Struct aws_sdk_amplifyuibuilder::types::Predicate

#[non_exhaustive]
pub struct Predicate {
    pub or: Option<Vec<Predicate>>,
    pub and: Option<Vec<Predicate>>,
    pub field: Option<String>,
    pub operator: Option<String>,
    pub operand: Option<String>,
    pub operand_type: Option<String>,
}

Stores information for generating Amplify DataStore queries. Use a Predicate to retrieve a subset of the data in a collection.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

or: Option<Vec<Predicate>>

A list of predicates to combine logically.

and: Option<Vec<Predicate>>

A list of predicates to combine logically.

field: Option<String>

The field to query.

operator: Option<String>

The operator to use to perform the evaluation.

operand: Option<String>

The value to use when performing the evaluation.

operand_type: Option<String>

The type of value to use when performing the evaluation.

Implementations

impl Predicate

pub fn or(&self) -> &[Predicate]

A list of predicates to combine logically.

If no value was sent for this field, a default will be set. If you want to determine if no value was sent, use .or.is_none().

pub fn and(&self) -> &[Predicate]

A list of predicates to combine logically.

If no value was sent for this field, a default will be set. If you want to determine if no value was sent, use .and.is_none().

pub fn field(&self) -> Option<&str>

The field to query.

pub fn operator(&self) -> Option<&str>

The operator to use to perform the evaluation.

pub fn operand(&self) -> Option<&str>

The value to use when performing the evaluation.

pub fn operand_type(&self) -> Option<&str>

The type of value to use when performing the evaluation.

impl Predicate

pub fn builder() -> PredicateBuilder

Creates a new builder-style object to manufacture Predicate.

Trait Implementations

impl Clone for Predicate

fn clone(&self) -> Predicate

Returns a copy 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

Formats the value using the given formatter.

impl PartialEq for Predicate

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Predicate