Re: example queries for nnir

[Harry Putnam <reader@newsguy.com>]

Kai.Grossjohann@CS.Uni-Dortmund.DE (Kai Großjohann) writes:

> Once you have such a region, you can either put all the words in it
> into the global field, or into some other field.  In both cases, if
> you want to be able to restrict the search to the body, you should NOT
> specify another region which puts the words into the global field, or
> into the other field.
> 
> My suggestion meant that you put all the words from the body into the
> global field, and no other words into the global field.  Hence
> searching the global field is the same as searching the body.

Is this really possible?  I've experimented at some length with GLOBAL
and LOCAL keywords.  

Using the nnir  example *.fmt file, leaving the regexps as is and only
changing the index specs.  In short replace every occurance of BOTH
with LOCAL  and for simplicity every field spec is set to TEXT rather
than SOUNDEX.  So that they read `TEXT LOCAL'.

Only the `body' (/^$/) RE is left GLOBAL.

Posting the file in case I've got something else wrong in there.   But
this *.fmt file causes waisindex to dump core.  There are only about
1000 messages in the data base. 

 # Each mail is in a file, much like the MH format.
                                         
 # Document separator should never match -- each file is a document.
 record-sep: /^@this regex should never match@$/
                                         
 # Searchable fields specification.      
                                         
 region: /^[sS]ubject:/ /^[sS]ubject: */ 
         subject "Subject header" stemming TEXT LOCAL
 end: /^[^ \t]/                          
                                         
 region: /^([tT][oO]|[cC][cC]):/ /^([tT][oO]|[cC][cC]): */
         to "To and Cc headers" TEXT LOCAL
 end: /^[^ \t]/                          
                                         
 region: /^[fF][rR][oO][mM]:/ /^[fF][rR][oO][mM]: */
         from "From header" TEXT LOCAL
 end: /^[^ \t]/                          
                                         
 region: /^$/                            
         stemming TEXT GLOBAL            
 end: /^@this regex should never match@$/


With this command line:


   The last few lines of output: 

   2433: 7305: Jul 18 21:07:23 2000: 100: Total word count for dictionary
   is: 0

   2433: 7306: Jul 18 21:07:23 2000: -1: error finding
   total_word_count in dictionary ./mail
   
   2433: 7307: Jul 18 21:07:23 2000: -1: Could not read the dictionary
   block 139980800, length 1000

   Segmentation fault (core dumped)