err.no Git - scalable-opengroupware.org/blob - Misc/dbd/DTable.m

   1 // $Id$
   2
   3 #include <NGObjWeb/SoComponent.h>
   4
   5 @class EOAdaptorChannel;
   6
   7 @interface DTable : SoComponent
   8 {
   9   EOAdaptorChannel *channel;
  10   NSArray *attributes;
  11   NSArray *columnNames;
  12   id item;
  13 }
  14
  15 @end
  16
  17 #include "DSoTable.h"
  18 #include "common.h"
  19
  20 @implementation DTable
  21
  22 - (void)dealloc {
  23   if ([self->channel isOpen])
  24     [self->channel closeChannel];
  25   [self->channel release];
  26
  27   [self->attributes  release];
  28   [self->columnNames release];
  29   [self->item        release];
  30   [super dealloc];
  31 }
  32
  33 /* notifications */
  34
  35 - (void)sleep {
  36   if ([self->channel isOpen])
  37     [self->channel closeChannel];
  38
  39   [super sleep];
  40 }
  41
  42 /* DB things */
  43
  44 - (EOAdaptor *)adaptor {
  45   return [(DSoTable *)[self clientObject] adaptorInContext:[self context]];
  46 }
  47
  48 - (EOAdaptorChannel *)channel {
  49   EOAdaptorContext *ctx;
  50
  51   if (self->channel)
  52     return self->channel;
  53
  54   ctx = [[self adaptor] createAdaptorContext];
  55   self->channel = [[ctx createAdaptorChannel] retain];
  56   if (![self->channel openChannel]) {
  57     [self->channel release];
  58     self->channel = nil;
  59   }
  60
  61   return self->channel;
  62 }
  63
  64 - (EOModel *)_describeModel {
  65   NSArray *tableNames;
  66
  67   tableNames = [NSArray arrayWithObject:[[self clientObject] tableName]];
  68   return [[self channel] describeModelWithTableNames:tableNames];
  69 }
  70
  71 /* accessors */
  72
  73 - (void)setItem:(id)_item {
  74   ASSIGN(self->item, _item);
  75 }
  76 - (id)item {
  77   return self->item;
  78 }
  79
  80 - (NSArray *)attributes {
  81   EOModel *model;
  82
  83   if (self->attributes)
  84     return self->attributes;
  85
  86   model            = [self _describeModel];
  87   self->attributes = [[[[model entities] lastObject] attributes] retain];
  88   return self->attributes;
  89 }
  90 - (NSArray *)columnNames {
  91   if (self->columnNames)
  92     return self->columnNames;
  93
  94   self->columnNames = [[[self attributes] valueForKey:@"columnName"] copy];
  95   return self->columnNames;
  96 }
  97
  98 - (NSString *)columnLink {
  99   return [[[self item] columnName] stringByAppendingString:@"/"];
 100 }
 101 - (NSString *)itemSlashLink {
 102   // this suxx, a) we need to write code, b) we need to attach the / manually
 103   return [[self item] stringByAppendingString:@"/"];
 104 }
 105
 106 @end /* DTable */