CBEQueryChain

Superclass:	NSObject
Declared In:	QueryChain.h

Introduction

to do a search for Object combining more than one (CBEContainer*)table.

Methods

-getQueryResult
-join:key1:key2:constraints:containerForResults:joinDelegate:
-join:key1:key2:constraints:joinDelegate:
-join:key1:key2:containerForResults:joinDelegate:
-join:key1:key2:joinDelegate:

getQueryResult

-(CBEQueryResult*) getQueryResult;

Discussion

Returns the QueryResult provided to the delegate after the the last query() or join:() call. If this method is called before the delegate call, an empty QueryResult is returned.

join:key1:key2:constraints:containerForResults:joinDelegate:

-(CBEQueryChain*) join:(CBEContainer*) containerToQuery key1:(NSString*) key1 
        key2:(NSString*) key2 constraints:(CBEFilter*) constraints 
        containerForResults:(CBEContainer*) containerForResults 
        joinDelegate:(id<JoinDelegatePtr>) joinDelegate;

Parameters

constraints: A filter that provides any constraints for the query.

Discussion

Same as join:(Container,(NSString*),(NSString*),Container,delegate::JoinDelegatePtr), but with an additional Filter parameter \p constraints .

join:key1:key2:constraints:joinDelegate:

-(CBEQueryChain*) join:(CBEContainer*) containerToQuery key1:(NSString*) key1 
        key2:(NSString*) key2 constraints:(CBEFilter*) constraints 
        joinDelegate:(id<JoinDelegatePtr>) joinDelegate;

Parameters

constraints: A filter that provides any constraints for the query.

Discussion

Same as join:(Container,(NSString*),(NSString*),delegate::JoinDelegatePtr), but with an additional Filter parameter \p constraints .

join:key1:key2:containerForResults:joinDelegate:

-(CBEQueryChain*) join:(CBEContainer*) containerToQuery key1:(NSString*) key1 
        key2:(NSString*) key2 containerForResults:(CBEContainer*) containerForResults 
        joinDelegate:(id<JoinDelegatePtr>) joinDelegate;

Parameters

containerForResults: Can be the (CBEContainer*)from the previous query if desired items should be from that container.

Discussion

Same as join:(Container,(NSString*),(NSString*),delegate::JoinDelegatePtr), but with an additional (CBEContainer*)parameter \p containerForResults .

join:key1:key2:joinDelegate:

-(CBEQueryChain*) join:(CBEContainer*) containerToQuery key1:(NSString*) key1 
        key2:(NSString*) key2 joinDelegate:(id<JoinDelegatePtr>) joinDelegate;

Parameters

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

Discussion

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.

Last Updated: Wednesday, May 03, 2023