Changeset 46 in bookmarks for trunk/Bookmark.pm


Ignore:
Timestamp:
06/03/13 17:57:19 (11 years ago)
Author:
peter
Message:
  • moved the update method from Bookmark to Bookmarks
  • added a utility helper method _update_tags that is called by add and update in the Bookmarks class
File:
1 edited

Legend:

Unmodified
Added
Removed
  • trunk/Bookmark.pm

    r45 r46  
    3737} 
    3838 
    39 sub update { 
    40     my $self = shift; 
    41     # TODO: store the dbh somewhere better, or use a more generic "Bookmark Store" object 
    42     my $dbh = shift; 
    43     my $mtime = time; 
    44  
    45     my $changed_uri = 0; 
    46     my $sth_current = $dbh->prepare('select uri from bookmarks where id = ?'); 
    47     $sth_current->execute($self->id); 
    48     my ($stored_uri) = $sth_current->fetchrow_array; 
    49  
    50     if ($stored_uri ne $self->uri) { 
    51         # the URI has changed 
    52         my $sth_update_uri = $dbh->prepare('update resources set uri = ? where uri = ?'); 
    53         $sth_update_uri->execute($self->uri, $stored_uri); 
    54         $changed_uri++; 
    55     } 
    56  
    57     # update the title 
    58     # TODO: only do this if the title has changed 
    59     # TODO: should we update mtime if the title changes? 
    60     my $sth_update = $dbh->prepare('update resources set title = ? where uri = ?'); 
    61     $sth_update->execute($self->title, $self->uri); 
    62  
    63     # update the tags 
    64     my $changed_tags = 0; 
    65     my %new_tags = map { $_ => 1 } @{ $self->tags }; 
    66     my $sth_delete_tag = $dbh->prepare('delete from tags where uri = ? and tag = ?'); 
    67     my $sth_insert_tag = $dbh->prepare('insert into tags (uri, tag) values (?, ?)'); 
    68     my $sth_current_tags = $dbh->prepare('select tag from tags where uri = ?'); 
    69     $sth_current_tags->execute($self->uri); 
    70     while (my ($tag) = $sth_current_tags->fetchrow_array) { 
    71         if (!$new_tags{$tag}) { 
    72             # if a current tag is not in the new tags, remove it from the database 
    73             $sth_delete_tag->execute($self->uri, $tag); 
    74             $changed_tags++; 
    75         } else { 
    76             # if a new tag is already in the database, remove it from the list of tags to add 
    77             delete $new_tags{$tag}; 
    78         } 
    79     } 
    80     for my $tag (keys %new_tags) { 
    81         $sth_insert_tag->execute($self->uri, $tag); 
    82         $changed_tags++; 
    83     } 
    84  
    85     if ($changed_uri or $changed_tags) { 
    86         # update the mtime if the bookmark already existed but the tags were changed 
    87         my $sth_update = $dbh->prepare('update bookmarks set mtime = ? where uri = ?'); 
    88         $sth_update->execute($mtime, $self->uri); 
    89     } 
    90  
    91     # return the bookmark 
    92     return $self; 
    93 } 
    94  
    9539# module return 
    96401; 
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