Struct diesel::migration::MigrationVersion

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pub struct MigrationVersion<'a>(/* private fields */);
Expand description

A migration version identifier

This is used by the migration harness to place migrations in order, therefore two different instances of this type must be sortable

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impl<'a> MigrationVersion<'a>

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pub fn as_owned(&self) -> MigrationVersion<'static>

Convert the current migration version into an owned variant with static life time

Trait Implementations§

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impl<'a, '__expr> AsExpression<Nullable<Text>> for &'__expr MigrationVersion<'a>

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type Expression = Bound<Nullable<Text>, &'__expr MigrationVersion<'a>>

The expression being returned
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fn as_expression(self) -> Self::Expression

Perform the conversion
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impl<'a> AsExpression<Nullable<Text>> for MigrationVersion<'a>

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type Expression = Bound<Nullable<Text>, MigrationVersion<'a>>

The expression being returned
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fn as_expression(self) -> Self::Expression

Perform the conversion
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impl<'a, '__expr> AsExpression<Text> for &'__expr MigrationVersion<'a>

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type Expression = Bound<Text, &'__expr MigrationVersion<'a>>

The expression being returned
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fn as_expression(self) -> Self::Expression

Perform the conversion
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impl<'a> AsExpression<Text> for MigrationVersion<'a>

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type Expression = Bound<Text, MigrationVersion<'a>>

The expression being returned
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fn as_expression(self) -> Self::Expression

Perform the conversion
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impl<'a> Debug for MigrationVersion<'a>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<'a> Display for MigrationVersion<'a>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<'a> From<&'a String> for MigrationVersion<'a>

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fn from(s: &'a String) -> Self

Converts to this type from the input type.
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impl<'a> From<&'a str> for MigrationVersion<'a>

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fn from(s: &'a str) -> Self

Converts to this type from the input type.
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impl<'a> From<String> for MigrationVersion<'a>

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fn from(s: String) -> Self

Converts to this type from the input type.
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impl<'a, DB> FromSql<Text, DB> for MigrationVersion<'a>
where String: FromSql<Text, DB>, DB: Backend,

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fn from_sql(bytes: DB::RawValue<'_>) -> Result<Self>

See the trait documentation.
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fn from_nullable_sql(bytes: Option<DB::RawValue<'_>>) -> Result<Self>

A specialized variant of from_sql for handling null values. Read more
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impl<'a> Hash for MigrationVersion<'a>

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<'a> Ord for MigrationVersion<'a>

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fn cmp(&self, other: &MigrationVersion<'a>) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl<'a> PartialEq for MigrationVersion<'a>

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fn eq(&self, other: &MigrationVersion<'a>) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<'a> PartialOrd for MigrationVersion<'a>

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fn partial_cmp(&self, other: &MigrationVersion<'a>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl<'a, __DB, __ST> Queryable<__ST, __DB> for MigrationVersion<'a>
where __DB: Backend, __ST: SingleValue, Self: FromSql<__ST, __DB>,

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type Row = MigrationVersion<'a>

The Rust type you’d like to map from. Read more
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fn build(row: Self::Row) -> Result<Self>

Construct an instance of this type
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impl<'a, __DB> ToSql<Nullable<Text>, __DB> for MigrationVersion<'a>
where __DB: Backend, Self: ToSql<Text, __DB>,

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

See the trait documentation.
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impl<'a, DB> ToSql<Text, DB> for MigrationVersion<'a>
where Cow<'a, str>: ToSql<Text, DB>, DB: Backend,

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

See the trait documentation.
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impl<'a> Eq for MigrationVersion<'a>

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impl<'a> StructuralPartialEq for MigrationVersion<'a>

Auto Trait Implementations§

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impl<'a> Freeze for MigrationVersion<'a>

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impl<'a> RefUnwindSafe for MigrationVersion<'a>

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impl<'a> Send for MigrationVersion<'a>

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impl<'a> Sync for MigrationVersion<'a>

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impl<'a> Unpin for MigrationVersion<'a>

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impl<'a> UnwindSafe for MigrationVersion<'a>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, ST, DB> FromSqlRow<ST, DB> for T
where T: Queryable<ST, DB>, ST: SqlTypeOrSelectable, DB: Backend, <T as Queryable<ST, DB>>::Row: FromStaticSqlRow<ST, DB>,

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fn build_from_row<'a>( row: &impl Row<'a, DB>, ) -> Result<T, Box<dyn Error + Sync + Send>>

See the trait documentation.
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impl<T, ST, DB> FromStaticSqlRow<ST, DB> for T
where DB: Backend, T: FromSql<ST, DB>, ST: SingleValue,

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fn build_from_row<'a>( row: &impl Row<'a, DB>, ) -> Result<T, Box<dyn Error + Sync + Send>>

See the trait documentation
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoSql for T

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fn into_sql<T>(self) -> AsExprOf<Self, T>

Convert self to an expression for Diesel’s query builder. Read more
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fn as_sql<'a, T>(&'a self) -> AsExprOf<&'a Self, T>

Convert &self to an expression for Diesel’s query builder. Read more
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impl<T, ST, DB> StaticallySizedRow<ST, DB> for T
where ST: SqlTypeOrSelectable + TupleSize, T: Queryable<ST, DB>, DB: Backend,

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const FIELD_COUNT: usize = const FIELD_COUNT: usize = <ST as crate::util::TupleSize>::SIZE;

The number of fields that this type will consume.
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impl<T> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V