5.1基于SQLite快速開發封裝庫

5.1基于SQLite快速開發封裝庫

一 LKDBHelper簡介

LKDBHelper是github上開源的資料庫操作封裝庫。

全面支援 NSArray,NSDictionary, ModelClass, NSNumber, NSString, NSDate,NSData, UIColor, UIImage, CGRect, CGPoint, CGSize, NSRange, int,char,float,double, long.. 等屬性的自動化操作(插入和查詢)。

二 如何引用LKDBHelper

*必備環境

•  iOS 4.3+

•  ARC only

•  FMDB(https://github.com/ccgus/fmdb)

1 可以使用pod導入，pod'LKDBHelper', '~> 2.1.9'。

2 手動導入，依賴于FMDB，添加libsqlite3.dylib。

三LKDBHelper使用說明

1建立一個Model

@interfaceLKTest : NSObject @property(copy,nonatomic)NSString* name; @propertyNSUInteger  age; @propertyBOOL isGirl; @property(strong,nonatomic)LKTestForeign* address; @property(strong,nonatomic)NSArray* blah; @property(strong,nonatomic)NSDictionary* hoho; @propertychar like; ...

2在.m檔案重寫getTableName方法

+(NSString *)getTableName {     return@"LKTestTable"; }

3在.m檔案重寫callback方法（可選）

@interfaceNSObject(LKDBHelper_Delegate) +(void)dbDidCreateTable:(LKDBHelper*)helper tableName:(NSString*)tableName; +(void)dbDidAlterTable:(LKDBHelper*)helper tableName:(NSString*)tableName addColumns:(NSArray*)columns; +(BOOL)dbWillInsert:(NSObject*)entity; +(void)dbDidInserted:(NSObject*)entity result:(BOOL)result; +(BOOL)dbWillUpdate:(NSObject*)entity; +(void)dbDidUpdated:(NSObject*)entity result:(BOOL)result; +(BOOL)dbWillDelete:(NSObject*)entity; +(void)dbDidDeleted:(NSObject*)entity result:(BOOL)result; ///data read finish +(void)dbDidSeleted:(NSObject*)entity; @end

4 初始化Model，插入資料庫

LKTestForeign* foreign = [[LKTestForeign alloc]init];     foreign.address = @":asdasdasdsadasdsdas";     foreign.postcode  = 123341;     foreign.addid = 213214;     //插入資料    insert table row     LKTest* test = [[LKTest alloc]init];     test.name = @"zhan san";     test.age = 16;     //外鍵 foreign key     test.address = foreign;     test.blah = @[@"1",@"2",@"3"];     test.blah = @[@"0",@[@1],@{@"2":@2},foreign];     test.hoho = @{@"array":test.blah,@"foreign":foreign,@"normal":@123456,@"date":[NSDatedate]};     //異步插入第一條資料   Insert the first     [test saveToDB];     //or     //[globalHelper insertToDB:test];

5 select（查詢）

NSMutableArray* array = [LKTest searchWithWhere:nilorderBy:niloffset:0count:100];         for (id obj in arraySync) {             addText(@"%@",[obj printAllPropertys]);         }

6 delete（删除）

[LKTest deleteToDB:test];

7 update（更新）

test.name = "rename";         [LKTest updateToDB:test where:nil];

8 isExists（是否存在）

[LKTest isExistsWithModel:test];

9 rowCount（函數）

[LKTest rowCountWithWhere:nil];        }

10 查詢條件舉例

single:  @"rowid = 1"                         or      @{@"rowid":@1}         more:    @"rowid = 1 and sex = 0"             or      @{@"rowid":@1,@"sex":@0}                     when where is "or" type , such as @"rowid = 1 or sex = 0"                     you only use NSString         array:   @"rowid in (1,2,3)"                  or      @{@"rowid":@[@1,@2,@3]}         composite:  @"rowid in (1,2,3) and sex=0 "      or      @{@"rowid":@[@1,@2,@3],@"sex":@0}         If you want to be judged , only use NSString         For example: @"date >= '2013-04-01 00:00:00'"

11 table mapping（表映射）

+(NSDictionary *)getTableMapping {     //return nil     return @{@"name":LKSQLInherit,              @"MyAge":@"age",              @"img":LKSQLInherit,              @"MyDate":@"date",              @"color":LKSQLInherit,              @"address":LKSQLUserCalculate}; }

12 table update(option)（表更新）

+(void)dbDidAlterTable:(LKDBHelper *)helper tableName:(NSString *)tableName addColumns:(NSArray *)columns {     for (int i=0; i<columns.count; i++)     {         LKDBProperty* p = [columns objectAtIndex:i];         if([p.propertyName isEqualToString:@"error"])         {             [helper executeDB:^(FMDatabase *db) {                 NSString* sql = [NSStringstringWithFormat:@"update %@ set error = name",tableName];                 [db executeUpdate:sql];             }];         }     } }

13 set columnattribute (option)（設定列名）

+(void)columnAttributeWithProperty:(LKDBProperty *)property {     if([property.sqlColumnName isEqualToString:@"MyAge"])     {         property.defaultValue = @"15";     }     if([property.propertyName isEqualToString:@"date"])     {         property.isUnique = YES;         property.checkValue = @"MyDate > '2000-01-01 00:00:00'";         property.length = 30;     } }

四 詳見Demo：5.1基于SQLite快速開發封裝庫

github位址：https://github.com/li6185377/LKDBHelper-SQLite-ORM