Struct SqlInfoDataBuilder

pub struct SqlInfoDataBuilder {
    infos: BTreeMap<u32, SqlInfoValue>,
}

Helper to create CommandGetSqlInfo responses.

CommandGetSqlInfo are metadata requests used by a Flight SQL server to communicate supported capabilities to Flight SQL clients.

Servers constuct - usually static - SqlInfoData via the SqlInfoDataBuilder, and build responses using CommandGetSqlInfo::into_builder

Fields

infos: BTreeMap<u32, SqlInfoValue>

Use BTreeMap to ensure the values are sorted by value as to make output consistent

Use u32 to support “custom” sql info values that are not part of the SqlInfo enum

Implementations

impl SqlInfoDataBuilder

pub fn new() -> Self

Create a new SQL info builder

pub fn append(&mut self, name: impl SqlInfoName, value: impl Into<SqlInfoValue>)

register the specific sql metadata item

pub fn build(self) -> Result<SqlInfoData>

Encode the contents of this list according to the FlightSQL spec

pub fn schema() -> &'static Schema

Return the [Schema] for a GetSchema RPC call with crate::sql::CommandGetSqlInfo

Trait Implementations

impl Clone for SqlInfoDataBuilder

fn clone(&self) -> SqlInfoDataBuilder

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SqlInfoDataBuilder

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SqlInfoDataBuilder

fn default() -> SqlInfoDataBuilder

Returns the “default value” for a type.

impl PartialEq for SqlInfoDataBuilder

fn eq(&self, other: &SqlInfoDataBuilder) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for SqlInfoDataBuilder