Module connection

Types related to database connections

Modules

statement_cachei-implement-a-third-party-backend-and-opt-into-breaking-changes

Helper types for prepared statement caching

Structs

AnsiTransactionManager

An implementation of TransactionManager which can be used for backends which use ANSI standard syntax for savepoints such as SQLite and PostgreSQL.

DefaultLoadingMode

The default loading mode provided by a Connection.

DynInstrumentationi-implement-a-third-party-backend-and-opt-into-breaking-changes

An optional dyn instrumentation.

InTransactionStatusi-implement-a-third-party-backend-and-opt-into-breaking-changes

Various status fields to track the status of a transaction manager with a started transaction

StrQueryHelperi-implement-a-third-party-backend-and-opt-into-breaking-changes

A helper type that allows printing out str slices

ValidTransactionManagerStatusi-implement-a-third-party-backend-and-opt-into-breaking-changes

Valid transaction status for the manager. Can return the current transaction depth

Enums

CacheSize

Set cache size for a connection

InstrumentationEvent

This enum describes possible connection events that can be handled by an Instrumentation implementation

TransactionDepthChange

Represents a change to apply to the depth of a transaction

TransactionManagerStatusi-implement-a-third-party-backend-and-opt-into-breaking-changes

Status of the transaction manager

Traits

BoxableConnection

A variant of the Connection trait that is usable with dynamic dispatch

Connection

A connection to a database

ConnectionSealedi-implement-a-third-party-backend-and-opt-into-breaking-changes

This trait restricts who can implement Connection

DebugQuery

A helper trait for opaque query representations which allows to get a Display and Debug representation of the underlying type without exposing type specific details

Instrumentation

A type that provides an connection Instrumentation

LoadConnection

The specific part of a Connection which actually loads data from the database

MultiConnectionHelperi-implement-a-third-party-backend-and-opt-into-breaking-changes

This trait provides helper methods to convert a database lookup type to/from an std::any::Any reference. This is used internally by the #[derive(MultiConnection)] implementation

SimpleConnection

Perform simple operations on a backend.

TransactionManager

Manages the internal transaction state for a connection.

WithMetadataLookupi-implement-a-third-party-backend-and-opt-into-breaking-changes

Describes a connection with an underlying crate::sql_types::TypeMetadata::MetadataLookup

Functions

get_default_instrumentation

Get an instance of the default Instrumentation

set_default_instrumentation

Set a custom constructor for the default Instrumentation used by new connections