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<?php
class LayerMYSQL extends AbstractLayer
{
# Generic
public static function protect($value,$alias=NULL)
{
return '`'.str_replace('.','`.`',$value).'`'.($alias?' `'.$alias.'`':'');
}
# saveloadlist
public static function Keywords($table,$keyword='')
{
$req = '
SELECT
';
if($keyword)
$req .= ' '.self::protect('data').' ';
else
$req .= ' '.self::protect('keyword').' ';
$req .= '
FROM '.self::protect($table).'
';
if($keyword)
$req .= ' WHERE '.self::protect('keyword').' = ? ';
else
$req .= ' ORDER BY '.self::protect('dt').' DESC ';
$q = self::$pdo->prepare($req);
if($keyword)
$q->bindValue($keyword,'string');
return $q->execute();
}
public static function KeywordsInsert($table,$keyword,$data)
{
$req = '
INSERT INTO '.self::protect($table).'
('.self::protect('keyword').', '.self::protect('data').')
VALUES (?, ?)
';
return self::$pdo->prepare($req)->bindValue($keyword,'string')->bindValue($data,'string')->execute();
}
public static function KeywordsUpdate($table,$keyword,$data)
{
$req = '
UPDATE '.self::protect($table).'
SET '.self::protect('data').' = ?
WHERE '.self::protect('keyword').' = ?
';
return self::$pdo->prepare($req)->bindValue($data,'string')->bindValue($keyword,'string')->execute();
}
# datatypes
public static function DatatypesFile()
{
return dirname(__FILE__).'/../../db/mysql/datatypes.xml';
}
# model
public static $schema = NULL;
public static function Tables()
{
if(is_null(self::$schema))
self::$schema = BackendPhpPdo::req('database');
if(is_null(self::$schema))
self::$schema = 'information_schema';
$req = '
SELECT
'.self::protect('TABLE_NAME').' as '.self::protect('name').',
'.self::protect('TABLE_COMMENT').' as '.self::protect('comment').'
FROM '.self::protect('TABLES').'
WHERE
'.self::protect('TABLE_SCHEMA').' = ?
';
return self::$pdo->prepare($req)->bindValue(self::$schema,'string')->execute()->fetchAll();
}
private static $columns = array();
public static function Columns($table)
{
if(isset(self::$columns[$table['name']]))
return self::$columns[$table['name']];
if(!empty(self::$columns))
return array();
$req = '
SELECT
'.self::protect('TABLE_NAME').' as '.self::protect('table').',
'.self::protect('COLUMN_NAME').' as '.self::protect('name').',
'.self::protect('COLUMN_TYPE').' as '.self::protect('type').',
'.self::protect('IS_NULLABLE').' as '.self::protect('null').',
'.self::protect('COLUMN_DEFAULT').' as '.self::protect('default').',
'.self::protect('COLUMN_COMMENT').' as '.self::protect('comment').',
'.self::protect('EXTRA').' as '.self::protect('autoincrement').'
FROM '.self::protect('COLUMNS').'
WHERE
'.self::protect('TABLE_SCHEMA').' = ?
';
$columns = self::$pdo->prepare($req)->bindValue(self::$schema,'string')->execute()->fetchAll();
foreach($columns as $k=>$column)
{
$column['type'] = strtoupper($column['type']);
$column['null'] = ($column['null'] == 'YES' ? '1' : '0');
$column['default'] = ($column['default'] == 'NULL' ? '' : $column['default']);
$column['autoincrement'] = preg_match('/auto_increment/i',$column['autoincrement']) ? '1' : '0';
self::$columns[$column['table']][] = $column;
}
return self::$columns[$table['name']];
}
private static $relations = array();
public static function Relations($table,$column)
{
if(isset(self::$relations[$table['name']][$column['name']]))
return self::$relations[$table['name']][$column['name']];
if(!empty(self::$relations))
return array();
$req = '
SELECT
'.self::protect('c.TABLE_NAME').' as '.self::protect('table_src').',
'.self::protect('k.COLUMN_NAME').' as '.self::protect('column_src').',
'.self::protect('REFERENCED_TABLE_NAME').' as '.self::protect('table').',
'.self::protect('REFERENCED_COLUMN_NAME').' as '.self::protect('column').'
FROM '.self::protect('KEY_COLUMN_USAGE','k').'
LEFT JOIN '.self::protect('TABLE_CONSTRAINTS','c').'
ON '.self::protect('k.CONSTRAINT_NAME').' = '.self::protect('c.CONSTRAINT_NAME').'
WHERE
'.self::protect('c.TABLE_SCHEMA').' = ?
';
$relations = self::$pdo->prepare($req)->bindValue(self::$schema,'string')->execute()->fetchAll();
foreach($relations as $relation)
self::$relations[$relation['table_src']][$relation['column_src']][] = $relation;
if(isset(self::$relations[$table['name']][$column['name']]))
return self::$relations[$table['name']][$column['name']];
return array();
}
private static $keys = array();
public static function Keys($table)
{
if(isset(self::$keys[$table['name']]))
return self::$keys[$table['name']];
if(!empty(self::$keys))
return array();
$req = '
SELECT
'.self::protect('TABLE_NAME').' as '.self::protect('table').',
'.self::protect('INDEX_NAME').' as '.self::protect('name').',
'.self::protect('INDEX_TYPE').' as '.self::protect('type').',
'.self::protect('COLUMN_NAME').' as '.self::protect('column').',
'.self::protect('NON_UNIQUE').' as '.self::protect('non_unique').'
FROM '.self::protect('STATISTICS').'
WHERE
'.self::protect('TABLE_SCHEMA').' = ?
ORDER BY '.self::protect('SEQ_IN_INDEX').'
';
$indexes = self::$pdo->prepare($req)->bindValue(self::$schema,'string')->execute()->fetchAll();
$keys = array();
foreach($indexes as $index)
{
if($index['type'] != 'FULLTEXT')
$index['type'] = 'INDEX';
if($index['non_unique'] == '0')
$index['type'] = 'UNIQUE';
if($index['name'] == 'PRIMARY')
$index['type'] = 'PRIMARY';
self::$keys[$index['table']][$index['name']]['type'] = $index['type'];
self::$keys[$index['table']][$index['name']]['columns'][] = $index['column'];
}
if (isset(self::$keys[$table['name']])) {
return self::$keys[$table['name']];
} else {
return array();
}
}
}
?>
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