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Annotation of Examples/DatabaseKit/AssociationOracle/QualifiedAssociation.m, revision 1.1

1.1     ! root        1: /* QualifiedAssociation.m:
        !             2:  * You may freely copy, distribute, and reuse the code in this example.
        !             3:  * NeXT disclaims any warranty of any kind, expressed or  implied, as to its
        !             4:  * fitness for any particular use.
        !             5:  *
        !             6:  * Written by Mai Nguyen, NeXT Developer Support
        !             7:  *
        !             8:  */
        !             9: 
        !            10: #import "QualifiedAssociation.h"
        !            11: 
        !            12: @implementation QualifiedAssociation
        !            13: 
        !            14: /*  initialization method.
        !            15:  */
        !            16: 
        !            17: - (QualifiedAssociation *)initAndReplaceAssociationTo:(DBFetchGroup *)detailFG
        !            18: {
        !            19:        DBModule *                              dbModule;
        !            20:        DBAssociation *                 dbAssociation;
        !            21:        DBExpression *                  dbExpression;
        !            22:        DBFetchGroup *                  masterFetchGroup;
        !            23:                
        !            24:        /* Get a hold of the association from master fetchgroup to detail
        !            25:         * fetchgroup
        !            26:         */
        !            27:        dbModule = [detailFG module];
        !            28:        dbAssociation = [dbModule associationForObject:detailFG];
        !            29:        dbExpression = [dbAssociation expression];
        !            30:        masterFetchGroup = [dbAssociation fetchGroup];
        !            31:                /* Remove the association from the master fetchgroup
        !            32:                 */
        !            33:        [masterFetchGroup removeAssociation:dbAssociation];
        !            34:        [self initFetchGroup:masterFetchGroup
        !            35:                expression: dbExpression
        !            36:                destination: detailFG ];
        !            37:                        
        !            38:        [masterFetchGroup addAssociation:self];
        !            39:        
        !            40:                /* Free old association */
        !            41:        [dbAssociation free];
        !            42:        return self;
        !            43: }
        !            44: 
        !            45: - setValue:value
        !            46: {
        !            47:        [[self destination] fetchContentsOf:value usingQualifier:dbQualifier];
        !            48:        return self;
        !            49: }
        !            50: 
        !            51: - setQualifier: qualifier
        !            52: {
        !            53:        dbQualifier = (DBQualifier *)qualifier;
        !            54:        return self;
        !            55: }
        !            56: 
        !            57: - qualifier
        !            58: {
        !            59:        return dbQualifier;
        !            60: }
        !            61: 
        !            62: 
        !            63: @end

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