[MonetDB-users] MEL Question: Creating a New Search Accelerator

5 Jun 2006


      I am trying to build a new search accelerator as described in Section 
2.5 of the Monet Extension Language (MEL) User Guide 
(http://monetdb.cwi.nl/TechDocs/Core/mel/index.html). When I execute mel 
on my module definition it does not seem to recognize the ".ACCELERATOR" 
key word. In Section 3.5, "Implementing Accelerators" the 'mean' 
accelerator implementation is described. Is there an example of the 
module definition of 'mean' in MEL?
I also looked at the mel source code and found that in 
buildtools/_MEL/mel.yy it appears that 'accelerator' is not part of the 
grammar for a module:
----
definition:
        atomdef
   |    command
   |    iterator
   |    builtin
   |    operator
   |    object
   |    MEL_PRELUDE '=' ident ';'
      { $$.sym = new Prelude(MEL_PRELUDE, $3.s);        }
   |    MEL_EPILOGUE '=' ident ';'
      { $$.sym = new Epilogue(MEL_EPILOGUE, $3.s);      }
    ;
---
Questions:
(1) Are user defined search accelerator modules actually supported in 
MonetDB?
(2) If so, is there an example of such an accelerator module?
(3) If not, what would be the best way to integrate a new index 
technique into the system?
Thanks!
-John

[MonetDB-users] MEL Question: Creating a New Search Accelerator

John Cieslewicz