Return to SybaseDelegate.m CVS log

Up to [NeXTSTEP 3.3 examples] / Examples / EnterpriseObjects / SQLExecutor

Annotation of Examples/EnterpriseObjects/SQLExecutor/SybaseDelegate.m, revision 1.1.1.1

1.1       root        1: /* SybaseDelegate.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 Dan Willhite, EO Dev Team
                      7:  * Modified by Mai Nguyen
                      8:  *
                      9:  */
                     10: 
                     11: #import "SybaseDelegate.h"
                     12: #import "Evaluator.h"
                     13: 
                     14: /* A way to get a string out of an object */
                     15: 
                     16: @implementation SybaseDelegate
                     17: - (NSArray *)sybaseChannel:(SybaseChannel *)channel
                     18:     willFetchAttributes:(NSArray *)attributes
                     19:     forRowOfType:(SybaseRowType)rowType
                     20:     withComputeRowId:(int)computeRowId
                     21: {
                     22:        currentRowType = rowType;
                     23:        
                     24:     if (rowType == SybaseRegularRow)
                     25:        return attributes;
                     26:        
                     27:     attributes = [(EOAdaptorChannel *) channel describeResults];
                     28:     return attributes;
                     29: }
                     30: 
                     31: /* Return YES will return all row types: regular, compute, etc.
                     32:  * If one only wants specific rows to be returned, one can selectively
                     33:  * return YES on those row types and NO on all others.
                     34:  */
                     35: - (BOOL)sybaseChannel:(SybaseChannel *)channel
                     36:     willReturnRow:(NSDictionary *)row ofType:(SybaseRowType)rowType 
                     37:     withComputeRowId:(int)computeRowId
                     38: {
                     39:        currentRowType = rowType;
                     40:        
                     41:     switch (rowType) {
                     42:        case SybaseRegularRow:
                     43:            break;
                     44:        case SybaseComputeRow:
                     45:                [[[NXApp mainWindow] delegate] logString:@"Returning compute row\n"];
                     46:            break;
                     47:        case SybaseReturnParameterRow:
                     48:                [[[NXApp mainWindow] delegate] logString:
                     49:                                                        @"Returning return parameter row\n"];
                     50:            break;
                     51:        case SybaseReturnStatusRow:
                     52:                [[[NXApp mainWindow] delegate] logString:
                     53:                                                        @"Returning return status row\n"];
                     54:            break;
                     55:     }
                     56:     
                     57:     return YES;
                     58: }
                     59: 
                     60: - (SybaseRowType) currentRowType
                     61: {
                     62:        return currentRowType;
                     63: }
                     64: 
                     65: - (void)adaptorChannelDidChangeResultSet:channel
                     66: {
                     67:     // Invoked from -fetchAttributes:withZone: to tell the delegate that
                     68:     // fetching will start for the next result set, when a select operation
                     69:     // resulted in multiple result sets.  This method is invoked just after a
                     70:     // -fetchAttributes:withZone: returns nil when there are still result sets
                     71:     // left to fetch.
                     72: 
                     73:        [[[NXApp mainWindow] delegate] announce:channel selector:_cmd];
                     74: }
                     75: 
                     76: 
                     77: 
                     78: - (void)adaptorChannel:channel
                     79:     didEvaluateExpression:(NSString *)expression
                     80: {
                     81:     // Invoked from -evaluateExpression: to tell the delegate that a query
                     82:     // language expression has been evaluated by the database server. The
                     83:     // delegate may take whatever action it needs based on this information.
                     84: 
                     85:        [[[NXApp mainWindow] delegate] announce:channel 
                     86:                selector:_cmd 
                     87:                with:[NSArray arrayWithObject:expression]];
                     88: }
                     89: 
                     90: 
                     91: 
                     92: @end
                     93: 

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.