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Oracle Forms: Messages
This document discusses displaying messages and alerts in Form Builder. It describes using built-in functions like ERROR_CODE and MESSAGE_TYPE to identify error types. Form Builder can display default, informative, and error messages. Alerts can be created and customized at runtime using properties and buttons to handle different responses from the user. Built-in functions like FORM_SUCCESS and FORM_FAILURE help test for success or failure.
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Oracle Forms: Messages
- 1. Form Builder Messagesand Alerts http://ebiztechnics.blogspot.com
- 2. Objectives • Default Messaging •Identify Different Types of Messaging in Form Builder • Create and control Alerts http://ebiztechnics.blogspot.com
- 3. Displaying Messages toOperators Messages Application Working Informative Error Alerts System Application http://ebiztechnics.blogspot.com
- 4. Errors and Built-ins •Built-in failure does not cause an exception. • Test built-in success with FORM_SUCCESS function. • What went wrong? – ERROR_CODE, ERROR_TEXT, ERROR_TYPE – MESSAGE _CODE, MESSAGE _TEXT, MESSAGE _TYPE Example: GO_BLOCK(‘EMP’); IF FORM_SUCCESS THEN EXECUTE_QUERY; END IF; FORM_FAILURE FORM_FATAL Returns TRUE OR FALSE. http://ebiztechnics.blogspot.com
- 5. Message Severity Level >25 20 15 10 5 0 25 All(default) More critical Define by: :SYSTEM.MESSAGE_LEVEL Fatal Error http://ebiztechnics.blogspot.com
- 6. Error Triggers • On-ErrorTrigger – Fires when system error message is issued. Built-ins to Use: – Use ERROR_TYPE – ERROR_CODE – ERROR_TEXT • On-Message Trigger – Fires when informative message is issued. Built-ins to Use: – MESSAGE_TYPE – MESSAGE_CODE – MESSAGE_TEXT http://ebiztechnics.blogspot.com
- 7. Alerts Properties Title ALLERT_BUTTON1 ALLERT_BUTTON3ALLERT_BUTTON2 AlertMessage Text (Max 200 Characters) Alert Style http://ebiztechnics.blogspot.com
- 8. Showing Alerts DECLARE n Number; BEGIN n:=SHOW_ALERT(‘Del_Alert’); IFn = ALERT_BUTTON1 THEN DELETE_RECORD; END IF; END; OR IF SHOW_ALERT('DEL_ALERT‘) = ALERT_BUTTON1 THEN DELETE_RECORD; END IF; NOTE: SHOW_ALERT Function Returns Number. http://ebiztechnics.blogspot.com
- 9. Displaying Errors toan Alert Changing the Alert Button Label: SET_ALERT_BUTTON_PROPERTY(‘Err_Alert’, ALERT_BUTTON1, LABEL,’O.K’); SET_ALERT_PROPERTY(’Err_Alert’, ALERT_MESSAGE_TEXT, ERROR_TYPE|| ’-’||TO_CHAR(ERROR_CODE)|| ’: ’||ERROR_TEXT); n := SHOW_ALERT(’Err_Alert’); http://ebiztechnics.blogspot.com
- 10. Summary • Displaying Messagesin Form Builder • Built-ins – ERROR_CODE, ERROR_TYPE, ERROR_TEXT – MESSAGE_CODE, MESSAGE_TYPE, MESSAGE_TEXT. • Testing Built-ins with FORM_SUCCESS • Alerts • Setting alert Properties at runtime. http://ebiztechnics.blogspot.com
Editor's Notes
- #7 Example of On-Error trigger IF ERROR_CODE=40202 THEN MESSAGE(‘You must fill in the field for and employee’); ELSE MESSAGE(ERROR_TYPE||’-’||TO_CHAR(ERROR_CODE)||’:’||ERROR_TEXT); END IF; RAISE FORM_TRIGGER_FAILURE; Example of On-Message trigger IF MESSAGE_CODE=40350 THEN MESSAGE(‘No records found for search values’); ELSE MESSAGE(MESSAGE_TYPE||’-’||TO_CHAR(MESSAGE_CODE)||’:’||MESSAGE_TEXT); END IF;
- #8 Note: Alert Style: Stop, Caution and Note