29 lines
684 B
Rust
29 lines
684 B
Rust
extern crate rusqlite;
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use ouroboros::self_referencing;
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use rusqlite::{CachedStatement, Connection, Result, Rows};
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#[self_referencing]
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struct OwningRows<'conn> {
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stmt: CachedStatement<'conn>,
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#[borrows(mut stmt)]
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#[covariant]
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rows: Rows<'this>,
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}
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fn main() -> Result<()> {
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let conn = Connection::open_in_memory()?;
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let stmt = conn.prepare_cached("SELECT 1")?;
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let mut or = OwningRowsTryBuilder {
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stmt,
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rows_builder: |s| s.query([]),
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}
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.try_build()?;
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or.with_rows_mut(|rows| -> Result<()> {
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while let Some(row) = rows.next()? {
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assert_eq!(Ok(1), row.get(0));
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}
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Ok(())
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})?;
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Ok(())
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}
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