ckb_rocksdb

Struct ReadOnlyDB

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pub struct ReadOnlyDB { /* private fields */ }

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impl ReadOnlyDB

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pub fn path(&self) -> &Path

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impl Debug for ReadOnlyDB

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Drop for ReadOnlyDB

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl GetColumnFamilys for ReadOnlyDB

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fn get_cfs(&self) -> &BTreeMap<String, ColumnFamily>

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fn get_mut_cfs(&mut self) -> &mut BTreeMap<String, ColumnFamily>

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fn cf_handle(&self, name: &str) -> Option<&ColumnFamily>

Return the underlying column family handle.
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impl Handle<rocksdb_t> for ReadOnlyDB

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fn handle(&self) -> *mut rocksdb_t

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impl Iterate for ReadOnlyDB

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fn get_raw_iter<'a: 'b, 'b>( &'a self, readopts: &ReadOptions, ) -> DBRawIterator<'b>

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fn get_iter<'a: 'b, 'b>( &'a self, readopts: &ReadOptions, mode: IteratorMode<'_>, ) -> DBIterator<'b> ⓘ

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fn iterator_opt<'a: 'b, 'b>( &'a self, mode: IteratorMode<'_>, readopts: &ReadOptions, ) -> DBIterator<'b> ⓘ

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fn iterator<'a: 'b, 'b>(&'a self, mode: IteratorMode<'_>) -> DBIterator<'b> ⓘ

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fn full_iterator<'a: 'b, 'b>(&'a self, mode: IteratorMode<'_>) -> DBIterator<'b> ⓘ

Opens an interator with set_total_order_seek enabled. This must be used to iterate across prefixes when set_memtable_factory has been called with a Hash-based implementation.
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fn prefix_iterator<'a: 'b, 'b>(&'a self, prefix: &[u8]) -> DBIterator<'b> ⓘ

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fn raw_iterator<'a: 'b, 'b>(&'a self) -> DBRawIterator<'b>

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impl IterateCF for ReadOnlyDB

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fn get_raw_iter_cf<'a: 'b, 'b>( &'a self, cf_handle: &ColumnFamily, readopts: &ReadOptions, ) -> Result<DBRawIterator<'b>, Error>

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fn get_iter_cf<'a: 'b, 'b>( &'a self, cf_handle: &ColumnFamily, readopts: &ReadOptions, mode: IteratorMode<'_>, ) -> Result<DBIterator<'b>, Error>

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fn iterator_cf_opt<'a: 'b, 'b>( &'a self, cf_handle: &ColumnFamily, mode: IteratorMode<'_>, readopts: &ReadOptions, ) -> Result<DBIterator<'b>, Error>

Opens an interator using the provided ReadOptions. This is used when you want to iterate over a specific ColumnFamily with a modified ReadOptions
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fn iterator_cf<'a: 'b, 'b>( &'a self, cf_handle: &ColumnFamily, mode: IteratorMode<'_>, ) -> Result<DBIterator<'b>, Error>

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fn full_iterator_cf<'a: 'b, 'b>( &'a self, cf_handle: &ColumnFamily, mode: IteratorMode<'_>, ) -> Result<DBIterator<'b>, Error>

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fn prefix_iterator_cf<'a: 'b, 'b>( &'a self, cf_handle: &ColumnFamily, prefix: &[u8], ) -> Result<DBIterator<'b>, Error>

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fn raw_iterator_cf<'a: 'b, 'b>( &'a self, cf_handle: &ColumnFamily, ) -> Result<DBRawIterator<'b>, Error>

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impl Open for ReadOnlyDB

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fn open_default<P: AsRef<Path>>(path: P) -> Result<Self, Error>

Open a database with default options.
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fn open<P: AsRef<Path>>(opts: &Options, path: P) -> Result<Self, Error>

Open the database with the specified options.
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fn open_with_descriptor<P: AsRef<Path>>( opts: &Options, path: P, descriptor: Self::Descriptor, ) -> Result<Self, Error>

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impl OpenCF for ReadOnlyDB

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fn open_cf<P, I, N>(opts: &Options, path: P, cfs: I) -> Result<Self, Error>
where P: AsRef<Path>, I: IntoIterator<Item = N>, N: AsRef<str>,

Open a database with the given database options and column family names. Read more
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fn open_cf_descriptors<P, I>( opts: &Options, path: P, cfs: I, ) -> Result<Self, Error>
where P: AsRef<Path>, I: IntoIterator<Item = ColumnFamilyDescriptor>,

Open a database with the given database options and column family descriptors.
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fn open_cf_descriptors_with_descriptor<P, I>( opts: &Options, path: P, cfs: I, descriptor: Self::Descriptor, ) -> Result<Self, Error>
where P: AsRef<Path>, I: IntoIterator<Item = ColumnFamilyDescriptor>,

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impl Read for ReadOnlyDB

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impl Send for ReadOnlyDB

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impl Sync for ReadOnlyDB

Auto Trait Implementations§

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> BatchedMultiGetCF<ReadOptions> for T
where T: Handle<rocksdb_t> + Read,

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fn batched_multi_get_cf_full<'a, K, I>( &self, cf: &ColumnFamily, keys: I, sorted_input: bool, readopts: Option<&ReadOptions>, ) -> Vec<Result<Option<DBPinnableSlice<'_>>, Error>>
where K: AsRef<[u8]> + 'a + ?Sized, I: IntoIterator<Item = &'a K>,

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fn batched_multi_get_cf<'a, K, I>( &self, cf: &ColumnFamily, keys: I, sorted_input: bool, ) -> Vec<Result<Option<DBPinnableSlice<'_>>, Error>>
where K: AsRef<[u8]> + 'a + ?Sized, I: IntoIterator<Item = &'a K>,

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fn batched_multi_get_cf_opt<'a, K, I>( &self, cf: &ColumnFamily, keys: I, sorted_input: bool, readopts: &R, ) -> Vec<Result<Option<DBPinnableSlice<'_>>, Error>>
where K: AsRef<[u8]> + 'a + ?Sized, I: IntoIterator<Item = &'a K>,

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CreateCheckpointObject for T
where T: Handle<rocksdb_t>,

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unsafe fn create_checkpoint_object_raw( &self, ) -> Result<*mut rocksdb_checkpoint_t, Error>

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fn create_checkpoint_object(&self) -> Result<Checkpoint<'_>, Error>

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, R> Get<R> for T
where T: GetCF<R>,

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fn get_full<K>( &self, key: K, readopts: Option<&R>, ) -> Result<Option<DBVector>, Error>
where K: AsRef<[u8]>,

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fn get<K: AsRef<[u8]>>(&self, key: K) -> Result<Option<DBVector>, Error>

Return the bytes associated with a key value
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fn get_opt<K: AsRef<[u8]>>( &self, key: K, readopts: &R, ) -> Result<Option<DBVector>, Error>

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impl<T> GetCF<ReadOptions> for T
where T: Handle<rocksdb_t> + Read,

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fn get_cf_full<K>( &self, cf: Option<&ColumnFamily>, key: K, readopts: Option<&ReadOptions>, ) -> Result<Option<DBVector>, Error>
where K: AsRef<[u8]>,

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fn get_cf<K: AsRef<[u8]>>( &self, cf: &ColumnFamily, key: K, ) -> Result<Option<DBVector>, Error>

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fn get_cf_opt<K: AsRef<[u8]>>( &self, cf: &ColumnFamily, key: K, readopts: &R, ) -> Result<Option<DBVector>, Error>

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impl<'a, T, R> GetPinned<'a> for T
where T: GetPinnedCF<'a, ReadOptions = R>,

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type ReadOptions = R

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fn get_pinned_full<K>( &'a self, key: K, readopts: Option<<T as GetPinned<'a>>::ReadOptions>, ) -> Result<Option<DBPinnableSlice<'a>>, Error>
where K: AsRef<[u8]>,

Return the value associated with a key using RocksDB’s PinnableSlice so as to avoid unnecessary memory copy.
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fn get_pinned<K: AsRef<[u8]>>( &'a self, key: K, ) -> Result<Option<DBPinnableSlice<'a>>, Error>

Return the value associated with a key using RocksDB’s PinnableSlice so as to avoid unnecessary memory copy. Similar to get_pinned_opt but leverages default options.
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fn get_pinned_opt<K: AsRef<[u8]>>( &'a self, key: K, readopts: Self::ReadOptions, ) -> Result<Option<DBPinnableSlice<'a>>, Error>

Return the value associated with a key using RocksDB’s PinnableSlice so as to avoid unnecessary memory copy.
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impl<'a, T> GetPinnedCF<'a> for T
where T: Handle<rocksdb_t> + Read,

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type ColumnFamily = &'a ColumnFamily

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type ReadOptions = &'a ReadOptions

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fn get_pinned_cf_full<K>( &'a self, cf: Option<<T as GetPinnedCF<'a>>::ColumnFamily>, key: K, readopts: Option<<T as GetPinnedCF<'a>>::ReadOptions>, ) -> Result<Option<DBPinnableSlice<'a>>, Error>
where K: AsRef<[u8]>,

Return the value associated with a key using RocksDB’s PinnableSlice so as to avoid unnecessary memory copy.
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fn get_pinned_cf<K: AsRef<[u8]>>( &'a self, cf: Self::ColumnFamily, key: K, ) -> Result<Option<DBPinnableSlice<'a>>, Error>

Return the value associated with a key using RocksDB’s PinnableSlice so as to avoid unnecessary memory copy.
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fn get_pinned_cf_opt<K: AsRef<[u8]>>( &'a self, cf: Self::ColumnFamily, key: K, readopts: Self::ReadOptions, ) -> Result<Option<DBPinnableSlice<'a>>, Error>

Return the value associated with a key using RocksDB’s PinnableSlice so as to avoid unnecessary memory copy.
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impl<T> GetProperty for T
where T: Handle<rocksdb_t>,

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fn property_value(&self, name: &str) -> Result<Option<String>, Error>

Retrieves a RocksDB property by name. Read more
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fn property_int_value(&self, name: &str) -> Result<Option<u64>, Error>

Retrieves a RocksDB property and casts it to an integer. Read more
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impl<T> GetPropertyCF for T
where T: Handle<rocksdb_t>,

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fn property_value_cf( &self, cf: &ColumnFamily, name: &str, ) -> Result<Option<String>, Error>

Retrieves a RocksDB property by name, for a specific column family. Read more
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fn property_int_value_cf( &self, cf: &ColumnFamily, name: &str, ) -> Result<Option<u64>, Error>

Retrieves a RocksDB property for a specific column family and casts it to an integer. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> MultiGet<ReadOptions> for T
where T: Handle<rocksdb_t> + Read,

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fn multi_get_full<K, I>( &self, keys: I, readopts: Option<&ReadOptions>, ) -> Vec<Result<Option<DBVector>, Error>>
where K: AsRef<[u8]>, I: IntoIterator<Item = K>,

Return the values associated with the given keys using read options.

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fn multi_get<K, I>(&self, keys: I) -> Vec<Result<Option<DBVector>, Error>>
where K: AsRef<[u8]>, I: IntoIterator<Item = K>,

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fn multi_get_opt<K, I>( &self, keys: I, readopts: &R, ) -> Vec<Result<Option<DBVector>, Error>>
where K: AsRef<[u8]>, I: IntoIterator<Item = K>,

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impl<T> MultiGetCF<ReadOptions> for T
where T: Handle<rocksdb_t> + Read,

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fn multi_get_cf_full<'a, K, I>( &self, keys: I, readopts: Option<&ReadOptions>, ) -> Vec<Result<Option<DBVector>, Error>>
where K: AsRef<[u8]>, I: IntoIterator<Item = (&'a ColumnFamily, K)>,

Return the values associated with the given keys and column families using read options.

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fn multi_get_cf<'a, K, I>( &self, keys_cf: I, ) -> Vec<Result<Option<DBVector>, Error>>
where K: AsRef<[u8]>, I: IntoIterator<Item = (&'a ColumnFamily, K)>,

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fn multi_get_cf_opt<'a, K, I>( &self, keys_cf: I, readopts: &R, ) -> Vec<Result<Option<DBVector>, Error>>
where K: AsRef<[u8]>, I: IntoIterator<Item = (&'a ColumnFamily, K)>,

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impl<T> SetOptions for T
where T: Handle<rocksdb_t>,

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fn set_options(&self, opts: &[(&str, &str)]) -> Result<(), Error>

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fn set_options_cf( &self, cf: &ColumnFamily, opts: &[(&str, &str)], ) -> Result<(), Error>

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.