ArrayList instead of List in query results??

sarahsmith_books · **Joined:** Thu Oct 20, 2005 1:03 pm **Posts:** 38

Is there any plan to have a hibernate query return an ArrayList instead of a List?

kochcp · **Posted:** Tue Oct 25, 2005 1:50 pm

just build an arraylist out of the list in your code. that's basically what would happen in the hibernate code if they did it.

snpesnpe · **Joined:** Sat Jun 12, 2004 4:49 pm **Posts:** 915

ArrayList is implementation and i think that hibernate will do this never

Why you need ArrayList ?

kochcp · **Posted:** Tue Oct 25, 2005 2:07 pm

snpespe is right.

but if you're dyin to get that ArrayList made in the code, the result List is built in the SessionImpl.java file :)

sarahsmith_books · **Joined:** Thu Oct 20, 2005 1:03 pm **Posts:** 38

snpesnpe wrote:

ArrayList is implementation and i think that hibernate will do this never

Why you need ArrayList ?

We use ArrayList in all of our code and I just thought, wouldn't it be nice if I didn't have to convert all the Lists to ArrayLists to use my results.

sarahsmith_books · **Joined:** Thu Oct 20, 2005 1:03 pm **Posts:** 38

kochcp wrote:

snpespe is right.

but if you're dyin to get that ArrayList made in the code, the result List is built in the SessionImpl.java file :)

Nooooooo thanks! I don't want to get into customizing Hibernate code.. :-)

snpesnpe · **Joined:** Sat Jun 12, 2004 4:49 pm **Posts:** 915

Quote:

We use ArrayList in all of our code and I just thought, wouldn't it be nice if I didn't have to convert all the Lists to ArrayLists to use my results.

you have to use interface instead implementation

kochcp · **Posted:** Tue Oct 25, 2005 3:10 pm

sarahsmith_books wrote:

Nooooooo thanks! I don't want to get into customizing Hibernate code.. :-)

sorry, I'm on a change the code kick today.

List can be traversed just like ArrayList because ArrayList implements List so I don't see what the problem is.

pksiv · **Posted:** Tue Oct 25, 2005 3:21 pm

kochcp wrote:

sarahsmith_books wrote:

Nooooooo thanks! I don't want to get into customizing Hibernate code.. :-)

sorry, I'm on a change the code kick today.

List can be traversed just like ArrayList because ArrayList implements List so I don't see what the problem is.

The problem is all of her existing methods are returning ArrayList (bad programming practice but it is what it is) and she has to convert all of the List's to ArrayList before returning them.

kochcp · **Posted:** Tue Oct 25, 2005 3:31 pm

pksiv wrote:

The problem is all of her existing methods are returning ArrayList (bad programming practice but it is what it is) and she has to convert all of the List's to ArrayList before returning them.

well I know that. I guess I didn't understand why they would be returning ArrayLists instead of Lists.

sarahsmith_books · **Joined:** Thu Oct 20, 2005 1:03 pm **Posts:** 38

well guys,
some of us here think they are better. :-)

pksiv · **Posted:** Tue Oct 25, 2005 9:12 pm

sarahsmith_books wrote:

well guys,
some of us here think they are better. :-)

Care to elaborate ?

sarahsmith_books · **Joined:** Thu Oct 20, 2005 1:03 pm **Posts:** 38

pksiv wrote:

sarahsmith_books wrote:

well guys,
some of us here think they are better. :-)

Care to elaborate ?

Sorry, I was being facetious. My apololgies. I haven't really questioned why ArrayLists were used to begin with. I'm new to the team. But I'm sure there was a good reason. If I find out, I'll let you know.

jamie_dainton · **Posted:** Wed Oct 26, 2005 3:46 am

There wasn't a good reason. Just people who don't really understand what an interface is and what an implementation is.

sarahsmith_books · **Joined:** Thu Oct 20, 2005 1:03 pm **Posts:** 38

jamie_dainton wrote:

There wasn't a good reason. Just people who don't really understand what an interface is and what an implementation is.

These people have been programming for zillions of years. I can't believe they wouldn't understand the benefits of interfaces vs implementations.