php封装的mongodb操作类代码

/* -------------------------------------------------------------------------------- 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($collection = "") {
if (emptyempty($collection)) {
$this->error("No Mongo collection selected to delete from",'justOne' => FALSE));
return(TRUE);
} catch (MongoCursorException $e) {
$this->error("Delete of data into MongoDB failed: {$e->getMessage()}",500);
}
}

/* -------------------------------------------------------------------------------- ADD_INDEX -------------------------------------------------------------------------------- Ensure an index of the keys in a collection with optional parameters. To set values to descending order,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(),$options = array()) {
if (emptyempty($collection)) {
$this->error("No Mongo collection specified to add index to",500);
} if (emptyempty($keys) || !is_array($keys)) {
$this->error("Index could not be created to MongoDB Collection because no keys were specified",500);
} foreach ($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 {
$this->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,else they will be set to 1 (ASC). @usage = $this->mongo_db->remove_index($collection,'last_name' => -1)); /
public function remove_index($collection = "",$keys = array()) {
if (emptyempty($collection)) {
$this->error("No Mongo collection specified to remove index from",500);
} if (emptyempty($keys) || !is_array($keys)) {
$this->error("Index could not be removed from MongoDB Collection because no keys were specified",500);
} if ($this->db->{$collection}->deleteIndex($keys,$options) == TRUE) {
$this->clear();
return($this);
} else {
$this->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($collection = "") {
if (emptyempty($collection)) {
$this->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($collection = "") {
if (emptyempty($collection)) {
$this->error("No Mongo collection specified to remove all indexes from",500);
} return($this->db->{$collection}->getIndexInfo());
}

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