Enum CqlExpression 

pub enum CqlExpression {
    Literal(CqlLiteral),
    Column(CqlIdentifier),
    Parameter(u32),
    NamedParameter(String),
    Binary {
        left: Box<CqlExpression>,
        operator: CqlBinaryOperator,
        right: Box<CqlExpression>,
    },
    Unary {
        operator: CqlUnaryOperator,
        operand: Box<CqlExpression>,
    },
    Function {
        name: CqlIdentifier,
        args: Vec<CqlExpression>,
    },
    In {
        expression: Box<CqlExpression>,
        values: Vec<CqlExpression>,
    },
    Contains {
        column: CqlIdentifier,
        value: Box<CqlExpression>,
    },
    ContainsKey {
        column: CqlIdentifier,
        key: Box<CqlExpression>,
    },
    CollectionAccess {
        collection: Box<CqlExpression>,
        index: Box<CqlExpression>,
    },
    FieldAccess {
        object: Box<CqlExpression>,
        field: CqlIdentifier,
    },
    Case {
        when_clauses: Vec<CqlWhenClause>,
        else_clause: Option<Box<CqlExpression>>,
    },
    Cast {
        expression: Box<CqlExpression>,
        target_type: CqlDataType,
    },
}

CQL expression AST

Variants

Literal(CqlLiteral)

Literal value

Column(CqlIdentifier)

Column reference

Parameter(u32)

Parameter placeholder (?)

NamedParameter(String)

Named parameter (:name)

Binary

Binary operation (AND, OR, =, !=, <, >, etc.)

Fields

left: Box<CqlExpression>

operator: CqlBinaryOperator

right: Box<CqlExpression>

Unary

Unary operation (NOT, -)

Fields

operator: CqlUnaryOperator

operand: Box<CqlExpression>

Function

Function call

Fields

name: CqlIdentifier

args: Vec<CqlExpression>

In

IN clause

Fields

expression: Box<CqlExpression>

values: Vec<CqlExpression>

Contains

CONTAINS clause

Fields

column: CqlIdentifier

value: Box<CqlExpression>

ContainsKey

CONTAINS KEY clause

Fields

column: CqlIdentifier

key: Box<CqlExpression>

CollectionAccess

Collection access [index] or [key]

Fields

collection: Box<CqlExpression>

index: Box<CqlExpression>

FieldAccess

UDT field access (udt.field)

Fields

object: Box<CqlExpression>

field: CqlIdentifier

Case

CASE expression

Fields

when_clauses: Vec<CqlWhenClause>

else_clause: Option<Box<CqlExpression>>

Cast

Type cast (CAST)

Fields

expression: Box<CqlExpression>

target_type: CqlDataType

Trait Implementations

impl Clone for CqlExpression

fn clone(&self) -> CqlExpression

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CqlExpression

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CqlExpression

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for CqlExpression

fn eq(&self, other: &CqlExpression) -> 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 CqlExpression

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 CqlExpression