ABAP on-line training  is trained by 8 years experienced Infosys techie who loves to teach .

Sap fi-co on-line training is trained by 7 years experienced polaris employee who gives his best for his trainees.

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Oracle apps on-line training will be trained by employee from i.t. convergence whose extensive knowledge in it will amaze you for sure. Btw he has experience of 7 years.

Oracle ADF on-line training will be trained by young gun who has an experience of 4 years but the knowledge he has in ADF will strike you.

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Data stage on-line training  trainer works in tcs she actually experienced 4 years .

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This trainer is experienced 5 years in informatica ONLINE TRAINING he works for t.c.s

Layer 7 on-line training and b.pm on-line training are very new and we have young guys for it who are working on real time projects.

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Online trainers specialized in JAVA and oracle APPS/ADF/OAF

IVEBcourses.com is fabricated by IVEB health and education which is a leader in mci screening test and fmgs  test. It has been training 1000 medicos every year for  fmgs and mci screening test through fmgsindia.com.

And  today IVEB wants to prove its mettle in information technology. With higly experienced trainers and high quality learning tools.  Iveb proved

its mettle in conducting on-line tests on user demands and it want to share that same experience with the techies which would be help full for there interviews and certification courses.

ON-LINE  Courses we offer

1.C,C++  2.Java  3.Core java 4.J2EE 5.TESTING TOOLS  6.MANUAL TESTING  7.QTP &QC   8.SAP ABAP  9.SAP FI-CO   10.SAP BI  11.SAP BO  12. ORACLE APPS  13.ORACLE ADF  14.ORACLE OAF  15.PEOPLESOFT TECHNICAL   16.SALESFORCE  17.LAYER7  18.B.P.M  19. DATASTAGE  20.COGNOS  21.INFORMATICA

Keeping future in our mind we are also being 1st in online section to train on layer7 and B.P.M. in which they are going great guns in i.t. field .

We start from basics we have experts in teaching C,C++ and java,Core java ,J2ee. The best ever you can get a trainer like we have is impossible. He is experienced and talented too.

The trainer who trains for testing tools , manual testing and QTP & QC have excellent experience and he believes in hardwork.

SAP ABAP on-line training  is trained by 8 years experienced Infosys techie who loves to teach .

Sap fi-co on-line training is trained by 7 years experienced polaris employee who gives his best for his trainees.

Sap bi and bo on-line training is trained by delloitte employee who has experience of 5 years he has experience of 7  development projects in his 5years span.

Oracle apps on-line training will be trained by employee from i.t. convergence whose extensive knowledge in it will amaze you for sure. Btw he has experience of 7 years.

Oracle ADF on-line training will be trained by young gun who has an experience of 4 years but the knowledge he has in ADF will strike you.

Oracle OAF on-line training is trained by wipro employee who has an experience of 6years train with him the best you can get.

Peoplesoft technical on-line training will be trained by former teacher now a techie experienced 7 years in peoplesoft. He knows do’s and dont’d of peoplesoft.

Salesforce on-line training will be trained by 3years experienced ibm employee . actually he loves salesforce and he will make you fall in love with it.

Data stage on-line training  trainer works in tcs she actually experienced 4 years .

Cognos on-line training will be trained by 6 years experienced Infosys techie.

This trainer is experienced 5 years in informatica ONLINE TRAINING he works for t.c.s

Layer 7 on-line training and b.pm on-line training are very new and we have young guys for it who are working on real time projects.

Thank you.