Struct transact::database::btree::BTreeReader

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pub struct BTreeReader<'a> { /* private fields */ }

Trait Implementations§

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impl<'a> DatabaseReader for BTreeReader<'a>

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fn cursor(&self) -> Result<DatabaseCursor<'_>, DatabaseError>

Returns a cursor against the main database. The cursor iterates over the entries in the natural key order.

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fn index_cursor(&self, index: &str) -> Result<DatabaseCursor<'_>, DatabaseError>

Returns a cursor against the given index. The cursor iterates over the entries in the index’s natural key order.

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fn count(&self) -> Result<usize, DatabaseError>

Returns the number of entries in the main database.

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fn index_count(&self, index: &str) -> Result<usize, DatabaseError>

Returns the number of entries in the given index.

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fn get(&self, key: &[u8]) -> Result<Option<Vec<u8>>, DatabaseError>

Returns the bytes stored at the given key, if found.
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fn index_get( &self, index: &str, key: &[u8] ) -> Result<Option<Vec<u8>>, DatabaseError>

Returns the bytes stored at the given key on a specified index, if found.

Auto Trait Implementations§

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impl<'a> RefUnwindSafe for BTreeReader<'a>

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impl<'a> !Send for BTreeReader<'a>

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impl<'a> Sync for BTreeReader<'a>

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impl<'a> Unpin for BTreeReader<'a>

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impl<'a> UnwindSafe for BTreeReader<'a>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn into(self) -> U

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impl<T> IntoSql for T

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fn into_sql<T>(self) -> Self::Expression
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Convert self to an expression for Diesel’s query builder. Read more
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type Output = T

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type Error = <U as TryFrom<T>>::Error

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