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authorplegall <plg@piwigo.org>2004-11-30 20:26:44 +0000
committerplegall <plg@piwigo.org>2004-11-30 20:26:44 +0000
commit759b1e883999c12f7f59865e4fd8c5aea7e90885 (patch)
treeb8e7e52a65c5277f2cb4cd7890d77ae468e9b633 /admin/include/functions.php
parent514bac91c66f6eaff63380ec544fe5bccfdebed4 (diff)
- update_global_rank new function : far more intelligent update. Take into
account the possiblity to have category tree not in category id ascending order - update global_rank when moving categories among the same parent - new function mass_updates : depending on MySQL version, create a temporary table, make one big insert and one big update by joining 2 tables (4.0.4 or above) or make 1 update per primary key - function update_category improved for representative_picture_id check : only one useful query (equivalent to NOT EXISTS) instead of N (N = number of categories) queries git-svn-id: http://piwigo.org/svn/trunk@625 68402e56-0260-453c-a942-63ccdbb3a9ee
Diffstat (limited to 'admin/include/functions.php')
-rw-r--r--admin/include/functions.php225
1 files changed, 192 insertions, 33 deletions
diff --git a/admin/include/functions.php b/admin/include/functions.php
index c78df307e..9df0303c0 100644
--- a/admin/include/functions.php
+++ b/admin/include/functions.php
@@ -466,66 +466,59 @@ SELECT category_id, COUNT(image_id) AS count, max(date_available) AS date_last
GROUP BY category_id
;';
$result = pwg_query( $query );
+ $datas = array();
while ( $row = mysql_fetch_array( $result ) )
{
array_push($cat_ids, $row['category_id']);
- $query = '
-UPDATE '.CATEGORIES_TABLE.'
- SET date_last = \''.$row['date_last'].'\'
- , nb_images = '.$row['count'].'
- WHERE id = '.$row['category_id'].'
-;';
- pwg_query($query);
+ array_push($datas, array('id' => $row['category_id'],
+ 'date_last' => $row['date_last'],
+ 'count' => $row['count']));
}
+ $fields = array('primary' => array('id'),
+ 'update' => array('date_last', 'count'));
+ mass_updates(CATEGORIES_TABLE, $fields, $datas);
if (count($cat_ids) > 0)
{
+ // find all categories where the setted representative is not possible
$query = '
-SELECT id, representative_picture_id
- FROM '.CATEGORIES_TABLE.'
+SELECT id
+ FROM '.CATEGORIES_TABLE.' LEFT JOIN '.IMAGE_CATEGORY_TABLE.'
+ ON id = category_id AND representative_picture_id = image_id
WHERE representative_picture_id IS NOT NULL
AND id IN ('.implode(',', $cat_ids).')
+ AND category_id IS NULL
;';
$result = pwg_query($query);
while ($row = mysql_fetch_array($result))
{
+ // set a new representative element for this category
$query = '
SELECT image_id
FROM '.IMAGE_CATEGORY_TABLE.'
WHERE category_id = '.$row['id'].'
- AND image_id = '.$row['representative_picture_id'].'
+ ORDER BY RAND()
+ LIMIT 0,1
;';
$sub_result = pwg_query($query);
- if (mysql_num_rows($sub_result) == 0)
+ if (mysql_num_rows($sub_result) > 0)
{
- // set a new representative element for this category
+ list($representative) = mysql_fetch_array($sub_result);
$query = '
-SELECT image_id
- FROM '.IMAGE_CATEGORY_TABLE.'
- WHERE category_id = '.$row['id'].'
- ORDER BY RAND()
- LIMIT 0,1
-;';
- $sub_sub_result = pwg_query($query);
- if (mysql_num_rows($sub_sub_result) > 0)
- {
- list($representative) = mysql_fetch_array(pwg_query($query));
- $query = '
UPDATE '.CATEGORIES_TABLE.'
SET representative_picture_id = '.$representative.'
WHERE id = '.$row['id'].'
;';
- pwg_query($query);
- }
- else
- {
- $query = '
+ pwg_query($query);
+ }
+ else
+ {
+ $query = '
UPDATE '.CATEGORIES_TABLE.'
SET representative_picture_id = NULL
WHERE id = '.$row['id'].'
;';
- pwg_query($query);
- }
+ pwg_query($query);
}
}
}
@@ -790,18 +783,18 @@ function my_error($header, $echo = true)
* inserts multiple lines in a table
*
* @param string table_name
- * @param array dbields
+ * @param array dbfields
* @param array inserts
* @return void
*/
-function mass_inserts($table_name, $dbfields, $inserts)
+function mass_inserts($table_name, $dbfields, $datas)
{
// inserts all found categories
$query = '
INSERT INTO '.$table_name.'
('.implode(',', $dbfields).')
VALUES';
- foreach ($inserts as $insert_id => $insert)
+ foreach ($datas as $insert_id => $insert)
{
$query.= '
';
@@ -832,4 +825,170 @@ INSERT INTO '.$table_name.'
;';
pwg_query($query);
}
+
+/**
+ * updates multiple lines in a table
+ *
+ * @param string table_name
+ * @param array dbfields
+ * @param array datas
+ * @return void
+ */
+function mass_updates($tablename, $dbfields, $datas)
+{
+ // depending on the MySQL version, we use the multi table update or N
+ // update queries
+ $query = 'SELECT VERSION() AS version;';
+ $row = mysql_fetch_array(pwg_query($query));
+ if (version_compare($row['version'],'4.0.4') < 0)
+ {
+ // MySQL is prior to version 4.0.4, multi table update feature is not
+ // available
+ echo 'MySQL is prior to version 4.0.4, multi table update feature is not available<br />';
+ foreach ($datas as $data)
+ {
+ $query = '
+UPDATE '.$tablename.'
+ SET ';
+ foreach ($dbfields['update'] as $num => $key)
+ {
+ if ($num >= 1)
+ {
+ $query.= ",\n ";
+ }
+ $query.= $key.' = ';
+ if (isset($data[$key]))
+ {
+ $query.= '\''.$data[$key].'\'';
+ }
+ else
+ {
+ $query.= 'NULL';
+ }
+ }
+ $query.= '
+ WHERE ';
+ foreach ($dbfields['primary'] as $num => $key)
+ {
+ if ($num > 1)
+ {
+ $query.= ' AND ';
+ }
+ $query.= $key.' = \''.$data[$key].'\'';
+ }
+ $query.= '
+;';
+ pwg_query($query);
+ }
+ }
+ else
+ {
+ // creation of the temporary table
+ $query = '
+DESCRIBE '.$tablename.'
+;';
+ $result = pwg_query($query);
+ $columns = array();
+ $all_fields = array_merge($dbfields['primary'], $dbfields['update']);
+ while ($row = mysql_fetch_array($result))
+ {
+ if (in_array($row['Field'], $all_fields))
+ {
+ $column = $row['Field'];
+ $column.= ' '.$row['Type'];
+ if (!isset($row['Null']) or $row['Null'] == '')
+ {
+ $column.= ' NOT NULL';
+ }
+ if (isset($row['Default']))
+ {
+ $column.= " default '".$row['Default']."'";
+ }
+ array_push($columns, $column);
+ }
+ }
+ $query = '
+CREATE TEMPORARY TABLE '.$tablename.'_temporary
+(
+'.implode(",\n", $columns).',
+PRIMARY KEY (id)
+)
+;';
+ pwg_query($query);
+ mass_inserts($tablename, $all_fields, $datas);
+ // update of images table by joining with temporary table
+ $query = '
+UPDATE '.$tablename.' AS t1, '.$tablename.'_temporary AS t2
+ SET '.implode("\n , ",
+ array_map(
+ create_function('$s', 'return "t1.$s = t2.$s";')
+ , $dbfields['update'])).'
+ WHERE '.implode("\n AND ",
+ array_map(
+ create_function('$s', 'return "t1.$s = t2.$s";')
+ , $dbfields['primary'])).'
+;';
+ pwg_query($query);
+ $query = '
+DROP TABLE '.$tablename.'_temporary
+;';
+ pwg_query($query);
+ }
+}
+
+/**
+ * updates the global_rank of categories under the given id_uppercat
+ *
+ * @param int id_uppercat
+ * @return void
+ */
+function update_global_rank($id_uppercat = 'all')
+{
+ $query = '
+SELECT id,rank
+ FROM '.CATEGORIES_TABLE.'
+;';
+ $result = pwg_query($query);
+ $ranks_array = array();
+ while ($row = mysql_fetch_array($result))
+ {
+ $ranks_array[$row['id']] = $row['rank'];
+ }
+
+ // which categories to update ?
+ $uppercats_array = array();
+
+ $query = '
+SELECT id,uppercats
+ FROM '.CATEGORIES_TABLE;
+ if (is_numeric($id_uppercat))
+ {
+ $query.= '
+ WHERE uppercats REGEXP \'(^|,)'.$id_uppercat.'(,|$)\'
+ AND id != '.$id_uppercat.'
+';
+ }
+ $query.= '
+;';
+ $result = pwg_query($query);
+ while ($row = mysql_fetch_array($result))
+ {
+ $uppercats_array[$row['id']] = $row['uppercats'];
+ }
+
+ $datas = array();
+ foreach ($uppercats_array as $id => $uppercats)
+ {
+ $data = array();
+ $data['id'] = $id;
+ $global_rank = preg_replace('/(\d+)/e',
+ "\$ranks_array['$1']",
+ str_replace(',', '.', $uppercats));
+ $data['global_rank'] = $global_rank;
+ array_push($datas, $data);
+ }
+
+ $fields = array('primary' => array('id'), 'update' => array('global_rank'));
+ mass_updates(CATEGORIES_TABLE, $fields, $datas);
+}
?>