fuel_core_storage::tables

Struct ContractsState

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pub struct ContractsState;
Expand description

The storage table for contract’s hashed key-value state.

Lifetime is for optimization to avoid clone.

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impl Mappable for ContractsState

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type OwnedKey = ContractsStateKey

The table key is combination of the ContractId and Bytes32 hash of the value’s key.

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type Key = <ContractsState as Mappable>::OwnedKey

The key type is used during interaction with the storage. In most cases, it is the same as Self::OwnedKey.
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type OwnedValue = ContractsStateData

The owned type of the Value retrieving from the storage.
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type Value = [u8]

The value type is used while setting the value to the storage. In most cases, it is the same as Self::OwnedValue, but it is without restriction and can be used for performance optimizations.
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impl<D> StorageRead<ContractsState> for PredicateStorage<D>

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fn read( &self, _key: &<ContractsState as Mappable>::Key, _buf: &mut [u8], ) -> Result<Option<usize>, <PredicateStorage<D> as StorageInspect<ContractsState>>::Error>

Read the value stored at the given key into the provided buffer if the value exists. Read more
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fn read_alloc( &self, _key: &<ContractsState as Mappable>::Key, ) -> Result<Option<Vec<u8>>, <PredicateStorage<D> as StorageInspect<ContractsState>>::Error>

Same as read but allocates a new buffer and returns it. Read more
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impl<D> StorageSize<ContractsState> for PredicateStorage<D>

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fn size_of_value( &self, _key: &<ContractsState as Mappable>::Key, ) -> Result<Option<usize>, <PredicateStorage<D> as StorageInspect<ContractsState>>::Error>

Return the number of bytes stored at this key.
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impl<D> StorageWrite<ContractsState> for PredicateStorage<D>

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fn write_bytes( &mut self, _key: &<ContractsState as Mappable>::Key, _buf: &[u8], ) -> Result<usize, <PredicateStorage<D> as StorageInspect<ContractsState>>::Error>

Write the bytes to the given key from the provided buffer. Read more
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fn replace_bytes( &mut self, _key: &<ContractsState as Mappable>::Key, _buf: &[u8], ) -> Result<(usize, Option<Vec<u8>>), <PredicateStorage<D> as StorageInspect<ContractsState>>::Error>

Write the bytes to the given key from the provided buffer and return the previous bytes if it existed. Read more
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fn take_bytes( &mut self, _key: &<ContractsState as Mappable>::Key, ) -> Result<Option<Vec<u8>>, <PredicateStorage<D> as StorageInspect<ContractsState>>::Error>

Removes a bytes from the storage and returning it without deserializing it.
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impl TableWithBlueprint for ContractsState

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type Blueprint = Plain<Raw, Raw>

The type of the blueprint used by the table.
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type Column = Column

The column type used by the table.
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fn column() -> Column

The column occupied by the table.

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> 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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fn conv<T>(self) -> T
where Self: Into<T>,

Converts self into T using Into<T>. Read more
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fn fmt_binary(self) -> FmtBinary<Self>
where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.
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fn fmt_display(self) -> FmtDisplay<Self>
where Self: Display,

Causes self to use its Display implementation when Debug-formatted.
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fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
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where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.
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where Self: Pointer,

Causes self to use its Pointer implementation when Debug-formatted.
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where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.
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where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.
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where &'a Self: for<'a> IntoIterator,

Formats each item in a sequence. Read more
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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<S> IteratorOverTable for S

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fn iter_all_keys<M>( &self, direction: Option<IterDirection>, ) -> BoxedIter<'_, Result<M::OwnedKey>> ⓘ
where M: Mappable, Self: IterableTable<M>,

Returns an iterator over the all keys in the table.
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fn iter_all_by_prefix_keys<M, P>( &self, prefix: Option<P>, ) -> BoxedIter<'_, Result<M::OwnedKey>> ⓘ
where M: Mappable, P: AsRef<[u8]>, Self: IterableTable<M>,

Returns an iterator over the all keys in the table with the specified prefix.
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fn iter_all_by_start_keys<M>( &self, start: Option<&M::Key>, direction: Option<IterDirection>, ) -> BoxedIter<'_, Result<M::OwnedKey>> ⓘ
where M: Mappable, Self: IterableTable<M>,

Returns an iterator over the all keys in the table after a specific start key.
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fn iter_all_filtered_keys<M, P>( &self, prefix: Option<P>, start: Option<&M::Key>, direction: Option<IterDirection>, ) -> BoxedIter<'_, Result<M::OwnedKey>> ⓘ
where M: Mappable, P: AsRef<[u8]>, Self: IterableTable<M>,

Returns an iterator over the all keys in the table with a prefix after a specific start key.
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fn iter_all<M>( &self, direction: Option<IterDirection>, ) -> BoxedIter<'_, Result<(M::OwnedKey, M::OwnedValue)>> ⓘ
where M: Mappable, Self: IterableTable<M>,

Returns an iterator over the all entries in the table.
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fn iter_all_by_prefix<M, P>( &self, prefix: Option<P>, ) -> BoxedIter<'_, Result<(M::OwnedKey, M::OwnedValue)>> ⓘ
where M: Mappable, P: AsRef<[u8]>, Self: IterableTable<M>,

Returns an iterator over the all entries in the table with the specified prefix.
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fn iter_all_by_start<M>( &self, start: Option<&M::Key>, direction: Option<IterDirection>, ) -> BoxedIter<'_, Result<(M::OwnedKey, M::OwnedValue)>> ⓘ
where M: Mappable, Self: IterableTable<M>,

Returns an iterator over the all entries in the table after a specific start key.
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fn iter_all_filtered<M, P>( &self, prefix: Option<P>, start: Option<&M::Key>, direction: Option<IterDirection>, ) -> BoxedIter<'_, Result<(M::OwnedKey, M::OwnedValue)>> ⓘ
where M: Mappable, P: AsRef<[u8]>, Self: IterableTable<M>,

Returns an iterator over the all entries in the table with a prefix after a specific start key.
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Borrows self and passes that borrow into the pipe function. Read more
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where Self: DerefMut<Target = T> + Deref, T: 'a + ?Sized, R: 'a,

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where Type: Mappable,

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