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- extended PMA_DBI_get_databases_full() to allow limiting and sorting

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- added new function PMA_DBI_get_databases_count()
This commit is contained in:
Sebastian Mendel
2006-04-13 13:49:28 +00:00
parent a79dbc3762
commit 64941d2881
2 changed files with 74 additions and 5 deletions
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3
ChangeLog
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@@ -6,6 +6,9 @@ $Id$
$Source$
2006-04-12 Sebastian Mendel <cybot_tm@users.sourceforge.net>
* libraries/database_interface.lib.php:
- extended PMA_DBI_get_databases_full() to allow limiting and sorting
- added new function PMA_DBI_get_databases_count()
* libraries/config.default.php:
added new paramter to limit maximum displayed databases
* sql.php:

76
libraries/database_interface.lib.php
View File

@@ -389,20 +389,57 @@ function PMA_DBI_get_tables_full($database, $table = false,
}
}
/**
* returns count of databases for current server
*
* @param string $database databases to count
* @param resource $link mysql db link
*/
function PMA_DBI_get_databases_count($database = null, $link = null)
{
return count(PMA_DBI_get_dblist($link));
}
/**
* returns array with databases containing extended infos about them
*
* @param string $databases database
* @param boolean $force_stats retrieve stats also for MySQL < 5
* @param resource $link mysql link
* @param string $sort_by collumn to order by
* @param string $sort_order ASC or DESC
* @param integer $limit_offset starting offset for LIMIT
* @param bool|int $limit_count row count for LIMIT or true for $GLOBALS['cfg']['MaxDbList']
* @return array $databases
*/
function PMA_DBI_get_databases_full( $database = null, $force_stats = false, $link = null ) {
function PMA_DBI_get_databases_full($database = null, $force_stats = false,
$link = null, $sort_by = 'SCHEMA_NAME', $sort_order = 'ASC',
$limit_offset = 0, $limit_count = false)
{
if (true === $limit_count) {
$limit_count = $GLOBALS['cfg']['MaxDbList'];
}
// initialize to avoid errors when there are no databases
$databases = array();
if ( PMA_MYSQL_INT_VERSION >= 50002 ) {
$apply_limit_and_order_manual = true;
if (PMA_MYSQL_INT_VERSION >= 50002) {
/**
* if $GLOBALS['cfg']['NaturalOrder'] is enabled, we cannot use LIMIT
* cause MySQL does not support natural ordering, we have to do it afterward
*/
if ($GLOBALS['cfg']['NaturalOrder']) {
$limit = '';
} else {
if ($limit_count) {
$limit = ' LIMIT ' . $limit_count . ' OFFSET ' . $limit_offset;
}
$apply_limit_and_order_manual = false;
}
// get table information from information_schema
if ( $database ) {
$sql_where_schema = 'WHERE `SCHEMA_NAME` LIKE \''
@@ -435,7 +472,9 @@ function PMA_DBI_get_databases_full( $database = null, $force_stats = false, $li
ON `information_schema`.`TABLES`.`TABLE_SCHEMA`
= `information_schema`.`SCHEMATA`.`SCHEMA_NAME`
' . $sql_where_schema . '
GROUP BY `information_schema`.`SCHEMATA`.`SCHEMA_NAME`';
GROUP BY `information_schema`.`SCHEMATA`.`SCHEMA_NAME`
ORDER BY ' . PMA_backquote($sort_by) . ' ' . $sort_order
. $limit;
$databases = PMA_DBI_fetch_result( $sql, 'SCHEMA_NAME', null, $link );
unset( $sql_where_schema, $sql );
} else {
@@ -481,8 +520,35 @@ function PMA_DBI_get_databases_full( $database = null, $force_stats = false, $li
}
}
if ( $GLOBALS['cfg']['NaturalOrder'] ) {
uksort( $databases, 'strnatcasecmp' );
/**
* apply limit and order manually now
* (caused by older MySQL < 5 or $GLOBALS['cfg']['NaturalOrder'])
*/
if ($apply_limit_and_order_manual) {
/**
* first apply ordering
*/
if ($GLOBALS['cfg']['NaturalOrder']) {
$sorter = 'strnatcasecmp';
} else {
$sorter = 'strcasecmp';
}
// produces f.e.:
// return -1 * strnatcasecmp($a["SCHEMA_TABLES"], $b["SCHEMA_TABLES"])
$sort_function = '
return ' . ($sort_order == 'asc' ? 1 : -1) . ' * ' . $sorter . '($a["' . $sort_by . '"], $b["' . $sort_by . '"]);
';
usort($databases, create_function('$a, $b', $sort_function));
/**
* now apply limit
*/
if ($limit_count) {
$databases = array_slice($databases, $limit_offset, $limit_count);
}
}
return $databases;