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authorBharat Mediratta <bharat@menalto.com>2009-11-24 19:20:36 -0800
committerBharat Mediratta <bharat@menalto.com>2009-11-24 19:20:36 -0800
commit9b6663f87a7e679ffba691cf516191fc840cf978 (patch)
tree20cf9f3aaf93b4ba69d282dcf10d259db4a752de /system/libraries/drivers/Database/Mssql.php
parent82ee5f9d338017c69331b2907f37a468ced8c66e (diff)
Update to Kohana r4684 which is now Kohana 2.4 and has substantial
changes.
Diffstat (limited to 'system/libraries/drivers/Database/Mssql.php')
-rw-r--r--system/libraries/drivers/Database/Mssql.php462
1 files changed, 0 insertions, 462 deletions
diff --git a/system/libraries/drivers/Database/Mssql.php b/system/libraries/drivers/Database/Mssql.php
deleted file mode 100644
index 8b5ed50b..00000000
--- a/system/libraries/drivers/Database/Mssql.php
+++ /dev/null
@@ -1,462 +0,0 @@
-<?php defined('SYSPATH') OR die('No direct access allowed.');
-/**
- * MSSQL Database Driver
- *
- * @package Core
- * @author Kohana Team
- * @copyright (c) 2007-2008 Kohana Team
- * @license http://kohanaphp.com/license.html
- */
-class Database_Mssql_Driver extends Database_Driver
-{
- /**
- * Database connection link
- */
- protected $link;
-
- /**
- * Database configuration
- */
- protected $db_config;
-
- /**
- * Sets the config for the class.
- *
- * @param array database configuration
- */
- public function __construct($config)
- {
- $this->db_config = $config;
-
- Kohana::log('debug', 'MSSQL Database Driver Initialized');
- }
-
- /**
- * Closes the database connection.
- */
- public function __destruct()
- {
- is_resource($this->link) and mssql_close($this->link);
- }
-
- /**
- * Make the connection
- *
- * @return return connection
- */
- public function connect()
- {
- // Check if link already exists
- if (is_resource($this->link))
- return $this->link;
-
- // Import the connect variables
- extract($this->db_config['connection']);
-
- // Persistent connections enabled?
- $connect = ($this->db_config['persistent'] == TRUE) ? 'mssql_pconnect' : 'mssql_connect';
-
- // Build the connection info
- $host = isset($host) ? $host : $socket;
-
- // Windows uses a comma instead of a colon
- $port = (isset($port) AND is_string($port)) ? (KOHANA_IS_WIN ? ',' : ':').$port : '';
-
- // Make the connection and select the database
- if (($this->link = $connect($host.$port, $user, $pass, TRUE)) AND mssql_select_db($database, $this->link))
- {
- /* This is being removed so I can use it, will need to come up with a more elegant workaround in the future...
- *
- if ($charset = $this->db_config['character_set'])
- {
- $this->set_charset($charset);
- }
- */
-
- // Clear password after successful connect
- $this->db_config['connection']['pass'] = NULL;
-
- return $this->link;
- }
-
- return FALSE;
- }
-
- public function query($sql)
- {
- // Only cache if it's turned on, and only cache if it's not a write statement
- if ($this->db_config['cache'] AND ! preg_match('#\b(?:INSERT|UPDATE|REPLACE|SET)\b#i', $sql))
- {
- $hash = $this->query_hash($sql);
-
- if ( ! isset($this->query_cache[$hash]))
- {
- // Set the cached object
- $this->query_cache[$hash] = new Mssql_Result(mssql_query($sql, $this->link), $this->link, $this->db_config['object'], $sql);
- }
- else
- {
- // Rewind cached result
- $this->query_cache[$hash]->rewind();
- }
-
- // Return the cached query
- return $this->query_cache[$hash];
- }
-
- return new Mssql_Result(mssql_query($sql, $this->link), $this->link, $this->db_config['object'], $sql);
- }
-
- public function escape_table($table)
- {
- if (stripos($table, ' AS ') !== FALSE)
- {
- // Force 'AS' to uppercase
- $table = str_ireplace(' AS ', ' AS ', $table);
-
- // Runs escape_table on both sides of an AS statement
- $table = array_map(array($this, __FUNCTION__), explode(' AS ', $table));
-
- // Re-create the AS statement
- return implode(' AS ', $table);
- }
- return '['.str_replace('.', '[.]', $table).']';
- }
-
- public function escape_column($column)
- {
- if (!$this->db_config['escape'])
- return $column;
-
- if ($column == '*')
- return $column;
-
- // This matches any functions we support to SELECT.
- if ( preg_match('/(avg|count|sum|max|min)\(\s*(.*)\s*\)(\s*as\s*(.+)?)?/i', $column, $matches))
- {
- if ( count($matches) == 3)
- {
- return $matches[1].'('.$this->escape_column($matches[2]).')';
- }
- else if ( count($matches) == 5)
- {
- return $matches[1].'('.$this->escape_column($matches[2]).') AS '.$this->escape_column($matches[2]);
- }
- }
-
- // This matches any modifiers we support to SELECT.
- if ( ! preg_match('/\b(?:rand|all|distinct(?:row)?|high_priority|sql_(?:small_result|b(?:ig_result|uffer_result)|no_cache|ca(?:che|lc_found_rows)))\s/i', $column))
- {
- if (stripos($column, ' AS ') !== FALSE)
- {
- // Force 'AS' to uppercase
- $column = str_ireplace(' AS ', ' AS ', $column);
-
- // Runs escape_column on both sides of an AS statement
- $column = array_map(array($this, __FUNCTION__), explode(' AS ', $column));
-
- // Re-create the AS statement
- return implode(' AS ', $column);
- }
-
- return preg_replace('/[^.*]+/', '[$0]', $column);
- }
-
- $parts = explode(' ', $column);
- $column = '';
-
- for ($i = 0, $c = count($parts); $i < $c; $i++)
- {
- // The column is always last
- if ($i == ($c - 1))
- {
- $column .= preg_replace('/[^.*]+/', '[$0]', $parts[$i]);
- }
- else // otherwise, it's a modifier
- {
- $column .= $parts[$i].' ';
- }
- }
- return $column;
- }
-
- /**
- * Limit in SQL Server 2000 only uses the keyword
- * 'TOP'; 2007 may have an offset keyword, but
- * I am unsure - for pagination style limit,offset
- * functionality, a fancy query needs to be built.
- *
- * @param unknown_type $limit
- * @return unknown
- */
- public function limit($limit, $offset=null)
- {
- return 'TOP '.$limit;
- }
-
- public function compile_select($database)
- {
- $sql = ($database['distinct'] == TRUE) ? 'SELECT DISTINCT ' : 'SELECT ';
- $sql .= (count($database['select']) > 0) ? implode(', ', $database['select']) : '*';
-
- if (count($database['from']) > 0)
- {
- // Escape the tables
- $froms = array();
- foreach ($database['from'] as $from)
- $froms[] = $this->escape_column($from);
- $sql .= "\nFROM ";
- $sql .= implode(', ', $froms);
- }
-
- if (count($database['join']) > 0)
- {
- foreach($database['join'] AS $join)
- {
- $sql .= "\n".$join['type'].'JOIN '.implode(', ', $join['tables']).' ON '.$join['conditions'];
- }
- }
-
- if (count($database['where']) > 0)
- {
- $sql .= "\nWHERE ";
- }
-
- $sql .= implode("\n", $database['where']);
-
- if (count($database['groupby']) > 0)
- {
- $sql .= "\nGROUP BY ";
- $sql .= implode(', ', $database['groupby']);
- }
-
- if (count($database['having']) > 0)
- {
- $sql .= "\nHAVING ";
- $sql .= implode("\n", $database['having']);
- }
-
- if (count($database['orderby']) > 0)
- {
- $sql .= "\nORDER BY ";
- $sql .= implode(', ', $database['orderby']);
- }
-
- if (is_numeric($database['limit']))
- {
- $sql .= "\n";
- $sql .= $this->limit($database['limit']);
- }
-
- return $sql;
- }
-
- public function escape_str($str)
- {
- if (!$this->db_config['escape'])
- return $str;
-
- is_resource($this->link) or $this->connect();
- //mssql_real_escape_string($str, $this->link); <-- this function doesn't exist
-
- $characters = array('/\x00/', '/\x1a/', '/\n/', '/\r/', '/\\\/', '/\'/');
- $replace = array('\\\x00', '\\x1a', '\\n', '\\r', '\\\\', "''");
- return preg_replace($characters, $replace, $str);
- }
-
- public function list_tables()
- {
- $sql = 'SHOW TABLES FROM ['.$this->db_config['connection']['database'].']';
- $result = $this->query($sql)->result(FALSE, MSSQL_ASSOC);
-
- $retval = array();
- foreach ($result as $row)
- {
- $retval[] = current($row);
- }
-
- return $retval;
- }
-
- public function show_error()
- {
- return mssql_get_last_message($this->link);
- }
-
- public function list_fields($table)
- {
- $result = array();
-
- foreach ($this->field_data($table) as $row)
- {
- // Make an associative array
- $result[$row->Field] = $this->sql_type($row->Type);
- }
-
- return $result;
- }
-
- public function field_data($table)
- {
- $query = $this->query("SELECT COLUMN_NAME AS Field, DATA_TYPE as Type FROM INFORMATION_SCHEMA.Columns WHERE TABLE_NAME = '".$this->escape_table($table)."'", $this->link);
-
- return $query->result_array(TRUE);
- }
-}
-
-/**
- * MSSQL Result
- */
-class Mssql_Result extends Database_Result {
-
- // Fetch function and return type
- protected $fetch_type = 'mssql_fetch_object';
- protected $return_type = MSSQL_ASSOC;
-
- /**
- * Sets up the result variables.
- *
- * @param resource query result
- * @param resource database link
- * @param boolean return objects or arrays
- * @param string SQL query that was run
- */
- public function __construct($result, $link, $object = TRUE, $sql)
- {
- $this->result = $result;
-
- // If the query is a resource, it was a SELECT, SHOW, DESCRIBE, EXPLAIN query
- if (is_resource($result))
- {
- $this->current_row = 0;
- $this->total_rows = mssql_num_rows($this->result);
- $this->fetch_type = ($object === TRUE) ? 'mssql_fetch_object' : 'mssql_fetch_array';
- }
- elseif (is_bool($result))
- {
- if ($result == FALSE)
- {
- // SQL error
- throw new Kohana_Database_Exception('database.error', mssql_get_last_message($link).' - '.$sql);
- }
- else
- {
- // Its an DELETE, INSERT, REPLACE, or UPDATE querys
- $last_id = mssql_query('SELECT @@IDENTITY AS last_id', $link);
- $result = mssql_fetch_assoc($last_id);
- $this->insert_id = $result['last_id'];
- $this->total_rows = mssql_rows_affected($link);
- }
- }
-
- // Set result type
- $this->result($object);
-
- // Store the SQL
- $this->sql = $sql;
- }
-
- /**
- * Destruct, the cleanup crew!
- */
- public function __destruct()
- {
- if (is_resource($this->result))
- {
- mssql_free_result($this->result);
- }
- }
-
- public function result($object = TRUE, $type = MSSQL_ASSOC)
- {
- $this->fetch_type = ((bool) $object) ? 'mssql_fetch_object' : 'mssql_fetch_array';
-
- // This check has to be outside the previous statement, because we do not
- // know the state of fetch_type when $object = NULL
- // NOTE - The class set by $type must be defined before fetching the result,
- // autoloading is disabled to save a lot of stupid overhead.
- if ($this->fetch_type == 'mssql_fetch_object')
- {
- $this->return_type = (is_string($type) AND Kohana::auto_load($type)) ? $type : 'stdClass';
- }
- else
- {
- $this->return_type = $type;
- }
-
- return $this;
- }
-
- public function as_array($object = NULL, $type = MSSQL_ASSOC)
- {
- return $this->result_array($object, $type);
- }
-
- public function result_array($object = NULL, $type = MSSQL_ASSOC)
- {
- $rows = array();
-
- if (is_string($object))
- {
- $fetch = $object;
- }
- elseif (is_bool($object))
- {
- if ($object === TRUE)
- {
- $fetch = 'mssql_fetch_object';
-
- // NOTE - The class set by $type must be defined before fetching the result,
- // autoloading is disabled to save a lot of stupid overhead.
- $type = (is_string($type) AND Kohana::auto_load($type)) ? $type : 'stdClass';
- }
- else
- {
- $fetch = 'mssql_fetch_array';
- }
- }
- else
- {
- // Use the default config values
- $fetch = $this->fetch_type;
-
- if ($fetch == 'mssql_fetch_object')
- {
- $type = (is_string($type) AND Kohana::auto_load($type)) ? $type : 'stdClass';
- }
- }
-
- if (mssql_num_rows($this->result))
- {
- // Reset the pointer location to make sure things work properly
- mssql_data_seek($this->result, 0);
-
- while ($row = $fetch($this->result, $type))
- {
- $rows[] = $row;
- }
- }
-
- return isset($rows) ? $rows : array();
- }
-
- public function list_fields()
- {
- $field_names = array();
- while ($field = mssql_fetch_field($this->result))
- {
- $field_names[] = $field->name;
- }
-
- return $field_names;
- }
-
- public function seek($offset)
- {
- if ( ! $this->offsetExists($offset))
- return FALSE;
-
- return mssql_data_seek($this->result, $offset);
- }
-
-} // End mssql_Result Class