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git-svn-id: http://svn.foswiki.org/trunk/TagsPlugin@4673 0b4bb1d4-4e5a-0410-9cc4-b2b747904278
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OliverKrueger
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# This script Copyright (c) 2009 Oliver Krueger, (wiki-one.net) | ||
# and distributed under the GPL (see below) | ||
# | ||
# This program is free software; you can redistribute it and/or | ||
# modify it under the terms of the GNU General Public License | ||
# as published by the Free Software Foundation; either version 2 | ||
# of the License, or (at your option) any later version. | ||
# | ||
# This program is distributed in the hope that it will be useful, | ||
# but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
# GNU General Public License for more details, published at | ||
# http://www.gnu.org/copyleft/gpl.html | ||
# | ||
# Author(s): Oliver Krueger | ||
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package Foswiki::Plugins::TagsPlugin::Merge; | ||
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use strict; | ||
use warnings; | ||
use Error qw(:try); | ||
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=begin TML | ||
---++ rest( $session ) | ||
This is the REST wrapper for merge. | ||
Takes the following url parameters: | ||
tag1 : name of the tag to be renamed | ||
tag2 : new name for the old tag | ||
It checks the prerequisites and sets the following status codes: | ||
200 : Ok | ||
400 : url parameter(s) are missing | ||
403 : the user is not allowed to rename | ||
Return: | ||
In case of an error (!=200) just the status code incl. short description is returned. | ||
Otherwise a 200 and the number of affected tags (usually 0 or 1) is returned. | ||
TODO: | ||
force http POST method | ||
=cut | ||
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sub rest { | ||
my $session = shift; | ||
my $query = Foswiki::Func::getCgiQuery(); | ||
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my $tag1 = $query->param('tag1') || ''; | ||
my $tag2 = $query->param('tag2') || ''; | ||
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$tag1 = Foswiki::Sandbox::untaintUnchecked($tag1); | ||
$tag2 = Foswiki::Sandbox::untaintUnchecked($tag2); | ||
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# | ||
# checking prerequisites | ||
# | ||
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# first check the existence of all necessary url parameters | ||
# | ||
if ( !$tag1 ) { | ||
$session->{response}->status(400); | ||
return "<h1>400 'tag1' parameter missing</h1>"; | ||
} | ||
if ( !$tag2 ) { | ||
$session->{response}->status(400); | ||
return "<h1>400 'tag2' parameter missing</h1>"; | ||
} | ||
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# check if current user is allowed to do so | ||
# | ||
my $tagAdminGroup = $Foswiki::cfg{TagsPlugin}{TagAdminGroup} || "AdminGroup"; | ||
if ( !Foswiki::Func::isGroupMember( $tagAdminGroup, Foswiki::Func::getWikiName()) ) { | ||
$session->{response}->status(403); | ||
return "<h1>403 Forbidden</h1>"; | ||
} | ||
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# | ||
# actioning | ||
# | ||
$session->{response}->status(200); | ||
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# returning 0 on failure and some other positive number on success | ||
return Foswiki::Plugins::TagsPlugin::Merge::do( $tag1, $tag2 ); | ||
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} | ||
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=begin TML | ||
---++ do( $tag1, $tag2 ) | ||
This does the merging. Updates both Stat tables and deletes unused entries for obsolete tag2. | ||
Takes the following parameters: | ||
tag1 : name of the tag which remains | ||
tag2 : name of the tag which will be merged into tag1 | ||
This routine does not check any prerequisites and/or priviledges. It returns 0, if | ||
tag1 or tag2 was not found. | ||
Return: | ||
0 on failure, any other positive number on success. | ||
=cut | ||
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sub do { | ||
my ( $tag1, $tag2 ) = @_; | ||
my $db = new Foswiki::Contrib::DbiContrib; | ||
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# determine tag_id for given tag1 and exit if its not there | ||
# | ||
my $tag_id1; | ||
my $statement = sprintf( 'SELECT %s from %s WHERE %s = ? AND %s = ?', | ||
qw( item_id Items item_name item_type) ); | ||
my $arrayRef = $db->dbSelect( $statement, $tag1, 'tag' ); | ||
if ( defined( $arrayRef->[0][0] ) ) { | ||
$tag_id1 = $arrayRef->[0][0]; | ||
} | ||
else { return " 0"; } | ||
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# determine tag_id for given tag2 and exit if its not there | ||
# | ||
my $tag_id2; | ||
$statement = sprintf( 'SELECT %s from %s WHERE %s = ? AND %s = ?', | ||
qw( item_id Items item_name item_type) ); | ||
my $arrayRef = $db->dbSelect( $statement, $tag2, 'tag' ); | ||
if ( defined( $arrayRef->[0][0] ) ) { | ||
$tag_id2 = $arrayRef->[0][0]; | ||
} | ||
else { return " 0"; } | ||
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# now we are ready to actually merge | ||
# | ||
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# merge the usage of the tags (in UserItemTag) | ||
# IGNOREing duplicate entries, which usually occur (may leave some garbage behind) | ||
$statement = | ||
sprintf( 'UPDATE IGNORE %s SET %s = ? WHERE %s = ?', | ||
qw( UserItemTag tag_id tag_id ) ); | ||
my $affected_rows = $db->dbInsert( $statement, $tag_id1, $tag_id2 ); | ||
Foswiki::Func::writeDebug("Merge: $statement; ($tag_id1, $tag_id2) -> $affected_rows"); | ||
if ( $affected_rows eq "0E0" ) { $affected_rows=0; }; | ||
# DELETEing the garbage (usually tags on topics, which were tagged with tag1 and tag2) | ||
$statement = | ||
sprintf( 'DELETE from %s WHERE %s = ?', | ||
qw( UserItemTag tag_id) ); | ||
my $modified = $db->dbDelete( $statement, $tag_id2 ); | ||
Foswiki::Func::writeDebug("Merge: $statement; ($tag_id2) -> $modified"); | ||
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# update stats in TagStat (rebuild it actually) | ||
my $tagstat = 0; | ||
$statement = sprintf( 'SELECT count(*) as count from %s WHERE %s = ?', | ||
qw( UserItemTag tag_id ) ); | ||
$arrayRef = $db->dbSelect( $statement, $tag_id1 ); | ||
if ( defined( $arrayRef->[0][0] ) ) { | ||
$tagstat = $arrayRef->[0][0]; | ||
} | ||
$statement = | ||
sprintf( 'UPDATE %s SET %s=? WHERE %s = ?', | ||
qw( TagStat num_items tag_id) ); | ||
$modified = $db->dbInsert( $statement, $tagstat, $tag_id1 ); | ||
Foswiki::Func::writeDebug("Merge: $statement; ($tagstat, $tag_id1) -> $modified"); | ||
unless ( $modified ) { | ||
$statement = | ||
sprintf( 'INSERT INTO %s (%s, %s) VALUES (?, ?)', | ||
qw( TagStat tag_id num_items ) ); | ||
$modified = $db->dbInsert( $statement, $tag_id1, $tagstat ); | ||
Foswiki::Func::writeDebug("Merge: $statement; ($tag_id1, $tagstat) -> $modified"); | ||
} | ||
$statement = | ||
sprintf( 'DELETE from %s WHERE %s = ?', | ||
qw( TagStat tag_id) ); | ||
$modified = $db->dbDelete( $statement, $tag_id2 ); | ||
Foswiki::Func::writeDebug("Merge: $statement; ($tag_id2) -> $modified"); | ||
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# update stats in UserTagStat | ||
### TODO: implement rebuilding UserTagStat rebuild | ||
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# delete (empty) tag2 | ||
$statement = | ||
sprintf( 'DELETE from %s WHERE %s = ?', | ||
qw( Items item_id) ); | ||
$modified = $db->dbDelete( $statement, $tag_id2 ); | ||
Foswiki::Func::writeDebug("Merge: $statement; ($tag_id2) -> $modified"); | ||
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# flushing data to dbms | ||
# | ||
$db->commit(); | ||
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# add extra space, so that zero affected rows does not clash with returning "0" from rest invocation | ||
return " $affected_rows"; | ||
} | ||
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1; |
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@@ -0,0 +1,145 @@ | ||
# This script Copyright (c) 2009 Oliver Krueger, (wiki-one.net) | ||
# and distributed under the GPL (see below) | ||
# | ||
# This program is free software; you can redistribute it and/or | ||
# modify it under the terms of the GNU General Public License | ||
# as published by the Free Software Foundation; either version 2 | ||
# of the License, or (at your option) any later version. | ||
# | ||
# This program is distributed in the hope that it will be useful, | ||
# but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
# GNU General Public License for more details, published at | ||
# http://www.gnu.org/copyleft/gpl.html | ||
# | ||
# Author(s): Oliver Krueger | ||
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package Foswiki::Plugins::TagsPlugin::Rename; | ||
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use strict; | ||
use warnings; | ||
use Error qw(:try); | ||
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=begin TML | ||
---++ rest( $session ) | ||
This is the REST wrapper for rename. | ||
Takes the following url parameters: | ||
oldtag : name of the tag to be renamed | ||
newtag : new name for the old tag | ||
It checks the prerequisites and sets the following status codes: | ||
200 : Ok | ||
400 : url parameter(s) are missing | ||
403 : the user is not allowed to rename | ||
Return: | ||
In case of an error (!=200) just the status code incl. short description is returned. | ||
Otherwise a 200 and the number of affected tags (usually 0 or 1) is returned. | ||
TODO: | ||
force http POST method | ||
=cut | ||
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sub rest { | ||
my $session = shift; | ||
my $query = Foswiki::Func::getCgiQuery(); | ||
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my $tag_old = $query->param('oldtag') || ''; | ||
my $tag_new = $query->param('newtag') || ''; | ||
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$tag_old = Foswiki::Sandbox::untaintUnchecked($tag_old); | ||
$tag_new = Foswiki::Sandbox::untaintUnchecked($tag_new); | ||
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# | ||
# checking prerequisites | ||
# | ||
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# first check the existence of all necessary url parameters | ||
# | ||
if ( !$tag_old ) { | ||
$session->{response}->status(400); | ||
return "<h1>400 'oldtag' parameter missing</h1>"; | ||
} | ||
if ( !$tag_new ) { | ||
$session->{response}->status(400); | ||
return "<h1>400 'newtag' parameter missing</h1>"; | ||
} | ||
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# check if current user is allowed to do so | ||
# | ||
my $tagAdminGroup = $Foswiki::cfg{TagsPlugin}{TagAdminGroup} || "AdminGroup"; | ||
if ( !Foswiki::Func::isGroupMember( $tagAdminGroup, Foswiki::Func::getWikiName()) ) { | ||
$session->{response}->status(403); | ||
return "<h1>403 Forbidden</h1>"; | ||
} | ||
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# | ||
# actioning | ||
# | ||
$session->{response}->status(200); | ||
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# returning the number of affected tags | ||
return Foswiki::Plugins::TagsPlugin::Rename::do( $tag_old, $tag_new ); | ||
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} | ||
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=begin TML | ||
---++ do( $tag_old, $tag_new ) | ||
This does untagging. | ||
Takes the following parameters: | ||
tag_old : name of tag to be renamed | ||
tag_new : new name for the old tag | ||
This routine does not check any prerequisites and/or priviledges. It returns 0, if | ||
the old tagname was not found or the new tagname already exists. | ||
Return: | ||
number of affected tags. | ||
=cut | ||
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sub do { | ||
my ( $tag_old, $tag_new ) = @_; | ||
my $db = new Foswiki::Contrib::DbiContrib; | ||
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# determine tag_id for given tag_old and exit if its not there | ||
# | ||
my $tag_id; | ||
my $statement = sprintf( 'SELECT %s from %s WHERE %s = ? AND %s = ?', | ||
qw( item_id Items item_name item_type) ); | ||
my $arrayRef = $db->dbSelect( $statement, $tag_old, 'tag' ); | ||
if ( defined( $arrayRef->[0][0] ) ) { | ||
$tag_id = $arrayRef->[0][0]; | ||
} | ||
else { return " 0"; } | ||
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# check if new tagname already exists by probing for an tag_id | ||
# | ||
$statement = sprintf( 'SELECT %s from %s WHERE %s = ? AND %s = ?', | ||
qw( item_id Items item_name item_type) ); | ||
$arrayRef = $db->dbSelect( $statement, $tag_new, 'tag' ); | ||
if ( defined( $arrayRef->[0][0] ) ) { | ||
return " 0"; | ||
} | ||
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# now we are ready to actually rename | ||
# | ||
$statement = | ||
sprintf( 'UPDATE %s SET %s = ? WHERE %s = ?', | ||
qw( Items item_name item_id ) ); | ||
Foswiki::Func::writeDebug("Rename: $statement; ($tag_new, $tag_id)"); | ||
my $affected_rows = $db->dbInsert( $statement, $tag_new, $tag_id ); | ||
if ( $affected_rows eq "0E0" ) { $affected_rows=0; }; | ||
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# flushing data to dbms | ||
# | ||
$db->commit(); | ||
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# add extra space, so that zero affected rows does not clash with returning "0" from rest invocation | ||
return " $affected_rows"; | ||
} | ||
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1; |