Enum FilterValue 

pub enum FilterValue {
    Null,
    Bool(bool),
    Int(i64),
    Float(f64),
    String(String),
    Json(Value),
    List(Vec<FilterValue>),
}

A filter value that can be used in comparisons.

Examples

use prax_query::FilterValue;

// From integers
let val: FilterValue = 42.into();
let val: FilterValue = 42i64.into();

// From strings
let val: FilterValue = "hello".into();
let val: FilterValue = String::from("world").into();

// From booleans
let val: FilterValue = true.into();

// From floats
let val: FilterValue = 3.14f64.into();

// Null value
let val = FilterValue::Null;

// From vectors
let val: FilterValue = vec![1, 2, 3].into();

// From Option (Some becomes value, None becomes Null)
let val: FilterValue = Some(42).into();
let val: FilterValue = Option::<i32>::None.into();
assert!(val.is_null());

Variants

Null

Null value.

Bool(bool)

Boolean value.

Int(i64)

Integer value.

Float(f64)

Float value.

String(String)

String value.

Json(Value)

JSON value.

List(Vec<FilterValue>)

List of values.

Implementations

impl FilterValue

pub fn is_null(&self) -> bool

Check if this is a null value.

pub fn to_sql_placeholder(&self, param_index: usize) -> String

Convert to SQL parameter placeholder.

Trait Implementations

impl Clone for FilterValue

fn clone(&self) -> FilterValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FilterValue

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FilterValue

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<&str> for FilterValue

fn from(v: &str) -> Self

Converts to this type from the input type.

impl From<CompactValue> for FilterValue

fn from(v: CompactValue) -> Self

Converts to this type from the input type.

impl<T: Into<FilterValue>> From<Option<T>> for FilterValue

fn from(v: Option<T>) -> Self

Converts to this type from the input type.

impl From<String> for FilterValue

fn from(v: String) -> Self

Converts to this type from the input type.

impl<T: Into<FilterValue>> From<Vec<T>> for FilterValue

fn from(v: Vec<T>) -> Self

Converts to this type from the input type.

impl From<bool> for FilterValue

fn from(v: bool) -> Self

Converts to this type from the input type.

impl From<f64> for FilterValue

fn from(v: f64) -> Self

Converts to this type from the input type.

impl From<i32> for FilterValue

fn from(v: i32) -> Self

Converts to this type from the input type.

impl From<i64> for FilterValue

fn from(v: i64) -> Self

Converts to this type from the input type.

impl PartialEq for FilterValue

fn eq(&self, other: &FilterValue) -> 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 Serialize for FilterValue

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 FilterValue