Struct DataTableBuilder 

pub struct DataTableBuilder { /* private fields */ }

Builder for constructing a DataTable column-by-column.

Collects columns (as Arrow arrays) and a schema, then builds a RecordBatch.

Implementations

impl DataTableBuilder

pub fn new(schema: Schema) -> Self

Create a builder from an Arrow schema.

pub fn with_fields(fields: Vec<Field>) -> Self

Create a builder with just field definitions (convenience).

pub fn add_f64_column(&mut self, values: Vec<f64>) -> &mut Self

Add a Float64 column.

pub fn add_i64_column(&mut self, values: Vec<i64>) -> &mut Self

Add an Int64 column.

pub fn add_string_column(&mut self, values: Vec<&str>) -> &mut Self

Add a String column.

pub fn add_bool_column(&mut self, values: Vec<bool>) -> &mut Self

Add a Boolean column.

pub fn add_timestamp_column(&mut self, values: Vec<i64>) -> &mut Self

Add a TimestampMicrosecond column.

pub fn add_column(&mut self, array: ArrayRef) -> &mut Self

Add a pre-built Arrow array column.

pub fn finish(self) -> Result<DataTable, ArrowError>

Build the DataTable. Returns an error if schema/column mismatch.

pub fn finish_with_type_name( self, type_name: String, ) -> Result<DataTable, ArrowError>

Build a DataTable with an associated type name.

pub fn finish_with_schema_id( self, schema_id: u32, ) -> Result<DataTable, ArrowError>

Build a DataTable with schema ID for typed tables.