Trait AvroFormat 

pub trait AvroFormat: Debug + Default {
    const NEEDS_PREFIX: bool;

    // Required methods
    fn start_stream<W: Write>(
        &mut self,
        writer: &mut W,
        schema: &Schema,
        compression: Option<CompressionCodec>,
    ) -> Result<(), ArrowError>;
    fn sync_marker(&self) -> Option<&[u8; 16]>;
}

Format abstraction implemented by each container‐level writer.

Required Associated Constants

const NEEDS_PREFIX: bool

If true, the writer for this format will query single_object_prefix() and write the prefix before each record. If false, the writer can skip this step. This is a performance hint for the writer.

Required Methods

fn start_stream<W: Write>( &mut self, writer: &mut W, schema: &Schema, compression: Option<CompressionCodec>, ) -> Result<(), ArrowError>

Write any bytes required at the very beginning of the output stream (file header, etc.). Implementations must not write any record data.

fn sync_marker(&self) -> Option<&[u8; 16]>

Return the 16‑byte sync marker (OCF) or None (binary stream).

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl AvroFormat for AvroBinaryFormat

const NEEDS_PREFIX: bool = true

impl AvroFormat for AvroOcfFormat

const NEEDS_PREFIX: bool = false