Introduction
Provides the possibility to chain synchronous join() calls after either a
query() or join() synchronous call.
Member Functions
- getQueryResult
- join(Container, std :: string, std :: string)
- join(Container, std :: string, std :: string, Container)
- join(Container, std :: string, std :: string, Filter)
- join(Container, std :: string, std :: string, Filter, Container)
Discussion
Returns the QueryResult provided to the delegate after the the last query()
or join() call.
public
QueryChainSync join(
Container containerToQuery,
std::string key1,
std::string key2);
Parameters
-
containerToQuery
The container the join shall be done with. -
key1
The key from the previous query on which to perform the join. -
key2
The key on objects in \p containerToQuery on which to perform the
join
Discussion
Synchronous version of
QueryChain::join(Container,std::string,std::string,delegate::JoinDelegatePtr)
"QueryChain::query()", and throws
an exception, #JoinException, in case of a failed join.
\see QueryChain::join(Container,std::string,std::string,delegate::JoinDelegatePtr)
- Throws
-
#JoinException Possible only if current instance of QueryChainSync has been retrieved by a call to any of the following methods:
- CloudBackend::query(ContainerId)
- CloudBackend::query(ContainerId,Filter)
- Container::query()
- Container::query(Filter)
public
QueryChainSync join(
Container containerToQuery,
std::string key1,
std::string key2,
Container containerForResults);
Parameters
-
containerForResults
The Container from the previous query, if
desired cbe::Item "items" originate from
that container.
Discussion
Same as join(Container,std::string,std::string),
but with an additional Container parameter \p containerForResults.
\see join(Container,std::string,std::string)
public
QueryChainSync join(
Container containerToQuery,
std::string key1,
std::string key2,
Filter constraints);
Parameters
-
constraints
A Filter that provides any constraints for the query.
Discussion
Same as join(Container,std::string,std::string),
but with an additional Filter parameter \p constraints.
\see join(Container,std::string,std::string)
public
QueryChainSync join(
Container containerToQuery,
std::string key1,
std::string key2,
Filter constraints,
Container containerForResults);
Parameters
-
constraints
A Filter that provides any constraints for the query.
Discussion
Same as join(Container,std::string,std::string,Container),
but with an additional Filter parameter \p constraints.
\see join(Container,std::string,std::string,Container)
Member Data
- JoinException
- QueryJoinError
Discussion
\see delegate::JoinDelegate::Exception
Discussion
\see delegate::JoinDelegate::ErrorInfo
Last Updated: Wednesday, May 03, 2023
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