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Data::Stag::HashDB.3pm

NAME

   Data::Stag::HashDB
 
 

SYNOPSIS

   # parsing a file into a hash
   my $hdb = Data::Stag::HashDB->new;
   $hdb->unique_key("ss_details/social_security_no");
   $hdb->record_type("person");
   my $obj = {};
   $hdb->index_hash($obj);
   Data::Stag->parse(-file=>$fn, -handler=>$hdb);
   my $person = $obj->{'999-9999-9999'};
   print $person->xml;
 
   # indexing an existing stag tree into a hash
   my $personset = Data::Stag->parse($fn);
   my $hdb = Data::Stag::HashDB->new;
   $hdb->unique_key("ss_details/social_security_no");
   $hdb->record_type("person");
   my $obj = {};
   $hdb->index_hash($obj);
   $personset->sax($hdb);
   my $person = $obj->{'999-9999-9999'};
   print $person->xml;
 
 

DESCRIPTION

Used for building indexes over Stag files or objects

You need to provide a record_type - this is the type of element that will be indexed

You need to provide a unique_key - this is a single value used to index the record_types

For example, if we have data in the stag structure below, and if ss_no is unique (we assume it is) then we can index all the people in the database using the code above

   publicinfo:
     persondata:
       person:
         ss_details:
           social_security_no:
         name:
         address:
 
 

There is a subclass of this method callsed Data::Stag::StagDB, which makes the hash persistent

PUBLIC METHODS -

record_type

   Usage   -
   Returns -
   Args    -
 
 

unique_key

   Usage   -
   Returns -
   Args    -
 
 

index_hash

   Usage   -
   Returns -
   Args    -
 
 

POD ERRORS

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Around line 40:

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