Module frame_support::storage::migration

Some utilities for helping access storage with arbitrary key types.

Structs

StorageIterator

Utility to iterate through raw items in storage.

StorageKeyIterator

Utility to iterate through raw items in storage.

Functions

clear_storage_prefix

Attempt to remove all values under a storage prefix by the module, the map’s item name and the key hash.

get_storage_value

Get a particular value in storage by the module, the map’s item name and the key hash.

have_storage_value

Get a particular value in storage by the module, the map’s item name and the key hash.

move_pallet

Move all storages from a pallet prefix to another pallet prefix.

move_prefix

Move all (key, value) after some prefix to the another prefix

move_storage_from_pallet

Move a storage from a pallet prefix to another pallet prefix.

put_storage_value

Put a particular value into storage by the module, the map’s item name and the key hash.

remove_storage_prefixDeprecated

Remove all items under a storage prefix by the module, the map’s item name and the key hash.

storage_iter

Construct iterator to iterate over map items in module for the map called item.

storage_iter_with_suffix

Construct iterator to iterate over map items in module for the map called item.

storage_key_iter

Construct iterator to iterate over map items in module for the map called item.

storage_key_iter_with_suffix

Construct iterator to iterate over map items in module for the map called item.

take_storage_item

Take a particular item in storage by the module, the map’s item name and the key hash.

take_storage_value

Take a particular value in storage by the module, the map’s item name and the key hash.