Enum ProjectionExpression 

pub enum ProjectionExpression {
    Variable {
        variable: String,
    },
    Property {
        variable: String,
        property: String,
    },
    Id {
        variable: String,
    },
    RelationshipType {
        variable: String,
    },
    Literal(Value),
    Coalesce(Vec<ProjectionExpression>),
    VectorDistance {
        metric: VectorDistance,
        left: Box<ProjectionExpression>,
        right: Box<ProjectionExpression>,
    },
    JsonValue {
        expression: Box<ProjectionExpression>,
        path: String,
    },
    Left {
        expression: Box<ProjectionExpression>,
        length: usize,
    },
    Lower(Box<ProjectionExpression>),
    DatePart {
        part: DatePart,
        variable: String,
        property: String,
    },
    DefaultIfNullOrEq {
        variable: String,
        property: String,
        empty: Value,
        default: Value,
    },
    DefaultIfNull {
        variable: String,
        property: String,
        default: Value,
    },
    CasePropertyNotNullOrEq {
        variable: String,
        property: String,
        empty: Value,
        non_empty: Value,
        null_or_empty: Value,
    },
    CasePropertyEqualsRank {
        variable: String,
        property: String,
        branches: Vec<(Value, Value)>,
        default: Value,
    },
    CaseLowerPropertyDefault {
        variable: String,
        property: String,
        default: Value,
    },
    CaseCoalesceDifferenceFloorZero {
        variable: String,
        terms: Vec<CoalesceDifferenceProjectionTerm>,
    },
    Case {
        operand: Option<Box<ProjectionExpression>>,
        branches: Vec<(ProjectionExpression, ProjectionExpression)>,
        otherwise: Option<Box<ProjectionExpression>>,
    },
    Binary {
        left: Box<ProjectionExpression>,
        op: ScalarBinaryOp,
        right: Box<ProjectionExpression>,
    },
    Not(Box<ProjectionExpression>),
    IsNull {
        expression: Box<ProjectionExpression>,
        negated: bool,
    },
    CaseEntitySearchRank(Box<CaseEntitySearchRankProjection>),
    CaseColumnSearchRank(Box<CaseColumnSearchRankProjection>),
    ColumnDefaultIfNullOrEq {
        column: String,
        property: String,
        empty: Value,
        default: Value,
    },
    ColumnValueDefaultIfNull {
        column: String,
        default: Value,
    },
    ColumnValueCasePropertyNotNullOrEq {
        column: String,
        empty: Value,
        non_empty: Value,
        null_or_empty: Value,
    },
    Column(String),
    ColumnProperty {
        column: String,
        property: String,
    },
}

Variants

Variable

Fields

variable: String

Property

Fields

variable: String

property: String

Id

Fields

variable: String

RelationshipType

Fields

variable: String

Literal(Value)

Coalesce(Vec<ProjectionExpression>)

VectorDistance

Fields

metric: VectorDistance

left: Box<ProjectionExpression>

right: Box<ProjectionExpression>

JsonValue

Fields

expression: Box<ProjectionExpression>

path: String

Left

Fields

expression: Box<ProjectionExpression>

length: usize

Lower(Box<ProjectionExpression>)

DatePart

Fields

part: DatePart

variable: String

property: String

DefaultIfNullOrEq

Fields

variable: String

property: String

empty: Value

default: Value

DefaultIfNull

Fields

variable: String

property: String

default: Value

CasePropertyNotNullOrEq

Fields

variable: String

property: String

empty: Value

non_empty: Value

null_or_empty: Value

CasePropertyEqualsRank

Fields

variable: String

property: String

branches: Vec<(Value, Value)>

default: Value

CaseLowerPropertyDefault

Fields

variable: String

property: String

default: Value

CaseCoalesceDifferenceFloorZero

Fields

variable: String

terms: Vec<CoalesceDifferenceProjectionTerm>

Case

Fields

operand: Option<Box<ProjectionExpression>>

branches: Vec<(ProjectionExpression, ProjectionExpression)>

otherwise: Option<Box<ProjectionExpression>>

Binary

Fields

left: Box<ProjectionExpression>

op: ScalarBinaryOp

right: Box<ProjectionExpression>

Not(Box<ProjectionExpression>)

IsNull

Fields

expression: Box<ProjectionExpression>

negated: bool

CaseEntitySearchRank(Box<CaseEntitySearchRankProjection>)

CaseColumnSearchRank(Box<CaseColumnSearchRankProjection>)

ColumnDefaultIfNullOrEq

Fields

column: String

property: String

empty: Value

default: Value

ColumnValueDefaultIfNull

Fields

column: String

default: Value

ColumnValueCasePropertyNotNullOrEq

Fields

column: String

empty: Value

non_empty: Value

null_or_empty: Value

Column(String)

ColumnProperty

Fields

column: String

property: String

Implementations

impl ProjectionExpression

pub fn all_children( &self, visit: impl FnMut(&ProjectionExpression) -> bool, ) -> bool

Visits immediate scalar children in evaluation order, stopping on false.

impl ProjectionExpression

pub fn try_for_each_child_mut<E>( &mut self, visit: impl FnMut(&mut Self) -> Result<(), E>, ) -> Result<(), E>

Mutates immediate scalar children in evaluation order; errors are not rolled back.

Trait Implementations

impl Clone for ProjectionExpression

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 ProjectionExpression

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

Formats the value using the given formatter.

impl Eq for ProjectionExpression

impl PartialEq for ProjectionExpression

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ProjectionExpression