安装方法：
1.将mongodb.php 放到config目录
2.将Mongo_db.php放到library目录
使用方法：
$this->mongo_db->where_gte('age', 18)->where(array('country' => 'UK', 'can_drink' => TRUE))->get('people');
代码：
config/mongodb.php
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
// Generally will be localhost if you're querying from the machine that Mongo is installed on
$config['mongo_host'] = "localhost";
// Generally will be 27017 unless you've configured Mongo otherwise
$config['mongo_port'] = 27017;
// The database you want to work from (required)
$config['mongo_db'] = "";
// Leave blank if Mongo is not running in auth mode
$config['mongo_user'] = "";
$config['mongo_pass'] = "";
// Persistant connections
$config['mongo_persist'] = TRUE;
$config['mongo_persist_key'] = 'ci_mongo_persist';
// Get results as an object instead of an array
$config['mongo_return'] = 'array'; // Set to object
// When you run an insert/update/delete how sure do you want to be that the database has received the query?
// safe = the database has receieved and executed the query
// fysnc = as above + the change has been committed to harddisk <- NOTE: will introduce a performance penalty
$config['mongo_query_safety'] = 'safe';
// Supress connection error password display
$config['mongo_supress_connect_error'] = TRUE;
// If you are having problems connecting try changing this to TRUE
$config['host_db_flag'] = FALSE;
libraries/Mongo_db.php
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter MongoDB Active Record Library
*
* A library to interface with the NoSQL database MongoDB. For more information see http://www.mongodb.org
* Originally created by Alex Bilbie, but extended and updated by Kyle J. Dye
*
* @package CodeIgniter
* @author Alex Bilbie | www.alexbilbie.com | alex@alexbilbie.com
* @author Kyle J. Dye | www.kyledye.com | kyle@kyledye.com
* @copyright Copyright (c) 2010, Alex Bilbie.
* @license http://codeigniter.com/user_guide/license.html
* @link http://alexbilbie.com
* @link http://kyledye.com
* @version Version 0.3.7
*/
class Mongo_db {
private $CI;
private $config_file = 'mongodb';
private $connection;
private $db;
private $connection_string;
private $host;
private $port;
private $user;
private $pass;
private $dbname;
private $persist;
private $persist_key;
private $query_safety = 'safe';
private $selects = array();
public $wheres = array(); // Public to make debugging easier
private $sorts = array();
private $limit = 999999;
private $offset = 0;
/**
* --------------------------------------------------------------------------------
* CONSTRUCTOR
* --------------------------------------------------------------------------------
*
* Automatically check if the Mongo PECL extension has been installed/enabled.
* Generate the connection string and establish a connection to the MongoDB.
*/
public function __construct()
{
if ( ! class_exists('Mongo'))
{
show_error("The MongoDB PECL extension has not been installed or enabled", 500);
}
$this->CI =& get_instance();
$this->connection_string();
$this->connect();
}
/**
* --------------------------------------------------------------------------------
* Switch_db
* --------------------------------------------------------------------------------
*
* Switch from default database to a different db
*/
public function switch_db($database = '')
{
if (empty($database))
{
show_error("To switch MongoDB databases, a new database name must be specified", 500);
}
$this->dbname = $database;
try
{
$this->db = $this->connection->{$this->dbname};
return (TRUE);
}
catch (Exception $e)
{
show_error("Unable to switch Mongo Databases: {$e->getMessage()}", 500);
}
}
/**
* --------------------------------------------------------------------------------
* Drop_db
* --------------------------------------------------------------------------------
*
* Drop a Mongo database
* @usage: $this->mongo_db->drop_db("foobar");
*/
public function drop_db($database = '')
{
if (empty($database))
{
show_error('Failed to drop MongoDB database because name is empty', 500);
}
else
{
try
{
$this->connection->{$database}->drop();
return (TRUE);
}
catch (Exception $e)
{
show_error("Unable to drop Mongo database `{$database}`: {$e->getMessage()}", 500);
}
}
}
/**
* --------------------------------------------------------------------------------
* Drop_collection
* --------------------------------------------------------------------------------
*
* Drop a Mongo collection
* @usage: $this->mongo_db->drop_collection('foo', 'bar');
*/
public function drop_collection($db = "", $col = "")
{
if (empty($db))
{
show_error('Failed to drop MongoDB collection because database name is empty', 500);
}
if (empty($col))
{
show_error('Failed to drop MongoDB collection because collection name is empty', 500);
}
else
{
try
{
$this->connection->{$db}->{$col}->drop();
return TRUE;
}
catch (Exception $e)
{
show_error("Unable to drop Mongo collection `{$col}`: {$e->getMessage()}", 500);
}
}
return($this);
}
/**
* --------------------------------------------------------------------------------
* SELECT FIELDS
* --------------------------------------------------------------------------------
*
* Determine which fields to include OR which to exclude during the query process.
* Currently, including and excluding at the same time is not available, so the
* $includes array will take precedence over the $excludes array. If you want to
* only choose fields to exclude, leave $includes an empty array().
*
* @usage: $this->mongo_db->select(array('foo', 'bar'))->get('foobar');
*/
public function select($includes = array(), $excludes = array())
{
if ( ! is_array($includes))
{
$includes = array();
}
if ( ! is_array($excludes))
{
$excludes = array();
}
if ( ! empty($includes))
{
foreach ($includes as $col)
{
$this->selects[$col] = 1;
}
}
else
{
foreach ($excludes as $col)
{
$this->selects[$col] = 0;
}
}
return ($this);
}
/**
* --------------------------------------------------------------------------------
* WHERE PARAMETERS
* --------------------------------------------------------------------------------
*
* Get the documents based on these search parameters. The $wheres array should
* be an associative array with the field as the key and the value as the search
* criteria.
*
* @usage : $this->mongo_db->where(array('foo' => 'bar'))->get('foobar');
*/
public function where($wheres = array())
{
foreach ($wheres as $wh => $val)
{
$this->wheres[$wh] = $val;
}
return ($this);
}
/**
* --------------------------------------------------------------------------------
* OR_WHERE PARAMETERS
* --------------------------------------------------------------------------------
*
* Get the documents where the value of a $field may be something else
*
* @usage : $this->mongo_db->or_where(array( array('foo'=>'bar', 'bar'=>'foo' ))->get('foobar');
*/
public function or_where($wheres = array())
{
if (count($wheres) > 0)
{
if ( ! isset($this->wheres['$or']) || ! is_array($this->wheres['$or']))
{
$this->wheres['$or'] = array();
}
foreach ($wheres as $wh => $val)
{
$this->wheres['$or'][] = array($wh=>$val);
}
}
return ($this);
}
/**
* --------------------------------------------------------------------------------
* WHERE_IN PARAMETERS
* --------------------------------------------------------------------------------
*
* Get the documents where the value of a $field is in a given $in array().
*
* @usage : $this->mongo_db->where_in('foo', array('bar', 'zoo', 'blah'))->get('foobar');
*/
public function where_in($field = "", $in = array())
{
$this->_where_init($field);
$this->wheres[$field]['$in'] = $in;
return ($this);
}
/**
* --------------------------------------------------------------------------------
* WHERE_IN_ALL PARAMETERS
* --------------------------------------------------------------------------------
*
* Get the documents where the value of a $field is in all of a given $in array().
*
* @usage : $this->mongo_db->where_in('foo', array('bar', 'zoo', 'blah'))->get('foobar');
*/
public function where_in_all($field = "", $in = array())
{
$this->_where_init($field);
$this->wheres[$field]['$all'] = $in;
return ($this);
}
/**
* --------------------------------------------------------------------------------
* WHERE_NOT_IN PARAMETERS
* --------------------------------------------------------------------------------
*
* Get the documents where the value of a $field is not in a given $in array().
*
* @usage : $this->mongo_db->where_not_in('foo', array('bar', 'zoo', 'blah'))->get('foobar');
*/
public function where_not_in($field = "", $in = array())
{
$this->_where_init($field);
$this->wheres[$field]['$nin'] = $in;
return ($this);
}
/**
* --------------------------------------------------------------------------------
* WHERE GREATER THAN PARAMETERS
* --------------------------------------------------------------------------------
*
* Get the documents where the value of a $field is greater than $x
*
* @usage : $this->mongo_db->where_gt('foo', 20);
*/
public function where_gt($field = "", $x)
{
$this->_where_init($field);
$this->wheres[$field]['$gt'] = $x;
return ($this);
}
/**
* --------------------------------------------------------------------------------
* WHERE GREATER THAN OR EQUAL TO PARAMETERS
* --------------------------------------------------------------------------------
*
* Get the documents where the value of a $field is greater than or equal to $x
*
* @usage : $this->mongo_db->where_gte('foo', 20);
*/
public function where_gte($field = "", $x)
{
$this->_where_init($field);
$this->wheres[$field]['$gte'] = $x;
return($this);
}
/**
* --------------------------------------------------------------------------------
* WHERE LESS THAN PARAMETERS
* --------------------------------------------------------------------------------
*
* Get the documents where the value of a $field is less than $x
*
* @usage : $this->mongo_db->where_lt('foo', 20);
*/
public function where_lt($field = "", $x)
{
$this->_where_init($field);
$this->wheres[$field]['$lt'] = $x;
return($this);
}
/**
* --------------------------------------------------------------------------------
* WHERE LESS THAN OR EQUAL TO PARAMETERS
* --------------------------------------------------------------------------------
*
* Get the documents where the value of a $field is less than or equal to $x
*
* @usage : $this->mongo_db->where_lte('foo', 20);
*/
public function where_lte($field = "", $x)
{
$this->_where_init($field);
$this->wheres[$field]['$lte'] = $x;
return ($this);
}
/**
* --------------------------------------------------------------------------------
* WHERE BETWEEN PARAMETERS
* --------------------------------------------------------------------------------
*
* Get the documents where the value of a $field is between $x and $y
*
* @usage : $this->mongo_db->where_between('foo', 20, 30);
*/
public function where_between($field = "", $x, $y)
{
$this->_where_init($field);
$this->wheres[$field]['$gte'] = $x;
$this->wheres[$field]['$lte'] = $y;
return ($this);
}
/**
* --------------------------------------------------------------------------------
* WHERE BETWEEN AND NOT EQUAL TO PARAMETERS
* --------------------------------------------------------------------------------
*
* Get the documents where the value of a $field is between but not equal to $x and $y
*
* @usage : $this->mongo_db->where_between_ne('foo', 20, 30);
*/
public function where_between_ne($field = "", $x, $y)
{
$this->_where_init($field);
$this->wheres[$field]['$gt'] = $x;
$this->wheres[$field]['$lt'] = $y;
return ($this);
}
/**
* --------------------------------------------------------------------------------
* WHERE NOT EQUAL TO PARAMETERS
* --------------------------------------------------------------------------------
*
* Get the documents where the value of a $field is not equal to $x
*
* @usage : $this->mongo_db->where_not_equal('foo', 1)->get('foobar');
*/
public function where_ne($field = '', $x)
{
$this->_where_init($field);
$this->wheres[$field]['$ne'] = $x;
return ($this);
}
/**
* --------------------------------------------------------------------------------
* WHERE NOT EQUAL TO PARAMETERS
* --------------------------------------------------------------------------------
*
* Get the documents nearest to an array of coordinates (your collection must have a geospatial index)
*
* @usage : $this->mongo_db->where_near('foo', array('50','50'))->get('foobar');
*/
function where_near($field = '', $co = array())
{
$this->__where_init($field);
$this->where[$what]['$near'] = $co;
return ($this);
}
/**
* --------------------------------------------------------------------------------
* LIKE PARAMETERS
* --------------------------------------------------------------------------------
*
* Get the documents where the (string) value of a $field is like a value. The defaults
* allow for a case-insensitive search.
*
* @param $flags
* Allows for the typical regular expression flags:
* i = case insensitive
* m = multiline
* x = can contain comments
* l = locale
* s = dotall, "." matches everything, including newlines
* u = match unicode
*
* @param $enable_start_wildcard
* If set to anything other than TRUE, a starting line character "^" will be prepended
* to the search value, representing only searching for a value at the start of
* a new line.
*
* @param $enable_end_wildcard
* If set to anything other than TRUE, an ending line character "$" will be appended
* to the search value, representing only searching for a value at the end of
* a line.
*
* @usage : $this->mongo_db->like('foo', 'bar', 'im', FALSE, TRUE);
*/
public function like($field = "", $value = "", $flags = "i", $enable_start_wildcard = TRUE, $enable_end_wildcard = TRUE)
{
$field = (string) trim($field);
$this->where_init($field);
$value = (string) trim($value);
$value = quotemeta($value);
if ($enable_start_wildcard !== TRUE)
{
$value = "^" . $value;
}
if ($enable_end_wildcard !== TRUE)
{
$value .= "$";
}
$regex = "/$value/$flags";
$this->wheres[$field] = new MongoRegex($regex);
return ($this);
}
/**
* --------------------------------------------------------------------------------
* ORDER BY PARAMETERS
* --------------------------------------------------------------------------------
*
* Sort the documents based on the parameters passed. To set values to descending order,
* you must pass values of either -1, FALSE, 'desc', or 'DESC', else they will be
* set to 1 (ASC).
*
* @usage : $this->mongo_db->where_between('foo', 20, 30);
*/
public function order_by($fields = array())
{
foreach ($fields as $col => $val)
{
if ($val == -1 || $val === FALSE || strtolower($val) == 'desc')
{
$this->sorts[$col] = -1;
}
else
{
$this->sorts[$col] = 1;
}
}
return ($this);
}
/**
* --------------------------------------------------------------------------------
* LIMIT DOCUMENTS
* --------------------------------------------------------------------------------
*
* Limit the result set to $x number of documents
*
* @usage : $this->mongo_db->limit($x);
*/
public function limit($x = 99999)
{
if ($x !== NULL && is_numeric($x) && $x >= 1)
{
$this->limit = (int) $x;
}
return ($this);
}
/**
* --------------------------------------------------------------------------------
* OFFSET DOCUMENTS
* --------------------------------------------------------------------------------
*
* Offset the result set to skip $x number of documents
*
* @usage : $this->mongo_db->offset($x);
*/
public function offset($x = 0)
{
if ($x !== NULL && is_numeric($x) && $x >= 1)
{
$this->offset = (int) $x;
}
return ($this);
}
/**
* --------------------------------------------------------------------------------
* GET_WHERE
* --------------------------------------------------------------------------------
*
* Get the documents based upon the passed parameters
*
* @usage : $this->mongo_db->get_where('foo', array('bar' => 'something'));
*/
public function get_where($collection = "", $where = array())
{
return ($this->where($where)->get($collection));
}
/**
* --------------------------------------------------------------------------------
* GET
* --------------------------------------------------------------------------------
*
* Get the documents based upon the passed parameters
*
* @usage : $this->mongo_db->get('foo', array('bar' => 'something'));
*/
public function get($collection = "")
{
if (empty($collection))
{
show_error("In order to retreive documents from MongoDB, a collection name must be passed", 500);
}
$results = array();
$documents = $this->db->{$collection}->find($this->wheres, $this->selects)->limit((int) $this->limit)->skip((int) $this->offset)->sort($this->sorts);
// Clear
$this->_clear();
$returns = array();
foreach ($documents as $doc)
{
$returns[] = $doc;
}
if ($this->CI->config->item('mongo_return') == 'object')
{
return (object)$returns;
}
else
{
return $returns;
}
}
/**
* --------------------------------------------------------------------------------
* COUNT
* --------------------------------------------------------------------------------
*
* Count the documents based upon the passed parameters
*
* @usage : $this->mongo_db->get('foo');
*/
public function count($collection = "") {
if (empty($collection))
{
show_error("In order to retreive a count of documents from MongoDB, a collection name must be passed", 500);
}
$count = $this->db->{$collection}->find($this->wheres)->limit((int) $this->limit)->skip((int) $this->offset)->count();
$this->_clear();
return ($count);
}
/**
* --------------------------------------------------------------------------------
* INSERT
* --------------------------------------------------------------------------------
*
* Insert a new document into the passed collection
*
* @usage : $this->mongo_db->insert('foo', $data = array());
*/
public function insert($collection = "", $insert = array())
{
if (empty($collection))
{
show_error("No Mongo collection selected to insert into", 500);
}
if (count($insert) == 0 || !is_array($insert))
{
show_error("Nothing to insert into Mongo collection or insert is not an array", 500);
}
try
{
$this->db->{$collection}->insert($insert, array($this->query_safety => TRUE));
if (isset($insert['_id']))
{
return ($insert['_id']);
}
else
{
return (FALSE);
}
}
catch (MongoCursorException $e)
{
show_error("Insert of data into MongoDB failed: {$e->getMessage()}", 500);
}
}
/**
* --------------------------------------------------------------------------------
* UPDATE
* --------------------------------------------------------------------------------
*
* Updates a single document
*
* @usage: $this->mongo_db->update('foo', $data = array());
*/
public function update($collection = "", $data = array(), $options = array())
{
if (empty($collection))
{
show_error("No Mongo collection selected to update", 500);
}
if (count($data) == 0 || ! is_array($data))
{
show_error("Nothing to update in Mongo collection or update is not an array", 500);
}
try
{
$options = array_merge($options, array($this->query_safety => TRUE, 'multiple' => FALSE));
$this->db->{$collection}->update($this->wheres, array('$set' => $data), $options);
$this->_clear();
return (TRUE);
}
catch (MongoCursorException $e)
{
show_error("Update of data into MongoDB failed: {$e->getMessage()}", 500);
}
}
/**
* --------------------------------------------------------------------------------
* UPDATE_ALL
* --------------------------------------------------------------------------------
*
* Updates a collection of documents
*
* @usage: $this->mongo_db->update_all('foo', $data = array());
*/
public function update_all($collection = "", $data = array())
{
if (empty($collection))
{
show_error("No Mongo collection selected to update", 500);
}
if (count($data) == 0 || ! is_array($data))
{
show_error("Nothing to update in Mongo collection or update is not an array", 500);
}
try
{
$this->db->{$collection}->update($this->wheres, array('$set' => $data), array($this->query_safety => TRUE, 'multiple' => TRUE));
$this->_clear();
return (TRUE);
}
catch (MongoCursorException $e)
{
show_error("Update of data into MongoDB failed: {$e->getMessage()}", 500);
}
}
/**
* --------------------------------------------------------------------------------
* DELETE
* --------------------------------------------------------------------------------
*
* delete document from the passed collection based upon certain criteria
*
* @usage : $this->mongo_db->delete('foo', $data = array());
*/
public function delete($collection = "")
{
if (empty($collection))
{
show_error("No Mongo collection selected to delete from", 500);
}
try
{
$this->db->{$collection}->remove($this->wheres, array($this->query_safety => TRUE, 'justOne' => TRUE));
$this->_clear();
return (TRUE);
}
catch (MongoCursorException $e)
{
show_error("Delete of data into MongoDB failed: {$e->getMessage()}", 500);
}
}
/**
* --------------------------------------------------------------------------------
* DELETE_ALL
* --------------------------------------------------------------------------------
*
* Delete all documents from the passed collection based upon certain criteria
*
* @usage : $this->mongo_db->delete_all('foo', $data = array());
*/
public function delete_all($collection = "")
{
if (empty($collection))
{
show_error("No Mongo collection selected to delete from", 500);
}
try
{
$this->db->{$collection}->remove($this->wheres, array($this->query_safety => TRUE, 'justOne' => FALSE));
$this->_clear();
return (TRUE);
}
catch (MongoCursorException $e)
{
show_error("Delete of data into MongoDB failed: {$e->getMessage()}", 500);
}
}
/**
* --------------------------------------------------------------------------------
* COMMAND
* --------------------------------------------------------------------------------
*
* Runs a MongoDB command (such as GeoNear). See the MongoDB documentation for more usage scenarios:
* http://dochub.mongodb.org/core/commands
*
* @usage : $this->mongo_db->command(array('geoNear'=>'buildings', 'near'=>array(53.228482, -0.547847), 'num' => 10, 'nearSphere'=>true));
*/
public function command($query = array())
{
try
{
$run = $this->db->command($query);
return $run;
}
catch (MongoCursorException $e)
{
show_error("MongoDB command failed to execute: {$e->getMessage()}", 500);
}
}
/**
* --------------------------------------------------------------------------------
* ADD_INDEX
* --------------------------------------------------------------------------------
*
* Ensure an index of the keys in a collection with optional parameters. To set values to descending order,
* you must pass values of either -1, FALSE, 'desc', or 'DESC', else they will be
* set to 1 (ASC).
*
* @usage : $this->mongo_db->add_index($collection, array('first_name' => 'ASC', 'last_name' => -1), array('unique' => TRUE));
*/
public function add_index($collection = "", $keys = array(), $options = array())
{
if (empty($collection))
{
show_error("No Mongo collection specified to add index to", 500);
}
if (empty($keys) || ! is_array($keys))
{
show_error("Index could not be created to MongoDB Collection because no keys were specified", 500);
}
foreach ($keys as $col => $val)
{
if($val == -1 || $val === FALSE || strtolower($val) == 'desc')
{
$keys[$col] = -1;
}
else
{
$keys[$col] = 1;
}
}
if ($this->db->{$collection}->ensureIndex($keys, $options) == TRUE)
{
$this->_clear();
return ($this);
}
else
{
show_error("An error occured when trying to add an index to MongoDB Collection", 500);
}
}
/**
* --------------------------------------------------------------------------------
* REMOVE_INDEX
* --------------------------------------------------------------------------------
*
* Remove an index of the keys in a collection. To set values to descending order,
* you must pass values of either -1, FALSE, 'desc', or 'DESC', else they will be
* set to 1 (ASC).
*
* @usage : $this->mongo_db->remove_index($collection, array('first_name' => 'ASC', 'last_name' => -1));
*/
public function remove_index($collection = "", $keys = array())
{
if (empty($collection))
{
show_error("No Mongo collection specified to remove index from", 500);
}
if (empty($keys) || ! is_array($keys))
{
show_error("Index could not be removed from MongoDB Collection because no keys were specified", 500);
}
if ($this->db->{$collection}->deleteIndex($keys, $options) == TRUE)
{
$this->_clear();
return ($this);
}
else
{
show_error("An error occured when trying to remove an index from MongoDB Collection", 500);
}
}
/**
* --------------------------------------------------------------------------------
* REMOVE_ALL_INDEXES
* --------------------------------------------------------------------------------
*
* Remove all indexes from a collection.
*
* @usage : $this->mongo_db->remove_all_index($collection);
*/
public function remove_all_indexes($collection = "")
{
if (empty($collection))
{
show_error("No Mongo collection specified to remove all indexes from", 500);
}
$this->db->{$collection}->deleteIndexes();
$this->_clear();
return ($this);
}
/**
* --------------------------------------------------------------------------------
* LIST_INDEXES
* --------------------------------------------------------------------------------
*
* Lists all indexes in a collection.
*
* @usage : $this->mongo_db->list_indexes($collection);
*/
public function list_indexes($collection = "")
{
if (empty($collection))
{
show_error("No Mongo collection specified to remove all indexes from", 500);
}
return ($this->db->{$collection}->getIndexInfo());
}
/**
* --------------------------------------------------------------------------------
* CONNECT TO MONGODB
* --------------------------------------------------------------------------------
*
* Establish a connection to MongoDB using the connection string generated in
* the connection_string() method. If 'mongo_persist_key' was set to true in the
* config file, establish a persistent connection. We allow for only the 'persist'
* option to be set because we want to establish a connection immediately.
*/
private function connect()
{
$options = array();
if ($this->persist === TRUE)
{
$options['persist'] = isset($this->persist_key) && !empty($this->persist_key) ? $this->persist_key : 'ci_mongo_persist';
}
try
{
$this->connection = new Mongo($this->connection_string, $options);
$this->db = $this->connection->{$this->dbname};
return ($this);
}
catch (MongoConnectionException $e)
{
if($this->CI->config->item('mongo_supress_connect_error'))
{
show_error("Unable to connect to MongoDB", 500);
}
else
{
show_error("Unable to connect to MongoDB: {$e->getMessage()}", 500);
}
}
}
/**
* --------------------------------------------------------------------------------
* BUILD CONNECTION STRING
* --------------------------------------------------------------------------------
*
* Build the connection string from the config file.
*/
private function connection_string()
{
$this->CI->config->load($this->config_file);
$this->host = trim($this->CI->config->item('mongo_host'));
$this->port = trim($this->CI->config->item('mongo_port'));
$this->user = trim($this->CI->config->item('mongo_user'));
$this->pass = trim($this->CI->config->item('mongo_pass'));
$this->dbname = trim($this->CI->config->item('mongo_db'));
$this->persist = trim($this->CI->config->item('mongo_persist'));
$this->persist_key = trim($this->CI->config->item('mongo_persist_key'));
$this->query_safety = trim($this->CI->config->item('mongo_query_safety'));
$dbhostflag = (bool)$this->CI->config->item('host_db_flag');
$connection_string = "mongodb://";
if (empty($this->host))
{
show_error("The Host must be set to connect to MongoDB", 500);
}
if (empty($this->dbname))
{
show_error("The Database must be set to connect to MongoDB", 500);
}
if ( ! empty($this->user) && ! empty($this->pass))
{
$connection_string .= "{$this->user}:{$this->pass}@";
}
if (isset($this->port) && ! empty($this->port))
{
$connection_string .= "{$this->host}:{$this->port}";
}
else
{
$connection_string .= "{$this->host}";
}
if ($dbhostflag === TRUE)
{
$this->connection_string = trim($connection_string) . '/' . $this->dbname;
}
else
{
$this->connection_string = trim($connection_string);
}
}
/**
* --------------------------------------------------------------------------------
* _clear
* --------------------------------------------------------------------------------
*
* Resets the class variables to default settings
*/
private function _clear()
{
$this->selects = array();
$this->wheres = array();
$this->limit = 999999;
$this->offset = 0;
$this->sorts = array();
}
/**
* --------------------------------------------------------------------------------
* WHERE INITIALIZER
* --------------------------------------------------------------------------------
*
* Prepares parameters for insertion in $wheres array().
*/
private function _where_init($param)
{
if ( ! isset($this->wheres[$param]))
{
$this->wheres[ $param ] = array();
}
}
}
// EOF