Struct GraphRegistry 

pub struct GraphRegistry { /* private fields */ }

The graphs defined in one session, by name. Names are compared as given (the DDL normalizes identifiers the way DataFusion does for tables).

Implementations

impl GraphRegistry

pub fn get(&self, name: &str) -> Option<Arc<PropertyGraph>>

The graph called name.

pub fn all(&self) -> Vec<Arc<PropertyGraph>>

Every graph, sorted by name.

pub fn put(&self, def: impl Into<PropertyGraph>) -> Option<Arc<PropertyGraph>>

Add or replace def; returns the definition it replaced.

pub fn put_with_files( &self, def: PropertyGraph, files: Vec<FileTable>, ) -> Option<Arc<PropertyGraph>>

Add or replace def, with the tables it opened from file paths.

pub fn remove(&self, name: &str) -> Option<Arc<PropertyGraph>>

Remove the graph called name; returns it if it existed.

pub fn file_table( &self, graph: &str, table: &TableReference, ) -> Option<Arc<dyn TableProvider>>

The table graph graph opened from the file path table, if table is one of its file tables.

pub fn names(&self) -> Vec<String>

The names of all graphs, sorted: for “did you mean” suggestions.

Trait Implementations

impl Debug for GraphRegistry

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

Formats the value using the given formatter.

impl Default for GraphRegistry

fn default() -> Self

Returns the “default value” for a type.