LKDBHelper

this is sqlite ORM (an automatic database operation)
thread-safe and not afraid of recursive deadlock

QQ群号 113767274 有什么问题或者改进的地方大家一起讨论

简书：不定时更新 http://www.jianshu.com/users/376b950a20ec

#Big Upgrade 2.0

Supported NSArray,NSDictionary, ModelClass, NSNumber, NSString, NSDate, NSData, UIColor, UIImage, CGRect, CGPoint, CGSize, NSRange, int,char,float, double, long.. attribute to insert and select automation.

全面支持 NSArray,NSDictionary, ModelClass, NSNumber, NSString, NSDate, NSData, UIColor, UIImage, CGRect, CGPoint, CGSize, NSRange, int,char,float, double, long.. 等属性的自动化操作(插入和查询)

---

Requirements

• iOS 4.3+
• ARC only
• FMDB(https://github.com/ccgus/fmdb)

##Adding to your project

If you are using CocoaPods, then, just add this line to your PodFile

pod 'LKDBHelper'

If you are using Encryption, Order can not be wrong

pod 'FMDB/SQLCipher'
pod 'LKDBHelper'

@property(strong,nonatomic)NSString* encryptionKey;

##Basic usage

1 . Create a new Objective-C class for your data model

@interface LKTest : NSObject
@property(copy,nonatomic)NSString* name;
@property NSUInteger  age;
@property BOOL isGirl;

@property(strong,nonatomic)LKTestForeign* address;
@property(strong,nonatomic)NSArray* blah;
@property(strong,nonatomic)NSDictionary* hoho;

@property char like;
...

2 . in the *.m file, overwirte getTableName function (option)

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

3 . in the *.m file, overwirte callback function (option)

@interface NSObject(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 . Initialize your model with data and insert to database

    LKTestForeign* foreign = [[LKTestForeign alloc]init];
    foreign.address = @":asdasdasdsadasdsdas";
    foreign.postcode  = 123341;
    foreign.addid = 213214;
    
    //插入数据    insert table row
    LKTest* test = [[LKTest alloc]init];
    test.name = @"zhan san";
    test.age = 16;
    
    //外键 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":[NSDate date]};
    
    //同步 插入第一条 数据   Insert the first
    [test saveToDB];
    //or
    //[globalHelper insertToDB:test];
    

5 . select 、 delete 、 update 、 isExists 、 rowCount ...

    select:
        
        NSMutableArray* array = [LKTest searchWithWhere:nil orderBy:nil offset:0 count:100];
        for (id obj in arraySync) {
            addText(@"%@",[obj printAllPropertys]);
        }
        
    delete:
        
        [LKTest deleteToDB:test];
        
    update:
        
        test.name = "rename";
        [LKTest updateToDB:test where:nil];
        
    isExists:
        
        [LKTest isExistsWithModel:test];
    
    rowCount:
        
        [LKTest rowCountWithWhere:nil];
        
     

6 . Description of parameters "where"

 For example: 
        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'"

##table mapping

overwirte getTableMapping Function (option)

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

##table update (option)

+(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 = [NSString stringWithFormat:@"update %@ set error = name",tableName];
                [db executeUpdate:sql];
            }];
        }
    }
}

set column attribute (option)

+(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;
    }
}

##demo screenshot
table test data

foreign key data

---

Change-log

Version 1.1 @ 2012-6-20

• automatic table mapping
• support optional columns
• support column attribute settings
• you can return column content

Version 1.0 @ 2013-5-19

• overwrite and rename LKDBHelper
• property type support: UIColor,NSDate,UIImage,NSData,CGRect,CGSize,CGPoint,int,float,double,NSString,short,char,bool,NSInterger..
• fix a recursive deadlock.
• rewrite the asynchronous operation -
• thread-safe
• various bug modified optimize cache to improve performance
• test and demos
• bug fixes, speed improvements

Version 0.0.1 @ 2012-10-1

• Initial release with LKDAOBase

---

License

This code is distributed under the terms and conditions of the MIT license.

---

Contribution guidelines

• if you are fixing a bug you discovered, please add also a unit test so I know how exactly to reproduce the bug before merging

---

Contributors

Author: Jianghuai Li

Contributors: waiting for you to join