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[ticket/10653] Add ability to count table rows to database abstraction layer.

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PHPBB3-10653
This commit is contained in:
Andreas Fischer 2012-02-18 19:29:32 +01:00
parent 97cf433dea
commit f9953fc339
4 changed files with 177 additions and 44 deletions
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35
phpBB/includes/db/dbal.php
View file

@ -900,6 +900,41 @@ class dbal
return true;
}
/**
* Gets the estimated number of rows in a specified table.
*
* @param string $table_name Table name
*
* @return string Number of rows in $table_name.
* Prefixed with ~ if estimated (otherwise exact).
*
* @access public
*/
function get_estimated_row_count($table_name)
{
return $this->get_row_count($table_name);
}
/**
* Gets the exact number of rows in a specified table.
*
* @param string $table_name Table name
*
* @return string Exact number of rows in $table_name.
*
* @access public
*/
function get_row_count($table_name)
{
$sql = 'SELECT COUNT(*) AS rows_total
FROM ' . $this->sql_escape($table_name);
$result = $this->sql_query($sql);
$rows_total = $this->sql_fetchfield('rows_total');
$this->sql_freeresult($result);
return $rows_total;
}
}
/**

70
phpBB/includes/db/mysql.php
View file

@ -318,6 +318,76 @@ class dbal_mysql extends dbal
return @mysql_real_escape_string($msg, $this->db_connect_id);
}
/**
* Gets the estimated number of rows in a specified table.
*
* @param string $table_name Table name
*
* @return string Number of rows in $table_name.
* Prefixed with ~ if estimated (otherwise exact).
*
* @access public
*/
function get_estimated_row_count($table_name)
{
$table_status = $this->get_table_status($table_name);
if (isset($table_status['Engine']))
{
if ($table_status['Engine'] === 'MyISAM')
{
return $table_status['Rows'];
}
else if ($table_status['Engine'] === 'InnoDB' && $table_status['Rows'] > 100000)
{
return '~' . $table_status['Rows'];
}
}
return $this->get_row_count($table_name);
}
/**
* Gets the exact number of rows in a specified table.
*
* @param string $table_name Table name
*
* @return string Exact number of rows in $table_name.
*
* @access public
*/
function get_row_count($table_name)
{
$table_status = $this->get_table_status($table_name);
if (isset($table_status['Engine']) && $table_status['Engine'] === 'MyISAM')
{
return $table_status['Rows'];
}
return parent::get_row_count($table_name);
}
/**
* Gets some information about the specified table.
*
* @param string $table_name Table name
*
* @return array
*
* @access protected
*/
function get_table_status($table_name)
{
$sql = "SHOW TABLE STATUS
LIKE '" . $this->sql_escape($table_name) . "'";
$result = $this->sql_query($sql);
$table_status = $this->sql_fetchrow($result);
$this->sql_freeresult($result);
return $table_status;
}
/**
* Build LIKE expression
* @access private

70
phpBB/includes/db/mysqli.php
View file

@ -315,6 +315,76 @@ class dbal_mysqli extends dbal
return @mysqli_real_escape_string($this->db_connect_id, $msg);
}
/**
* Gets the estimated number of rows in a specified table.
*
* @param string $table_name Table name
*
* @return string Number of rows in $table_name.
* Prefixed with ~ if estimated (otherwise exact).
*
* @access public
*/
function get_estimated_row_count($table_name)
{
$table_status = $this->get_table_status($table_name);
if (isset($table_status['Engine']))
{
if ($table_status['Engine'] === 'MyISAM')
{
return $table_status['Rows'];
}
else if ($table_status['Engine'] === 'InnoDB' && $table_status['Rows'] > 100000)
{
return '~' . $table_status['Rows'];
}
}
return $this->get_row_count($table_name);
}
/**
* Gets the exact number of rows in a specified table.
*
* @param string $table_name Table name
*
* @return string Exact number of rows in $table_name.
*
* @access public
*/
function get_row_count($table_name)
{
$table_status = $this->get_table_status($table_name);
if (isset($table_status['Engine']) && $table_status['Engine'] === 'MyISAM')
{
return $table_status['Rows'];
}
return parent::get_row_count($table_name);
}
/**
* Gets some information about the specified table.
*
* @param string $table_name Table name
*
* @return array
*
* @access protected
*/
function get_table_status($table_name)
{
$sql = "SHOW TABLE STATUS
LIKE '" . $this->sql_escape($table_name) . "'";
$result = $this->sql_query($sql);
$table_status = $this->sql_fetchrow($result);
$this->sql_freeresult($result);
return $table_status;
}
/**
* Build LIKE expression
* @access private

46
phpBB/includes/search/fulltext_native.php
View file

@ -1458,53 +1458,11 @@ class fulltext_native extends search_backend
}
function get_stats()
{
$this->stats['total_words'] = $this->get_table_row_count(SEARCH_WORDLIST_TABLE);
$this->stats['total_matches'] = $this->get_table_row_count(SEARCH_WORDMATCH_TABLE);
}
/**
* Gets statistics for a specific database table.
*
* @param string $table_name Table name
*
* @return string Row count. Prefixed with ~ if estimated.
*
* @access protected
*/
function get_table_row_count($table_name)
{
global $db;
if (stripos($db->sql_layer, 'mysql') === 0)
{
$sql = "SHOW TABLE STATUS
LIKE '" . $table_name . "'";
$result = $db->sql_query($sql);
$table_status = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
if (isset($table_status['Engine']))
{
if ($table_status['Engine'] === 'MyISAM')
{
return $table_status['Rows'];
}
else if ($table_status['Engine'] === 'InnoDB' && $table_status['Rows'] > 100000)
{
return '~' . $table_status['Rows'];
}
}
}
// Get exact row count by actually counting rows
$sql = 'SELECT COUNT(*) AS rows_total
FROM ' . $table_name;
$result = $db->sql_query($sql);
$rows_total = $db->sql_fetchfield('rows_total');
$db->sql_freeresult($result);
return $rows_total;
$this->stats['total_words'] = $db->get_estimated_row_count(SEARCH_WORDLIST_TABLE);
$this->stats['total_matches'] = $db->get_estimated_row_count(SEARCH_WORDMATCH_TABLE);
}
/**