原理

iOS 和 SQL的對應關系

Model類結構 => SQL表結構

Model實例 => SQL表中的一行

Model實例的屬性 => SQL表中的一列

 

Model和Table的對應

 

@interface TestModel :NSObject

@property (assign, nonatomic) NSInteger age;
@property (assign, nonatomic) CGFloat height;
@property (assign, nonatomic) long distance;
@property (assign, nonatomic) double maxDistance;
@property (assign, nonatomic) BOOL isOK;
@property (assign, nonatomic) char mChar;


@property (assign, nonatomic) CGRect rect;
@property (assign, nonatomic) CGPoint point;
@property (assign, nonatomic) CGSize size;
@property (assign, nonatomic) NSRange range;


@property (strong, nonatomic) NSNumber *number;
@property (strong, nonatomic) NSString *string;
@property (strong, nonatomic) UIColor *color;
@property (strong, nonatomic) NSDate *date;

@property (strong, nonatomic) NSData *data;// convert to data
@property (strong, nonatomic) NSValue *value;
@property (strong, nonatomic) UIImage *image;

@end

 

 

對應的表結構就是 TABLE TestModel (age type,height type,distance type,isOK type,mChar type,...)

 

方法

下面是一些可用的方法，還在完善中。。。

 

 

+(ModelToTableMap*)getModelToTableMap;

+(NSString*)getDBPath;
+(NSString*)getTableName;
+(NSArray*)getPrimaryKeys;

+(NSDictionary *)getPropertyToColumnMap;
+(NSDictionary *)getDefaultValueDictionary;
+(NSDictionary *)getLengthDictionary;
+(NSDictionary *)getCheckValueDictionary;
+(NSDictionary *)getIsUniqueDictionary;
+(NSDictionary *)getIsNotNullDictionary;

+(BOOL)shouldModelToTableMapContainParentProperties;
+(BOOL)shouldModelToTableMapContainSelfProperties;

+(NSString *)getDateFormatterString;
+(NSString *)getDBImagePathWithImageName:(NSString *)imgName ;
+(NSString *)getDBDataPathWithDataName:(NSString *)dataName;


+(BOOL)createTable;

+(BOOL)dropTable;


+(id)firstModelWhere:(NSObject *)where;
+(id)firstModelWhere:(NSObject *)where orderBy:(NSString*)orderBy ;


+(NSArray *)allModels;
+(NSArray *)findModelsWhere:(NSObject *)where;
+(NSArray *)findModelsWhere:(NSObject *)where orderBy:(NSString*)orderBy offset:(int)offset count:(int)count;


+(BOOL)insertModel:(NSObject *)model;
+(BOOL)insertModelWhenNotExists:(NSObject *)model;


+(BOOL)deleteModel:(NSObject *)model;
+(BOOL)deleteModelsWhere:(NSObject *)where;


+(BOOL)updateModelsWithModel:(NSObject *)model where:(NSObject *)where;
+(BOOL)updateModelsWithDictionary:(NSDictionary *)dic where:(NSObject *)where;


+(BOOL)isModelExists:(NSObject *)model;


- (BOOL)saveModel;
- (BOOL)deleteModel;
- (BOOL)updateModel:(NSObject *)theNewModel;
- (BOOL)updateModelWithDictionary:(NSDictionary *)dic;

 

使用

 

TestModel ＊model ＝ [[TestModel alloc] init］;
model.age = 20;
model.image = [UIImage imageNamed:@img.jpg];

//增加
[model saveModel]

//刪除
[model deleteModel]

//修改
[model updateModelWithDictionary:@{@age:@(21)}]

//查找
[TestModel allModels]