OpenSQLManager/sys/db/drivers/pgsql.php

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