pears.BlobstoreRead [iqx]

This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong.

====== pears.BlobstoreRead ======
<WRAP center round info>
Generated schema reference. Regenerate this page from the SQL unload; keep hand-maintained business notes in the narrative namespace.
</WRAP>

===== Original SQL =====
<code sql>
create function "pears"."BlobstoreRead"( 
  /* Application Maintained Function / Procedure - DO NOT EDIT*/
  in "blobclass" char(1),in "blobid" char(20),in "requestedby" char(15) ) 
returns integer
not deterministic
begin
  declare "z" integer;
  declare "xpath" char(250);
  declare "dat" long binary;
  select "isnull"("zipped",0),"trim"("externalfilepath"),"blob" into "z","xpath","dat" from "blobstore" where "class" = "blobclass" and "id" = "blobid";
  if "z" is null then
    return null // No row
  end if;
  if "dat" is null and "isnull"("xpath",'') <> '' then
    set "dat" = "xp_read_file"("BlobstoreFullPath"("xpath"))
  end if;
  if "dat" is null then
    return null // No blob
  end if;
  if "varexists"('iqblobtemp') = 0 then
    create variable "iqblobtemp" long binary
  end if;
  set "iqblobtemp" = "dat";
  if "requestedby" is not null then
    update "blobstore" set "accessedby" = "requestedby","accessedat" = current timestamp where "class" = "blobclass" and "id" = "blobid"
  end if;
  return "z"
end
</code>