1. What is the buffer class?
a.
There
are four data buffer classes. These are the foundation for accessing Component
Buffer data.
b.
Rowset - It is made up of a collection of
rows. A component scroll is a rowset.
c.
Row – It is instantiated from the Row class,
is a single row of data that consists of one to n records of data.
d.
Record – It is instantiated from the Record
Class. It is a single instance of data within a row and is based on a Record
definition.
e.
Field
– It is instantiated from the Field Class. It is a single instance of data
within a record and is based on a field definition.
2. What diff b/w fieldedit and change?
a.
FieldChange Event: This event is associated with two
definitions – Record Field and Component Record Field. The FieldChange event
fires on the specific field and row that just changed. It is used to perform
processing that results from a field change other than data validation. It is
mostly coupled with RowInit PeopleCode. RowInit handles the situation at the
time of row initialization, as FieldChange event is not fired at that time.
Error or warnings cannot be given in FieldChange
b.
FieldEdit Event: This event is associated with two
definitions – Record Field and Component Record Field. This event is mainly
used for validation. If the entered data is to be checked then you can write a
PeopleCode in this event. The main difference between FieldChange and FieldEdit
is that unlike FieldChange Errors and Warnings are valid in FieldEdit and
FieldEdit fires after FieldChange event. The FieldEdit event fires on the
specific field and row that just changed. In this event only one field is
checked. If the application requires all fields to be checked then it is
convenient to write the PeopleCode in SaveEdit event.
3. Diff on SearchSave and SearchInit?
a.
SearchSave:
Executed after the user Okays the search dialog. Use: It is used to force an
operator to enter value into at least one search field.
b.
SearchInit:
When: Generated just before a SearchDialog is displayed. Use: Controls
processing before values are entered for search keys in search dialog box.
4. What is the diff b/w SaveEdit and Fieldedit?
a.
SaveEdit:
When: Writing peoplecode for validation for more than one field. It triggers
peoplecode for every row of data in its buffers. This includes all panels in a
panel group.
b.
FieldEdit:
User edits the field. Use: To validate contents of a field
5. How to implement a Modal Component?
a.
DoModalComponent launches a modal
component. The
modal component launches from within an originating component. Once the modal
component displays, the user can't proceed with changes to the originating
component until either accepting or canceling the modal component.
b.
Modal
components can be displayed in any of the following action modes: Add,
Update/Display, Update/Display All, and Correction. A modal component can be
launched from any component, including another modal component. You can use
DoModalComponent from a secondary page.
6. PeopleCode
variables (global, component, local, and parameter), method, and property names
can now be up to characters long? Ans 1000
7. DoSave
() can be called from one of the following events?
a.
FieldEdit,
FieldChange, or MenuItemSelected PeopleCode.
8. PSWORKLIST
record is used for workflow routing. It should contain minimum of?
a.
6
keys in Ascending orders BUSPROCNAME, ACTIVITYNAME, EVENTNAME, WORKLISTNAME,
INSTANCEID, TRANSACTIONID
9. Which
one of the following PeopleCode debugging tools automatically converts values
of any data type other than object into string values for viewing during
debugging? WinMessage.
10. What
is the minimum number of objects an object group can consist of? 19
11. Where
do you set PeopleCode trace?
a.
Configuration
Manager and application server. We can also do this for app engine at
Peopletools-process scheduler- processes (select the app engine name), options
tab-choose append- write - value TRACE
12. What
is scroll?
a. It’s a place where you can show/add the structured data of a
table/record. The multiple layers in a
scroll show the rows in a record. We multiples scrolls that help us to work
with parent and child records.
13. What
is scroll Path?
a. A scroll path is a construction found in the parameter lists of many
component buffer functions, which specifies a scroll level in the currently
active page. Additional parameters are required to locate a row or a buffer
field at the specified scroll level.
14. What
is scroll select, etc?
a.
ScrollSelect function selects records
from a table and loads them into the scroll buffer area of a page. In
parent/Child relationships, ScrollSelect chooses all corresponding child rows
and inserts them under the next higher-level row. The function requires the
specification of the target scroll area, a source record from which to select
rows and an optional SQL string. The parameters passed to ScrollSelect vary
based on the scroll level at which the function is targeted.
b.
Level 1 ScrollSelect (1,
RECORD.target_recname, RECORD.sel_recname);
c.
Level 2 ScrollSelect (2,
RECORD.level1_recname, RECORD.target_recname, RECORD.sel_recname);
d.
Level3ScrollSelect (3,
RECORD.level1_recname, RECORD.level2_recname, RECORD.target_recname,
RECORD.sel_recname);
15. What
is the difference between a Grid and a scroll?
a.
Scroll area is used to maintain
parent child relationship we insert grid in low level scroll
b.
Example: assume we have 3 scroll
levels in our page level1, level2 and level3 we insert grid in level 3
16. How
many Grids can we insert in a single component or page?
a.
Many at same scroll level
17. Tell
me about component Buffer?
a.
Component stores all
page related information in one set of record buffers, organized by scroll
level and then by page level. This component buffer consists of rows of buffer
fields that hold data for the various records that are associated with page controls,
including the primary records, related display records, derived work records,
and translate table records.
18. Which
one of the following PeopleCode events should NOT contain the WinMessage
function?
a.
SavePreChange
19. Which
one of the following PeopleCode events can run in both two-tier and three-tier
environments on either the client or application server?
