-<?php

-/**

-*

-* @package dbal

-* @version $Id$

-* @copyright (c) 2005 phpBB Group

-* @license http://opensource.org/licenses/gpl-license.php GNU Public License

-*

-*/

-

-/**

-* @ignore

-*/

-if (!defined('IN_PHPBB'))

-{

- exit;

-}

-

-/**

-* PostgreSQL Database Abstraction Layer

-* Minimum Requirement: 8.2+

-* @package dbal

-*/

-class phpbb_dbal_postgres extends phpbb_dbal

-{

- /**

- * @var string Database type. No distinction between versions or used extensions.

- */

- public $dbms_type = 'postgres';

-

- /**

- * @var array Database type map, column layout information

- */

- public $dbms_type_map = array(

- 'INT:' => 'INT4',

- 'BINT' => 'INT8',

- 'UINT' => 'INT4', // unsigned

- 'UINT:' => 'INT4', // unsigned

- 'USINT' => 'INT2', // unsigned

- 'BOOL' => 'INT2', // unsigned

- 'TINT:' => 'INT2',

- 'VCHAR' => 'varchar(255)',

- 'VCHAR:' => 'varchar(%d)',

- 'CHAR:' => 'char(%d)',

- 'XSTEXT' => 'varchar(1000)',

- 'STEXT' => 'varchar(3000)',

- 'TEXT' => 'varchar(8000)',

- 'MTEXT' => 'TEXT',

- 'XSTEXT_UNI'=> 'varchar(100)',

- 'STEXT_UNI' => 'varchar(255)',

- 'TEXT_UNI' => 'varchar(4000)',

- 'MTEXT_UNI' => 'TEXT',

- 'TIMESTAMP' => 'INT4', // unsigned

- 'DECIMAL' => 'decimal(5,2)',

- 'DECIMAL:' => 'decimal(%d,2)',

- 'PDECIMAL' => 'decimal(6,3)',

- 'PDECIMAL:' => 'decimal(%d,3)',

- 'VCHAR_UNI' => 'varchar(255)',

- 'VCHAR_UNI:'=> 'varchar(%d)',

- 'VARBINARY' => 'bytea',

- );

-

- /**

- * @var string PostgreSQL schema (if supplied with $database -> database.schema)

- */

- public $schema = '';

-

- /**

- * Connect to server. See {@link phpbb_dbal::sql_connect() sql_connect()} for details.

- */

- public function sql_connect($server, $user, $password, $database, $port = false, $persistency = false , $new_link = false)

- {

- $this->persistency = $persistency;

- $this->user = $user;

- $this->server = $server;

- $this->dbname = $database;

- $this->port = $port;

-

- $connect_string = '';

-

- if ($this->user)

- {

- $connect_string .= 'user=' . $this->user . ' ';

- }

-

- if ($password)

- {

- $connect_string .= 'password=' . $password . ' ';

- }

-

- if ($this->server)

- {

- if (strpos($this->server, ':') !== false)

- {

- list($this->server, $this->port) = explode(':', $this->server, 2);

- }

-

- if ($this->server !== 'localhost')

- {

- $connect_string .= 'host=' . $this->server . ' ';

- }

-

- if ($this->port)

- {

- $connect_string .= 'port=' . $this->port . ' ';

- }

- }

-

- $this->schema = '';

-

- if ($this->dbname)

- {

- if (strpos($this->dbname, '.') !== false)

- {

- list($this->dbname, $this->schema) = explode('.', $this->dbname, 2);

- }

- $connect_string .= 'dbname=' . $this->dbname;

- }

-

- $this->db_connect_id = ($this->persistency) ? @pg_pconnect($connect_string, ($new_link) ? PGSQL_CONNECT_FORCE_NEW : false) : @pg_connect($connect_string, ($new_link) ? PGSQL_CONNECT_FORCE_NEW : false);

-

- if (!$this->db_connect_id)

- {

- return $this->sql_error(htmlspecialchars_decode(phpbb::$last_notice['message']));

- }

-

- if ($this->schema)

- {

- @pg_query($this->db_connect_id, 'SET search_path TO ' . $this->schema);

- }

-

- return $this->db_connect_id;

- }

-

- /**

- * Version information about used database. See {@link phpbb_dbal::sql_server_info() sql_server_info()} for details.

- */

- public function sql_server_info($raw = false)

- {

- if (!phpbb::registered('acm') || ($this->sql_server_version = phpbb::$acm->get('#pgsql_version')) === false)

- {

- $query_id = @pg_query($this->db_connect_id, 'SELECT VERSION() AS version');

- $row = @pg_fetch_assoc($query_id, null);

- @pg_free_result($query_id);

-

- $this->sql_server_version = (!empty($row['version'])) ? trim(substr($row['version'], 10)) : 0;

-

- if (phpbb::registered('acm'))

- {

- phpbb::$acm->put('#pgsql_version', $this->sql_server_version);

- }

- }

-

- return ($raw) ? $this->sql_server_version : 'PostgreSQL ' . $this->sql_server_version;

- }

-

- /**

- * DB-specific base query method. See {@link phpbb_dbal::_sql_query() _sql_query()} for details.

- */

- protected function _sql_query($query)

- {

- return @pg_query($this->db_connect_id, $query);

- }

-

- /**

- * Build LIMIT query and run it. See {@link phpbb_dbal::_sql_query_limit() _sql_query_limit()} for details.

- */

- protected function _sql_query_limit($query, $total, $offset, $cache_ttl)

- {

- // if $total is set to 0 we do not want to limit the number of rows

- if ($total == 0)

- {

- $total = 'ALL';

- }

-

- $query .= "\n LIMIT $total OFFSET $offset";

- return $this->sql_query($query, $cache_ttl);

- }

-

- /**

- * Close sql connection. See {@link phpbb_dbal::_sql_close() _sql_close()} for details.

- */

- protected function _sql_close()

- {

- return @pg_close($this->db_connect_id);

- }

-

- /**

- * SQL Transaction. See {@link phpbb_dbal::_sql_transaction() _sql_transaction()} for details.

- */

- protected function _sql_transaction($status)

- {

- switch ($status)

- {

- case 'begin':

- return @pg_query($this->db_connect_id, 'BEGIN');

- break;

-

- case 'commit':

- return @pg_query($this->db_connect_id, 'COMMIT');

- break;

-

- case 'rollback':

- return @pg_query($this->db_connect_id, 'ROLLBACK');

- break;

- }

-

- return true;

- }

-

- /**

- * Return number of affected rows. See {@link phpbb_dbal::sql_affectedrows() sql_affectedrows()} for details.

- */

- public function sql_affectedrows()

- {

- return ($this->query_result) ? @pg_affected_rows($this->query_result) : false;

- }

-

- /**

- * Get last inserted id after insert statement. See {@link phpbb_dbal::sql_nextid() sql_nextid()} for details.

- */

- public function sql_nextid()

- {

- if (!$this->db_connect_id)

- {

- return false;

- }

-

- $query = "SELECT lastval() AS last_value";

- $temp_q_id = @pg_query($this->db_connect_id, $query);

-

- if (!$temp_q_id)

- {

- return false;

- }

-

- $temp_result = @pg_fetch_assoc($temp_q_id, NULL);

- @pg_free_result($query_id);

-

- return ($temp_result) ? $temp_result['last_value'] : false;

- }

-

- /**

- * Fetch current row. See {@link phpbb_dbal::_sql_fetchrow() _sql_fetchrow()} for details.

- */

- protected function _sql_fetchrow($query_id)

- {

- return @pg_fetch_assoc($query_id, null);

- }

-

- /**

- * Free query result. See {@link phpbb_dbal::_sql_freeresult() _sql_freeresult()} for details.

- */

- protected function _sql_freeresult($query_id)

- {

- return @pg_free_result($query_id);

- }

-

- /**

- * Correctly adjust LIKE expression for special characters. See {@link phpbb_dbal::_sql_like_expression() _sql_like_expression()} for details.

- */

- protected function _sql_like_expression($expression)

- {

- return $expression;

- }

-

- /**

- * Escape string used in sql query. See {@link phpbb_dbal::sql_escape() sql_escape()} for details.

- * Note: Do not use for bytea values if we may use them at a later stage

- */

- public function sql_escape($msg)

- {

- return @pg_escape_string($msg);

- }

-

- /**

- * Expose a DBMS specific function. See {@link phpbb_dbal::sql_function() sql_function()} for details.

- */

- public function sql_function($type, $col)

- {

- switch ($type)

- {

- case 'length_varchar':

- case 'length_text':

- return 'LENGTH(' . $col . ')';

- break;

- }

- }

-

-/*

- /**

- * Handle data by using prepared statements. See {@link phpbb_dbal::sql_handle_data() sql_handle_data()} for details.

- public function sql_handle_data($type, $table, $data, $where = '')

- {

- // for now, stmtname is an empty string, it might change to something more unique in the future

- if ($type === 'INSERT')

- {

- $stmt = pg_prepare($this->dbms_type, '', "INSERT INTO $table (". implode(', ', array_keys($data)) . ") VALUES ($" . implode(', $', range(1, sizeof($data))) . ')');

- }

- else

- {

- $query = "UPDATE $table SET ";

-

- $set = array();

- foreach (array_keys($data) as $key_id => $key)

- {

- $set[] = $key . ' = $' . $key_id;

- }

- $query .= implode(', ', $set);

-

- if ($where !== '')

- {

- $query .= $where;

- }

-

- $stmt = pg_prepare($this->db_connect_id, '', $query);

- }

-

- // add the stmtname to the top

- array_unshift($data, '');

-

- // add the connection resource

- array_unshift($data, $this->db_connect_id);

-

- call_user_func_array('pg_execute', $data);

- }

-*/

-

- /**

- * Build DB-specific query bits. See {@link phpbb_dbal::_sql_custom_build() _sql_custom_build()} for details.

- */

- protected function _sql_custom_build($stage, $data)

- {

- return $data;

- }

-

- /**

- * return sql error array. See {@link phpbb_dbal::_sql_error() _sql_error()} for details.

- */

- protected function _sql_error()

- {

- return array(

- 'message' => (!$this->db_connect_id) ? @pg_last_error() : @pg_last_error($this->db_connect_id),

- 'code' => ''

- );

- }

-

- /**

- * Run DB-specific code to build SQL Report to explain queries, show statistics and runtime information. See {@link phpbb_dbal::_sql_report() _sql_report()} for details.

- */

- protected function _sql_report($mode, $query = '')

- {

- switch ($mode)

- {

- case 'start':

-

- $explain_query = $query;

- if (preg_match('/UPDATE ([a-z0-9_]+).*?WHERE(.*)/s', $query, $m))

- {

- $explain_query = 'SELECT * FROM ' . $m[1] . ' WHERE ' . $m[2];

- }

- else if (preg_match('/DELETE FROM ([a-z0-9_]+).*?WHERE(.*)/s', $query, $m))

- {

- $explain_query = 'SELECT * FROM ' . $m[1] . ' WHERE ' . $m[2];

- }

-

- if (preg_match('/^SELECT/', $explain_query))

- {

- $html_table = false;

-

- if ($result = @pg_query($this->db_connect_id, "EXPLAIN $explain_query"))

- {

- while ($row = @pg_fetch_assoc($result, NULL))

- {

- $html_table = $this->sql_report('add_select_row', $query, $html_table, $row);

- }

- }

- @pg_free_result($result);

-

- if ($html_table)

- {

- $this->html_hold .= '</table>';

- }

- }

-

- break;

-

- case 'fromcache':

- $endtime = explode(' ', microtime());

- $endtime = $endtime[0] + $endtime[1];

-

- $result = @pg_query($this->db_connect_id, $query);

- while ($void = @pg_fetch_assoc($result, NULL))

- {

- // Take the time spent on parsing rows into account

- }

- @pg_free_result($result);

-

- $splittime = explode(' ', microtime());

- $splittime = $splittime[0] + $splittime[1];

-

- $this->sql_report('record_fromcache', $query, $endtime, $splittime);

-

- break;

- }

- }

-}

-

-?> \ No newline at end of file