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<?php
/**
* PostgreSQL 8.2 support
*
* $Id: Postgres82.php,v 1.10 2007/12/28 16:21:25 ioguix Exp $
*/
include_once('./classes/database/Postgres81.php');
class Postgres82 extends Postgres81 {
var $major_version = 8.2;
// Array of allowed index types
var $typIndexes = array('BTREE', 'RTREE', 'GIST', 'GIN', 'HASH');
// Last oid assigned to a system object
var $_lastSystemOID = 17231;
// List of all legal privileges that can be applied to different types
// of objects.
var $privlist = array(
'table' => array('SELECT', 'INSERT', 'UPDATE', 'DELETE', 'RULE', 'REFERENCES', 'TRIGGER', 'ALL PRIVILEGES'),
'view' => array('SELECT', 'INSERT', 'UPDATE', 'DELETE', 'RULE', 'REFERENCES', 'TRIGGER', 'ALL PRIVILEGES'),
'sequence' => array('SELECT', 'UPDATE', 'ALL PRIVILEGES'),
'database' => array('CREATE', 'TEMPORARY', 'CONNECT', 'ALL PRIVILEGES'),
'function' => array('EXECUTE', 'ALL PRIVILEGES'),
'language' => array('USAGE', 'ALL PRIVILEGES'),
'schema' => array('CREATE', 'USAGE', 'ALL PRIVILEGES'),
'tablespace' => array('CREATE', 'ALL PRIVILEGES')
);
// List of characters in acl lists and the privileges they
// refer to.
var $privmap = array(
'r' => 'SELECT',
'w' => 'UPDATE',
'a' => 'INSERT',
'd' => 'DELETE',
'R' => 'RULE',
'x' => 'REFERENCES',
't' => 'TRIGGER',
'X' => 'EXECUTE',
'U' => 'USAGE',
'C' => 'CREATE',
'T' => 'TEMPORARY',
'c' => 'CONNECT'
);
/**
* Constructor
* @param $conn The database connection
*/
function Postgres82($conn) {
$this->Postgres81($conn);
}
// Help functions
function getHelpPages() {
include_once('./help/PostgresDoc82.php');
return $this->help_page;
}
// Database functions
/**
* Return all database available on the server
* @return A list of databases, sorted alphabetically
*/
function getDatabases($currentdatabase = NULL) {
global $conf, $misc;
$server_info = $misc->getServerInfo();
if (isset($conf['owned_only']) && $conf['owned_only'] && !$this->isSuperUser($server_info['username'])) {
$username = $server_info['username'];
$this->clean($username);
$clause = " AND pr.rolname='{$username}'";
}
else $clause = '';
if ($currentdatabase != NULL)
$orderby = "ORDER BY pdb.datname = '{$currentdatabase}' DESC, pdb.datname";
else
$orderby = "ORDER BY pdb.datname";
if (!$conf['show_system'])
$where = ' AND NOT pdb.datistemplate';
else
$where = ' AND pdb.datallowconn';
$sql = "SELECT pdb.datname AS datname, pr.rolname AS datowner, pg_encoding_to_char(encoding) AS datencoding,
(SELECT description FROM pg_catalog.pg_shdescription pd WHERE pdb.oid=pd.objoid) AS datcomment,
(SELECT spcname FROM pg_catalog.pg_tablespace pt WHERE pt.oid=pdb.dattablespace) AS tablespace,
CASE WHEN pg_catalog.has_database_privilege(current_user, pdb.oid, 'CONNECT')
THEN pg_catalog.pg_database_size(pdb.oid)
ELSE NULL END as dbsize
FROM pg_catalog.pg_database pdb LEFT JOIN pg_catalog.pg_roles pr ON (pdb.datdba = pr.oid)
WHERE true
{$where}
{$clause}
{$orderby}";
return $this->selectSet($sql);
}
/**
* Alters a database
* the multiple return vals are for postgres 8+ which support more functionality in alter database
* @param $dbName The name of the database
* @param $newName new name for the database
* @param $newOwner The new owner for the database
* @return 0 success
* @return -1 transaction error
* @return -2 owner error
* @return -3 rename error
* @return -4 comment error
*/
function alterDatabase($dbName, $newName, $newOwner = '', $comment = '')
{
$this->clean($dbName);
$this->clean($newName);
$this->clean($newOwner);
$this->clean($comment);
$status = $this->beginTransaction();
if ($status != 0) {
$this->rollbackTransaction();
return -1;
}
if ($dbName != $newName) {
$status = $this->alterDatabaseRename($dbName, $newName);
if ($status != 0) {
$this->rollbackTransaction();
return -3;
}
}
$status = $this->alterDatabaseOwner($newName, $newOwner);
if ($status != 0) {
$this->rollbackTransaction();
return -2;
}
if (trim($comment) != '' ) {
$status = $this->setComment('DATABASE', $dbName, '', $comment);
if ($status != 0) {
$this->rollbackTransaction();
return -4;
}
}
return $this->endTransaction();
}
/**
* Return the database comment of a db from the shared description table
* @param string $database the name of the database to get the comment for
* @return recordset of the db comment info
*/
function getDatabaseComment($database) {
$this->clean($database);
$sql = "SELECT description FROM pg_catalog.pg_database JOIN pg_catalog.pg_shdescription ON (oid=objoid) WHERE pg_database.datname = '{$database}' ";
return $this->selectSet($sql);
}
// Tablespace functions
/**
* Retrieves information for all tablespaces
* @param $all Include all tablespaces (necessary when moving objects back to the default space)
* @return A recordset
*/
function getTablespaces($all = false) {
global $conf;
$sql = "SELECT spcname, pg_catalog.pg_get_userbyid(spcowner) AS spcowner, spclocation,
(SELECT description FROM pg_catalog.pg_shdescription pd WHERE pg_tablespace.oid=pd.objoid) AS spccomment
FROM pg_catalog.pg_tablespace";
if (!$conf['show_system'] && !$all) {
$sql .= " WHERE spcname NOT LIKE 'pg\\\\_%'";
}
$sql .= " ORDER BY spcname";
return $this->selectSet($sql);
}
/**
* Retrieves a tablespace's information
* @return A recordset
*/
function getTablespace($spcname) {
$this->clean($spcname);
$sql = "SELECT spcname, pg_catalog.pg_get_userbyid(spcowner) AS spcowner, spclocation,
(SELECT description FROM pg_catalog.pg_shdescription pd WHERE pg_tablespace.oid=pd.objoid) AS spccomment
FROM pg_catalog.pg_tablespace WHERE spcname='{$spcname}'";
return $this->selectSet($sql);
}
// Constraints methods
/**
* Returns a list of all constraints on a table,
* including constraint name, definition, related col and referenced namespace,
* table and col if needed
* @param $table the table where we are looking for fk
* @return a recordset
*/
function getConstraintsWithFields($table) {
global $data;
$data->clean($table);
// get the max number of col used in a constraint for the table
$sql = "SELECT DISTINCT
max(SUBSTRING(array_dims(c.conkey) FROM E'^\\\[.*:(.*)\\\]$')) as nb
FROM
pg_catalog.pg_constraint AS c
JOIN pg_catalog.pg_class AS r ON (c.conrelid = r.oid)
JOIN pg_catalog.pg_namespace AS ns ON r.relnamespace=ns.oid
WHERE
r.relname = '$table' AND ns.nspname='". $this->_schema ."'";
$rs = $this->selectSet($sql);
if ($rs->EOF) $max_col = 0;
else $max_col = $rs->fields['nb'];
$sql = '
SELECT
c.contype, c.conname, pg_catalog.pg_get_constraintdef(c.oid, true) AS consrc,
ns1.nspname as p_schema, r1.relname as p_table, ns2.nspname as f_schema,
r2.relname as f_table, f1.attname as p_field, f2.attname as f_field,
pg_catalog.obj_description(c.oid, \'pg_constraint\') AS constcomment
FROM
pg_catalog.pg_constraint AS c
JOIN pg_catalog.pg_class AS r1 ON (c.conrelid=r1.oid)
JOIN pg_catalog.pg_attribute AS f1 ON (f1.attrelid=r1.oid AND (f1.attnum=c.conkey[1]';
for ($i = 2; $i <= $rs->fields['nb']; $i++) {
$sql.= " OR f1.attnum=c.conkey[$i]";
}
$sql.= '))
JOIN pg_catalog.pg_namespace AS ns1 ON r1.relnamespace=ns1.oid
LEFT JOIN (
pg_catalog.pg_class AS r2 JOIN pg_catalog.pg_namespace AS ns2 ON (r2.relnamespace=ns2.oid)
) ON (c.confrelid=r2.oid)
LEFT JOIN pg_catalog.pg_attribute AS f2 ON
(f2.attrelid=r2.oid AND ((c.confkey[1]=f2.attnum AND c.conkey[1]=f1.attnum)';
for ($i = 2; $i <= $rs->fields['nb']; $i++)
$sql.= "OR (c.confkey[$i]=f2.attnum AND c.conkey[$i]=f1.attnum)";
$sql .= sprintf("))
WHERE
r1.relname = '%s' AND ns1.nspname='%s'
ORDER BY 1", $table, $this->_schema);
return $this->selectSet($sql);
}
// Capabilities
function hasSharedComments() {return true;}
function hasCreateTableLikeWithConstraints() {return true;}
}
?>
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