| 13 |
|
# deletedata(@keys) : detete all data items that match the given keys |
| 14 |
|
# match(@keys) : return the full DataItem object refs that match keys |
| 15 |
|
# items() : return the number of seperate items in the store |
| 16 |
+ |
# store(filename) : dump to file |
| 17 |
+ |
# restore(filename) : restore from file |
| 18 |
|
|
| 19 |
|
package Utilities::HashDB; |
| 20 |
|
use Utilities::DataItem; |
| 21 |
+ |
use FileHandle; |
| 22 |
|
require 5.001; |
| 23 |
|
|
| 24 |
|
sub new { |
| 78 |
|
return @data; |
| 79 |
|
} |
| 80 |
|
|
| 81 |
+ |
sub store { |
| 82 |
+ |
my $self=shift; |
| 83 |
+ |
my $filename=shift; |
| 84 |
+ |
|
| 85 |
+ |
my $fh=FileHandle->new(); |
| 86 |
+ |
open ($fh, ">$filename") or die "Unable to open file $filename\n $!\n"; |
| 87 |
+ |
foreach $object ( @{$self->{dataitems}} ) { |
| 88 |
+ |
my $temp=join '::', $object->keys(); |
| 89 |
+ |
$temp=$object->data()."::".$temp; |
| 90 |
+ |
print $fh $temp."\n"; |
| 91 |
+ |
} |
| 92 |
+ |
close $fh; |
| 93 |
+ |
} |
| 94 |
+ |
|
| 95 |
+ |
sub restore { |
| 96 |
+ |
my $self=shift; |
| 97 |
+ |
my $filename=shift; |
| 98 |
+ |
my @arr; |
| 99 |
+ |
|
| 100 |
+ |
my $fh=FileHandle->new(); |
| 101 |
+ |
open ($fh, "<$filename") or die "Unable to open file $filename\n $!\n"; |
| 102 |
+ |
while ( <$fh> ) { |
| 103 |
+ |
next if /^#/; |
| 104 |
+ |
@arr=split ':', $_; |
| 105 |
+ |
$self->setdata(@arr); |
| 106 |
+ |
} |
| 107 |
+ |
close $fh; |
| 108 |
+ |
} |
| 109 |
+ |
|
| 110 |
|
# ------------------- Support Routines ------------ |
| 111 |
|
# returns list of array indices of items matching the keys |
| 112 |
|
|
