Oracle Forms: Record Groups

Working With Record Groups
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Objectives
• Describe the record group object
• Use record groups
• Define record groups at design time
• Control record groups by using built-in functions
• Define query record groups programmatically
• Define nonquery record groups programmatically
• Manipulate record group rows
• Define lists of values (LOVs) programmatically
• Manipulate list items programmatically
• Implement dynamic list items
• Add values to combo boxes

Types of Record Groups
Query Non Query Static
 Based on a
SELECT
Statement
 Design Time
 Run Time
 Not Based on a
SELECT
Statement
 Run Time
 Not Based on a
SELECT
Statement
 Design Time

Record Groups and LOVs
Record groups and LOVs
• Forms implicitly creates query record groups.
• Use SET_LOV_PROPERTY to replace
default record group.
...
IF Get_LOV_Property(lov_id,GROUP_NAME) ='GROUP1'
THEN
Set_LOV_Property(lov_id,GROUP_NAME,'GROUP2');
END IF;
...

Uses of Record Groups
• Constructing dynamic Queries
• Storing form-configuration information
• Communicating within a form
• Passing data to other forms
• Passing data to other Oracle products
– Reports
– Graphics
• Populating or storing list items
• Populating Hierarchical Tree items

Defining Record Groups at Design Time

Creating and Deleting Record Groups
CREATE_GROUP CREATE_GROUP_FROM_QUERY
Record
group ID
Record
group ID
ID Name
DELETE_GROUP
Name, QueryName

Modifying the Structure
ADD_GROUP_ROW
DELETE_GROUP_ROW
Row No ID Dname Loc
1 10 Accounting
2
3 20 Sales
4 30 Finance
ADD_GROUP_COLUMN
SET_GROUP_CHAR_CELL
GET_GROUP_NUMBER_CELL

Populating Query Record Groups
POPULATE_GROUP
(_WITH_QUERY)
SELECT deptno ID, dname
FROM dept
ID
10
20
30
40
Dname
ACCOUNTING
SALES
FINANCE
OPERATIONS

Processing Record Group Rows
GET_GROUP_SELECTION_COUNT
SET_GROUP_SELECTION
GET_GROUP_SELECTION
Selection No Row No
1
1 2
3
2 4
ID Name
1 James
2 King
3 Allen
4 Smith
GET_GROUP_ROW_COUNT

Defining Query Record Groups
Programmatically
Find Record Group
ID NULL ?
Create Group from Query
Populate Group
Yes
No

Defining Nonquery Record Groups
Programmatically
Find Record Group
ID NULL ?
Create Group
Yes
No
Add Group Columns
Add Group Row
Set Group Cell Values
Delete Group Rows
Find Group Columns

Manipulating Record Groups
Get number of group rows
For all
group
rows
Cell value=
given value
Yes No
Return row
number
Return NULL

Manipulating Selected Record Group Rows
For all
group
rows
Get number of group rows
Row number
even?
Yes No
Mark row
as selected

Defining Global Record Groups
• Record group visible to all forms in
an application
• “Scope” parameter
– FORM_SCOPE (default)
– GLOBAL_SCOPE
...CREATE_GROUP(‘emp_rg’, GLOBAL_SCOPE’);
...CREATE_GROUP_FROM_QUERY(‘emp_rg’,
‘SELECT empno FROM emp’, ‘GLOBAL_SCOPE’);

Manipulating List Items Programmatically
• ADD_LIST_ELEMENT
• DELETE_LIST_ELEMENT
• CLEAR_LIST
• GET_LIST_ELEMENT_LABEL
• GET_LIST_ELEMENT_VALUE
• GET_LIST_ELEMENT_COUNT
• POPULATE_LIST
• RETRIEVE_LIST

Using List Item with Record Groups
Record Group
POPULATE_LIST RETRIEVE_LIST

Implementing Dynamic List Items
Find record group
Yes ID NULL? No
Create group from query
Populate group
Yes Success? No
Populate list
Display first list label

Adding Values to Combo Boxes
Get number of list elements
For all
list
elements
Element value=
Item value?
Yes No
Return
Add list element with item value

Summary
• Define design-time query and static record groups
• Define run time query and non-query record groups
• Use Built-in functions for populating record groups
• Define Global record groups
• Use record groups for:
– Constructing dynamic SELECT statements
– Storing or passing data
– Populating or storing list items
• Manipulate list items programmatically
– Built-in functions for list items

Oracle Forms: Record Groups

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