Struct Expression 

pub struct Expression {
    pub id: Option<String>,
    pub extension: Vec<Extension>,
    pub description: Option<String>,
    pub name: Option<Code>,
    pub language: Option<Code>,
    pub expression: Option<String>,
    pub reference: Option<Uri>,
}

An expression that can be used to generate a value

A expression that is evaluated in a specified context and returns a value. The context of use of the expression must specify the context in which the expression is evaluated, and how the result of the expression is used.

Fields

id: Option<String>

Unique id for inter-element referencing

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

extension: Vec<Extension>

Additional content defined by implementations

May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

description: Option<String>

Natural language description of the condition

A brief, natural language description of the condition that effectively communicates the intended semantics.

name: Option<Code>

Short name assigned to expression for reuse

A short name assigned to the expression to allow for multiple reuse of the expression in the context where it is defined.

language: Option<Code>

text/cql | text/fhirpath | application/x-fhir-query | etc.

The media type of the language for the expression.

expression: Option<String>

Expression in specified language

An expression in the specified language that returns a value.

reference: Option<Uri>

Where the expression is found

A URI that defines where the expression is found.

Trait Implementations

impl Clone for Expression

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 Expression

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

Formats the value using the given formatter.

impl Default for Expression

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Expression

fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error>

Deserialize this value from the given Serde deserializer.

impl Eq for Expression

impl Json for Expression

fn to_json(&self) -> Result<Object, EncodeError>

The JSON object.

fn from_json(object: &Object, path: &mut Path) -> Result<Self, DecodeError>

Decodes object, refusing unknown properties.

impl PartialEq for Expression

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Expression

fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Expression