Struct QueryBuilder 

pub struct QueryBuilder { /* private fields */ }

Implementations

impl QueryBuilder

pub fn match_attr<V: Value>( &mut self, attr: PropertyHandle, value: V, ) -> Result<NodeHandle, LatticeError>

Find vertices by attribute value.

pub fn match_outgoing( &mut self, label: PropertyHandle, subject: NodeHandle, ) -> Result<NodeHandle, LatticeError>

All vertices that are pointed to by subject via label.

pub fn match_incoming( &mut self, label: PropertyHandle, target: NodeHandle, ) -> Result<NodeHandle, LatticeError>

All vertices that point to target via label.

pub fn group_and( &mut self, children: Vec<NodeHandle>, ) -> Result<NodeHandle, LatticeError>

Find a vertex that satisfies multiple features within children.

pub fn group_or( &mut self, children: Vec<NodeHandle>, ) -> Result<NodeHandle, LatticeError>

Find a vertex that satisfies one of multiple features within children.

pub fn difference( &mut self, include: NodeHandle, exclude: NodeHandle, ) -> Result<NodeHandle, LatticeError>

Find a vertex that satisfies include, but does not satisfy exclude.

impl QueryBuilder

pub fn new() -> Self

pub fn set_root(&mut self, handle: NodeHandle)

pub fn get_root(&self) -> Option<NodeHandle>

impl QueryBuilder

pub fn compile(&self) -> Result<PreparedQuery, LatticeError>

Trait Implementations

impl Default for QueryBuilder

fn default() -> Self

Returns the “default value” for a type.