Файл: qa-include/qa-db-points.php
Строк: 318
<?php
/*
Question2Answer (c) Gideon Greenspan
http://www.question2answer.org/
File: qa-include/qa-db-points.php
Version: See define()s at top of qa-include/qa-base.php
Description: Database-level access to user points and statistics
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.
More about this license: http://www.question2answer.org/license.php
*/
if (!defined('QA_VERSION')) { // don't allow this page to be requested directly from browser
header('Location: ../');
exit;
}
function qa_db_points_option_names()
/*
Returns an array of option names required to perform calculations in userpoints table
*/
{
if (qa_to_override(__FUNCTION__)) { $args=func_get_args(); return qa_call_override(__FUNCTION__, $args); }
return array(
'points_post_q', 'points_select_a', 'points_per_q_voted_up', 'points_per_q_voted_down', 'points_q_voted_max_gain', 'points_q_voted_max_loss',
'points_post_a', 'points_a_selected', 'points_per_a_voted_up', 'points_per_a_voted_down', 'points_a_voted_max_gain', 'points_a_voted_max_loss',
'points_vote_up_q', 'points_vote_down_q', 'points_vote_up_a', 'points_vote_down_a',
'points_multiple', 'points_base',
);
}
function qa_db_points_calculations()
/*
Returns an array containing all the calculation formulae for the userpoints table. Each element of this
array is for one column - the key contains the column name, and the value is a further array of two elements.
The element 'formula' contains the SQL fragment that calculates the columns value for one or more users,
where the ~ symbol within the fragment is substituted for a constraint on which users we are interested in.
The element 'multiple' specifies what to multiply each column by to create the final sum in the points column.
*/
{
if (qa_to_override(__FUNCTION__)) { $args=func_get_args(); return qa_call_override(__FUNCTION__, $args); }
require_once QA_INCLUDE_DIR.'qa-app-options.php';
$options=qa_get_options(qa_db_points_option_names());
return array(
'qposts' => array(
'multiple' => $options['points_multiple']*$options['points_post_q'],
'formula' => "COUNT(*) AS qposts FROM ^posts AS userid_src WHERE userid~ AND type='Q'",
),
'aposts' => array(
'multiple' => $options['points_multiple']*$options['points_post_a'],
'formula' => "COUNT(*) AS aposts FROM ^posts AS userid_src WHERE userid~ AND type='A'",
),
'cposts' => array(
'multiple' => 0,
'formula' => "COUNT(*) AS cposts FROM ^posts AS userid_src WHERE userid~ AND type='C'",
),
'aselects' => array(
'multiple' => $options['points_multiple']*$options['points_select_a'],
'formula' => "COUNT(*) AS aselects FROM ^posts AS userid_src WHERE userid~ AND type='Q' AND selchildid IS NOT NULL",
),
'aselecteds' => array(
'multiple' => $options['points_multiple']*$options['points_a_selected'],
'formula' => "COUNT(*) AS aselecteds FROM ^posts AS userid_src JOIN ^posts AS questions ON questions.selchildid=userid_src.postid WHERE userid_src.userid~ AND userid_src.type='A' AND NOT (questions.userid<=>userid_src.userid)",
),
'qupvotes' => array(
'multiple' => $options['points_multiple']*$options['points_vote_up_q'],
'formula' => "COUNT(*) AS qupvotes FROM ^uservotes AS userid_src JOIN ^posts ON userid_src.postid=^posts.postid WHERE userid_src.userid~ AND LEFT(^posts.type, 1)='Q' AND userid_src.vote>0",
),
'qdownvotes' => array(
'multiple' => $options['points_multiple']*$options['points_vote_down_q'],
'formula' => "COUNT(*) AS qdownvotes FROM ^uservotes AS userid_src JOIN ^posts ON userid_src.postid=^posts.postid WHERE userid_src.userid~ AND LEFT(^posts.type, 1)='Q' AND userid_src.vote<0",
),
'aupvotes' => array(
'multiple' => $options['points_multiple']*$options['points_vote_up_a'],
'formula' => "COUNT(*) AS aupvotes FROM ^uservotes AS userid_src JOIN ^posts ON userid_src.postid=^posts.postid WHERE userid_src.userid~ AND LEFT(^posts.type, 1)='A' AND userid_src.vote>0",
),
'adownvotes' => array(
'multiple' => $options['points_multiple']*$options['points_vote_down_a'],
'formula' => "COUNT(*) AS adownvotes FROM ^uservotes AS userid_src JOIN ^posts ON userid_src.postid=^posts.postid WHERE userid_src.userid~ AND LEFT(^posts.type, 1)='A' AND userid_src.vote<0",
),
'qvoteds' => array(
'multiple' => $options['points_multiple'],
'formula' => "COALESCE(SUM(".
"LEAST(".((int)$options['points_per_q_voted_up'])."*upvotes,".((int)$options['points_q_voted_max_gain']).")".
"-".
"LEAST(".((int)$options['points_per_q_voted_down'])."*downvotes,".((int)$options['points_q_voted_max_loss']).")".
"), 0) AS qvoteds FROM ^posts AS userid_src WHERE LEFT(type, 1)='Q' AND userid~",
),
'avoteds' => array(
'multiple' => $options['points_multiple'],
'formula' => "COALESCE(SUM(".
"LEAST(".((int)$options['points_per_a_voted_up'])."*upvotes,".((int)$options['points_a_voted_max_gain']).")".
"-".
"LEAST(".((int)$options['points_per_a_voted_down'])."*downvotes,".((int)$options['points_a_voted_max_loss']).")".
"), 0) AS avoteds FROM ^posts AS userid_src WHERE LEFT(type, 1)='A' AND userid~",
),
'upvoteds' => array(
'multiple' => 0,
'formula' => "COALESCE(SUM(upvotes), 0) AS upvoteds FROM ^posts AS userid_src WHERE userid~",
),
'downvoteds' => array(
'multiple' => 0,
'formula' => "COALESCE(SUM(downvotes), 0) AS downvoteds FROM ^posts AS userid_src WHERE userid~",
),
);
}
function qa_db_points_update_ifuser($userid, $columns)
/*
Update the userpoints table in the database for $userid and $columns, plus the summary points column.
Set $columns to true for all, empty for none, an array for several, or a single value for one.
This dynamically builds some fairly crazy looking SQL, but it works, and saves repeat calculations.
*/
{
if (qa_to_override(__FUNCTION__)) { $args=func_get_args(); return qa_call_override(__FUNCTION__, $args); }
if (qa_should_update_counts() && isset($userid)) {
require_once QA_INCLUDE_DIR.'qa-app-options.php';
$calculations=qa_db_points_calculations();
if ($columns===true)
$keycolumns=$calculations;
elseif (empty($columns))
$keycolumns=array();
elseif (is_array($columns))
$keycolumns=array_flip($columns);
else
$keycolumns=array($columns => true);
$insertfields='userid, ';
$insertvalues='$, ';
$insertpoints=(int)qa_opt('points_base');
$updates='';
$updatepoints=$insertpoints;
foreach ($calculations as $field => $calculation) {
$multiple=(int)$calculation['multiple'];
if (isset($keycolumns[$field])) {
$insertfields.=$field.', ';
$insertvalues.='@_'.$field.':=(SELECT '.$calculation['formula'].'), ';
$updates.=$field.'=@_'.$field.', ';
$insertpoints.='+('.(int)$multiple.'*@_'.$field.')';
}
$updatepoints.='+('.$multiple.'*'.(isset($keycolumns[$field]) ? '@_' : '').$field.')';
}
$query='INSERT INTO ^userpoints ('.$insertfields.'points) VALUES ('.$insertvalues.$insertpoints.') '.
'ON DUPLICATE KEY UPDATE '.$updates.'points='.$updatepoints.'+bonus';
qa_db_query_raw(str_replace('~', "='".qa_db_escape_string($userid)."'", qa_db_apply_sub($query, array($userid))));
// build like this so that a #, $ or ^ character in the $userid (if external integration) isn't substituted
if (qa_db_insert_on_duplicate_inserted())
qa_db_userpointscount_update();
}
}
function qa_db_points_set_bonus($userid, $bonus)
/*
Set the number of explicit bonus points for $userid to $bonus
*/
{
qa_db_query_sub(
"INSERT INTO ^userpoints (userid, bonus) VALUES ($, #) ON DUPLICATE KEY UPDATE bonus=#",
$userid, $bonus, $bonus
);
}
function qa_db_userpointscount_update()
/*
Update the cached count in the database of the number of rows in the userpoints table
*/
{
if (qa_should_update_counts())
qa_db_query_sub("REPLACE ^options (title, content) SELECT 'cache_userpointscount', COUNT(*) FROM ^userpoints");
}
/*
Omit PHP closing tag to help avoid accidental output
*/