mongo::DBClientBase Class Reference

abstract class that implements the core db operations More...

#include <dbclient.h>

Inheritance diagram for mongo::DBClientBase:

List of all members.

Public Member Functions
WriteConcern	getWriteConcern () const
void	setWriteConcern (WriteConcern w)
virtual auto_ptr< DBClientCursor >	query (const string &ns, Query query, int nToReturn=0, int nToSkip=0, const BSONObj *fieldsToReturn=0, int queryOptions=0, int batchSize=0)
	send a query to the database.
virtual auto_ptr< DBClientCursor >	getMore (const string &ns, long long cursorId, int nToReturn=0, int options=0)
	don't use this - called automatically by DBClientCursor for you
virtual void	insert (const string &ns, BSONObj obj, int flags=0)
	insert an object into the database
virtual void	insert (const string &ns, const vector< BSONObj > &v, int flags=0)
	insert a vector of objects into the database
virtual void	remove (const string &ns, Query q, bool justOne=0)
	remove matching objects from the database
virtual void	update (const string &ns, Query query, BSONObj obj, bool upsert=false, bool multi=false)
	updates objects matching query
virtual bool	isFailed () const =0
virtual void	killCursor (long long cursorID)=0
virtual bool	callRead (Message &toSend, Message &response)=0
virtual ConnectionString::ConnectionType	type () const =0
virtual double	getSoTimeout () const =0
Protected Attributes
WriteConcern	_writeConcern

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Detailed Description

abstract class that implements the core db operations

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Member Function Documentation

auto_ptr< DBClientCursor > mongo::DBClientBase::getMore	(	const string &	ns,
		long long	cursorId,
		int	nToReturn = 0,
		int	options = 0
	)			[virtual]

don't use this - called automatically by DBClientCursor for you

Parameters:

cursorId

id of cursor to retrieve

Returns:

an handle to a previously allocated cursor

Exceptions:

AssertionException

Implements mongo::DBClientInterface.

Reimplemented in mongo::SyncClusterConnection.

auto_ptr< DBClientCursor > mongo::DBClientBase::query	(	const string &	ns,
		Query	query,
		int	nToReturn = 0,
		int	nToSkip = 0,
		const BSONObj *	fieldsToReturn = 0,
		int	queryOptions = 0,
		int	batchSize = 0
	)			[virtual]

send a query to the database.

Parameters:

	ns	namespace to query, format is <dbname>.<collectname>[.<collectname>]*
	query	query to perform on the collection. this is a BSONObj (binary JSON) You may format as { query: { ... }, orderby: { ... } } to specify a sort order.
	nToReturn	n to return (i.e., limit). 0 = unlimited
	nToSkip	start with the nth item
	fieldsToReturn	optional template of which fields to select. if unspecified, returns all fields
	queryOptions	see options enum at top of this file

Returns:

cursor. 0 if error (connection failure)

Exceptions:

AssertionException

Implements mongo::DBClientInterface.

Reimplemented in mongo::DBClientConnection, mongo::DBClientReplicaSet, and mongo::SyncClusterConnection.

void mongo::DBClientBase::remove	(	const string &	ns,
		Query	q,
		bool	justOne = 0
	)			[virtual]

remove matching objects from the database

Parameters:

justOne

if this true, then once a single match is found will stop

Implements mongo::DBClientInterface.

Reimplemented in mongo::DBClientReplicaSet, and mongo::SyncClusterConnection.

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The documentation for this class was generated from the following files:

• dbclient.h
• dbclient.cpp