Struct arrow_flight::sql::ActionCreatePreparedStatementResult

pub struct ActionCreatePreparedStatementResult {
    pub prepared_statement_handle: Bytes,
    pub dataset_schema: Bytes,
    pub parameter_schema: Bytes,
}

Wrap the result of a “CreatePreparedStatement” or “CreatePreparedSubstraitPlan” action.

The resultant PreparedStatement can be closed either:

• Manually, through the “ClosePreparedStatement” action;
• Automatically, by a server timeout.

The result should be wrapped in a google.protobuf.Any message.

Fields

prepared_statement_handle: Bytes

Opaque handle for the prepared statement on the server.

dataset_schema: Bytes

If a result set generating query was provided, dataset_schema contains the schema of the dataset as described in Schema.fbs::Schema, it is serialized as an IPC message.

parameter_schema: Bytes

If the query provided contained parameters, parameter_schema contains the schema of the expected parameters as described in Schema.fbs::Schema, it is serialized as an IPC message.

Trait Implementations

impl Clone for ActionCreatePreparedStatementResult

fn clone(&self) -> ActionCreatePreparedStatementResult

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ActionCreatePreparedStatementResult

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

Formats the value using the given formatter.

impl Default for ActionCreatePreparedStatementResult

fn default() -> Self

Returns the “default value” for a type.

impl Message for ActionCreatePreparedStatementResult

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode<B>(&self, buf: &mut B) -> Result<(), EncodeError>where B: BufMut, Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8, Global>where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited<B>(&self, buf: &mut B) -> Result<(), EncodeError>where B: BufMut, Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8, Global>where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode<B>(buf: B) -> Result<Self, DecodeError>where B: Buf, Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited<B>(buf: B) -> Result<Self, DecodeError>where B: Buf, Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge<B>(&mut self, buf: B) -> Result<(), DecodeError>where B: Buf, Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited<B>(&mut self, buf: B) -> Result<(), DecodeError>where B: Buf, Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq<ActionCreatePreparedStatementResult> for ActionCreatePreparedStatementResult

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl ProstMessageExt for ActionCreatePreparedStatementResult

fn type_url() -> &'static str

type_url for this Message

fn as_any(&self) -> Any

Convert this Message to Any

impl StructuralPartialEq for ActionCreatePreparedStatementResult