Enum Compare

pub enum Compare<'a> {
    Equals(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>),
    NotEquals(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>),
    LessThan(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>),
    LessThanOrEquals(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>),
    GreaterThan(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>),
    GreaterThanOrEquals(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>),
    In(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>),
    NotIn(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>),
    Like(Box<DatabaseValue<'a>>, Cow<'a, str>),
    NotLike(Box<DatabaseValue<'a>>, Cow<'a, str>),
    BeginsWith(Box<DatabaseValue<'a>>, Cow<'a, str>),
    NotBeginsWith(Box<DatabaseValue<'a>>, Cow<'a, str>),
    EndsInto(Box<DatabaseValue<'a>>, Cow<'a, str>),
    NotEndsInto(Box<DatabaseValue<'a>>, Cow<'a, str>),
    Null(Box<DatabaseValue<'a>>),
    NotNull(Box<DatabaseValue<'a>>),
    Between(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>),
    NotBetween(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>),
}

For modeling comparison expression

Variants

Equals(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>)

left = right

NotEquals(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>)

left <> right

LessThan(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>)

left < right

LessThanOrEquals(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>)

left <= right

GreaterThan(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>)

left > right

GreaterThanOrEquals(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>)

left >= right

In(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>)

left IN (..)

NotIn(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>)

left NOT IN (..)

Like(Box<DatabaseValue<'a>>, Cow<'a, str>)

left LIKE %..%

NotLike(Box<DatabaseValue<'a>>, Cow<'a, str>)

left NOT LIKE %..%

BeginsWith(Box<DatabaseValue<'a>>, Cow<'a, str>)

left LIKE ..%

NotBeginsWith(Box<DatabaseValue<'a>>, Cow<'a, str>)

left NOT LIKE ..%

EndsInto(Box<DatabaseValue<'a>>, Cow<'a, str>)

left LIKE %..

NotEndsInto(Box<DatabaseValue<'a>>, Cow<'a, str>)

left NOT LIKE %..

Null(Box<DatabaseValue<'a>>)

value IS NULL

NotNull(Box<DatabaseValue<'a>>)

value IS NOT NULL

Between(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>)

value BETWEEN left AND right

NotBetween(Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>, Box<DatabaseValue<'a>>)

value NOT BETWEEN left AND right

Trait Implementations

impl<'a> Clone for Compare<'a>

fn clone(&self) -> Compare<'a>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Debug for Compare<'a>

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

Formats the value using the given formatter.

impl<'a> From<Compare<'a>> for ConditionTree<'a>

fn from(cmp: Compare<'a>) -> Self

Converts to this type from the input type.

impl<'a> From<Compare<'a>> for Expression<'a>

fn from(cmp: Compare<'a>) -> Self

Converts to this type from the input type.

impl<'a> PartialEq for Compare<'a>

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> StructuralPartialEq for Compare<'a>