staticFMDatabase*_db;
＊＊＊＊＊创建数据库
+ (void)createDataBaseAndCreateTableWithPath{
NSString*path ＝[NSHomeDirectory()stringByAppendingPathComponent:
@"Documents/database.sqlite"];
NSFileManager*manager = [NSFileManager defaultManager];
if(![managerfileExistsAtPath:path]) {
[manager createFileAtPath:pathcontents:nilattributes:nil];
}
_db= [[FMDatabase databaseWithPath:path]retain];
if([_db open]) {
NSString*createSQL = [NSStringstringWithFormat:@"create table if not exists user (id integer primary key autoincrement,textStr text not null,idStr text not null,name text,href text,sourceString text)"];
[_dbexecuteUpdate:createSQL];
}
[_db close];
}
＊＊＊＊＊插入数据
+ (void)insertDataIntoUserWithArr:(NSArray*)arr{
for(StatusModel*model in arr) {
NSString*insertSQL = [NSStringstringWithFormat:@"insert into user (textStr,idStr,name,href,sourceString) values('%@','%@','%@','%@','%@')",model.text,model.idStr,model.userObj.name,model.sourceObj.href,model.sourceObj.sourceString];
NSLog(@"%@",insertSQL);
[_dbopen];
[_dbexecuteUpdate:insertSQL];
[_dbclose];
}
}
＊＊＊＊查询数据
+ (NSMutableArray*)selectDataFromUser{
[_dbopen];
NSMutableArray *arr = [NSMutableArray arrayWithCapacity:0];
NSString *selectSQL = [NSString stringWithFormat:@"select *from user"];
FMResultSet*set = [_dbexecuteQuery:selectSQL];
while([set next]) {
StatusModel *model = [[StatusModel alloc]init];
model.text= [set stringForColumn:@"textStr"];
model.idStr= [set stringForColumn:@"idStr"];
model.userObj= [[UserModel alloc] autorelease];
model.userObj.name= [set stringForColumn:@"name"];
model.sourceObj= [[SourceModel alloc] autorelease];
model.sourceObj.href= [set stringForColumn:@"href"];
model.sourceObj.sourceString= [setstringForColumn:@"sourceString"];
[arr addObject:model];
}
[_dbclose];
returnarr;
}
＊＊＊＊＊删除数据库
+ (void)deleteDatabase{
[_db open];
NSString *dropSQL = [NSString stringWithFormat:@"delete from user"];
[_db executeUpdate:dropSQL];
[_db close];
}