Overview
Classes: Array, BSONReader, BSONTimestamp, BSONWriter, Binary, ConcreteElement, Connection, Database, Document, Element, ElementFindByName, ElementPtrCompare, ElementTraits, JavaScriptCode, Message, MessageHeader, ObjectId, OpMsgCursor, OpMsgMessage, PooledConnection, PooledReplicaSetConnection, ReadPreference, RegularExpression, ReplicaSet, ReplicaSetConnection, ReplicaSetURI, ServerDescription, TopologyChangeNotification, TopologyDescription
Types Aliases: NullValue
Classes
class Array
This class represents a BSON Array. 
class BSONReader
Class for reading BSON using a Poco::BinaryReader
struct BSONTimestamp
class BSONWriter
Class for writing BSON using a Poco::BinaryWriter.
class Binary
Implements BSON Binary.
class ConcreteElement
class Connection
Represents a connection to a MongoDB server
using the MongoDB wire protocol.
class Database
Database is a helper class for creating requests.
class Document
Represents a MongoDB (BSON) document.
class Element
Represents an Element of a Document or an Array.
class ElementFindByName
struct ElementPtrCompare
Comparison functor for Element::Ptr with transparent lookup support (C++14+).
struct ElementTraits
class JavaScriptCode
Represents JavaScript type in BSON.
class Message
Base class for all messages send or retrieved from MongoDB server.
class MessageHeader
Represents the message header which is always prepended to a
MongoDB request or response message.
class ObjectId
ObjectId is a 12-byte BSON type, constructed using:
- a 4-byte timestamp,
- a 3-byte machine identifier,
- a 2-byte process id, and
- a 3-byte counter, starting with a random value.
class OpMsgCursor
OpMsgCursor is a helper class for querying multiple documents using OpMsgMessage.
class OpMsgMessage
This class represents a request/response (OP_MSG) to send requests and receive responses to/from MongoDB.
class PooledConnection
Helper class for borrowing and returning a connection automatically from a pool.
class PooledReplicaSetConnection
Helper class for borrowing and returning a ReplicaSetConnection
automatically from a pool.
class ReadPreference
Configures read preference mode and constraints for MongoDB operations.
class RegularExpression
Represents a regular expression in BSON format.
class ReplicaSet
Class for working with a MongoDB replica set.
class ReplicaSetConnection
Wrapper around Connection that provides automatic retry and failover
for MongoDB replica set operations.
class ReplicaSetURI
Class for parsing and generating MongoDB replica set URIs.
class ServerDescription
Represents the state of a single MongoDB server in a replica set.
class TopologyChangeNotification
Notification sent when MongoDB replica set topology changes.
class TopologyDescription
Maintains the complete MongoDB replica set topology state.
Types Aliases
NullValue
using NullValue = Nullable < unsigned char >;
Variables
BSON_MAX_DOCUMENT_SIZE 
static constexpr Poco::Int32 BSON_MAX_DOCUMENT_SIZE = 16 * 1024 * 1024;
Minimum BSON document size (5 bytes): 4-byte size field + 1-byte null terminator.
BSON_MIN_DOCUMENT_SIZE
static constexpr Poco::Int32 BSON_MIN_DOCUMENT_SIZE = 5;
Minimum BSON string size (1 byte for the null terminator).
BSON_MIN_STRING_SIZE
static constexpr Poco::Int32 BSON_MIN_STRING_SIZE = 1;
Maximum OP_MSG message size (48 MB) per MongoDB specification.
DEFAULT_LOCAL_THRESHOLD_US
static constexpr Poco::Int64 DEFAULT_LOCAL_THRESHOLD_US = 15000;
OP_MSG_MAX_SIZE
static constexpr Poco::Int32 OP_MSG_MAX_SIZE = 48 * 1024 * 1024;
Default local threshold for "nearest" read preference (15 ms = 15000 µs). Servers within this threshold of the minimum RTT are eligible for selection.