Skip to main content

JsonFormat

datafusion_python::datafusion_common::arrow::json::writer

Trait JsonFormat 

Source 
pub trait JsonFormat: Debug + Default {
    // Provided methods
    fn start_stream<W>(&self, _writer: &mut W) -> Result<(), ArrowError>
       where W: Write { ... }
    fn start_row<W>(
        &self,
        _writer: &mut W,
        _is_first_row: bool,
    ) -> Result<(), ArrowError>
       where W: Write { ... }
    fn end_row<W>(&self, _writer: &mut W) -> Result<(), ArrowError>
       where W: Write { ... }
    fn end_stream<W>(&self, _writer: &mut W) -> Result<(), ArrowError>
       where W: Write { ... }
}
Expand description

This trait defines how to format a sequence of JSON objects to a byte stream.

Provided Methods§

Source

fn start_stream<W>(&self, _writer: &mut W) -> Result<(), ArrowError>
where W: Write,

write any bytes needed at the start of the file to the writer

Source

fn start_row<W>( &self, _writer: &mut W, _is_first_row: bool, ) -> Result<(), ArrowError>
where W: Write,

write any bytes needed for the start of each row

Source

fn end_row<W>(&self, _writer: &mut W) -> Result<(), ArrowError>
where W: Write,

write any bytes needed for the end of each row

Source

fn end_stream<W>(&self, _writer: &mut W) -> Result<(), ArrowError>
where W: Write,

write any bytes needed for the start of each row

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§