Enum MultiBackend

pub enum MultiBackend {
    Postgresql(<PgConnection as Connection>::Backend),
    Sqlite(<SqliteConnection as Connection>::Backend),
}

Variants

Postgresql(<PgConnection as Connection>::Backend)

Sqlite(<SqliteConnection as Connection>::Backend)

Implementations

impl MultiBackend

pub fn lookup_sql_type<ST>(lookup: &mut dyn Any) -> MultiTypeMetadata

where <PgConnection as Connection>::Backend: HasSqlType<ST>, <SqliteConnection as Connection>::Backend: HasSqlType<ST>,

impl MultiBackend

pub fn walk_variant_ast<'b, T>( ast_node: &'b T, pass: AstPass<'_, 'b, Self>, ) -> QueryResult<()>

where T: QueryFragment<<PgConnection as Connection>::Backend> + QueryFragment<<SqliteConnection as Connection>::Backend>,

Trait Implementations

impl Backend for MultiBackend

type QueryBuilder = MultiQueryBuilder

The concrete [QueryBuilder] implementation for this backend.

type RawValue<'a> = MultiRawValue<'a>

The actual type given to FromSql, with lifetimes applied. This type should not be used directly.

type BindCollector<'a> = MultiBindCollector<'a>

The concrete BindCollector implementation for this backend.

impl<'conn, 'query> Field<'conn, MultiBackend> for MultiField<'conn, 'query>

fn field_name(&self) -> Option<&str>

The name of the current field

fn value(&self) -> Option<<MultiBackend as Backend>::RawValue<'_>>

Get the value representing the current field in the raw representation as it is transmitted by the database

fn is_null(&self) -> bool

Checks whether this field is null or not.

impl FromSql<BigInt, MultiBackend> for i64

fn from_sql(bytes: <MultiBackend as Backend>::RawValue<'_>) -> Result<Self>

See the trait documentation.

fn from_nullable_sql( bytes: Option<<DB as Backend>::RawValue<'_>>, ) -> Result<Self, Box<dyn Error + Sync + Send>>

A specialized variant of from_sql for handling null values.

impl FromSql<Binary, MultiBackend> for Vec<u8>

fn from_sql(bytes: <MultiBackend as Backend>::RawValue<'_>) -> Result<Self>

See the trait documentation.

fn from_nullable_sql( bytes: Option<<DB as Backend>::RawValue<'_>>, ) -> Result<Self, Box<dyn Error + Sync + Send>>

A specialized variant of from_sql for handling null values.

impl FromSql<Bool, MultiBackend> for bool

fn from_sql(bytes: <MultiBackend as Backend>::RawValue<'_>) -> Result<Self>

See the trait documentation.

fn from_nullable_sql( bytes: Option<<DB as Backend>::RawValue<'_>>, ) -> Result<Self, Box<dyn Error + Sync + Send>>

A specialized variant of from_sql for handling null values.

impl FromSql<Date, MultiBackend> for NaiveDate

fn from_sql(bytes: <MultiBackend as Backend>::RawValue<'_>) -> Result<Self>

See the trait documentation.

fn from_nullable_sql( bytes: Option<<DB as Backend>::RawValue<'_>>, ) -> Result<Self, Box<dyn Error + Sync + Send>>

A specialized variant of from_sql for handling null values.

impl FromSql<Double, MultiBackend> for f64

fn from_sql(bytes: <MultiBackend as Backend>::RawValue<'_>) -> Result<Self>

See the trait documentation.

fn from_nullable_sql( bytes: Option<<DB as Backend>::RawValue<'_>>, ) -> Result<Self, Box<dyn Error + Sync + Send>>

A specialized variant of from_sql for handling null values.

impl FromSql<Float, MultiBackend> for f32

fn from_sql(bytes: <MultiBackend as Backend>::RawValue<'_>) -> Result<Self>

See the trait documentation.

fn from_nullable_sql( bytes: Option<<DB as Backend>::RawValue<'_>>, ) -> Result<Self, Box<dyn Error + Sync + Send>>

A specialized variant of from_sql for handling null values.

impl FromSql<Integer, MultiBackend> for i32

fn from_sql(bytes: <MultiBackend as Backend>::RawValue<'_>) -> Result<Self>

See the trait documentation.

fn from_nullable_sql( bytes: Option<<DB as Backend>::RawValue<'_>>, ) -> Result<Self, Box<dyn Error + Sync + Send>>

A specialized variant of from_sql for handling null values.

impl FromSql<SmallInt, MultiBackend> for i16

fn from_sql(bytes: <MultiBackend as Backend>::RawValue<'_>) -> Result<Self>

See the trait documentation.

fn from_nullable_sql( bytes: Option<<DB as Backend>::RawValue<'_>>, ) -> Result<Self, Box<dyn Error + Sync + Send>>

A specialized variant of from_sql for handling null values.

impl FromSql<Text, MultiBackend> for String

fn from_sql(bytes: <MultiBackend as Backend>::RawValue<'_>) -> Result<Self>

See the trait documentation.

fn from_nullable_sql( bytes: Option<<DB as Backend>::RawValue<'_>>, ) -> Result<Self, Box<dyn Error + Sync + Send>>

A specialized variant of from_sql for handling null values.

impl FromSql<Time, MultiBackend> for NaiveTime

fn from_sql(bytes: <MultiBackend as Backend>::RawValue<'_>) -> Result<Self>

See the trait documentation.

fn from_nullable_sql( bytes: Option<<DB as Backend>::RawValue<'_>>, ) -> Result<Self, Box<dyn Error + Sync + Send>>

A specialized variant of from_sql for handling null values.

impl FromSql<Timestamp, MultiBackend> for NaiveDateTime

fn from_sql(bytes: <MultiBackend as Backend>::RawValue<'_>) -> Result<Self>

See the trait documentation.

fn from_nullable_sql( bytes: Option<<DB as Backend>::RawValue<'_>>, ) -> Result<Self, Box<dyn Error + Sync + Send>>

A specialized variant of from_sql for handling null values.

impl HasSqlType<BigInt> for MultiBackend

fn metadata(lookup: &mut Self::MetadataLookup) -> Self::TypeMetadata

Fetch the metadata for the given type

impl HasSqlType<Binary> for MultiBackend

fn metadata(lookup: &mut Self::MetadataLookup) -> Self::TypeMetadata

Fetch the metadata for the given type

impl HasSqlType<Bool> for MultiBackend

fn metadata(lookup: &mut Self::MetadataLookup) -> Self::TypeMetadata

Fetch the metadata for the given type

impl HasSqlType<Date> for MultiBackend

fn metadata(lookup: &mut Self::MetadataLookup) -> Self::TypeMetadata

Fetch the metadata for the given type

impl HasSqlType<Double> for MultiBackend

fn metadata(lookup: &mut Self::MetadataLookup) -> Self::TypeMetadata

Fetch the metadata for the given type

impl HasSqlType<Float> for MultiBackend

fn metadata(lookup: &mut Self::MetadataLookup) -> Self::TypeMetadata

Fetch the metadata for the given type

impl HasSqlType<Integer> for MultiBackend

fn metadata(lookup: &mut Self::MetadataLookup) -> Self::TypeMetadata

Fetch the metadata for the given type

impl HasSqlType<SmallInt> for MultiBackend

fn metadata(lookup: &mut Self::MetadataLookup) -> Self::TypeMetadata

Fetch the metadata for the given type

impl HasSqlType<Text> for MultiBackend

fn metadata(lookup: &mut Self::MetadataLookup) -> Self::TypeMetadata

Fetch the metadata for the given type

impl HasSqlType<Time> for MultiBackend

fn metadata(lookup: &mut Self::MetadataLookup) -> Self::TypeMetadata

Fetch the metadata for the given type

impl HasSqlType<Timestamp> for MultiBackend

fn metadata(lookup: &mut Self::MetadataLookup) -> Self::TypeMetadata

Fetch the metadata for the given type

impl<'a, L> IntoBoxedClause<'a, MultiBackend> for LimitOffsetClause<LimitClause<L>, NoOffsetClause>

where LimitClause<L>: QueryFragment<MultiBackend> + Send + 'static,

type BoxedClause = BoxedLimitOffsetClause<'a, MultiBackend>

Resulting type

fn into_boxed(self) -> Self::BoxedClause

Convert the given query node in it’s boxed representation

impl<'a, L, O> IntoBoxedClause<'a, MultiBackend> for LimitOffsetClause<LimitClause<L>, OffsetClause<O>>

where LimitClause<L>: QueryFragment<MultiBackend> + Send + 'static, OffsetClause<O>: QueryFragment<MultiBackend> + Send + 'static,

type BoxedClause = BoxedLimitOffsetClause<'a, MultiBackend>

Resulting type

fn into_boxed(self) -> Self::BoxedClause

Convert the given query node in it’s boxed representation

impl<'a> IntoBoxedClause<'a, MultiBackend> for LimitOffsetClause<NoLimitClause, NoOffsetClause>

type BoxedClause = BoxedLimitOffsetClause<'a, MultiBackend>

Resulting type

fn into_boxed(self) -> Self::BoxedClause

Convert the given query node in it’s boxed representation

impl<'a, O> IntoBoxedClause<'a, MultiBackend> for LimitOffsetClause<NoLimitClause, OffsetClause<O>>

where OffsetClause<O>: QueryFragment<MultiBackend> + Send + 'static,

type BoxedClause = BoxedLimitOffsetClause<'a, MultiBackend>

Resulting type

fn into_boxed(self) -> Self::BoxedClause

Convert the given query node in it’s boxed representation

impl QueryFragment<MultiBackend> for BoxedLimitOffsetClause<'_, MultiBackend>

fn walk_ast<'b>( &'b self, pass: AstPass<'_, 'b, MultiBackend>, ) -> QueryResult<()>

Walk over this QueryFragment for all passes.

impl<L, O> QueryFragment<MultiBackend> for LimitOffsetClause<L, O>

where Self: QueryFragment<<PgConnection as Connection>::Backend> + QueryFragment<<SqliteConnection as Connection>::Backend>,

fn walk_ast<'b>( &'b self, pass: AstPass<'_, 'b, MultiBackend>, ) -> QueryResult<()>

Walk over this QueryFragment for all passes.

impl<'conn, 'query> Row<'conn, MultiBackend> for MultiRow<'conn, 'query>

type Field<'a> = MultiField<'a, 'a> where Self: 'a, 'conn: 'a

Field type returned by a Row implementation

fn field_count(&self) -> usize

Get the number of fields in the current row

fn get<'b, I>(&'b self, idx: I) -> Option<Self::Field<'b>>

where Self: RowIndex<I>, 'conn: 'b,

Get the field with the provided index from the row.

fn get_value<ST, T, I>(&self, idx: I) -> Result<T, Box<dyn Error + Sync + Send>>

where Self: RowIndex<I>, T: FromSql<ST, DB>,

Get a deserialized value with the provided index from the row.

impl SqlDialect for MultiBackend

type ReturningClause = MultiReturningClause

Configures how this backend supports RETURNING clauses

type OnConflictClause = DoesNotSupportOnConflictClause

Configures how this backend supports ON CONFLICT clauses

type InsertWithDefaultKeyword = MultiInsertWithDefaultKeyword

Configures how this backend handles the bare DEFAULT keyword for inserting the default value in a INSERT INTO VALUES clause

type BatchInsertSupport = MultiBatchInsertSupport

Configures how this backend handles Batch insert statements

type DefaultValueClauseForInsert = MultiDefaultValueClauseForInsert

Configures how this backend handles the DEFAULT VALUES clause for insert statements.

type EmptyFromClauseSyntax = MultiEmptyFromClauseSyntax

Configures how this backend handles empty FROM clauses for select statements.

type ExistsSyntax = MultiExistsSyntax

Configures how this backend handles EXISTS() expressions.

type ArrayComparison = MultiArrayComparisonSyntax

Configures how this backend handles IN() and NOT IN() expressions.

type ConcatClause = MultiConcatClauseSyntax

Configures how this backend handles the Concat clauses in select statements.

type SelectStatementSyntax = MultiSelectStatementSyntax

Configures how this backend structures SELECT queries

type AliasSyntax = MultiAliasSyntax

Configures how this backend structures SELECT queries

type WindowFrameClauseGroupSupport = MultiWindowFrameClauseGroupSupport

Configures how this backend support the GROUP frame unit for window functions

type WindowFrameExclusionSupport = MultiWindowFrameExclusionSupport

Configures how this backend supports frame exclusion clauses

type AggregateFunctionExpressions = MultiAggregateFunctionExpressions

Configures how this backend supports aggregate function expressions

type BuiltInWindowFunctionRequireOrder = MultiBuiltInWindowFunctionRequireOrder

Configures whether built-in window functions require order clauses for this backend or not

impl ToSql<BigInt, MultiBackend> for i64

fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, MultiBackend>) -> Result

See the trait documentation.

impl ToSql<Binary, MultiBackend> for [u8]

fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, MultiBackend>) -> Result

See the trait documentation.

impl ToSql<Bool, MultiBackend> for bool

fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, MultiBackend>) -> Result

See the trait documentation.

impl ToSql<Date, MultiBackend> for NaiveDate

fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, MultiBackend>) -> Result

See the trait documentation.

impl ToSql<Double, MultiBackend> for f64

fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, MultiBackend>) -> Result

See the trait documentation.

impl ToSql<Float, MultiBackend> for f32

fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, MultiBackend>) -> Result

See the trait documentation.

impl ToSql<Integer, MultiBackend> for i32

fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, MultiBackend>) -> Result

See the trait documentation.

impl ToSql<SmallInt, MultiBackend> for i16

fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, MultiBackend>) -> Result

See the trait documentation.

impl ToSql<Text, MultiBackend> for str

fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, MultiBackend>) -> Result

See the trait documentation.

impl ToSql<Time, MultiBackend> for NaiveTime

fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, MultiBackend>) -> Result

See the trait documentation.

impl ToSql<Timestamp, MultiBackend> for NaiveDateTime

fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, MultiBackend>) -> Result

See the trait documentation.

impl TypeMetadata for MultiBackend

type TypeMetadata = MultiTypeMetadata

The actual type used to represent metadata.

type MetadataLookup = dyn Any

The type used for runtime lookup of metadata.

impl DieselReserveSpecialization for MultiBackend

impl TrustedBackend for MultiBackend