Realtional URI rewrites

Hi Shawn --

I think the best approach would be to rewrite the path and each query parameter separately, then redirect using the reconstructed URI.

To re-write the query parameters, I'd start by creating 2 classes, one containing the map for pCatID and the other for cCatID:

class pCatIDs {
  "$ProductCategory1     126"
  "$ProductCategory2     129"
}
class cCatIDs {
  "$CategoryDefinition1  4294959927+20"
  "$CategoryDefinition2  4294959927+26"
  "$CategoryDefinition3  24+4294959919"
  "$CategoryDefinition4  36"
}

The path is static, so no class required there. Here's the iRule:

when HTTP_REQUEST {
   only process the desired requests
  if {[HTTP::path] == "/productgridview.aspx" }{
    set qstring [HTTP::query]
    log local0. "original qstring = >$qstring<"
     find match for pCatID, replace if found
    set pCatID1 [findstr "pCatID=" [HTTP::query] 7 "&"]
    if {$pCatID1 != ""}{
      set pCatID2 [findclass $pCatID1 $::pCatIDs " "]
      if {$pCatID2 != ""}{
        set qstring [string map [list $pCatID1 $pCatID2] $qstring]
        log local0. "qstring after pCatID relacement = >$qstring<"
      }
    }
     find match for cCatID, replace if found
    set cCatID1 [findstr "cCatID=" [HTTP::query] 7 "&"]
    if {$cCatID1 != ""}{
      set cCatID2 [findclass $cCatID1 $::cCatIDs " "]
      if {$cCatID2 != ""}{
        set qstring [string map [list $cCatID1 $cCatID2] $qstring]
        log local0. "qstring after cCatID relacement = >$qstring<"
      }
    }
    HTTP::respond 301 Location "http://[HTTP::host]/Pages/ProductGridView/ProductGridView.aspx$qstring"
  }
}

I think the string map/list construct will handle the "$" in the query parameters, if not you might have to do some special handling of that character -- added some logging to help out there, so look in the log for those values or runtime errors regarding non-existent variables.

HTH

/deb