2019-09-06 23:53:10 +08:00

90 lines
1.8 KiB
PHP
Executable File

<?php
class LtDbSqlAdapterMysql implements LtDbSqlAdapter
{
public function setCharset($charset)
{
return "SET NAMES " . str_replace('-', '', $charset);
}
public function setSchema($schema)
{
return "USE $schema";
}
public function showSchemas($database)
{
return "SHOW DATABASES";
}
public function showTables($schema)
{
return "SHOW TABLES";
}
public function showFields($table)
{
return "DESCRIBE $table";
}
public function beginTransaction()
{
return "START TRANSACTION";
}
public function commit()
{
return "COMMIT";
}
public function rollBack()
{
return "ROLLBACK";
}
public function limit($limit, $offset)
{
return " LIMIT $limit OFFSET $offset";
}
public function getSchemas($queryResult)
{
}
public function getTables($queryResult)
{
}
public function getFields($queryResult)
{
foreach ($queryResult as $key => $value)
{
$fields[$value['Field']]['name'] = $value['Field'];
$fields[$value['Field']]['type'] = $value['Type'];
/*
* not null is NO or empty, null is YES
*/
$fields[$value['Field']]['notnull'] = (bool) ($value['Null'] != 'YES');
$fields[$value['Field']]['default'] = $value['Default'];
$fields[$value['Field']]['primary'] = (strtolower($value['Key']) == 'pri');
}
return $fields;
}
public function detectQueryType($sql)
{
if (preg_match("/^\s*SELECT|^\s*EXPLAIN|^\s*SHOW|^\s*DESCRIBE/i", $sql))
{
$ret = 'SELECT';
}
else if (preg_match("/^\s*INSERT/i", $sql))
{
$ret = 'INSERT';
}
else if (preg_match("/^\s*UPDATE|^\s*DELETE|^\s*REPLACE/i", $sql))
{
$ret = 'CHANGE_ROWS';
}
else if (preg_match("/^\s*USE|^\s*SET/i", $sql))
{
$ret = 'SET_SESSION_VAR';
}
else
{
$ret = 'OTHER';
}
return $ret;
}
}