Struct ProcessContext 

pub struct ProcessContext {
    pub record_index: usize,
    pub batch_size: usize,
    pub output_format: Option<String>,
    pub metadata: HashMap<String, String>,
}

Context passed to post-processors during processing.

Fields

record_index: usize

Current record index in the batch

batch_size: usize

Total records in the batch

output_format: Option<String>

Current output format (csv, json, parquet)

metadata: HashMap<String, String>

Additional context data

Implementations

impl ProcessContext

pub fn new(record_index: usize, batch_size: usize) -> Self

Create a new processing context.

pub fn with_format(self, format: impl Into<String>) -> Self

Set the output format.

pub fn with_metadata( self, key: impl Into<String>, value: impl Into<String>, ) -> Self

Add metadata.

pub fn is_first(&self) -> bool

Check if processing first record.

pub fn is_last(&self) -> bool

Check if processing last record.

Trait Implementations

impl Clone for ProcessContext

fn clone(&self) -> ProcessContext

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ProcessContext

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

Formats the value using the given formatter.

impl Default for ProcessContext

fn default() -> ProcessContext

Returns the “default value” for a type.