Method decoder

src/storage-types/src/sources.rs:1699–1701

(&self, col: Self::ArrowColumn)

    type Encoder = SourceDataColumnarEncoder;

    fn decoder(&self, col: Self::ArrowColumn) -> Result<Self::Decoder, anyhow::Error> {
        SourceDataColumnarDecoder::new(col, self)
    }

    fn encoder(&self) -> Result<Self::Encoder, anyhow::Error> {
        Ok(SourceDataColumnarEncoder::new(self))