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Annotation of Examples/DatabaseKit/AssociationOracle/QualifiedAssociation.h, revision 1.1.1.1

1.1       root        1: /* QualifiedAssociation.h:
                      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:  * QualifiedAssociation is a subclass of DBAssociation which is designed to
                     10:  * replace the association created by the DBKit palette between a fetch  
                     11:  * group from a master table and the fetch group from a detail table.  Pass 
                     12:  * the detail fetch group into the init method for this object which will find  
                     13:  * the current association for that fetch group and replace that association 
                     14:  * with this new one.  After the initialization, the new association is owned
                     15:  * by the DBModule, and the old association has been freed.
                     16:  *
                     17:  * The added value of this association is to place an additional qualifier
                     18:  * on the fetch of the detail records.  This qualifier can be set and accessed
                     19:  * via the setQualifier: and qualifier methods.
                     20:  */
                     21: 
                     22: #import <appkit/appkit.h>
                     23: #import <dbkit/dbkit.h>
                     24: 
                     25: #import <dbkit/DBAssociation.h>
                     26: 
                     27: @interface QualifiedAssociation:DBAssociation
                     28: {
                     29:        DBQualifier *dbQualifier;
                     30: }
                     31: 
                     32: /* init method for the new subclass (designated initializer) */
                     33: - (QualifiedAssociation *)initAndReplaceAssociationTo:(DBFetchGroup *)detailFG;
                     34:                                                                                                
                     35: /* Override the setValue methods */
                     36: - setValue:value;
                     37: 
                     38: /* new methods */
                     39: - setQualifier:(DBQualifier *)qualifier;
                     40: - (DBQualifier *)qualifier;
                     41: 
                     42: @end

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