pub struct CommandPreparedStatementQuery {
pub prepared_statement_handle: Bytes,
}
Expand description
Represents an instance of executing a prepared statement. Used in the command member of FlightDescriptor for the following RPC calls:
-
GetSchema: return the Arrow schema of the query. Fields on this schema may contain the following metadata:
- ARROW:FLIGHT:SQL:CATALOG_NAME - Table’s catalog name
- ARROW:FLIGHT:SQL:DB_SCHEMA_NAME - Database schema name
- ARROW:FLIGHT:SQL:TABLE_NAME - Table name
- ARROW:FLIGHT:SQL:TYPE_NAME - The data source-specific name for the data type of the column.
- ARROW:FLIGHT:SQL:PRECISION - Column precision/size
- ARROW:FLIGHT:SQL:SCALE - Column scale/decimal digits if applicable
- ARROW:FLIGHT:SQL:IS_AUTO_INCREMENT - “1” indicates if the column is auto incremented, “0” otherwise.
- ARROW:FLIGHT:SQL:IS_CASE_SENSITIVE - “1” indicates if the column is case-sensitive, “0” otherwise.
- ARROW:FLIGHT:SQL:IS_READ_ONLY - “1” indicates if the column is read only, “0” otherwise.
- ARROW:FLIGHT:SQL:IS_SEARCHABLE - “1” indicates if the column is searchable via WHERE clause, “0” otherwise.
If the schema is retrieved after parameter values have been bound with DoPut, then the server should account for the parameters when determining the schema.
-
DoPut: bind parameter values. All of the bound parameter sets will be executed as a single atomic execution.
-
GetFlightInfo: execute the prepared statement instance.
Fields§
§prepared_statement_handle: Bytes
Opaque handle for the prepared statement on the server.
Trait Implementations§
Source§impl Clone for CommandPreparedStatementQuery
impl Clone for CommandPreparedStatementQuery
Source§fn clone(&self) -> CommandPreparedStatementQuery
fn clone(&self) -> CommandPreparedStatementQuery
Returns a copy of the value. Read more
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moreSource§impl Message for CommandPreparedStatementQuery
impl Message for CommandPreparedStatementQuery
Source§fn encoded_len(&self) -> usize
fn encoded_len(&self) -> usize
Returns the encoded length of the message without a length delimiter.
Source§fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>where
Self: Sized,
fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>where
Self: Sized,
Encodes the message to a buffer. Read more
Source§fn encode_to_vec(&self) -> Vec<u8>where
Self: Sized,
fn encode_to_vec(&self) -> Vec<u8>where
Self: Sized,
Encodes the message to a newly allocated buffer.
Source§fn encode_length_delimited(
&self,
buf: &mut impl BufMut,
) -> Result<(), EncodeError>where
Self: Sized,
fn encode_length_delimited(
&self,
buf: &mut impl BufMut,
) -> Result<(), EncodeError>where
Self: Sized,
Encodes the message with a length-delimiter to a buffer. Read more
Source§fn encode_length_delimited_to_vec(&self) -> Vec<u8>where
Self: Sized,
fn encode_length_delimited_to_vec(&self) -> Vec<u8>where
Self: Sized,
Encodes the message with a length-delimiter to a newly allocated buffer.
Source§fn decode(buf: impl Buf) -> Result<Self, DecodeError>where
Self: Default,
fn decode(buf: impl Buf) -> Result<Self, DecodeError>where
Self: Default,
Decodes an instance of the message from a buffer. Read more
Source§fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>where
Self: Default,
fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>where
Self: Default,
Decodes a length-delimited instance of the message from the buffer.
Source§fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>where
Self: Sized,
fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>where
Self: Sized,
Decodes an instance of the message from a buffer, and merges it into
self
. Read moreSource§fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>where
Self: Sized,
fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>where
Self: Sized,
Decodes a length-delimited instance of the message from buffer, and
merges it into
self
.Source§impl PartialEq for CommandPreparedStatementQuery
impl PartialEq for CommandPreparedStatementQuery
Source§fn eq(&self, other: &CommandPreparedStatementQuery) -> bool
fn eq(&self, other: &CommandPreparedStatementQuery) -> bool
Tests for
self
and other
values to be equal, and is used by ==
.impl StructuralPartialEq for CommandPreparedStatementQuery
Auto Trait Implementations§
impl !Freeze for CommandPreparedStatementQuery
impl RefUnwindSafe for CommandPreparedStatementQuery
impl Send for CommandPreparedStatementQuery
impl Sync for CommandPreparedStatementQuery
impl Unpin for CommandPreparedStatementQuery
impl UnwindSafe for CommandPreparedStatementQuery
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)§impl<T> Instrument for T
impl<T> Instrument for T
§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
Source§impl<T> IntoRequest<T> for T
impl<T> IntoRequest<T> for T
Source§fn into_request(self) -> Request<T>
fn into_request(self) -> Request<T>
Wrap the input message
T
in a tonic::Request