Error handling and display API packages

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This topic presents an overview of the routines in the wwerr_api_error and wwerr_api_error_ui API packages. These API packages contain all the routines necessary to perform the following operations: Use error handling methods add, retrieve, and clear errors from an error stack, and to do related operations. Use error display methods to support a standardized UI for presenting errors contained in the error stack. Error handling API (wwerr_api_error) topic names and descriptions Error handling and display methods Presents introductory information for error and error UI API packages. Error handling constants Presents the constants that can be used by the error handling API methods. Error_record record structure and table Presents the error record structure. add procedure (domain, subdomain, name, context) Adds an error to the error stack. add procedure (domain, id, context) Adds an error to the error stack. clear procedure Clears the error stack. is_empty function Determines if the error stack is empty. get_top function Returns the uppermost entry of the error stack. get_errors function Returns a list of the entries in the error stack. get_text_stack function Reports the current error stack as varchar2. get_count function Reports the number of entries in the error stack. Error display API (wwerr_api_error_ui) topic names and descriptions Content type constants Presents the constants that can be used by the error display API methods. show procedure Displays the error stack in the output format requested. show_html procedure Displays the error stack in full screen HTML format show_inline_html procedure Displays the error stack in inline HTML format. get_inline_html function Returns the error stack in HTML format. show_xml procedure Displays the error stack in XML format. show_text procedure Displays the error stack in text format. show_inline_text procedure Displays the error stack in inline text format. get_text_errors function Reports the current error stack as varchar2. show_error_page procedure Displays a stand alone error page with a Back link for errors that don't get generated from Oracle Portal.

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