Struct polymesh_api::polymesh::api::system::SystemPagedQueryApi

pub struct SystemPagedQueryApi<'api> { /* private fields */ }

Implementations

impl<'api> SystemPagedQueryApi<'api>

pub fn account(&self) -> StoragePaged<AccountId, AccountInfo<u32, AccountData>>

The full account information for a particular account ID.

pub fn block_hash(&self) -> StoragePaged<u32, H256>

Map of block numbers to block hashes.

pub fn extrinsic_data(&self) -> StoragePaged<u32, Vec<u8>>

Extrinsics data for the current block (maps an extrinsic’s index to its data).

pub fn event_topics(&self) -> StoragePaged<H256, Vec<(u32, u32)>>

Mapping between a topic (represented by T::Hash) and a vector of indexes of events in the <Events<T>> list.

All topic vectors have deterministic storage locations depending on the topic. This allows light-clients to leverage the changes trie storage tracking mechanism and in case of changes fetch the list of events of interest.

The value has the type (T::BlockNumber, EventIndex) because if we used only just the EventIndex then in case if the topic has the same contents on the next block no notification will be triggered thus the event might be lost.

Trait Implementations

impl<'api> Clone for SystemPagedQueryApi<'api>

fn clone(&self) -> SystemPagedQueryApi<'api>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.