Struct Query

pub struct Query {
    pub name: String,
    pub ast: Query,
    pub predicates: Vec<String>,
    pub vars: Vec<String>,
    pub matches: Vec<Vec<Option<MatchVal>>>,
    pub types: BTreeMap<String, String>,
    pub circumscribed: Vec<bool>,
    pub gao: Vec<Vec<usize>>,
}

IR Query Representation All QueryField values are relative to the ordering given by the GAO

Fields

name: String

Predicate name

ast: Query

AST of the predicate, for use in error reporting

predicates: Vec<String>

List of predicates we are joining across

vars: Vec<String>

Map between variable numbers and names

matches: Vec<Vec<Option<MatchVal>>>

Indexed by query, then field, what restrictions are on that coordinate

types: BTreeMap<String, String>

Map between variables and their types

circumscribed: Vec<bool>

Whether a given clause is being circumscribed

gao: Vec<Vec<usize>>

For each predicate, how it should be projected in the ordering

Trait Implementations

impl Clone for Query

fn clone(&self) -> Query

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Query

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

Formats the value using the given formatter.

impl PartialEq for Query

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

impl StructuralPartialEq for Query