Ask the Mormon

If you want to publicly ask a specific member a question, do so here.
User avatar
Deepfreeze32
Site Admin
Site Admin
Posts: 7043
Joined: Sun Oct 01, 2006 12:00 am
Are you human?: Yes!
Location: On the run from Johnny Law; ain't no trip to Cleveland

Re: Ask the Mormon

Postby Deepfreeze32 » Wed Apr 15, 2015 10:56 pm

So jumping back to OO design principles, how do you define "one" thing?

For instance, if I'm attempting to use a database via JDBC (because this was before I learned of ORM), does one thing mean an object that performs CRUD on the database (it only handles queries against that one database, basically), or does one thing mean a separate object for Creation, Read, Update, and Deletion? Or some other combination?

The way I traditionally did it was create an interface for Database connections that defined the CRUD methods (create(Object newObj), get(Object toGet), etc), and then have a separate implementation for each database (if, for instance, I wanted a stub database or a connection pool over direct connection, Oracle vs Postgres vs MySQL, etc). So if I am accessing three databases, I have three objects. And if I accessed them concurrently (e.g. I needed the data to be cloned across all of them), I might have a Database Manager object that contains those three db objects and sorts out the logic appropriately.

For web services, I would do something similar. We had a REST API that used JSON or XML, so I created a separate class for each request object (Like user, some data point, a collection containing references to both, etc), and implemented a method for each REST function (The HTTP commands GET, PUT, UPDATE, DELETE). Then when we manipulated data, we went to a manager object who held all of the service request objects.

In case you didn't gather from objects within objects, I was always taught "Make main as simple as possible, and encapsulate objects as much as possible. Ideally, main should use as few objects as necessary, within reason."

I think that's better than God objects, but not sure if that fits your definition. How do you view it?

User avatar
ArcticFox
CCGR addict
Posts: 3480
Joined: Mon Aug 13, 2007 12:00 am
Are you human?: Yes!
Contact:

Re: Ask the Mormon

Postby ArcticFox » Thu Apr 16, 2015 2:30 pm

If I'm creating a DB client then yeah, I'll generally have just one object do the CRUD operations, because in that case, the "one thing" is provide an access point for the DB.

In the case of having to be able to accommodate multiple databases, I actually did that very thing recently. In my case, I created an abstract superclass to define all the CRUD ops I wanted to support, and then derived all my specific DB classes from it.

When I create a new class I try to give it a name that tells you what it does. "ECGFileConverter" or "Phillips103Reader." That helps to remind me the specific "one thing" the class does, so in the Philips example, if I need to create a method that writes to a Philips103 ECG file, it doesn't belong in a class named Philips103Reader.

But hey, it may be that reading and writing from a Philips file is trivially simple, in which case it might be appropriate to have both operations in the same class, calling it something like Philips103FileManager. It all depends on the environment. In my case, I broke it up because the system I'm working on needs to accommodate several different ECG file formats (Like Philips, GE Muse, HL7, Schiller, etc.) Some are more complicated to deal with than others, so for the sake of consistency and clarity I have an abstract ECGFileLoader class, from which I derive specific Loaders for each ECG file. Separately, I have an abstract ECGFileWriter class, and derive from it several writers for the various ECG file formats.

So yeah, the definition is very situational, but I know a God object when I see one. When I first got into the meat of this project I had to break up a 4,000 line God object that created and managed several web service calls, including handling the callbacks as inner classes, as well as managing several FTP connections. (Talk about code duplication) all while processing ECG files along the way. Hideous.
"He who takes offense when no offense is intended is a fool, and he who takes offense when offense is intended is a greater fool."
—Brigham Young

"Don't take refuge in the false security of consensus."
—Christopher Hitchens

User avatar
Chozon1
Site Admin
Site Admin
Posts: 22960
Joined: Sun Dec 10, 2006 12:00 am
Location: In the shadows. Waiting for an oppurtune moment to create a dramatic entrance.

Re: Ask the Mormon

Postby Chozon1 » Fri Apr 17, 2015 5:59 am

Bitter nerds?
Image

User avatar
ArcticFox
CCGR addict
Posts: 3480
Joined: Mon Aug 13, 2007 12:00 am
Are you human?: Yes!
Contact:

Re: Ask the Mormon

Postby ArcticFox » Fri Apr 17, 2015 2:57 pm

Naw man, they're all sour.

Image
"He who takes offense when no offense is intended is a fool, and he who takes offense when offense is intended is a greater fool."
—Brigham Young

"Don't take refuge in the false security of consensus."
—Christopher Hitchens

User avatar
Deepfreeze32
Site Admin
Site Admin
Posts: 7043
Joined: Sun Oct 01, 2006 12:00 am
Are you human?: Yes!
Location: On the run from Johnny Law; ain't no trip to Cleveland

Re: Ask the Mormon

Postby Deepfreeze32 » Mon Apr 20, 2015 3:54 pm

The abomination that is CSS?

User avatar
ArcticFox
CCGR addict
Posts: 3480
Joined: Mon Aug 13, 2007 12:00 am
Are you human?: Yes!
Contact:

Re: Ask the Mormon

Postby ArcticFox » Mon Apr 20, 2015 5:21 pm

I hate CSS so bad I haven't the words.

I'm very fortunate to have a guy on my team who understands CSS well.
"He who takes offense when no offense is intended is a fool, and he who takes offense when offense is intended is a greater fool."
—Brigham Young

"Don't take refuge in the false security of consensus."
—Christopher Hitchens

User avatar
Deepfreeze32
Site Admin
Site Admin
Posts: 7043
Joined: Sun Oct 01, 2006 12:00 am
Are you human?: Yes!
Location: On the run from Johnny Law; ain't no trip to Cleveland

Re: Ask the Mormon

Postby Deepfreeze32 » Mon Apr 20, 2015 5:48 pm

I think you and I need this mug:

Image


Which one technology have you used that you would absolutely do away with if possible (If it's CSS, what's the second choice? :P )? Which one technology have you used that you would use more if you could?

User avatar
ArcticFox
CCGR addict
Posts: 3480
Joined: Mon Aug 13, 2007 12:00 am
Are you human?: Yes!
Contact:

Re: Ask the Mormon

Postby ArcticFox » Mon Apr 20, 2015 5:54 pm

I LOVE that mug...

I'd do away with JSP. I can't comprehend why new projects are still being started with a plan to use JSP technology. It's old, it's crusty, it's hard to work with and it is just a hot mess. It was a huge innovation when it was new, but its time has passed, with much better technologies available to do what JSPs do.

I'd use more Maven. Our team uses it for managing builds but there are a lot more things it can do to help us.
"He who takes offense when no offense is intended is a fool, and he who takes offense when offense is intended is a greater fool."
—Brigham Young

"Don't take refuge in the false security of consensus."
—Christopher Hitchens

User avatar
Chozon1
Site Admin
Site Admin
Posts: 22960
Joined: Sun Dec 10, 2006 12:00 am
Location: In the shadows. Waiting for an oppurtune moment to create a dramatic entrance.

Re: Ask the Mormon

Postby Chozon1 » Tue Apr 28, 2015 6:02 am

Adobe ovens?
Image

User avatar
Eagle Eyes
VIP Member
VIP Member
Posts: 1382
Joined: Mon Feb 23, 2009 5:56 pm
Are you human?: Yes!
Location: In my hubby's arms.

Re: Ask the Mormon

Postby Eagle Eyes » Tue Apr 28, 2015 12:40 pm

Once I took a straw, and held it in my fist where I had a hidden mini cup of coffee creamer. Then I drew my fist up to my face so it looked like I was stabbing myself in the eye with the straw... This pierced the creamer cup so white fluid came pouring out of the straw and through my fingers... And of course I screamed for effect...

Peoples' reactions were epic...
WOW!!

AWESOME! 8)
Never judge a book by it's cover
and don't underestimate them either.

User avatar
ArcticFox
CCGR addict
Posts: 3480
Joined: Mon Aug 13, 2007 12:00 am
Are you human?: Yes!
Contact:

Re: Ask the Mormon

Postby ArcticFox » Tue Apr 28, 2015 4:00 pm

Adobe ovens?
Hehe at first I thought it was a new software application...

Adobe Ovens 2.3 click here to install
"He who takes offense when no offense is intended is a fool, and he who takes offense when offense is intended is a greater fool."
—Brigham Young

"Don't take refuge in the false security of consensus."
—Christopher Hitchens

User avatar
Deepfreeze32
Site Admin
Site Admin
Posts: 7043
Joined: Sun Oct 01, 2006 12:00 am
Are you human?: Yes!
Location: On the run from Johnny Law; ain't no trip to Cleveland

Re: Ask the Mormon

Postby Deepfreeze32 » Tue Apr 28, 2015 4:22 pm

Hah, that's the first thing that came to mind too.

ExtraCredits is awesome?

User avatar
ArcticFox
CCGR addict
Posts: 3480
Joined: Mon Aug 13, 2007 12:00 am
Are you human?: Yes!
Contact:

Re: Ask the Mormon

Postby ArcticFox » Tue Apr 28, 2015 4:37 pm

100% pure, undistilled awesome.
"He who takes offense when no offense is intended is a fool, and he who takes offense when offense is intended is a greater fool."
—Brigham Young

"Don't take refuge in the false security of consensus."
—Christopher Hitchens

User avatar
Deepfreeze32
Site Admin
Site Admin
Posts: 7043
Joined: Sun Oct 01, 2006 12:00 am
Are you human?: Yes!
Location: On the run from Johnny Law; ain't no trip to Cleveland

Re: Ask the Mormon

Postby Deepfreeze32 » Fri May 01, 2015 6:21 pm

Star Wars games?

User avatar
ArcticFox
CCGR addict
Posts: 3480
Joined: Mon Aug 13, 2007 12:00 am
Are you human?: Yes!
Contact:

Re: Ask the Mormon

Postby ArcticFox » Fri May 01, 2015 6:28 pm

WAY hit or miss. In general licensed games tend toward weakness because there's usually a ridiculous deadline and they're relying on the name to sell the game. That said, when Star Wars games are good, they're AMAZING. My favorites include X-Wing, Rebellion and Galaxies.
"He who takes offense when no offense is intended is a fool, and he who takes offense when offense is intended is a greater fool."
—Brigham Young

"Don't take refuge in the false security of consensus."
—Christopher Hitchens


Return to “Ask The Members”

Who is online

Users browsing this forum: No registered users and 17 guests