Enum FilterExpr 

pub enum FilterExpr {
    Eq {
        field: String,
        value: Value,
    },
    Ne {
        field: String,
        value: Value,
    },
    Lt {
        field: String,
        value: Value,
    },
    Le {
        field: String,
        value: Value,
    },
    Gt {
        field: String,
        value: Value,
    },
    Ge {
        field: String,
        value: Value,
    },
    In {
        field: String,
        values: Vec<Value>,
    },
    NotIn {
        field: String,
        values: Vec<Value>,
    },
    IsNull {
        field: String,
    },
    IsNotNull {
        field: String,
    },
    Like {
        field: String,
        pattern: String,
    },
    NotLike {
        field: String,
        pattern: String,
    },
    And(Vec<SimpleFilter>),
    Or(Vec<SimpleFilter>),
}

Filter expression for querying entities.

Note: This uses a flat design without recursive Box types to work with rkyv. And/Or contain Vec which is handled specially.

Variants

Eq

Field equals value.

Fields

field: String

value: Value

Ne

Field not equals value.

Fields

field: String

value: Value

Lt

Field less than value.

Fields

field: String

value: Value

Le

Field less than or equal to value.

Fields

field: String

value: Value

Gt

Field greater than value.

Fields

field: String

value: Value

Ge

Field greater than or equal to value.

Fields

field: String

value: Value

In

Field is in a set of values.

Fields

field: String

values: Vec<Value>

NotIn

Field is not in a set of values.

Fields

field: String

values: Vec<Value>

IsNull

Field is null.

Fields

field: String

IsNotNull

Field is not null.

Fields

field: String

Like

Field matches a LIKE pattern.

Fields

field: String

pattern: String

NotLike

Field does not match a LIKE pattern.

Fields

field: String

pattern: String

And(Vec<SimpleFilter>)

All conditions must be true (flat list, single level).

Or(Vec<SimpleFilter>)

At least one condition must be true (flat list, single level).

Implementations

impl FilterExpr

pub fn eq(field: impl Into<String>, value: impl Into<Value>) -> Self

Create an equality filter.

pub fn ne(field: impl Into<String>, value: impl Into<Value>) -> Self

Create a not-equal filter.

pub fn lt(field: impl Into<String>, value: impl Into<Value>) -> Self

Create a less-than filter.

pub fn le(field: impl Into<String>, value: impl Into<Value>) -> Self

Create a less-than-or-equal filter.

pub fn gt(field: impl Into<String>, value: impl Into<Value>) -> Self

Create a greater-than filter.

pub fn ge(field: impl Into<String>, value: impl Into<Value>) -> Self

Create a greater-than-or-equal filter.

pub fn in_values(field: impl Into<String>, values: Vec<Value>) -> Self

Create an IN filter.

pub fn not_in_values(field: impl Into<String>, values: Vec<Value>) -> Self

Create a NOT IN filter.

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

Create an IS NULL filter.

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

Create an IS NOT NULL filter.

pub fn like(field: impl Into<String>, pattern: impl Into<String>) -> Self

Create a LIKE filter.

pub fn and(exprs: Vec<SimpleFilter>) -> Self

Create an AND filter combining multiple simple expressions.

pub fn or(exprs: Vec<SimpleFilter>) -> Self

Create an OR filter combining multiple simple expressions.

Trait Implementations

impl Archive for FilterExpr

where String: Archive, Value: Archive, Vec<Value>: Archive, Vec<SimpleFilter>: Archive,

type Archived = ArchivedFilterExpr

The archived representation of this type.

type Resolver = FilterExprResolver

The resolver for this type. It must contain all the additional information from serializing needed to make the archived type from the normal type.

fn resolve( &self, resolver: <Self as Archive>::Resolver, out: Place<<Self as Archive>::Archived>, )

Creates the archived version of this value at the given position and writes it to the given output.

const COPY_OPTIMIZATION: CopyOptimization<Self> = _

An optimization flag that allows the bytes of this type to be copied directly to a writer instead of calling serialize.

impl Clone for FilterExpr

fn clone(&self) -> FilterExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FilterExpr

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FilterExpr

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<__D: Fallible + ?Sized> Deserialize<FilterExpr, __D> for Archived<FilterExpr>

where String: Archive, <String as Archive>::Archived: Deserialize<String, __D>, Value: Archive, <Value as Archive>::Archived: Deserialize<Value, __D>, Vec<Value>: Archive, <Vec<Value> as Archive>::Archived: Deserialize<Vec<Value>, __D>, Vec<SimpleFilter>: Archive, <Vec<SimpleFilter> as Archive>::Archived: Deserialize<Vec<SimpleFilter>, __D>,

fn deserialize( &self, deserializer: &mut __D, ) -> Result<FilterExpr, <__D as Fallible>::Error>

Deserializes using the given deserializer

impl From<FilterExpr> for Filter

fn from(expression: FilterExpr) -> Self

Converts to this type from the input type.

impl PartialEq for FilterExpr

fn eq(&self, other: &FilterExpr) -> 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<__S: Fallible + ?Sized> Serialize<__S> for FilterExpr

where String: Serialize<__S>, Value: Serialize<__S>, Vec<Value>: Serialize<__S>, Vec<SimpleFilter>: Serialize<__S>,

fn serialize( &self, serializer: &mut __S, ) -> Result<<Self as Archive>::Resolver, <__S as Fallible>::Error>

Writes the dependencies for the object and returns a resolver that can create the archived type.

impl Serialize for FilterExpr

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for FilterExpr