Struct diesel::migration::MigrationVersion

pub struct MigrationVersion<'a>(_);

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

Implementations

impl<'a> MigrationVersion<'a>

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

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

Trait Implementations

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

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

The expression being returned

fn as_expression(self) -> Self::Expression

Perform the conversion

impl<'a> AsExpression<Nullable<Text>> for MigrationVersion<'a>

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

The expression being returned

fn as_expression(self) -> Self::Expression

Perform the conversion

impl<'expr, 'a> AsExpression<Text> for &'expr MigrationVersion<'a>

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

The expression being returned

fn as_expression(self) -> Self::Expression

Perform the conversion

impl<'a> AsExpression<Text> for MigrationVersion<'a>

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

The expression being returned

fn as_expression(self) -> Self::Expression

Perform the conversion

impl<'a> Debug for MigrationVersion<'a>

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

Formats the value using the given formatter.

impl<'a> Display for MigrationVersion<'a>

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

Formats the value using the given formatter.

impl<'a> From<&'a String> for MigrationVersion<'a>

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

Converts to this type from the input type.

impl<'a> From<&'a str> for MigrationVersion<'a>

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

Converts to this type from the input type.

impl<'a> From<String> for MigrationVersion<'a>

fn from(s: String) -> Self

Converts to this type from the input type.

impl<'a, DB> FromSql<Text, DB> for MigrationVersion<'a> where
    String: FromSql<Text, DB>,
    DB: Backend, 

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

See the trait documentation.

fn from_nullable_sql(bytes: Option<RawValue<'_, DB>>) -> Result<Self>

A specialized variant of from_sql for handling null values.

impl<'a> Hash for MigrationVersion<'a>

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

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl<'a> Ord for MigrationVersion<'a>

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

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self where
    Self: PartialOrd<Self>, 

Restrict a value to a certain interval.

impl<'a> PartialEq<MigrationVersion<'a>> for MigrationVersion<'a>

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

This method tests for self and other values to be equal, and is used by ==.

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.

impl<'a> PartialOrd<MigrationVersion<'a>> for MigrationVersion<'a>

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

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'a, __ST, __DB> Queryable<__ST, __DB> for MigrationVersion<'a> where
    __DB: Backend,
    __ST: SingleValue,
    Self: FromSql<__ST, __DB>, 

type Row = MigrationVersion<'a>

The Rust type you’d like to map from.

fn build(row: Self::Row) -> Result<Self>

Construct an instance of this type

impl<'a, __DB> ToSql<Nullable<Text>, __DB> for MigrationVersion<'a> where
    __DB: Backend,
    Self: ToSql<Text, __DB>, 

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

See the trait documentation.

impl<'a, DB> ToSql<Text, DB> for MigrationVersion<'a> where
    Cow<'a, str>: ToSql<Text, DB>,
    DB: Backend, 

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

See the trait documentation.

impl<'a> Eq for MigrationVersion<'a>

impl<'a> StructuralEq for MigrationVersion<'a>

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