#import <Foundation/Foundation.h>
#import <FMDatabase.h>
#import "MyModel.h"@interface FMDBManager : NSObject
{FMDatabase *_dataBase;
}+(instancetype)shareInstance;- (BOOL)insert:(MyModel *)model;- (BOOL)deleteWithId:(NSString *)Id;- (BOOL)update:(NSString *)Id key:(NSString *)key value:(NSString *)value;- (NSMutableArray *)selectLimit:(NSInteger)index number:(NSInteger)number;- (NSMutableArray *)selectAll;- (NSUInteger)count;- (BOOL)isInclude:(NSString *)Id;@end

 

#import "FMDBManager.h"@implementation FMDBManager+ (instancetype)shareInstance
{static FMDBManager *manager;static dispatch_once_t onceToken;dispatch_once(&onceToken, ^{manager = [[FMDBManager alloc] init];});return manager;
}- (instancetype)init
{if (self = [super init]) {NSString *path = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/dataBase.db"];_dataBase = [[FMDatabase alloc] initWithPath:path];[_dataBase open];NSString *sql = @"create table if not exists personTable(id integer primary key autoincrement,ID varchar(256), name varchar(256),age varchar(256),height varchar(256),sex varchar(256))";if ([_dataBase executeUpdate:sql]) {NSLog(@"建表成功");} else {NSLog(@"建表失败");};}return self;
}- (BOOL)insert:(MyModel *)model
{NSString *sql = @"insert into personTable(ID, name, age, height, sex)values(?,?,?,?,?)";if ([_dataBase executeUpdate:sql,model.ID, model.name, model.age, model.height, model.sex]) {return YES;} else {return NO;}
}- (BOOL)deleteWithId:(NSString *)Id
{NSString *sql = @"delete from personTable where ID = ?";if ([_dataBase executeUpdate:sql,Id]) {return YES;} else {return NO;}
}
- (BOOL)update:(NSString *)Id key:(NSString *)key value:(NSString *)value
{NSString *sql = [NSString stringWithFormat:@"update personTable set %@ = ? where ID = ?",key];if ([_dataBase executeUpdate:sql,value,Id]) {return YES;} else {return NO;}
}
- (NSMutableArray *)selectLimit:(NSInteger)index number:(NSInteger)number
{NSString *sql = [NSString stringWithFormat:@"select *from personTable limit %ld, %ld",(long)index, (long)number];FMResultSet *s = [_dataBase executeQuery:sql];NSMutableArray *array = [[NSMutableArray alloc]init];while ([s next]) {MyModel *model = [[MyModel alloc] init];model.ID = [s stringForColumn:@"ID"];model.name = [s stringForColumn:@"name"];model.age = [s stringForColumn:@"age"];model.height = [s stringForColumn:@"height"];model.sex = [s stringForColumn:@"sex"];[array addObject:model];}return array;
}- (NSMutableArray *)selectAll
{FMResultSet *s = [_dataBase executeQuery:@"select *from personTable"];NSMutableArray *array = [[NSMutableArray alloc]init];while ([s next]) {MyModel *model = [[MyModel alloc] init];model.ID = [s stringForColumn:@"ID"];model.name = [s stringForColumn:@"name"];model.age = [s stringForColumn:@"age"];model.height = [s stringForColumn:@"height"];model.sex = [s stringForColumn:@"sex"];[array addObject:model];}return array;
}
- (NSUInteger)count
{FMResultSet *s = [_dataBase executeQuery:@"select count(*) from personTable"];NSUInteger c = 0;while ([s next]) {c = [s intForColumnIndex:0];}return c;
}
- (BOOL)isInclude:(NSString *)Id
{NSString *sql = @"select *from personTable where ID = ?";FMResultSet *set = [_dataBase executeQuery:sql,Id];while ([set next]) {return YES;}return NO;
}@end