iphone - Coredata Remove and Read Relationship -


is possible remove , read relationship?

i cannot post code here since huge project complex process.

let's have tablea <-->> tableb tableb gets updated (i.e., tableb objects deleted , new obejcts (re)added). check if objects tablea had relationship tableb, have in array server object id. read data in tableb , readd relationship. relationship gets faulted , cannot accessed. after add or remove object save it. doing wrong?

i feel misunderstanding intentions here give try , modify needed. first, entities should start capital letter, using tablea , tableb entities. tablea , tableb terrible names coredata entities. atrociously generic , if ever decide use them outside of tables confuse code. since "huge project complex process."

this in essence believe seeking:

// defined elsewhere nsmanagedobjectcontext *managedobjectcontext;  // saving the object want connect later tablea *relationshiptoa = self.alltablebs.tablearelationship;  // remove tableb objects coredata doing // ... // // //  // insert new tableb objects setting tablearelationship relationshiptoa // ... // //  // single example tableb *bobject = [nsentitydescription insertnewobjectforentityforname:@"tableb" inmanagedobjectcontext:managedobjectcontext]; bobject.tablearelationship = relationshiptoa;  // save context

then when attempt access objects relationship tablea valid , vice versa.


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