反射类属性方法

反射类属性方法"/>

反射类属性方法

// AdModel.h
@interface AdModel: NSObject
{
}@property (nonatomic, assign) int       row;
@property (nonatomic, retain) NSString *picture;@end

// AdModel.m
@implementation AdModel@synthesize row      = _row;
@synthesize picture  = _picture;- (void)dealloc
{[_picture release];[super dealloc];
}@end

用SQLiteHelper将数据库内容返回NSDictionary

然后通过反射类属性将数据保存到实体集合

// NSObject+Add- (NSArray *)getPropertyListByClass: (Class)clazz
{u_int count; objc_property_t *properties  = class_copyPropertyList(clazz, &count);NSMutableArray *propertyArray = [NSMutableArray arrayWithCapacity:count];for (int i = 0; i < count ; i++) { const char* propertyName = property_getName(properties[i]);[propertyArray addObject: [NSString  stringWithUTF8String: propertyName]];} free(properties);return propertyArray;
}

#define AD_INFO_QUERY  \
@"SELECT * FROM ad ORDER BY row"- (NSArray *)queryAdInfo
{    NSMutableArray *adEntityArray   = nil;NSUInteger     count            = [[_sqliteHelper countRowsAtTable: @"ad"] intValue];NSString     *conn   = [NSString stringWithFormat: AD_INFO_QUERY];SQLiteHelper *obj    = [_sqliteHelper getQuery: conn];if (obj != nil){adEntityArray         = [NSMutableArray arrayWithCapacity: count];NSArray *propertyList = [self getPropertyListByClass: [EntityAdInfo class]];for (NSMutableDictionary *dic in obj){EntityAdInfo *adEntity = [[EntityAdInfo alloc] init];for (NSString *key in propertyList){[adEntity setValue: [dic objectForKey: key] forKey: key];}[adEntityArray addObject: adEntity];[adEntity release];}}return adEntityArray;
}