Oracle Forms: Record Groups
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Oracle Forms: Record Groups
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Oracle Forms: Record Groups
- 1. Working With Record Groups http://ebiztechnics.blogspot.com
- 2. 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 http://ebiztechnics.blogspot.com
- 3. 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 http://ebiztechnics.blogspot.com
- 4. 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; ... http://ebiztechnics.blogspot.com
- 5. 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 http://ebiztechnics.blogspot.com
- 6. Defining Record Groups at Design Time http://ebiztechnics.blogspot.com
- 7. Creating and Deleting Record Groups CREATE_GROUP CREATE_GROUP_FROM_QUERY Record group ID Record group ID ID Name DELETE_GROUP Name, QueryName http://ebiztechnics.blogspot.com
- 8. 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 http://ebiztechnics.blogspot.com
- 9. Populating Query Record Groups POPULATE_GROUP (_WITH_QUERY) SELECT deptno ID, dname FROM dept ID 10 20 30 40 Dname ACCOUNTING SALES FINANCE OPERATIONS http://ebiztechnics.blogspot.com
- 10. 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 http://ebiztechnics.blogspot.com
- 11. Defining Query Record Groups Programmatically Find Record Group ID NULL ? Create Group from Query Populate Group Yes No http://ebiztechnics.blogspot.com
- 12. 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 http://ebiztechnics.blogspot.com
- 13. Manipulating Record Groups Get number of group rows For all group rows Cell value= given value Yes No Return row number Return NULL http://ebiztechnics.blogspot.com
- 14. Manipulating Selected Record Group Rows For all group rows Get number of group rows Row number even? Yes No Mark row as selected http://ebiztechnics.blogspot.com
- 15. 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’); http://ebiztechnics.blogspot.com
- 16. 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 http://ebiztechnics.blogspot.com
- 17. Using List Item with Record Groups Record Group POPULATE_LIST RETRIEVE_LIST http://ebiztechnics.blogspot.com
- 18. 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 http://ebiztechnics.blogspot.com
- 19. 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 http://ebiztechnics.blogspot.com
- 20. 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 http://ebiztechnics.blogspot.com
Notas del editor
- Technical Note POPULATE_GROUP built-in function returns 0 when population succeeds And 1 if population does not succeed.
- Technical Note If a global record group is created from (or populated with) a query while Executing a form A. and the query string contains bind variable references That are local to A (:block.item or :PARAMETER.param), then when Form A Terminates execution, the global query record group is converted to a Global nonquery record group. The record group retains its data, but a Subsequent POPULATE_GROUP is considered an error.
- Technical Note Because a base table list item must specify a value for either the initial Property or the Mapping of Other Values property, the record group used to Dynamically populate a list item must also contain this value. Be sure the Record group query returns this value.