What is BSP extension?

Question

Could anyone please let me know what is BSP extension?
Thanks in Advance.
Best Regards,
Vijaya

Answer 1

Creation our own BSP Extensions
Advantages of BSP Extensions –
1.     Reduces the complexity of the BSP pages.
2.     Reuse.
3.     Clear-cut role distribution.
4.     Tool support within the workbench by the BSP extension editor.
Firstly while creating an element under the extension there is a provision for entering the attributes and then tin the element handler class Generally these are the methods that are to be redefined while creating our own BSP Extensions-
1.     COMPILE_TIME_IS_VALID
2.     RUNTIME_IS_VALID
3.     DO_AT_BEGINNING
4.     DO_AT_END
COMPILE_TIME_IS_VALID –
     Determines at compile time whether correct values have been assigned to element attributes. The validation result is written to the return parameter valid.  The possible values for valid are ‘X’ or ‘’ (blank).
RUNTIME_IS_VALID –
     Determines at runtime whether correct values have been assigned to the element attributes.
DO_AT_BEGINNING –
     This method is always accessed at the beginning of the element call when the BSP page is processed.
Using the return parameter RC you can control whether the content of the current BSP element is to be evaluated or not. The possible values of the return parameter RC are therefore: CO_ELEMENT_CONTINUE and CO_ELEMENT_DONE
DO_AT_END –
     This method is accessed, whatever the case, at the end of the element call. Since the entire element content is available at this point, this method can be used for Manipulation of the Element Content.
Using the return parameter RC, you can control whether the entire BSP page is to be evaluated further or not. The possible values are therefore: CO_PAGE_CONTINUE and CO_PAGE_DONE.