Enum GraphPattern

pub enum GraphPattern {
    Bgp {
        patterns: Vec<TriplePattern>,
    },
    Path {
        subject: TermPattern,
        path: PropertyPathExpression,
        object: TermPattern,
    },
    Join {
        left: Box<GraphPattern>,
        right: Box<GraphPattern>,
    },
    LeftJoin {
        left: Box<GraphPattern>,
        right: Box<GraphPattern>,
        expression: Option<Expression>,
    },
    Lateral {
        left: Box<GraphPattern>,
        right: Box<GraphPattern>,
    },
    Filter {
        expr: Expression,
        inner: Box<GraphPattern>,
    },
    Union {
        left: Box<GraphPattern>,
        right: Box<GraphPattern>,
    },
    Graph {
        name: NamedNodePattern,
        inner: Box<GraphPattern>,
    },
    Extend {
        inner: Box<GraphPattern>,
        variable: Variable,
        expression: Expression,
    },
    Minus {
        left: Box<GraphPattern>,
        right: Box<GraphPattern>,
    },
    Values {
        variables: Vec<Variable>,
        bindings: Vec<Vec<Option<GroundTerm>>>,
    },
    OrderBy {
        inner: Box<GraphPattern>,
        expression: Vec<OrderExpression>,
    },
    Project {
        inner: Box<GraphPattern>,
        variables: Vec<Variable>,
    },
    Distinct {
        inner: Box<GraphPattern>,
    },
    Reduced {
        inner: Box<GraphPattern>,
    },
    Slice {
        inner: Box<GraphPattern>,
        start: usize,
        length: Option<usize>,
    },
    Group {
        inner: Box<GraphPattern>,
        variables: Vec<Variable>,
        aggregates: Vec<(Variable, AggregateExpression)>,
    },
    Service {
        name: NamedNodePattern,
        inner: Box<GraphPattern>,
        silent: bool,
    },
}

A SPARQL query graph pattern.

Variants

Bgp

A basic graph pattern.

Fields

patterns: Vec<TriplePattern>

Path

A property path pattern.

Fields

subject: TermPattern

path: PropertyPathExpression

object: TermPattern

Join

Join.

Fields

left: Box<GraphPattern>

right: Box<GraphPattern>

LeftJoin

LeftJoin.

Fields

left: Box<GraphPattern>

right: Box<GraphPattern>

expression: Option<Expression>

Lateral

Lateral join i.e. evaluate right for all result row of left

Fields

left: Box<GraphPattern>

right: Box<GraphPattern>

Filter

Filter.

Fields

expr: Expression

inner: Box<GraphPattern>

Union

Union.

Fields

left: Box<GraphPattern>

right: Box<GraphPattern>

Graph

Fields

name: NamedNodePattern

inner: Box<GraphPattern>

Extend

Extend.

Fields

inner: Box<GraphPattern>

variable: Variable

expression: Expression

Minus

Minus.

Fields

left: Box<GraphPattern>

right: Box<GraphPattern>

Values

A table used to provide inline values

Fields

variables: Vec<Variable>

bindings: Vec<Vec<Option<GroundTerm>>>

OrderBy

OrderBy.

Fields

inner: Box<GraphPattern>

expression: Vec<OrderExpression>

Project

Project.

Fields

inner: Box<GraphPattern>

variables: Vec<Variable>

Distinct

Distinct.

Fields

inner: Box<GraphPattern>

Reduced

Reduced.

Fields

inner: Box<GraphPattern>

Slice

Slice.

Fields

inner: Box<GraphPattern>

start: usize

length: Option<usize>

Group

Group.

Fields

inner: Box<GraphPattern>

variables: Vec<Variable>

aggregates: Vec<(Variable, AggregateExpression)>

Service

Service.

Fields

name: NamedNodePattern

inner: Box<GraphPattern>

silent: bool

Implementations

impl GraphPattern

pub fn on_in_scope_variable<'a>(&'a self, callback: impl FnMut(&'a Variable))

Calls callback on each in-scope variable occurrence.

Trait Implementations

impl Clone for GraphPattern

fn clone(&self) -> GraphPattern

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GraphPattern

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

Formats the value using the given formatter.

impl Default for GraphPattern

fn default() -> GraphPattern

Returns the “default value” for a type.

impl Display for GraphPattern

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

Formats the value using the given formatter.

impl From<&GraphPattern> for GraphPattern

fn from(pattern: &GraphPattern) -> GraphPattern

Converts to this type from the input type.

impl Hash for GraphPattern

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for GraphPattern

fn eq(&self, other: &GraphPattern) -> 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 Eq for GraphPattern

impl StructuralPartialEq for GraphPattern