Struct cosmwasm_std::QuerierWrapper

pub struct QuerierWrapper<'a>(_);

Implementations

impl<'a> QuerierWrapper<'a>

pub fn new(querier: &'a dyn Querier) -> Self

pub fn raw_query(&self, bin_request: &[u8]) -> QuerierResult

This allows us to pass through binary queries from one level to another without knowing the custom format, or we can decode it, with the knowledge of the allowed types. You probably want one of the simpler auto-generated helper methods

pub fn query<T: DeserializeOwned>(
    &self,
    request: &QueryRequest<Empty>
) -> StdResult<T>

query is a shorthand for custom_query when we are not using a custom type, this allows us to avoid specifying "Empty" in all the type definitions.

pub fn custom_query<C: CustomQuery, U: DeserializeOwned>(
    &self,
    request: &QueryRequest<C>
) -> StdResult<U>

Makes the query and parses the response. Also handles custom queries, so you need to specify the custom query type in the function parameters. If you are no using a custom query, just use query for easier interface.

Any error (System Error, Error or called contract, or Parse Error) are flattened into one level. Only use this if you don't need to check the SystemError eg. If you don't differentiate between contract missing and contract returned error

pub fn query_balance<U: Into<HumanAddr>>(
    &self,
    address: U,
    denom: &str
) -> StdResult<Coin>

pub fn query_all_balances<U: Into<HumanAddr>>(
    &self,
    address: U
) -> StdResult<Vec<Coin>>

pub fn query_wasm_smart<T: DeserializeOwned, U: Serialize, V: Into<HumanAddr>>(
    &self,
    contract: V,
    msg: &U
) -> StdResult<T>

pub fn query_wasm_raw<T: Into<HumanAddr>, U: Into<Binary>>(
    &self,
    contract: T,
    key: U
) -> StdResult<Option<Vec<u8>>>

Trait Implementations

impl<'a> Clone for QuerierWrapper<'a>

fn clone(&self) -> QuerierWrapper<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for QuerierWrapper<'a>