cbe::QueryChainExt Class Reference

Extension of class QueryChain. More...

#include <QueryChain.h>

Inheritance diagram for cbe::QueryChainExt:

Collaboration diagram for cbe::QueryChainExt:

Public Member Functions
QueryChainExt	join (Container containerToQuery, std::string key1, std::string key2)
QueryChainExt	join (Container containerToQuery, std::string key1, std::string key2, Filter constraints)
QueryChainExt	join (Container containerToQuery, std::string key1, std::string key2, Container containerForResults)
QueryChainExt	join (Container containerToQuery, std::string key1, std::string key2, Filter constraints, Container containerForResults)
QueryChain	join (Container containerToQuery, std::string key1, std::string key2, JoinDelegatePtr joinDelegate)
QueryChain	join (Container containerToQuery, std::string key1, std::string key2, Filter constraints, JoinDelegatePtr joinDelegate)
QueryChain	join (Container containerToQuery, std::string key1, std::string key2, Container containerForResults, JoinDelegatePtr joinDelegate)
QueryChain	join (Container containerToQuery, std::string key1, std::string key2, Filter constraints, Container containerForResults, JoinDelegatePtr joinDelegate)
Public Member Functions inherited from cbe::QueryChain
QueryChain	join (Container containerToQuery, std::string key1, std::string key2, JoinDelegatePtr joinDelegate)
QueryChain	join (Container containerToQuery, std::string key1, std::string key2, Filter constraints, JoinDelegatePtr joinDelegate)
QueryChain	join (Container containerToQuery, std::string key1, std::string key2, Container containerForResults, JoinDelegatePtr joinDelegate)
QueryChain	join (Container containerToQuery, std::string key1, std::string key2, Filter constraints, Container containerForResults, JoinDelegatePtr joinDelegate)
QueryResult	getQueryResult () const
	QueryChain (cbe::DefaultCtor)
	operator bool () const

Friends
class	CloudBackend
class	Container

Additional Inherited Members
Public Types inherited from cbe::QueryChain
using	JoinDelegatePtr = delegate::JoinDelegatePtr

Detailed Description

Extension of class QueryChain.

[Async] QueryChainExt is used when the query is carried out with subsequent intended join in mind.
I.e., we have passed a QueryJoinDelegate to the previous call and that will then be reused in the trailing join()-call. It is an extension of class QueryChain offering join() methods that do not require a new delegate.
Instead, these will use the delegate passed as argument in the previous invocation in the call chain — i.e.:

• CloudBackend::query(ContainerId,delegate::QueryJoinDelegatePtr) and overloads.
• Container::query(delegate::QueryJoinDelegatePtr) and overloads.
• QueryChain::join(Container,std::string,std::string,JoinDelegatePtr) and overloads.

Member Function Documentation

join() [1/8]

QueryChainExt cbe::QueryChainExt::join	(	Container	containerToQuery,
		std::string	key1,
		std::string	key2
	)

Performs a join request in line with function join() in class QueryChain.
If a call to this join function is chained with a previous call to a query, only such a query functions accepting a QueryJoinDelegate can be used as:

• CloudBackend::query(ContainerId,delegate::QueryJoinDelegatePtr)
• CloudBackend::query(ContainerId,Filter,delegate::QueryJoinDelegatePtr)
• Container::query(delegate::QueryJoinDelegatePtr)
• Container::query(Filter,delegate::QueryJoinDelegatePtr)

Asynchronous version of this service function.

See also

QueryChain::join(Container,std::string,std::string,delegate::JoinDelegatePtr)

join() [2/8]

QueryChainExt cbe::QueryChainExt::join	(	Container	containerToQuery,
		std::string	key1,
		std::string	key2,
		Container	containerForResults
	)

See also

QueryChain::join(Container,std::string,std::string,Container,delegate::JoinDelegatePtr)

join() [3/8]

QueryChain cbe::QueryChain::join

Same as join(Container,std::string,std::string,delegate::JoinDelegatePtr), but with an additional Container parameter containerForResults .

Parameters

containerForResults

Can be the Container from the previous query if desired items should be from that container.

join() [4/8]

QueryChainExt cbe::QueryChainExt::join	(	Container	containerToQuery,
		std::string	key1,
		std::string	key2,
		Filter	constraints
	)

See also

QueryChain::join(Container,std::string,std::string,Filter,delegate::JoinDelegatePtr)

join() [5/8]

QueryChainExt cbe::QueryChainExt::join	(	Container	containerToQuery,
		std::string	key1,
		std::string	key2,
		Filter	constraints,
		Container	containerForResults
	)

See also

QueryChain::join(Container,std::string,std::string,Filter,Container,delegate::JoinDelegatePtr)

join() [6/8]

QueryChain cbe::QueryChain::join

Same as join(Container,std::string,std::string,Container,delegate::JoinDelegatePtr), but with an additional Filter parameter constraints .

Parameters

constraints

A filter that provides any constraints for the query.

join() [7/8]

QueryChain cbe::QueryChain::join

Same as join(Container,std::string,std::string,delegate::JoinDelegatePtr), but with an additional Filter parameter constraints .

Parameters

constraints

A filter that provides any constraints for the query.

join() [8/8]

QueryChain cbe::QueryChain::join

Performs a join request in conjunction with a query, or previous join, to get related items from another container.

Asynchronous version of this service function.

Parameters

containerToQuery	The container of which 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 containerToQuery on which to perform the join
joinDelegate	Pointer to a JoinDelegate instance, implemented by the user, that receives the response of this query request. I.e., either of the JoinDelegate callback functions onJoinSuccess() or onJoinError() will be called.

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The documentation for this class was generated from the following file:

• include/cbe/QueryChain.h