Method append_value

datafusion/physical-expr-common/src/binary_view_map.rs:430–454

Append a value to our buffers and return the view pointing to it

(&mut self, value: &[u8])

    /// Append a value to our buffers and return the view pointing to it
    fn append_value(&mut self, value: &[u8]) -> u128 {
        let len = value.len();
        let view = if len <= 12 {
            make_view(value, 0, 0)
        } else {
            // Ensure buffer is big enough
            if self.in_progress.len() + len > BYTE_VIEW_MAX_BLOCK_SIZE {
                let flushed = std::mem::replace(
                    &mut self.in_progress,
                    Vec::with_capacity(BYTE_VIEW_MAX_BLOCK_SIZE),
                );
                self.completed.push(Buffer::from_vec(flushed));
            }

            let buffer_index = self.completed.len() as u32;
            let offset = self.in_progress.len() as u32;
            self.in_progress.extend_from_slice(value);

            make_view(value, buffer_index, offset)
        };

        self.views.push(view);
        self.nulls.append_non_null();
        view
    }

    /// Total number of entries (including null, if present)
    pub fn len(&self) -> usize {