Enum Filter 

#[non_exhaustive]
pub enum Filter {
    Compare {
        column: String,
        op: CompareOp,
        value: Scalar,
    },
    IsNull(String),
    Contains {
        column: String,
        text: String,
    },
    All(Vec<Filter>),
    Any(Vec<Filter>),
    Not(Box<Filter>),
}

Which rows a view shows. Dates, times, timestamps and durations compare as their integer count of units (milliseconds since the epoch for Timestamp(Millisecond)).

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Compare

column op value; unknown when the column is null.

Fields

column: String

Column name.

op: CompareOp

Comparison.

value: Scalar

Literal.

IsNull(String)

The column is null. Works on columns of any type.

Contains

The string column contains text (case-sensitive); unknown when null.

Fields

column: String

Column name.

text: String

Text searched for.

All(Vec<Filter>)

Every filter holds (true for none).

Any(Vec<Filter>)

Some filter holds (false for none).

Not(Box<Filter>)

The filter does not hold (unknown stays unknown).

Implementations

impl Filter

pub fn compare(column: impl Into<String>, op: CompareOp, value: Scalar) -> Self

column op value.

pub fn is_null(column: impl Into<String>) -> Self

The column is null.

pub fn is_not_null(column: impl Into<String>) -> Self

The column is not null.

pub fn contains(column: impl Into<String>, text: impl Into<String>) -> Self

The string column contains text.

pub fn all(filters: impl IntoIterator<Item = Filter>) -> Self

Every one of filters holds.

pub fn any(filters: impl IntoIterator<Item = Filter>) -> Self

At least one of filters holds.

pub fn not(filter: Filter) -> Self

filter does not hold.

Trait Implementations

impl Clone for Filter

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Filter

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

Formats the value using the given formatter.

impl PartialEq for Filter

fn eq(&self, other: &Self) -> bool

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Filter