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Icetips Article



Templates: Legacy changes for more embeds around views
1999-01-09 -- Malcolm Collett
 
Newsgroups: comp.lang.clarion


>I am using the Validate Record:Filter Checking Embed from the early
>responses to my post.  This method works well with small tables but
>with the large one that I am working with it takes a whole lot of
>time.
>
>I was looking for something like your second option.  I have not done
>much template programming (last did it 1 1/2 years ago) and was
>wondering if you or someone else could give me a hint as to how and
>where to modify the report template.


Hi Gilbert

You must remember that Range Limits are fast, Filters are slow. A range
limit needs a key. If there is no suitable key, it will always be slow.
If there is a suitable key, Prop:Filter will use.

Add the 3 marked lines to the Gpprocess.tpw file. When you do reports,
you will have 3 additional embeds. I use the the Before and After View
embeds to change the sort order. The same 3 embeds will also be in
Process procedures - both Process and Report use the Gpprocess.tpw file.

#!---------------------------------------------------
#GROUP(%ProcessSaveLimits),AUTO
#EMBED(%WindowEventOpenWindowBefore,'Window Event: Open Window, before
setting up for reading')
#EMBED(%BeforeKeySet,'Before SET() issued')
  #IF(%PrimaryKey)
SET(%PrimaryKey)
  #ELSE
SET(%Primary)
  #ENDIF
#INSERT(%StandardWriteViewFilter,%ProcessFilter)
#EMBED(%MGCAfterPropFilter,'MGC After Prop:Filter')            #! MGC
IF ERRORCODE()
  StandardWarning(Warn:ViewOpenError)
END
#EMBED(%MGCBeforeOpenView,'MGC Before Opening the View')     #! MGC
OPEN(%ListView)
#EMBED(%MGCAfterOpenView,'MGC After Opening the View')       #! MGC
IF ERRORCODE()
  StandardWarning(Warn:ViewOpenError)
END
#EMBED(%BeforeInitialGet,'Before first record retrieval')


Regards
Malcolm Collett
------------------------------
mcollett AT iafrica DOT com
==============================



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