PeopleCode Interview Question & Answers

1. Define PeopleCode?                                                                                                              PeopleCode is an object oriented proprietary (case-insensitive) language used to express business logic for PeopleSoft applications.

2. Where can you write the PeopleCode?                                                                                                     1. Record field level                                                                                                                                          2. Page people code                                                                                                                                  3. Component level people code                                                                                                          4. Component record people code                                                                                                      5. Component record field people code                                                                                             6. Menu item people code                                                                                                                   7. Application engine people code                                                                                                            8. Component interface people code                                                                                                                     9. Messaging people code                                                                                                                            10. Application package people code

3. Where people codes get stored?                                                                                                                 Database server (PSPCMPROG) table                                                                                          objectvalue1 – table name          objectvalue2 – field name          objectvalue3 – event name 

4. Order of people code events firing?

1.  Searchinit 

2.  Searchsave

3.  Rowselect

4.  Prebuild

5.  Field Default

6.  Field Formula

7.  RowInit

8.  PostBuild

9.  Activate

10. FieldEdit

11. FieldChange     (PrePopup, ItemSelected)

12. RowInsert

13. RowDelete

14. SaveEdit

15. SavePreChange.

16. WorkFlow

17. SavePostChnage.

5. When workflow even fires?                                                                                                                        After the save pre change work flow event get fired.

6. What are the types of data types are available in PC? Give me some ex for each? Two types                           1. Conventional data type (Any, Boolean, float, integer, object, string, time, date, number) 2.Object data type (record, rowset)

7. What are the comments available in PC?                                                                                             REM can be used to comment a single line, but it will be processed by the component processor

Single and multiple lines commenting:

/* PeopleCode Statements

------ ------ ------ ----

*/

Nested Comments:

<*

/* PC Statements..... ..... ..... */

/* ...... Some info on code ...... */

/* More comments */

*>

8. Variable types available in PC?     Two types of variables                                                                          1) user defined variable prefixed with ‘&’   2) system defined variable prefixed with ‘%’

9. What is the component processor?                                                                                                 Component processor is a runtime engine that controls processing of an application from the time user request the component from the menu till the database is updated and processing of component is completed.

10. Explain about the component buffer and data buffer?                                                                           In short Component Buffer contains all the Data of active component. The data buffer is used to store data added from sources other than the component, such as from a PeopleSoft Application Engine program, an application message, and so on.        PeopleTools 8 provides an alternative to the scroll level, row, and field components in the form of the data buffer classes Rowset, Row, Record, and Field, which you reference using dot notation with object methods and properties.

11. Difference between SQLExec and CreateSql?                                                                                        SQLExec can only select a single row of data. If your SQL statement retrieves more than one row of data SQLExec sends only the first row to its output variables. Any subsequent rows are discarded.         If you need to SELECT multiple rows of data use the CreateSQL or GetSQL functions and the Fetch SQL class method.

12. What is the getsql function in PC?                                                                                               Use the GetSQL function to instantiate a SQL object and associates it with the SQL definition specified by sqlname. The SQL definition must already exist, either created using PeopleSoft Application Designer or the StoreSQL function. Processing of the SQL definition is the same as for a SQL statement created by the CreateSQL function.            Syntax: GetSQL (SQL.sqlname [, paramlist]);

13. Transfer () with syntax?                                                                                                                Use the Transfer function to close the current page and transfers the end-user to another page, either within the current component or in another component. Transfer can either start a new instance of the application and transfer to the new page there, or close the old page and transfer to the new one in the same instance of PeopleTools                                                                                                                                                                                Transfer(new_instance, MENUNAME.menuname,BARNAME.barname, ITEMNAME.menu_itemname, PAGE.component_item_name,action [, keylist] [,AutoSearch]);

Example:
Transfer (false, MenuName."CREATE_PROJECTS", BarName."USE",
ItemName."PROJECT_SUMMARY", Page."PC_PROJSUMMARY_PNL", "U", BUSINESS_UNIT, PROJECT_ID);

14. Transferpage () with syntax ?                                                                                                                   Use the TransferPage function to transfer control to the page indicated by PAGE. page__namename within, or to the page set with the SetNextPage function. The page that you transfer to must be in the current component or menu.      TransferPage([PAGE.page_name_name])

15. Explain about ACTIVE event?                                                                                                    The Activate event get fired each page gets activated. Active PeopleCode can only be associated with pages. The event is used for security validations such as field enabling and hiding a scroll, enabling user to programmatically control the display of that page controls. This event is used for component build processing in add mode and update mode.

16. Define about Funclib()                                                                                                                 FUNCLIB is a reusable function stored in derived/work record field event. So, first create a new record and set the record type to Derived/Work. FUNCLIB records do not hold data, so they do not need to exist at the database

Level. Add the field ATTACHADD to this record and save the record as APT_ATTACH_FUNC. PeopleSoft recommends placing FUNCLIB PeopleCode in the FieldFormula event.

                                                                                                                                                                     17. What is deferred processing?                                                                                                               Deferred processing is used speed up the data-entry process.  This means that the system does not validate the data for each field as you Tab through a page.  You can enter in all the data for your page without unnecessary trips to the server for data validation. Entered data is validated when:

• You navigate to another page in the component 
• Click the Save button 
• Click the Refresh button (access key: Alt+0) 

If there are any errors in your data, you are notified at this time.
 Field Edit event will not fire until we press the SAVE button if the deferred processing is ON.

You can select Deferred Processing mode at the following levels:

• Page control 
• Grid
• Page (include subpage and secondary page) 
• Component levels

18. What is a rowset?                                                                                                                          A rowset object, instantiated from a Rowset class, is a collection of rows associated with buffer data. A component scroll is a rowset. You can also have a level zero rowset.    the following two lines of code are equivalent:

Want to get field value into people code which is at level 2.                                                                GetLevel0 ()(1).GetRowset(Scroll.level 1recordname).GetRow(CurrentRowNumber()).record.fieldname

The default method for the Rowset class is GetRow. This means you can specify just a row number, and not use the GetRow method. For example, the following two lines of code are equivalent           &MyRow = GetRowset()(5);     or      &MyRow = GetRowset().GetRow(5)

19. Order of events PC events firing in deferred processing?                                                            SaveEdit àSavePreChange àworkflow àSavePostChange                                                                               this is similar to Interactive Processing where as in this Field Change, Field Edit Peoplecode events & System edits will be differed until we press the Save Button.

20. Difference between saveprechange and savepostchange?                                                           In Save Prechange we can get the data from Component Buffer for that particular Component where as in SavePost change Component Buffer is cleared we have to get data from Database and this is used to update values outside the database.

21. Difference between saveedit and fieldedit?                                                                                  Fieldedit event is fired every time for each row when field is edited where as saveedit is fired only once when a user click on save button 

22. Expalin about fieldformula?                                                                                                          The FieldFormula event is not currently used. Because FieldFormula PeopleCode initiates in many different contexts and triggers PeopleCode on every field on every row in the component buffer, it can seriously degrade application performance. Use RowInit and FieldChange events rather than FieldFormula.

If a field value is changed, whether through PeopleCode or by a user, the IsChanged property for the row is usually set to True. However, if a value is set in FieldDefault or FieldFormula, the row is not marked as changed. At save time, all newly inserted and changed rows are written to the database. All newly inserted but not changed rows are not written to the database.

As a matter of convention, FieldFormula is now often used in FUNCLIB_ (function library) record definitions to store shared functions. However, you can store shared functions in any PeopleCode event. FieldFormula PeopleCode is only associated with record fields.

23. Difference between prebuild and postbuild?                                                                               : PreBuild fires before any PeopleCode events on all the rows and fields in the component such as FieldDefault and RowInit. During the PreBuild event there will not be any data in the component buffer structure other than search record as its executing prior to the component build process. That’s why it is called PreBuild.

During the PostBuild event you will have access to the data read from the database into the component buffer structure. That’s why it is called PostBuild.

24. Difference between winmessage and msgget functions?                                                                   a)The MsgGet function retrieves a message from the PeopleCode Message Catalog, substitutes in the values of the parameters into the text message and is stored in database, where as WinMessage doesn’t store in database.

b) MsgGet function message number is mandatory parameter, but there is no such parameter in WinMessage.

25. Explain use of gray and ungray fun?                                                                                                        Use the Gray function user to make field unavailable for entry a page. Preventing the user from making changes to the field .Gray make a field display-only, while hide makes it invisible.

Syntax: Gray (fieldname)

Use the Ungray function to make a gray (non-editable) page field editable .If the field was grayed with call to the Gray function. If the page field is made display-only in page the field properties dialog, then Ungray has no effect. 

Syntax: UnGray (fieldname)

26. Purpose of all and none functions?                                                                                                           Use the all function to verify a field contain value, or if all the fields in a list of fields contain values. If any of the fields are NULL, then all return false. A blank character field or zero numeric value in a required numeric field is considered a null value.          Syntax: ALL (fieldname)

None function to checks that a field or lists of fields have no value.

27. What are the PC function use to control the translate values dynamically?                                             a) AddDropDownItem: The AddDropDownItem method adds an item to the dropdown list in the control for the field. The first time this method is called, it overrides the prompt table or translate table used to populate the list. Those items no longer appear in the list. Only the items added using this method display. Subsequent calls to this method add additional items to the dropdown list. The items added with the first call to the method also display. If there is an existing value and the dropdown list is changed with these functions, the selection shows as (Invalid value) unless the new list contains an entry with the same code as the existing value.      Syntax: AddDropDownItem (CodeString, DescriptionString).

b) ClearDropDownItem: The ClearDropDownList method clears all items added to the dropdown list using the AddDropDownItem method. In addition, this method causes the prompt table or translates table values defined for the list to come back into effect again (unless they’re subsequently overridden again with AddDropDownItem).

Syntax: ClearDropDownList ().

28. What are the foundations classes which are useful to access component buffer?                                          Rowset, row, record and field.

29. Syantax to declare a variables in PC?                                                                                                       Local variable-type    & varname;

30. Define standalone rowset?                                                                                                                       In PeopleCode standalone rowset is an independent rowset object not associated with component buffer. They allow you to work data with outside of the data whatever additional data you need from the database. In this sense they replace the functionality of the derived records which were once used as place holders to store data not directly associated with the component. Because a standalone rowset is standalone, there is no automatic action by the component processor on it. This means that if a standalone rowset is used to manipulate data (insert/update), code will need to be added to manually save changes.

31. Difference between getrowset and createrowset?                                                                                          GetRowset is used to get rowset for a record in the component buffer.

     CreateRowset is used to create rowset for a record which is in database, and is also called as standalone rowset.

32. Use of scrollflush()  : Used to remove all rows inside target scroll area and frees it associated buffer. Rows that are flushed are not deleted from the database. This function is often used to clear work scroll before a call to ScrollSelect.

Syntax: ScrollFlush (scrollpath)

33. Explain about the workflow event?                                                                                              WorkFlow PeopleCode executes immediately after SavePreChange and before database update that precedes SavePostChange. The main purpose of the workflow event is to segregate PeopleCode related to workflow from the rest of applications PeopleCode. Only PeopleCode related workflow (Such as triggerbusinessevent) should be in workflow programs. Your program should be deal with workflow only after my SavePreChange process completed.

34. Explain about thinhtime and thicktime function?                                                                                          Think-time functions suspended processing until the user has taken some actions (such by clicking button in message box), or until external function has run to completion (for example a remote process).

Think-time function hold avoids the following events: SavePreChange, Workflow, RowSelect, SavePostChange.

35. In which PC events dosave function is useful? FieldEdit, FieldChange, or ItemSelected.

36. Callappengine () explain with syntax?                                                                                                      The CallAppEngine function should only be used in events that allow database updates because generally, If your are calling PeopleSoft application engine. You’re intending to perform database updates. This includes following events:  SavePreChange, SavePostChange, Workflow, Message Subscription, and FieldChange.

CallAppEngine Cannot use in Application engine PeopleCode actions. If you need to access one application engine program from another application engine program, use the CallSection action

37. What is the difference b/n err msgget and war msgget?                                                                          Error stop the process, warning allow processing to continue. An error in FieldEdit prevents the system from accepting the new value of a field. A warning enables the component processor to accept the new data.

An error in SaveEdit prevents the system from saving any row of data. A warning in SaveEdit also is applied to all data in the page or component, but the component processor will accept the data

38. Expalin about remote call feature in PC?                                                                                     RemoteCall is a PeopleTools feature that enables executing COBOL program remotely from within a PeopleSoft application. RemoteCall is made using the RemoteCall PeopleCode function.

39. Some PC file attachment functions?                                                                                                      a) AddAttachment

Syntax: AddAttachment (URLDestination, DirAndFileName, FileType, UserFile [, MaxSize [, PreserveCase [, UploadPageTitle [, AllowLargeChunks]]]])

Use the AddAttachment function to upload a file from an end-user machine to a specified storage destination. Note that it is the responsibility of the calling PeopleCode program to store the returned file name for further use.

 b) DeleteAttachment

Syntax: DeleteAttachment (URLDestination, DirAndFileName [, PreserveCase])

Use the DeleteAttachment function to delete a file from the specified storage location.

DeleteAttachment does not generate any type of "Are you sure" message. If you want the user to verify the deletion before it is performed, you must write your own checking code in your application

c) DetachAttachment

Syntax: DetachAttachment (URLSource, DirAndFileName, UserFile [, PreserveCase])

Use the DetachAttachment function to enable a user to make a copy of an attached file on their local client system. The file is sent to the browser with appropriate HTTP headers to cause the browser to display a save dialog box to the user. The user can save the copy of the file with any filename.

d) ViewAttachment.

Syntax:  ViewAttachment (URLSource, DirAndFileName, UserFile [, NewWindow [, PreserveCase]])

Use the ViewAttachment function to enable an end-user to view a file on a system.

The copy of the file to be viewed may have a different name than the file at the storage location.

40. Define PC editor?             Any method of accessing PeopleCode programs displays a window where PeopleCode programs can be input or modified. This window is the PeopleCode editor. The PC editor enables you to edit and navigate all pc programs that belong to the same parent definition.

On the left side of the window is a drop-down list box showing the current field and other available fields, records, and components. Any field with PeopleCode attached is listed in bold. The right side of the window has a drop-down list box listing the current PeopleCode event and other acceptable events for that definition. Events already containing PeopleCode for that definition are listed in bold.

41 Difference between meta sql and normal sql?                                                                                           SQL Statements are Platform Dependent, where as MetaSQL statements are Platform Independent.

MetaSQL: - %Bind, %Execute Edits, %Select, %SelectInit, %Sql, %Table, %Truncate Table.

SQL: The SQL statements are used to fetch/retrieve, update, insert, delete data from the database. In PeopleSoft we use the SQL statements using SQLExec or CreateSQL. Different SQL statements are: Select, Insert, Update, Create and Delete.

MetaSQL: Different RDBMS have different date and time formats. Though the component processor takes care of the automatic conversion but at the time of using the SQLExec the automatic conversion does not take place. So in order to understand this, MetaSQL concept has come. Which we can use in diff SQL stmts. for example %datetimein, %date, %time, %currentdatetime,  %datetimeout etc.

%dateIn: This is used in the where clause of "Select and update"

%dateout: This is used while selecting the data.

42. Which PeopleTool is used to input peoplecode? - Application Designer.

43. When is PeopleCode case sensitive?   PeopleCode is only case sensitive within a quoted literal.

44.  In which PeopleCode would you code errors and warnings?                                                                             SearchSave, FieldEdit, SaveEdit and RowDelete primarily. You may also code errors and warnings in RowSelect.

45. What is the biggest drawback to Fieldformula?             Since FieldFormula is performed every time the panel is displayed on every row of data, its biggest drawback is the performance overhead it adds.

46. What other PeopleCode event might you expect to find with RowInit?                                     FieldChange. Since RowInit initializes the data before it is displayed, usually it is used along with FieldChange to accommodate any of the changes that are performed by the operator once the panel is displayed.

47. How does SavePostChg differ from all other Peoplecode events?                                              SavePostChg is different from all other Peoplecode events since it is performed after the updates are made on the database.

48. What happens if you don't declare a variable?                                                                                         If a variable is not declared PeopleCode will assume it is a local variable.

49. Why are application specific people-code functions used?                                                          PeopleCode functions are used to perform the same logic in multiple programs while only having to maintain it in one place.

50. How is a PeopleCode function called?          A PeopleCode function is called by referencing the function name and then passing the function the appropriate number of parameters in parentheses.

51. How a PeopleCode function be defined so that it can be used as a variable in the calling program?    In order for a PeopleCode function to be used as a variable, it must be defined using a "Returns" in the Function statement. Also, at least one "Return" statement must be used in the function code.

52. Why is the Message Catalog used?                                                                                                          The Message Catalog is used to store the text of error and warning messages that will be used in PeopleSoft applications. This allows the same message to be used in more than one PeopleCode program while only maintaining it in one place. It also prevents the text of messages from being hard-coded into Peoplecode programs.

53. How is a message added to the Message Catalog?                                                                                  To add a new message to the Message Catalog, the correct message set should first be retrieved. A new message can be added to the set by performing a row insert (F7). The new message number will automatically be assigned.

54. Which message sets does PeopleSoft reserve as its own?                                                                        Message sets 1 through 19,999 are reserved for use by PeopleSoft applications. Message sets 20,000 through 29,000 can be used by PS users.

55. How is a message retrieved from the Message Catalog in PeopleCode?                                                 To retrieve a message from the Message catalog in PeopleCode, the MsgGet built in function is used. The required parameters of the function are message set, number and a default message.

56. When should WinMessage be used?                                                                                                        The WinMessage built-in function is used to display an information message to the operator without performing normal error and warning processing. It also can be very helpful when used for debugging.

57. When would FieldChanged, RecordChanged, RecordDeleted, RecordNew, and PanelGroupChanged be used?                                                                                                                                                                        These built-in functions can be used in SaveEdit, SavePreChg, or SavePostChg programs to filter down the processing to occur only when necessary.

58.  Why is PriorValue used?                                                                                                                                     The PriorValue built-in function is used to determine the value of a field before it was changed.

59. What is the CurrentRowNumber?                                                                                                                        It is the number of the row of data the application processor is performing PeopleCode on in the buffers on the client workstation.

60. How does AddToDate work?                                                                                                                  This function is passed a date field and then the number of years, months and days to add. Leap years are automatically taken into consideration, and negative numbers may be passed as parameters to subtract from the date.

61. Which two cross reference reports are best for PeopleCode? How do they present their data?  XRFFLPC reports for one field all of the PeopleCode programs where it is referenced. XRFPCFL does the opposite. It reports for one PeopleCode program all of the fields it uses.

62. What does Find in PeopleCode do?                                                                                                         The Find in PeopleCode utility will scan through all of the PeopleCode on a database looking for a specific character - string.

63. When is it useful to select the Export to File option in Find in PeopleCode?                                          An Export report produces an unformatted copy of all of the source code where the character string was found. This can be very helpful in an upgrade.

64. How can you use WinMessage as part of the debugging process?                                                          A WinMessage can be used to set break points and display the current value of fields and variables in the PeopleCode debugging process.

65. How do you turn on the PeopleCode trace?

·                     The PeopleCode trace can be turned on by selecting the Set push button on the PeopleCode Trace Control panel.

·                     It can also be turned on by saving options in the Configuration manager, logging out of Psoft and logging back on.

·                     It can also be turned on within PeopleCode by using the SetTracePC built-in function.

66. What is the name of the file created by the trace? DBGI.TMP which is stored in TEMP directory.

67. How do you turn off the PeopleCode trace?                                                                                           The PeopleCode trace can be stopped by turning off all of the check boxes on the PeopleCode trace control panel and selecting the set push button.                                                                                      It can also be turned off within PeopleCode by passing the parameter zero to the SetTracePC built-in function.                                                                                                                                   Once the PeopleSoft session is closed, the PeopleCode trace will also automatically be turned off.

68. How many rows of data can there be at occurs level 0?                                                                          There can only be one row of data for each record definition at occurs level 0. Scroll bars are not allowed at this level.

69. How many rows of data can be there at occurs level 1?                                                                          There can be multiple rows of data for each record definition at occurs level 1 since a scroll bar can be used to navigate between them.

70. What must exist at occurs levels 1,2,and 3 but not occurs level 0? - A scroll bar.

71. How does the application processor allocate buffers to hold data?                                                         The application processor starts allocating buffers at occurs level 0 and then works its way down. It uses the panel and record definitions to determine the data it needs. From a panel definition, fields are allocated in TAB order. Generally, if there is one field from record definition on the panel, the entire row will be brought into the buffers. The exceptions are fields that are in the search dialog box, derived work fields and related display fields.

72. What record definitions will perform PeopleCode in a panel group?                                                      Any record definition that is not used as a related display record will perform PeopleCode in a panel group.

73. In what order will PeopleCode be performed on the buffers in a panel group?                                      PeopleCode starts at the top of the buffers in a panel group and works its way down to the bottom. The PeopleCode programs on a given row will be performed in the same order as the fields on the record definition.

74.  When should the SQLExec function be used instead of the scroll buffer functions?                                        Dates are converted within SQLExec built-in function by using the system variables %DateIn and %DateOut.

75. What are the drawbacks of using a SQLExec built in function?                                                             Since the SQL statement is contained within quotes, it is a black box to PeopleSoft. Means the programmer is responsible for the syntax, efficiency and maintenance of the SQL. Also, if a SQLSelect is being performed within the function, only one row of data can be returned.

76. What are Inline variables? How are they used?                                                                                        Inline variables are used to reference the value of fields stored in the buffers in SQL statements. An inline variable consists of a colon followed by the appropriate record and field name to be referenced. 136. How are dates converted within SQLExec statements? Dates are converted within SQLExec built-in function by using the system variables %DateIn and %DateOut.

77. What parameters are passed to the built-in function SQLExec?                                                              The SQLExec built-in function is passed the SQL statement to perform within quotes, followed by any bind variables or output variables if necessary.

78. What PeopleCode event is fired before a popup menu is displayed?                                          PrePopup. It allows you to alter the appearance of the popup menu.

79. What functions may be used to alter the appearance of a menu item?                                         DisableMenuItem, EnableMenuItem, HideMenuItem, CheckMenuItem and UnCheckMenuItem.

80. When is the ScrollFlush function used?                                                                                                  Is used to remove the rows of data from within a scroll bar without deleting them from the database.

81. What are the parameters of a ScrollFlush function?                                                                                 Name of the primary record definition for the scroll bar where the rows of data will be removed.

82. In which PC events domadel func can't be used?                        savepre,save post,workfl,rowselect

83. What is domodal with syntax?                                                                                         DoModal(PAGE.pagename, title, xpos, ypos, [level, scrollpath, target_row])

84. PeopleCode Tables                                                                                                               PSPCMNAME: PeopleCode Reference table.
PSPCMPROG: Store actual PeopleCode programs (actual code behind PeopleCode events).
Process Request Tables
PSPRCSQUE: This record contains the process request information to run a process request.
PSPRCSRQST: This record contains the process request information to run a process request.
PS_PMN_PRCSLIST: A view to list all process requests in the Process Monitor except for "Delete" (runstatus = 2) process requests.

85. How to pass peoplecode execution?                                                                                                         There isn't a delivered way to pause the execution of PeopleCode. However, there are two alternatives that you can use:

• The java.lang.Thread.sleep() Java Class method or;
• The DBMS_LOCK.SLEEP() database procedure (Oracle only)

Using java.lang.Thread.sleep()

To use this approach, add the following line to your PeopleCode, passing a value in milliseconds which is the amount of time to sleep:

GetJavaClass("java.lang.Thread").sleep(1000);

The code above will sleep for 1000 milliseconds (1 second). Note that this approach uses up CPU cycles and has a performance hit on the application server. If you find this to be an issue, then the second approach may be better suited if you have an Oracle database.

Using DBMS_LOCK.SLEEP()

SQLExec("exec DBMS_LOCK.SLEEP(1)");                   The code above will sleep for 1 second.

86. How to create a view using a PC?                                                                                                            We write the following code:    SQLEXEC (“CREATE VIEW VIEW_NAME AS SELECT TAB_COLS FROM TAB_NAME”);

87. Explain difference between  rowinit and rowinsert?                                                                                RowInit event fires the first time the Component process encounters a row of data. RowInsert event fires when the end-user adds a row of data. Don’t put PeopleCode in RowInsert that is already exists in RowInit, because a RowInit always fires before the RowInsert event, which will cause your code to be run twice

88. How is searchinit is most often in PeopleSoft application?                                                                      The SearchInit event is generated just before a search, add, or data-entry dialog box is displayed. SearchInit triggers associated PeopleCode in the search key fields of the search record. This enables you to control processing before a user enters values for search keys in the dialog box.

89. Explain about hide and unhide?                                                                                                               Use the Hide function to make a page field invisible. It usually appear in RowInit programs that set up the initial display of data, and in FieldChange programs that change field display based on changes the user makes to a field.                         Syntax:  Hide (fieldname);

Use the Unhide function to make a field visible that was previously hidden with Hide. If the field was hidden by setting its Invisible property in the Page Field Properties dialog box, then Unhide has no effect. Generally, you want to put this function on the same scroll level as the field that is being changed in RowInit (which executes on every row) or FieldChange (which executes on the current row). This simplifies the function’s syntax to:             Syntax:Unhide(fieldname);

90. %clientdate and %component?                                                                                                    %ClientDate returns the current date for the current user, adjusted for the user’s time zone. This is the date as specified with the current user’s personalizations.

%Component returns an uppercase character string containing the name of the current component, as set in the component definition.

91. Why command push button is used and its advantages?                                                                         Push method to add items to the end of the array:

Local Array of Number &MYARRAY;

Local Number &MYNUM;

&MYARRAY = CreateArrayRept (&MYNUM, 0);     /* This creates an empty array of number */

&MYARRAY.Push (100);

&MYARRAY.Push (200);

&MYARRAY.Push (300);

92. Explain arrays on PC?                                                                                                                               An Array is collection of data storage locations, each of which holds same data. The maximum depth of an Array is 15 Dimensions. Push and UnShift are functions of array used to add the elements into array, one from the end and one from beginning of the array. Pop is the function used to select and delete from the end of the array.

93. How to refer a low level row from higher level?                                                                                      Local Rowset &rs = GetLevel0 ().GetRow (1).GetRowset (Record.RECORDNAME);

94. Explain the relationship b/w the classes?                                                                                                  The 4 Buffer classes relate in following manner:

·         A Record contains one or more Fields. Records contain the Fields that makes up the Record.

·         A Row contains one or more Records and zero or more child Rowsets. A Row contains the records that make up that row.                                                                                                                                           A Rowset contain one or more Rows. A Rowset is a data structure that describes hierarchal data.

95. How to change prompt table dynamically?                                                                                              We can change in 2 ways:

a) Using EDITTABLE fields for Prompt Table. I.e., Prompt table property of Record Fields should be assigned with %EDITTABLE value. 

b) Using Dynamic Views.

96. Explain about on execute event?                                                                                                              OnExecute is not an event. Any PeopleCode present in this event is executed only when it’s called explicitly in a PeopleCode program, or when an action is executed.       

97. Where we write the PC in app packages? In OnExecute event we write our PeopleCode.

98. What is the use of findin option regarding PC?                                                                                       : Search through all PeopleCode or SQL Programs for a text string that would describe in a dialogue box. You can also specify which type of PeopleCode and SQL programs to search.

99. What is default processing?          Deferred Processing is a default processing

100. What are the component level PC events?  

·         PostBuild Event

·         PreBuild Event

·         SavePostChange Event

·         SavePreChange Event

·         Workflow Event

101. How are dates converted within SQLExec statements?

 Dates are converted within SQLExec built-in function by using the system variables %DateIn and %DateOut.