Enum Predicate 

pub enum Predicate {
    Eq {
        left: Expr,
        right: Expr,
    },
    Neq {
        left: Expr,
        right: Expr,
    },
    Gt {
        left: Expr,
        right: Expr,
    },
    Gte {
        left: Expr,
        right: Expr,
    },
    Lt {
        left: Expr,
        right: Expr,
    },
    Lte {
        left: Expr,
        right: Expr,
    },
    Between {
        value: Expr,
        min: Expr,
        max: Expr,
    },
    HasKey {
        property: String,
    },
    IsNull {
        property: String,
    },
    IsNotNull {
        property: String,
    },
    StartsWith {
        value: Expr,
        prefix: Expr,
    },
    EndsWith {
        value: Expr,
        suffix: Expr,
    },
    Contains {
        value: Expr,
        substring: Expr,
    },
    IsIn {
        value: Expr,
        values: Expr,
    },
    And {
        predicates: Vec<Predicate>,
    },
    Or {
        predicates: Vec<Predicate>,
    },
    Not {
        predicate: Box<Predicate>,
    },
    Compare {
        left: Expr,
        op: CompareOp,
        right: Expr,
    },
}

Predicate expression.

Variants

Eq

Equality comparison.

Fields

left: Expr

right: Expr

Neq

Inequality comparison.

Fields

left: Expr

right: Expr

Gt

Greater-than comparison.

Fields

left: Expr

right: Expr

Gte

Greater-than-or-equal comparison.

Fields

left: Expr

right: Expr

Lt

Less-than comparison.

Fields

left: Expr

right: Expr

Lte

Less-than-or-equal comparison.

Fields

left: Expr

right: Expr

Between

Inclusive range comparison.

Fields

value: Expr

min: Expr

max: Expr

HasKey

Property exists.

Fields

property: String

IsNull

Property is null or missing.

Fields

property: String

IsNotNull

Property exists and is not null.

Fields

property: String

StartsWith

String starts with prefix.

Fields

value: Expr

prefix: Expr

EndsWith

String ends with suffix.

Fields

value: Expr

suffix: Expr

Contains

String contains substring.

Fields

value: Expr

substring: Expr

IsIn

Value is in a list.

Fields

value: Expr

values: Expr

And

Logical AND.

Fields

predicates: Vec<Predicate>

Or

Logical OR.

Fields

predicates: Vec<Predicate>

Not

Logical NOT.

Fields

predicate: Box<Predicate>

Compare

Explicit expression comparison.

Fields

left: Expr

Left expression.

op: CompareOp

Operator.

right: Expr

Right expression.

Implementations

impl Predicate

pub fn eq( property: impl Into<String>, value: impl Into<PropertyInput>, ) -> Predicate

Create an equality predicate.

pub fn neq( property: impl Into<String>, value: impl Into<PropertyInput>, ) -> Predicate

Create a not-equals predicate.

pub fn gt( property: impl Into<String>, value: impl Into<PropertyInput>, ) -> Predicate

Create a greater-than predicate.

pub fn gte( property: impl Into<String>, value: impl Into<PropertyInput>, ) -> Predicate

Create a greater-than-or-equal predicate.

pub fn lt( property: impl Into<String>, value: impl Into<PropertyInput>, ) -> Predicate

Create a less-than predicate.

pub fn lte( property: impl Into<String>, value: impl Into<PropertyInput>, ) -> Predicate

Create a less-than-or-equal predicate.

pub fn between( property: impl Into<String>, min: impl Into<PropertyInput>, max: impl Into<PropertyInput>, ) -> Predicate

Create a between predicate.

pub fn has_key(property: impl Into<String>) -> Predicate

Create a has-key predicate.

pub fn is_null(property: impl Into<String>) -> Predicate

Create an is-null predicate.

pub fn is_not_null(property: impl Into<String>) -> Predicate

Create an is-not-null predicate.

pub fn starts_with( property: impl Into<String>, prefix: impl Into<String>, ) -> Predicate

Create a starts-with predicate.

pub fn ends_with( property: impl Into<String>, suffix: impl Into<String>, ) -> Predicate

Create an ends-with predicate.

pub fn contains( property: impl Into<String>, substring: impl Into<String>, ) -> Predicate

Create a contains predicate.

pub fn contains_param( property: impl Into<String>, param_name: impl Into<String>, ) -> Predicate

Create a parameterized contains predicate.

pub fn is_in( property: impl Into<String>, values: impl Into<PropertyValue>, ) -> Predicate

Create an IN predicate.

pub fn is_in_expr(property: impl Into<String>, values: Expr) -> Predicate

Create an IN predicate from an expression.

pub fn is_in_param( property: impl Into<String>, param_name: impl Into<String>, ) -> Predicate

Create a parameterized IN predicate.

pub fn and(predicates: Vec<Predicate>) -> Predicate

Combine predicates with AND.

pub fn or(predicates: Vec<Predicate>) -> Predicate

Combine predicates with OR.

pub fn not(predicate: Predicate) -> Predicate

Negate a predicate.

pub fn compare(left: Expr, op: CompareOp, right: Expr) -> Predicate

Create an expression comparison predicate.

pub fn eq_param( property: impl Into<String>, param_name: impl Into<String>, ) -> Predicate

Create a parameterized equality predicate.

pub fn neq_param( property: impl Into<String>, param_name: impl Into<String>, ) -> Predicate

Create a parameterized not-equals predicate.

pub fn gt_param( property: impl Into<String>, param_name: impl Into<String>, ) -> Predicate

Create a parameterized greater-than predicate.

pub fn gte_param( property: impl Into<String>, param_name: impl Into<String>, ) -> Predicate

Create a parameterized greater-than-or-equal predicate.

pub fn lt_param( property: impl Into<String>, param_name: impl Into<String>, ) -> Predicate

Create a parameterized less-than predicate.

pub fn lte_param( property: impl Into<String>, param_name: impl Into<String>, ) -> Predicate

Create a parameterized less-than-or-equal predicate.

Trait Implementations

impl Clone for Predicate

fn clone(&self) -> Predicate

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Predicate

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Predicate

fn deserialize<__D>( __deserializer: __D, ) -> Result<Predicate, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Predicate

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Predicate

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Predicate