Struct ExecutionContext 

pub struct ExecutionContext {
    pub source_table: Arc<DataTable>,
    pub temp_tables: TempTableRegistry,
    pub variables: HashMap<String, String>,
}

Context for statement execution

Holds all state needed to execute SQL statements including:

• Base source table(s)
• Temporary tables (#table syntax)
• Variables (for future use)
• Execution configuration

Fields

source_table: Arc<DataTable>

The primary source table (typically from CSV/JSON file)

temp_tables: TempTableRegistry

Registry of temporary tables created during script execution

variables: HashMap<String, String>

Variables for template expansion and substitution

Implementations

impl ExecutionContext

pub fn new(source_table: Arc<DataTable>) -> Self

Create a new execution context with a source table

pub fn with_dual() -> Self

Create a context with DUAL table (for queries without FROM clause)

pub fn resolve_table(&self, name: &str) -> Arc<DataTable>

Resolve a table name to an Arc

Arguments

• name - Table name, which may be:
  • A temp table (starts with ‘#’)
  • The base table name
  • “DUAL” for the special DUAL table

Returns

Arc for the requested table, or the source table as fallback

pub fn resolve_table_strict(&self, name: &str) -> Result<Arc<DataTable>>

Try to resolve a table, returning an error if temp table not found

pub fn store_temp_table( &mut self, name: String, table: Arc<DataTable>, ) -> Result<()>

Store a result as a temporary table

pub fn has_temp_table(&self, name: &str) -> bool

Check if a temporary table exists

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

Get all temporary table names

pub fn set_variable(&mut self, name: String, value: String)

Set a variable for template expansion

pub fn get_variable(&self, name: &str) -> Option<&String>

Get a variable value

pub fn clear_temp_tables(&mut self)

Clear all temporary tables (useful between script executions)

pub fn clear_variables(&mut self)

Clear all variables

pub fn source_table_info(&self) -> (String, usize, usize)

Get source table metadata

Trait Implementations

impl Clone for ExecutionContext

fn clone(&self) -> ExecutionContext

Returns a duplicate of the value.

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

Performs copy-assignment from source.