0227 数据库的知识

.h

//

// DBOperation.h

// 2DataBaseSecond

//

// Created by Cecilia on 14-10-16.

// Copyright (c) 2014年 Cecilia. All rights reserved.

//

#import <Foundation/Foundation.h>

#import "FMDatabase.h"

#import "ContactssModel.h"

@interface DBOperation : NSObject{

FMDatabase *_db;

}

//单例

-(void)createTable;

+(DBOperation *)shareDBOperation;

//插入

-(void)insertDataWithModel:(ContactssModel *)um;

//删除

-(void)deleteDataWithModel:(ContactssModel *)um;

//修改:update

-(void)updateDataWithModel:(ContactssModel *)um;

//查询是否有某条数据

-(BOOL)isExistWithModel:(ContactssModel *)um;

// 查询某一类数据 Patient Consult Friends

-(NSMutableArray *)FindDataFromdbWithType:(NSString *)TypeStr;

//仅仅插入数据 如果有 不修改

-(void)OnlyinserDataWitModel:(ContactssModel *)model;

//查询所有

-(NSMutableArray *)selectAllData;

//查询某一条数据

-(ContactssModel *)getDataFormodel:(NSString *)ID;

// 返回一类数据 比如患者 或者好友

-(NSMutableArray * )FindDataFromdbWithType:(NSString *)TypeStr;

@end

.m

//

// DBOperation.m

// 2DataBaseSecond

//

// Created by Cecilia on 14-10-16.

// Copyright (c) 2014年 Cecilia. All rights reserved.

//

#import "DBOperation.h"

#import "FMDatabase.h"

#import "ContactssModel.h"

#import <CommonCrypto/CommonDigest.h>

@implementation DBOperation

//非标准单例

+(DBOperation *)shareDBOperation{

static DBOperation *db = nil;

@synchronized(self){ //同步

if (db == nil) {

db = [[self alloc]init];

}

return db;

}

}

// 删除 某一个表

-(void)deletetableFor:(NSString * )tablename{

NSString *sttr =[NSString stringWithFormat:@"DROP TABLE %@",tablename];

[_db executeUpdate:sttr];

}

//初始化

-(id)init{

if (self == [super init]) {

//创建数据库

NSString *paths =NSHomeDirectory();

NSString *loginInfo =@"zhege difang shi jiashuju ";

//[[NSUserDefaults standardUserDefaults] valueForKey:@"Uuid"];

const char *cStr = [loginInfo UTF8String];

unsigned char result[16];

CC_MD5(cStr, (CC_LONG)strlen(cStr), result);

NSString* MD5 = [NSString stringWithFormat:@"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",result[0], result[1], result[2], result[3], result[4], result[5], result[6], result[7],result[8], result[9], result[10], result[11],result[12], result[13], result[14], result[15]];

paths =[NSString stringWithFormat:@"%@/Documents/%@.db",paths,MD5];

NSLog(@"path = %@",paths);

_db = [[FMDatabase alloc]initWithPath:paths];

BOOL ret = [_db open];

if (ret) {

//打开数据库成功 -- > 创建表

[self createTable];

}

}

return self;

}

#pragma mark - 数据库操作

//1.创建表 user 表

-(void)createTable{/*

Uuid; // 用户的uuid

@property (strong ,nonatomic) NSString * mobile; // 用户的电话号码

@property (strong ,nonatomic) NSString * realeName; // 用户的 名字

@property (strong ,nonatomic) NSString * photo; // x用户的头像

@property (strong ,nonatomic) NSString * Type; //

*/

NSString *str = @"create table if not exists user(uuid,mobile,realeName,photo,Type)";

BOOL ret = [_db executeUpdate:str];

if (ret) {

NSLog(@"表创建成功");

}

else{

NSError *error = _db.lastError;

NSLog(@"表创建失败,%@",error);

}

}

//增加 修改

-(void)insertDataWithModel:(ContactssModel *)um{

// 判断当前数据库中是否已经有该条数据

BOOL isHas = [self isExistWithModel:um];

//如果没有 --> 执行插入操作

if (!isHas) {

NSString *str = @"insert into user values(?,?,?,?,?)";

BOOL ret = [_db executeUpdate:str,um.Uuid,um.mobile,um.realeName,um.photo,um.Type];

if (ret) {

NSLog(@"插入成功");

}

else{

NSLog(@"插入失败");

}

}

//如果有 --> 执行修改操作

else{

[self updateDataWithModel:um];

}

}

// 只增加

-(void)OnlyinserDataWitModel:(ContactssModel *)model{

// 判断当前数据库中是否已经有该条数据

BOOL isHas = [self isExistWithModel:model];

//如果没有 --> 执行插入操作

if (!isHas) {

NSString *str = @"insert into user values(?,?,?,?,?)";

BOOL ret = [_db executeUpdate:str,model.Uuid,model.mobile,model.realeName,model.photo,model.Type];

if (ret) {

NSLog(@"插入成功");

}

else{

NSLog(@"插入失败");

}

}

}

//删除

-(void)deleteDataWithModel:(ContactssModel *)um{

// NSString *str = @"delete from user where ID=?";

// BOOL ret = [_db executeUpdate:str,um.ID];

// if (ret) {

// NSLog(@"删除成功");

// }

// else{

//

// }

}

//修改:update

-(void)updateDataWithModel:(ContactssModel *)um{

// 修改数据uuid,mobile,realeName,photo,Type

NSString *str = @"update user set mobile=?,realeName=?,photo=?,Type=? where uuid=? ";

BOOL ret = [_db executeUpdate:str,um.mobile ,um.realeName,um.photo,um.Type ,um.Uuid];

if (ret) {

NSLog(@"修改成功");

}

else{

NSLog(@"修改失败");

}

//

}

//查询:select

//1.查询是否有某条数据

-(BOOL)isExistWithModel:(ContactssModel *)um{

um.Uuid =[um.Uuid stringByReplacingOccurrencesOfString:@"aaf98f89516bf50b015174e9d5ea1110#" withString:@""];

um.Uuid =[NSString stringWithFormat:@"aaf98f89516bf50b015174e9d5ea1110#%@",um.Uuid];

NSString *str = @"select *from user where uuid=?";

//FMResultSet:查询结果集合

FMResultSet *set = [_db executeQuery:str,um.Uuid];

//[set next] --> 如果有进行一条，进入到循环里，否则，不进循环

if ([set next]) {

return YES;

}

else{

return NO;

}

}

-(NSMutableArray *)FindDataFromdbWithType:(NSString *)TypeStr{

NSMutableArray * dataArrAy =[[NSMutableArray alloc]init];

NSString *str = @"select *from user where Type=?";

//FMResultSet:查询结果集合

FMResultSet *set = [_db executeQuery:str,TypeStr];

//[set next] --> 如果有进行下一条，进入到循环里，否则，不进循环

if ([set next]) {

ContactssModel * model =[[ContactssModel alloc]init];

int numbercolumn = 0;

model.Uuid =[set objectForColumnIndex:numbercolumn];numbercolumn++;

model.mobile =[set objectForColumnIndex:numbercolumn];numbercolumn++;

model.realeName =[set objectForColumnIndex:numbercolumn];numbercolumn++;

model.photo =[set objectForColumnIndex:numbercolumn];numbercolumn++;

model.Type =[set objectForColumnIndex:numbercolumn];numbercolumn ++;

[dataArrAy addObject:model];

}else{

}

return dataArrAy;

}

//获取 某一条数据

-(ContactssModel *)getDataFormodel:(NSString *)ID{

ID =[ID stringByReplacingOccurrencesOfString:@"aaf98f89516bf50b015174e9d5ea1110#" withString:@""];

ID =[NSString stringWithFormat:@"aaf98f89516bf50b015174e9d5ea1110#%@",ID];

ContactssModel * Friend =[[ContactssModel alloc]init];

NSString *str = @"select *from user where uuid=?";

//FMResultSet:查询结果集合

FMResultSet *set = [_db executeQuery:str,ID];

int numberummInde = 0;

if([set next]){

Friend.Uuid =[set objectForColumnIndex:numberummInde];numberummInde++;

Friend.mobile =[set objectForColumnIndex:numberummInde];numberummInde++;

Friend.realeName =[set objectForColumnIndex:numberummInde];numberummInde++;

Friend.photo =[set objectForColumnIndex:numberummInde];numberummInde++;

Friend.Type =[set objectForColumnIndex:numberummInde];numberummInde++;

numberummInde =0;

}

return Friend;

}

//2.查询所有 获取所有数据

-(NSMutableArray *)selectAllData{

NSMutableArray *arr = [[NSMutableArray alloc]init];

//

// NSString *str = @"select *from user";

// FMResultSet *set = [_db executeQuery:str];

// while ([set next]) {

// [arr addObject:Friend];

// }

return arr;

}

@end

//模型

#import <Foundation/Foundation.h>

@interface ContactssModel : NSObject

// uuid mobile realName photo

@property (strong ,nonatomic) NSString * Uuid; // 用户的uuid

@property (strong ,nonatomic) NSString * mobile; // 用户的电话号码

@property (strong ,nonatomic) NSString * realeName; // 用户的 名字

@property (strong ,nonatomic) NSString * photo; // 用户的头像

@property (strong ,nonatomic) NSString * Type; // 用户的类型 患者 医生

+(id)MakeModelWithDic:(NSDictionary *)Dic;

@end

#import "ContactssModel.h"

@implementation ContactssModel

+(id)MakeModelWithDic:(NSDictionary *)Dic{

/*

@property(strong,nonatomic)NSString * Uuid;

@property(strong,nonatomic)NSString * mobile;

@property(strong,nonatomic)NSString * realeName;

@property(strong,nonatomic)NSString * photo;

*/

// static ContactssModel * demodel;

// static dispatch_once_t demodelClassonce;

// dispatch_once(&demodelClassonce, ^{

// demodel =[[ContactssModel alloc]init];

//

// });

ContactssModel * model =[[ContactssModel alloc]init];

model.Uuid =[NSString stringWithFormat:@"aaf98f89516bf50b015174e9d5ea1110#%@",[Dic objectForKey:@"uuid"]];

model.Uuid =[model.Uuid stringByReplacingOccurrencesOfString:@"aaf98f89516bf50b015174e9d5ea1110#" withString:@""];

model.Uuid =[NSString stringWithFormat:@"aaf98f89516bf50b015174e9d5ea1110#%@",model.Uuid];

model.mobile =[NSString stringWithFormat:@"%@",[Dic objectForKey:@"mobile"]];

model.realeName =[NSString stringWithFormat:@"%@",[Dic objectForKey:@"realName"]];

model.photo =[NSString stringWithFormat:@"%@",[Dic objectForKey:@"photo"]];

return model;

}

@end