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b5312c3b6f
* WIP rt refactors * refactor: break drivers out into separate crates also cleans up significant technical debt
66 lines
2.1 KiB
Rust
66 lines
2.1 KiB
Rust
use crate::io::Encode;
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use crate::io::PgBufMutExt;
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use crate::types::Oid;
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use crate::PgValueFormat;
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#[derive(Debug)]
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pub struct Bind<'a> {
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/// The ID of the destination portal (`None` selects the unnamed portal).
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pub portal: Option<Oid>,
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/// The id of the source prepared statement.
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pub statement: Oid,
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/// The parameter format codes. Each must presently be zero (text) or one (binary).
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///
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/// There can be zero to indicate that there are no parameters or that the parameters all use the
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/// default format (text); or one, in which case the specified format code is applied to all
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/// parameters; or it can equal the actual number of parameters.
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pub formats: &'a [PgValueFormat],
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/// The number of parameters.
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pub num_params: i16,
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/// The value of each parameter, in the indicated format.
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pub params: &'a [u8],
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/// The result-column format codes. Each must presently be zero (text) or one (binary).
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///
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/// There can be zero to indicate that there are no result columns or that the
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/// result columns should all use the default format (text); or one, in which
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/// case the specified format code is applied to all result columns (if any);
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/// or it can equal the actual number of result columns of the query.
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pub result_formats: &'a [PgValueFormat],
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}
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impl Encode<'_> for Bind<'_> {
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fn encode_with(&self, buf: &mut Vec<u8>, _: ()) {
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buf.push(b'B');
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buf.put_length_prefixed(|buf| {
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buf.put_portal_name(self.portal);
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buf.put_statement_name(self.statement);
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buf.extend(&(self.formats.len() as i16).to_be_bytes());
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for &format in self.formats {
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buf.extend(&(format as i16).to_be_bytes());
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}
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buf.extend(&self.num_params.to_be_bytes());
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buf.extend(self.params);
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buf.extend(&(self.result_formats.len() as i16).to_be_bytes());
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for &format in self.result_formats {
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buf.extend(&(format as i16).to_be_bytes());
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}
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});
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}
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}
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// TODO: Unit Test Bind
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// TODO: Benchmark Bind
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