OpenSQLManager/sys/db/drivers/pgsql.php
Timothy Warren 13b3f36d02 Moar tabs!
And better schema retreiving method for Postgres
2012-04-06 16:36:50 -04:00

217 lines
4.5 KiB
PHP

<?php
/**
* OpenSQLManager
*
* Free Database manager for Open Source Databases
*
* @author Timothy J. Warren
* @copyright Copyright (c) 2012
* @link https://github.com/aviat4ion/OpenSQLManager
* @license http://philsturgeon.co.uk/code/dbad-license
*/
// --------------------------------------------------------------------------
/**
* PostgreSQL specifc class
*
* @extends DB_PDO
*/
class pgSQL extends DB_PDO {
/**
* Connect to a PosgreSQL database
*
* @param string $dsn
* @param string $username=null
* @param string $password=null
* @param array $options=array()
*/
public function __construct($dsn, $username=null, $password=null, $options=array())
{
parent::__construct("pgsql:$dsn", $username, $password, $options);
//Get db manip class
$class = __CLASS__.'_sql';
$this->sql = new $class;
}
// --------------------------------------------------------------------------
/**
* Empty a table
*
* @param string $table
*/
public function truncate($table)
{
$sql = 'TRUNCATE "' . $table . '"';
$this->query($sql);
}
// --------------------------------------------------------------------------
/**
* Get list of databases for the current connection
*
* @return array
*/
public function get_dbs()
{
$sql = <<<SQL
SELECT "datname" FROM "pg_database"
WHERE "datname" NOT IN ('template0','template1')
ORDER BY "datname" ASC
SQL;
$res = $this->query($sql);
return db_filter($res->fetchAll(PDO::FETCH_ASSOC), 'datname');
}
// --------------------------------------------------------------------------
/**
* Get the list of tables for the current db
*
* @return array
*/
public function get_tables()
{
$sql = <<<SQL
SELECT "tablename" FROM "pg_tables"
WHERE "tablename" NOT LIKE 'pg_%'
AND "tablename" NOT LIKE 'sql_%'
ORDER BY "tablename" ASC
SQL;
$res = $this->query($sql);
return db_filter($res->fetchAll(PDO::FETCH_ASSOC), 'tablename');
}
// --------------------------------------------------------------------------
/**
* Get the list of system tables
*
* @return array
*/
public function get_system_tables()
{
$sql = <<<SQL
SELECT "tablename" FROM "pg_tables"
WHERE "tablename" LIKE 'pg\_%'
OR "tablename" LIKE 'sql\%'
SQL;
$res = $this->query($sql);
return db_filter($res->fetchAll(PDO::FETCH_ASSOC), 'tablename');
}
// --------------------------------------------------------------------------
/**
* Get a list of schemas, either for the current connection, or
* for the current datbase, if specified.
*
* @return array
*/
public function get_schemas()
{
$sql = <<<SQL
SELECT DISTINCT "schemaname" FROM "pg_tables"
WHERE "schemaname" NOT LIKE 'pg\_%'
AND "schemaname" != 'information_schema'
SQL;
$res = $this->query($sql);
$schemas = $res->fetchAll(PDO::FETCH_ASSOC);
return db_filter($schemas, 'schemaname');
}
// --------------------------------------------------------------------------
/**
* Get a list of views for the current db
*
* @return array
*/
public function get_views()
{
$sql = <<<SQL
SELECT "viewname" FROM "pg_views"
WHERE "schemaname" NOT IN
('pg_catalog', 'information_schema')
AND "viewname" !~ '^pg_'
ORDER BY "viewname" ASC
SQL;
$res = $this->query($sql);
return db_filter($res->fetchAll(PDO::FETCH_ASSOC), 'viewname');
}
// --------------------------------------------------------------------------
/**
* Get a list of sequences for the current db
*
* @return array
*/
public function get_sequences()
{
$sql = <<<SQL
SELECT "c"."relname"
FROM "pg_class" "c"
WHERE "c"."relkind" = 'S'
ORDER BY "relname" ASC
SQL;
$res = $this->query($sql);
return db_filter($res->fetchAll(PDO::FETCH_ASSOC), 'relname');
}
// --------------------------------------------------------------------------
/**
* Return the number of rows returned for a SELECT query
*
* @return int
*/
public function num_rows()
{
return (isset($this->statement)) ? $this->statement->rowCount : FALSE;
}
// --------------------------------------------------------------------------
/**
* Create an SQL backup file for the current database's structure
*
* @return string
*/
public function backup_structure()
{
// @todo Implement Backup function
return '';
}
// --------------------------------------------------------------------------
/**
* Create an SQL backup file for the current database's data
*
* @return string
*/
public function backup_data()
{
// @todo Implement Backup function
return '';
}
}
//End of pgsql.php