60 lines
1.3 KiB
Rust
60 lines
1.3 KiB
Rust
//! Prepared statements.
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use std::mem;
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use std::sync::Arc;
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use std::sync::mpsc::Sender;
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#[doc(inline)]
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pub use postgres_shared::stmt::Column;
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use types::Type;
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/// A prepared statement.
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pub struct Statement {
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close_sender: Sender<(u8, String)>,
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name: String,
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params: Vec<Type>,
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columns: Arc<Vec<Column>>,
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}
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impl Drop for Statement {
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fn drop(&mut self) {
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let name = mem::replace(&mut self.name, String::new());
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let _ = self.close_sender.send((b'S', name));
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}
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}
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impl Statement {
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pub(crate) fn new(
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close_sender: Sender<(u8, String)>,
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name: String,
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params: Vec<Type>,
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columns: Arc<Vec<Column>>,
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) -> Statement {
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Statement {
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close_sender: close_sender,
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name: name,
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params: params,
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columns: columns,
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}
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}
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pub(crate) fn columns_arc(&self) -> &Arc<Vec<Column>> {
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&self.columns
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}
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pub(crate) fn name(&self) -> &str {
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&self.name
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}
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/// Returns the types of query parameters for this statement.
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pub fn parameters(&self) -> &[Type] {
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&self.params
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}
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/// Returns information about the resulting columns for this statement.
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pub fn columns(&self) -> &[Column] {
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&self.columns
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}
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}
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