Trait sqlx_core::row::Row

source ·
pub trait Row: Sealed + Unpin + Send + Sync + 'static {
    type Database: Database;

    // Required methods
    fn columns(&self) -> &[<Self::Database as Database>::Column];
    fn try_get_raw<I>(
        &self,
        index: I
    ) -> Result<<Self::Database as HasValueRef<'_>>::ValueRef, Error>
       where I: ColumnIndex<Self>;

    // Provided methods
    fn is_empty(&self) -> bool { ... }
    fn len(&self) -> usize { ... }
    fn column<I>(&self, index: I) -> &<Self::Database as Database>::Column
       where I: ColumnIndex<Self> { ... }
    fn try_column<I>(
        &self,
        index: I
    ) -> Result<&<Self::Database as Database>::Column, Error>
       where I: ColumnIndex<Self> { ... }
    fn get<'r, T, I>(&'r self, index: I) -> T
       where I: ColumnIndex<Self>,
             T: Decode<'r, Self::Database> + Type<Self::Database> { ... }
    fn get_unchecked<'r, T, I>(&'r self, index: I) -> T
       where I: ColumnIndex<Self>,
             T: Decode<'r, Self::Database> { ... }
    fn try_get<'r, T, I>(&'r self, index: I) -> Result<T, Error>
       where I: ColumnIndex<Self>,
             T: Decode<'r, Self::Database> + Type<Self::Database> { ... }
    fn try_get_unchecked<'r, T, I>(&'r self, index: I) -> Result<T, Error>
       where I: ColumnIndex<Self>,
             T: Decode<'r, Self::Database> { ... }
}
Expand description

Represents a single row from the database.

This trait is sealed and cannot be implemented for types outside of SQLx.

Required Associated Types§

Required Methods§

source

fn columns(&self) -> &[<Self::Database as Database>::Column]

Gets all columns in this statement.

source

fn try_get_raw<I>( &self, index: I ) -> Result<<Self::Database as HasValueRef<'_>>::ValueRef, Error>where I: ColumnIndex<Self>,

Index into the database row and decode a single value.

Errors

Provided Methods§

source

fn is_empty(&self) -> bool

Returns true if this row has no columns.

source

fn len(&self) -> usize

Returns the number of columns in this row.

source

fn column<I>(&self, index: I) -> &<Self::Database as Database>::Columnwhere I: ColumnIndex<Self>,

Gets the column information at index.

A string index can be used to access a column by name and a usize index can be used to access a column by position.

Panics

Panics if index is out of bounds. See try_column for a non-panicking version.

source

fn try_column<I>( &self, index: I ) -> Result<&<Self::Database as Database>::Column, Error>where I: ColumnIndex<Self>,

Gets the column information at index or None if out of bounds.

source

fn get<'r, T, I>(&'r self, index: I) -> Twhere I: ColumnIndex<Self>, T: Decode<'r, Self::Database> + Type<Self::Database>,

Index into the database row and decode a single value.

A string index can be used to access a column by name and a usize index can be used to access a column by position.

Panics

Panics if the column does not exist or its value cannot be decoded into the requested type. See try_get for a non-panicking version.

source

fn get_unchecked<'r, T, I>(&'r self, index: I) -> Twhere I: ColumnIndex<Self>, T: Decode<'r, Self::Database>,

Index into the database row and decode a single value.

Unlike get, this method does not check that the type being returned from the database is compatible with the Rust type and blindly tries to decode the value.

Panics

Panics if the column does not exist or its value cannot be decoded into the requested type. See try_get_unchecked for a non-panicking version.

source

fn try_get<'r, T, I>(&'r self, index: I) -> Result<T, Error>where I: ColumnIndex<Self>, T: Decode<'r, Self::Database> + Type<Self::Database>,

Index into the database row and decode a single value.

A string index can be used to access a column by name and a usize index can be used to access a column by position.

Errors
source

fn try_get_unchecked<'r, T, I>(&'r self, index: I) -> Result<T, Error>where I: ColumnIndex<Self>, T: Decode<'r, Self::Database>,

Index into the database row and decode a single value.

Unlike try_get, this method does not check that the type being returned from the database is compatible with the Rust type and blindly tries to decode the value.

Errors

Implementors§