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-rw-r--r--system/database/drivers/postgre/postgre_driver.php390
1 files changed, 204 insertions, 186 deletions
diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
index 89541e5fa..4e77b9f1c 100644
--- a/system/database/drivers/postgre/postgre_driver.php
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -1,13 +1,13 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.1.6 or newer
*
* NOTICE OF LICENSE
- *
+ *
* Licensed under the Open Software License version 3.0
- *
+ *
* This source file is subject to the Open Software License (OSL 3.0) that is
* bundled with this package in the files license.txt / license.rst. It is
* also available through the world wide web at this URL:
@@ -25,8 +25,6 @@
* @filesource
*/
-// ------------------------------------------------------------------------
-
/**
* Postgre Database Adapter Class
*
@@ -42,47 +40,81 @@
*/
class CI_DB_postgre_driver extends CI_DB {
- var $dbdriver = 'postgre';
+ public $dbdriver = 'postgre';
- var $_escape_char = '"';
+ protected $_escape_char = '"';
// clause and character used for LIKE escape sequences
- var $_like_escape_str = " ESCAPE '%s' ";
- var $_like_escape_chr = '!';
+ protected $_like_escape_str = ' ESCAPE \'%s\' ';
+ protected $_like_escape_chr = '!';
/**
* The syntax to count rows is slightly different across different
* database engines, so this string appears in each driver and is
* used for the count_all() and count_all_results() functions.
*/
- var $_count_string = "SELECT COUNT(*) AS ";
- var $_random_keyword = ' RANDOM()'; // database specific random keyword
+ protected $_count_string = 'SELECT COUNT(*) AS ';
+ protected $_random_keyword = ' RANDOM()'; // database specific random keyword
/**
- * Connection String
+ * Constructor
*
- * @access private
- * @return string
+ * Creates a DSN string to be used for db_connect() and db_pconnect()
+ *
+ * @return void
*/
- function _connect_string()
+ public function __construct($params)
{
- $components = array(
- 'hostname' => 'host',
- 'port' => 'port',
- 'database' => 'dbname',
- 'username' => 'user',
- 'password' => 'password'
- );
-
- $connect_string = "";
- foreach ($components as $key => $val)
+ parent::__construct($params);
+
+ if ( ! empty($this->dsn))
+ {
+ return;
+ }
+
+ $this->dsn === '' OR $this->dsn = '';
+
+ if (strpos($this->hostname, '/') !== FALSE)
+ {
+ // If UNIX sockets are used, we shouldn't set a port
+ $this->port = '';
+ }
+
+ $this->hostname === '' OR $this->dsn = 'host='.$this->hostname;
+
+ if ( ! empty($this->port) && ctype_digit($this->port))
+ {
+ $this->dsn .= 'host='.$this->port.' ';
+ }
+
+ if ($this->username !== '')
+ {
+ $this->dsn .= 'username='.$this->username.' ';
+
+ /* An empty password is valid!
+ *
+ * $db['password'] = NULL must be done in order to ignore it.
+ */
+ $this->password === NULL OR $this->dsn .= "password='".$this->password."' ";
+ }
+
+ $this->database === '' OR $this->dsn .= 'dbname='.$this->database.' ';
+
+ /* We don't have these options as elements in our standard configuration
+ * array, but they might be set by parse_url() if the configuration was
+ * provided via string. Example:
+ *
+ * postgre://username:password@localhost:5432/database?connect_timeout=5&sslmode=1
+ */
+ foreach (array('connect_timeout', 'options', 'sslmode', 'service') as $key)
{
- if (isset($this->$key) && $this->$key != '')
+ if (isset($this->$key) && is_string($this->key) && $this->key !== '')
{
- $connect_string .= " $val=".$this->$key;
+ $this->dsn .= $key."='".$this->key."' ";
}
}
- return trim($connect_string);
+
+ $this->dsn = rtrim($this->dsn);
}
// --------------------------------------------------------------------
@@ -90,12 +122,17 @@ class CI_DB_postgre_driver extends CI_DB {
/**
* Non-persistent database connection
*
- * @access private called by the base class
* @return resource
*/
- function db_connect()
+ public function db_connect()
{
- return @pg_connect($this->_connect_string());
+ $ret = @pg_connect($this->dsn);
+ if (is_resource($ret) && $this->char_set != '')
+ {
+ pg_set_client_encoding($ret, $this->char_set);
+ }
+
+ return $ret;
}
// --------------------------------------------------------------------
@@ -103,12 +140,17 @@ class CI_DB_postgre_driver extends CI_DB {
/**
* Persistent database connection
*
- * @access private called by the base class
* @return resource
*/
- function db_pconnect()
+ public function db_pconnect()
{
- return @pg_pconnect($this->_connect_string());
+ $ret = @pg_pconnect($this->dsn);
+ if (is_resource($ret) && $this->char_set != '')
+ {
+ pg_set_client_encoding($ret, $this->char_set);
+ }
+
+ return $ret;
}
// --------------------------------------------------------------------
@@ -119,10 +161,9 @@ class CI_DB_postgre_driver extends CI_DB {
* Keep / reestablish the db connection if no queries have been
* sent for a length of time exceeding the server's idle timeout
*
- * @access public
* @return void
*/
- function reconnect()
+ public function reconnect()
{
if (pg_ping($this->conn_id) === FALSE)
{
@@ -135,10 +176,9 @@ class CI_DB_postgre_driver extends CI_DB {
/**
* Select the database
*
- * @access private called by the base class
* @return resource
*/
- function db_select()
+ public function db_select()
{
// Not needed for Postgre so we'll return TRUE
return TRUE;
@@ -147,14 +187,47 @@ class CI_DB_postgre_driver extends CI_DB {
// --------------------------------------------------------------------
/**
+ * Set client character set
+ *
+ * @param string
+ * @return bool
+ */
+ protected function _db_set_charset($charset)
+ {
+ return (pg_set_client_encoding($this->conn_id, $charset) === 0);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Database version
+ *
+ * This method overrides the one from the base class, as if PHP was
+ * compiled with PostgreSQL version >= 7.4 libraries, we have a native
+ * function to get the server's version.
+ *
+ * @return string
+ */
+ public function version()
+ {
+ $version = pg_version($this->conn_id);
+
+ /* If we don't have the server version string - fall back to
+ * the base driver class' method
+ */
+ return isset($version['server']) ? $version['server'] : parent::version();
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
* Version number query string
*
- * @access public
* @return string
*/
- function _version()
+ protected function _version()
{
- return "SELECT version() AS ver";
+ return 'SELECT version() AS ver';
}
// --------------------------------------------------------------------
@@ -162,14 +235,12 @@ class CI_DB_postgre_driver extends CI_DB {
/**
* Execute the query
*
- * @access private called by the base class
* @param string an SQL query
* @return resource
*/
- function _execute($sql)
+ protected function _execute($sql)
{
- $sql = $this->_prep_query($sql);
- return @pg_query($this->conn_id, $sql);
+ return @pg_query($this->conn_id, $this->_prep_query($sql));
}
// --------------------------------------------------------------------
@@ -179,11 +250,10 @@ class CI_DB_postgre_driver extends CI_DB {
*
* If needed, each database adapter can prep the query string
*
- * @access private called by execute()
* @param string an SQL query
* @return string
*/
- function _prep_query($sql)
+ protected function _prep_query($sql)
{
return $sql;
}
@@ -193,18 +263,13 @@ class CI_DB_postgre_driver extends CI_DB {
/**
* Begin Transaction
*
- * @access public
+ * @param bool
* @return bool
*/
- function trans_begin($test_mode = FALSE)
+ public function trans_begin($test_mode = FALSE)
{
- if ( ! $this->trans_enabled)
- {
- return TRUE;
- }
-
// When transactions are nested we only begin/commit/rollback the outermost ones
- if ($this->_trans_depth > 0)
+ if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
{
return TRUE;
}
@@ -212,9 +277,9 @@ class CI_DB_postgre_driver extends CI_DB {
// Reset the transaction failure flag.
// If the $test_mode flag is set to TRUE transactions will be rolled back
// even if the queries produce a successful result.
- $this->_trans_failure = ($test_mode === TRUE) ? TRUE : FALSE;
+ $this->_trans_failure = ($test_mode === TRUE);
- return @pg_exec($this->conn_id, "begin");
+ return (bool) @pg_query($this->conn_id, 'BEGIN');
}
// --------------------------------------------------------------------
@@ -222,23 +287,17 @@ class CI_DB_postgre_driver extends CI_DB {
/**
* Commit Transaction
*
- * @access public
* @return bool
*/
- function trans_commit()
+ public function trans_commit()
{
- if ( ! $this->trans_enabled)
- {
- return TRUE;
- }
-
// When transactions are nested we only begin/commit/rollback the outermost ones
- if ($this->_trans_depth > 0)
+ if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
{
return TRUE;
}
- return @pg_exec($this->conn_id, "commit");
+ return (bool) @pg_query($this->conn_id, 'COMMIT');
}
// --------------------------------------------------------------------
@@ -246,23 +305,17 @@ class CI_DB_postgre_driver extends CI_DB {
/**
* Rollback Transaction
*
- * @access public
* @return bool
*/
- function trans_rollback()
+ public function trans_rollback()
{
- if ( ! $this->trans_enabled)
- {
- return TRUE;
- }
-
// When transactions are nested we only begin/commit/rollback the outermost ones
- if ($this->_trans_depth > 0)
+ if ( ! $this->trans_enabled OR $this->_trans_depth > 0)
{
return TRUE;
}
- return @pg_exec($this->conn_id, "rollback");
+ return (bool) @pg_query($this->conn_id, 'ROLLBACK');
}
// --------------------------------------------------------------------
@@ -270,12 +323,11 @@ class CI_DB_postgre_driver extends CI_DB {
/**
* Escape String
*
- * @access public
* @param string
* @param bool whether or not the string will be used in a LIKE condition
* @return string
*/
- function escape_str($str, $like = FALSE)
+ public function escape_str($str, $like = FALSE)
{
if (is_array($str))
{
@@ -292,9 +344,9 @@ class CI_DB_postgre_driver extends CI_DB {
// escape LIKE condition wildcards
if ($like === TRUE)
{
- $str = str_replace( array('%', '_', $this->_like_escape_chr),
- array($this->_like_escape_chr.'%', $this->_like_escape_chr.'_', $this->_like_escape_chr.$this->_like_escape_chr),
- $str);
+ return str_replace(array('%', '_', $this->_like_escape_chr),
+ array($this->_like_escape_chr.'%', $this->_like_escape_chr.'_', $this->_like_escape_chr.$this->_like_escape_chr),
+ $str);
}
return $str;
@@ -305,10 +357,9 @@ class CI_DB_postgre_driver extends CI_DB {
/**
* Affected Rows
*
- * @access public
- * @return integer
+ * @return int
*/
- function affected_rows()
+ public function affected_rows()
{
return @pg_affected_rows($this->result_id);
}
@@ -318,40 +369,45 @@ class CI_DB_postgre_driver extends CI_DB {
/**
* Insert ID
*
- * @access public
- * @return integer
+ * @return int
*/
- function insert_id()
+ public function insert_id()
{
- $v = $this->_version();
- $v = $v['server'];
+ $v = pg_version($this->conn_id);
+ $v = isset($v['server']) ? $v['server'] : 0; // 'server' key is only available since PosgreSQL 7.4
- $table = func_num_args() > 0 ? func_get_arg(0) : NULL;
- $column = func_num_args() > 1 ? func_get_arg(1) : NULL;
+ $table = (func_num_args() > 0) ? func_get_arg(0) : NULL;
+ $column = (func_num_args() > 1) ? func_get_arg(1) : NULL;
if ($table == NULL && $v >= '8.1')
{
- $sql='SELECT LASTVAL() as ins_id';
- }
- elseif ($table != NULL && $column != NULL && $v >= '8.0')
- {
- $sql = sprintf("SELECT pg_get_serial_sequence('%s','%s') as seq", $table, $column);
- $query = $this->query($sql);
- $row = $query->row();
- $sql = sprintf("SELECT CURRVAL('%s') as ins_id", $row->seq);
+ $sql = 'SELECT LASTVAL() AS ins_id';
}
elseif ($table != NULL)
{
- // seq_name passed in table parameter
- $sql = sprintf("SELECT CURRVAL('%s') as ins_id", $table);
+ if ($column != NULL && $v >= '8.0')
+ {
+ $sql = 'SELECT pg_get_serial_sequence(\''.$table."', '".$column."') AS seq";
+ $query = $this->query($sql);
+ $query = $query->row();
+ $seq = $query->seq;
+ }
+ else
+ {
+ // seq_name passed in table parameter
+ $seq = $table;
+ }
+
+ $sql = 'SELECT CURRVAL(\''.$seq."') AS ins_id";
}
else
{
return pg_last_oid($this->result_id);
}
+
$query = $this->query($sql);
- $row = $query->row();
- return $row->ins_id;
+ $query = $query->row();
+ return (int) $query->ins_id;
}
// --------------------------------------------------------------------
@@ -362,27 +418,25 @@ class CI_DB_postgre_driver extends CI_DB {
* Generates a platform-specific query string that counts all records in
* the specified database
*
- * @access public
* @param string
* @return string
*/
- function count_all($table = '')
+ public function count_all($table = '')
{
if ($table == '')
{
return 0;
}
- $query = $this->query($this->_count_string . $this->_protect_identifiers('numrows') . " FROM " . $this->_protect_identifiers($table, TRUE, NULL, FALSE));
-
+ $query = $this->query($this->_count_string.$this->_protect_identifiers('numrows').' FROM '.$this->_protect_identifiers($table, TRUE, NULL, FALSE));
if ($query->num_rows() == 0)
{
return 0;
}
- $row = $query->row();
+ $query = $query->row();
$this->_reset_select();
- return (int) $row->numrows;
+ return (int) $query->numrows;
}
// --------------------------------------------------------------------
@@ -392,17 +446,16 @@ class CI_DB_postgre_driver extends CI_DB {
*
* Generates a platform-specific query string so that the table names can be fetched
*
- * @access private
- * @param boolean
+ * @param bool
* @return string
*/
- function _list_tables($prefix_limit = FALSE)
+ protected function _list_tables($prefix_limit = FALSE)
{
$sql = "SELECT table_name FROM information_schema.tables WHERE table_schema = 'public'";
- if ($prefix_limit !== FALSE AND $this->dbprefix != '')
+ if ($prefix_limit !== FALSE && $this->dbprefix != '')
{
- $sql .= " AND table_name LIKE '".$this->escape_like_str($this->dbprefix)."%' ".sprintf($this->_like_escape_str, $this->_like_escape_chr);
+ return $sql." AND table_name LIKE '".$this->escape_like_str($this->dbprefix)."%' ".sprintf($this->_like_escape_str, $this->_like_escape_chr);
}
return $sql;
@@ -415,13 +468,12 @@ class CI_DB_postgre_driver extends CI_DB {
*
* Generates a platform-specific query string so that the column names can be fetched
*
- * @access public
* @param string the table name
* @return string
*/
- function _list_columns($table = '')
+ protected function _list_columns($table = '')
{
- return "SELECT column_name FROM information_schema.columns WHERE table_name ='".$table."'";
+ return "SELECT column_name FROM information_schema.columns WHERE table_name = '".$table."'";
}
// --------------------------------------------------------------------
@@ -431,13 +483,12 @@ class CI_DB_postgre_driver extends CI_DB {
*
* Generates a platform-specific query so that the column data can be retrieved
*
- * @access public
* @param string the table name
- * @return object
+ * @return string
*/
- function _field_data($table)
+ protected function _field_data($table)
{
- return "SELECT * FROM ".$table." LIMIT 1";
+ return 'SELECT * FROM '.$table.' LIMIT 1';
}
// --------------------------------------------------------------------
@@ -445,10 +496,9 @@ class CI_DB_postgre_driver extends CI_DB {
/**
* The error message string
*
- * @access private
* @return string
*/
- function _error_message()
+ protected function _error_message()
{
return pg_last_error($this->conn_id);
}
@@ -458,11 +508,11 @@ class CI_DB_postgre_driver extends CI_DB {
/**
* The error message number
*
- * @access private
- * @return integer
+ * @return string
*/
- function _error_number()
+ protected function _error_number()
{
+ // Not supported in Postgre
return '';
}
@@ -473,11 +523,10 @@ class CI_DB_postgre_driver extends CI_DB {
*
* This function escapes column and table names
*
- * @access private
* @param string
* @return string
*/
- function _escape_identifiers($item)
+ public function _escape_identifiers($item)
{
if ($this->_escape_char == '')
{
@@ -488,24 +537,20 @@ class CI_DB_postgre_driver extends CI_DB {
{
if (strpos($item, '.'.$id) !== FALSE)
{
- $str = $this->_escape_char. str_replace('.', $this->_escape_char.'.', $item);
+ $item = str_replace('.', $this->_escape_char.'.', $item);
// remove duplicates if the user already included the escape
- return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str);
+ return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $this->_escape_char.$item);
}
}
if (strpos($item, '.') !== FALSE)
{
- $str = $this->_escape_char.str_replace('.', $this->_escape_char.'.'.$this->_escape_char, $item).$this->_escape_char;
- }
- else
- {
- $str = $this->_escape_char.$item.$this->_escape_char;
+ $item = str_replace('.', $this->_escape_char.'.'.$this->_escape_char, $item);
}
// remove duplicates if the user already included the escape
- return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str);
+ return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $this->_escape_char.$item.$this->_escape_char);
}
// --------------------------------------------------------------------
@@ -516,11 +561,10 @@ class CI_DB_postgre_driver extends CI_DB {
* This function implicitly groups FROM tables so there is no confusion
* about operator precedence in harmony with SQL standards
*
- * @access public
- * @param type
- * @return type
+ * @param string table name
+ * @return string
*/
- function _from_tables($tables)
+ protected function _from_tables($tables)
{
if ( ! is_array($tables))
{
@@ -537,15 +581,14 @@ class CI_DB_postgre_driver extends CI_DB {
*
* Generates a platform-specific insert string from the supplied data
*
- * @access public
* @param string the table name
* @param array the insert keys
* @param array the insert values
* @return string
*/
- function _insert($table, $keys, $values)
+ protected function _insert($table, $keys, $values)
{
- return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES (".implode(', ', $values).")";
+ return 'INSERT INTO '.$table.' ('.implode(', ', $keys).') VALUES ('.implode(', ', $values).')';
}
// --------------------------------------------------------------------
@@ -555,15 +598,14 @@ class CI_DB_postgre_driver extends CI_DB {
*
* Generates a platform-specific insert string from the supplied data
*
- * @access public
* @param string the table name
* @param array the insert keys
* @param array the insert values
* @return string
*/
- function _insert_batch($table, $keys, $values)
+ protected function _insert_batch($table, $keys, $values)
{
- return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES ".implode(', ', $values);
+ return 'INSERT INTO '.$table.' ('.implode(', ', $keys).') VALUES '.implode(', ', $values);
}
// --------------------------------------------------------------------
@@ -573,7 +615,6 @@ class CI_DB_postgre_driver extends CI_DB {
*
* Generates a platform-specific update string from the supplied data
*
- * @access public
* @param string the table name
* @param array the update data
* @param array the where clause
@@ -581,24 +622,17 @@ class CI_DB_postgre_driver extends CI_DB {
* @param array the limit clause
* @return string
*/
- function _update($table, $values, $where, $orderby = array(), $limit = FALSE)
+ protected function _update($table, $values, $where, $orderby = array(), $limit = FALSE)
{
foreach ($values as $key => $val)
{
- $valstr[] = $key." = ".$val;
+ $valstr[] = $key.' = '.$val;
}
- $limit = ( ! $limit) ? '' : ' LIMIT '.$limit;
-
- $orderby = (count($orderby) >= 1)?' ORDER BY '.implode(", ", $orderby):'';
-
- $sql = "UPDATE ".$table." SET ".implode(', ', $valstr);
-
- $sql .= ($where != '' AND count($where) >=1) ? " WHERE ".implode(" ", $where) : '';
-
- $sql .= $orderby.$limit;
-
- return $sql;
+ return 'UPDATE '.$table.' SET '.implode(', ', $valstr)
+ .(($where != '' && count($where) > 0) ? ' WHERE '.implode(' ', $where) : '')
+ .(count($orderby) > 0 ? ' ORDER BY '.implode(', ', $orderby) : '')
+ .( ! $limit ? '' : ' LIMIT '.$limit);
}
// --------------------------------------------------------------------
@@ -610,13 +644,12 @@ class CI_DB_postgre_driver extends CI_DB {
* If the database does not support the truncate() command
* This function maps to "DELETE FROM table"
*
- * @access public
* @param string the table name
* @return string
*/
- function _truncate($table)
+ protected function _truncate($table)
{
- return "TRUNCATE ".$table;
+ return 'TRUNCATE '.$table;
}
// --------------------------------------------------------------------
@@ -626,31 +659,27 @@ class CI_DB_postgre_driver extends CI_DB {
*
* Generates a platform-specific delete string from the supplied data
*
- * @access public
* @param string the table name
* @param array the where clause
* @param string the limit clause
* @return string
*/
- function _delete($table, $where = array(), $like = array(), $limit = FALSE)
+ protected function _delete($table, $where = array(), $like = array(), $limit = FALSE)
{
$conditions = '';
if (count($where) > 0 OR count($like) > 0)
{
- $conditions = "\nWHERE ";
- $conditions .= implode("\n", $this->ar_where);
+ $conditions = "\nWHERE ".implode("\n", $this->ar_where);
if (count($where) > 0 && count($like) > 0)
{
- $conditions .= " AND ";
+ $conditions .= ' AND ';
}
$conditions .= implode("\n", $like);
}
- $limit = ( ! $limit) ? '' : ' LIMIT '.$limit;
-
- return "DELETE FROM ".$table.$conditions.$limit;
+ return 'DELETE FROM '.$table.$conditions.( ! $limit ? '' : ' LIMIT '.$limit);
}
// --------------------------------------------------------------------
@@ -659,22 +688,14 @@ class CI_DB_postgre_driver extends CI_DB {
*
* Generates a platform-specific LIMIT clause
*
- * @access public
* @param string the sql query string
- * @param integer the number of rows to limit the query to
- * @param integer the offset value
+ * @param int the number of rows to limit the query to
+ * @param int the offset value
* @return string
*/
- function _limit($sql, $limit, $offset)
+ protected function _limit($sql, $limit, $offset)
{
- $sql .= "LIMIT ".$limit;
-
- if ($offset > 0)
- {
- $sql .= " OFFSET ".$offset;
- }
-
- return $sql;
+ return $sql.' LIMIT '.$limit.($offset == 0 ? '' : ' OFFSET '.$offset);
}
// --------------------------------------------------------------------
@@ -682,18 +703,15 @@ class CI_DB_postgre_driver extends CI_DB {
/**
* Close DB Connection
*
- * @access public
* @param resource
* @return void
*/
- function _close($conn_id)
+ protected function _close($conn_id)
{
@pg_close($conn_id);
}
-
}
-
/* End of file postgre_driver.php */
/* Location: ./system/database/drivers/postgre/postgre_driver.php */
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-08-29 07:16:09 +0200