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