Enum ImageQueryExpr

pub enum ImageQueryExpr {
    Tag(String),
    And(Box<ImageQueryExpr>, Box<ImageQueryExpr>),
    Or(Box<ImageQueryExpr>, Box<ImageQueryExpr>),
    Not(Box<ImageQueryExpr>),
    DateUntil(DateTime<Utc>),
    DateSince(DateTime<Utc>),
}

Represents a logical tag-based query expression.

Variants

Tag(String)

A single tag condition.

And(Box<ImageQueryExpr>, Box<ImageQueryExpr>)

Logical AND of two subexpressions.

Or(Box<ImageQueryExpr>, Box<ImageQueryExpr>)

Logical OR of two subexpressions.

Not(Box<ImageQueryExpr>)

Logical NOT of a subexpression.

DateUntil(DateTime<Utc>)

A condition to filter results until a specific date.

DateSince(DateTime<Utc>)

A condition to filter results since a specific date.

Implementations

impl ImageQueryExpr

pub fn tag<T: Into<String>>(tag: T) -> Self

Creates a query expression from a single tag.

Arguments

• tag - A tag to be used in the query as a condition.

Returns

• ImageQueryExpr - A query expression representing the tag condition.

pub fn and(self, other: impl Into<ImageQueryExpr>) -> Self

Combines two expressions with a logical AND.

Arguments

• other - The another expression to be combined with.

Returns

• ImageQueryExpr - A new expression representing the logical AND.

pub fn or(self, other: impl Into<ImageQueryExpr>) -> Self

Combines two expressions with a logical OR.

Arguments

• other - The another expression to be combined with.

Returns

• ImageQueryExpr - A new expression representing the logical OR.

pub fn not(expr: impl Into<ImageQueryExpr>) -> Self

Negates a query expression.

Arguments

• expr - The expression to be negated.

Returns

• ImageQueryExpr - A new expression representing the negation.

pub fn date_until(date: impl AsRef<str>) -> Self

Creates an expression to filter results until a specific date.

Arguments

• date - The date until which results should be filtered.

Returns

• ImageQueryExpr - A new expression with the date condition.

pub fn date_since(date: impl AsRef<str>) -> Self

Creates an expression to filter results since a specific date.

Arguments

• date - The date since which results should be filtered.

Returns

• ImageQueryExpr - A new expression with the date condition.

pub fn to_sql(&self) -> (String, Vec<String>)

Converts the query expression into an SQL WHERE clause and its bound parameters.

Returns

• (String, Vec<String>): A tuple containing the SQL fragment and the corresponding parameter values.

Trait Implementations

impl Clone for ImageQueryExpr

fn clone(&self) -> ImageQueryExpr

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ImageQueryExpr

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

Formats the value using the given formatter.

impl PartialEq for ImageQueryExpr

fn eq(&self, other: &ImageQueryExpr) -> 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 StructuralPartialEq for ImageQueryExpr