Struct ExecutionContext 

pub struct ExecutionContext { /* private fields */ }

Execution context for a query.

The context provides access to:

• Query parameters (bound values for placeholders)
• Cancellation support
• Execution statistics
• Runtime configuration
• Graph storage access (for graph traversal queries)
• Vector index access (optional)
• Collection vector storage access (for named vectors)

Implementations

impl ExecutionContext

pub fn new() -> Self

Creates a new execution context without graph storage.

Use with_graph to add graph storage access.

pub fn with_parameters(parameters: HashMap<u32, Value>) -> Self

Creates a context with parameters.

pub fn with_graph(self, graph: Arc<dyn GraphAccessor>) -> Self

Sets the graph accessor for graph traversal operations.

This enables the query executor to perform actual graph traversals using the underlying storage.

pub fn graph(&self) -> &dyn GraphAccessor

Returns a reference to the graph accessor.

pub fn graph_arc(&self) -> Arc<dyn GraphAccessor>

Returns the graph accessor as an Arc.

pub fn with_vector_index_provider( self, provider: Arc<dyn VectorIndexProvider>, ) -> Self

Creates a context with a vector index provider.

pub fn set_vector_index_provider( &mut self, provider: Arc<dyn VectorIndexProvider>, )

Sets the vector index provider.

pub fn vector_index_provider(&self) -> Option<&dyn VectorIndexProvider>

Returns a reference to the vector index provider if one is set.

pub fn vector_index_provider_arc(&self) -> Option<Arc<dyn VectorIndexProvider>>

Returns a clone of the vector index provider Arc if one is set.

This is useful for operators that need to hold onto the provider for the duration of their execution.

pub fn with_collection_vector_provider( self, provider: Arc<dyn CollectionVectorProvider>, ) -> Self

Sets the collection vector provider for named vector storage.

pub fn set_collection_vector_provider( &mut self, provider: Arc<dyn CollectionVectorProvider>, )

Sets the collection vector provider.

pub fn collection_vector_provider( &self, ) -> Option<&dyn CollectionVectorProvider>

Returns a reference to the collection vector provider if one is set.

pub fn collection_vector_provider_arc( &self, ) -> Option<Arc<dyn CollectionVectorProvider>>

Returns a clone of the collection vector provider Arc if one is set.

pub fn set_parameter(&mut self, index: u32, value: Value)

Adds a parameter value.

pub fn get_parameter(&self, index: u32) -> Option<&Value>

Gets a parameter value.

pub fn parameters(&self) -> &HashMap<u32, Value>

Returns all parameters.

pub fn cancel(&self)

Cancels the query execution.

pub fn is_cancelled(&self) -> bool

Checks if the query has been cancelled.

pub fn stats(&self) -> &ExecutionStats

Returns the execution statistics.

pub fn config(&self) -> &ExecutionConfig

Returns the configuration.

pub fn config_mut(&mut self) -> &mut ExecutionConfig

Returns mutable configuration.

pub fn record_rows_read(&self, count: u64)

Records that rows were read.

pub fn record_rows_produced(&self, count: u64)

Records that rows were produced.

pub fn record_rows_filtered(&self, count: u64)

Records that rows were filtered.

pub fn with_config(self, config: ExecutionConfig) -> Self

Sets the execution configuration.

pub fn max_rows_in_memory(&self) -> usize

Returns the maximum rows in memory limit.

Returns 0 if the limit is disabled.

Trait Implementations

impl Debug for ExecutionContext

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

Formats the value using the given formatter.

impl Default for ExecutionContext

fn default() -> Self

Returns the “default value” for a type.