Trait rorm_db::executor::QueryStrategy

source · 
pub trait QueryStrategy: QueryStrategyResult + QueryStrategyImpl { }
Expand description

Define how a query is send to and results retrieved from the database.

This trait is implemented on the following unit structs:

  • Nothing retrieves nothing
  • Optional retrieves an optional row
  • One retrieves a single row
  • Stream retrieves many rows in a stream
  • All retrieves many rows in a vector
  • AffectedRows returns the number of rows affected by the query

This trait has an associated Result<'result> type which is returned by Executor::execute. To avoid boxing, these types are quite big.

Each of those unit structs’ docs (follow links above) contains an easy to read impl Trait version of the actual types.

Implementors§