Vector, Hashtable, Java Collections

["Shapira, Yoav" <Yo...@mpi.com>]

Hi,
Looking at the XML-RPC source code, I see mostly java.util.Vector and
java.util.Hashtable used as opposed to the java.util.List (or
java.util.Collection) and java.util.Map interfaces.  Why is that?  Is it
to allow compiling and using XML-RPC with JDK 1.1?  Or perhaps another
reason?  A similar question follows as to the implementation types, i.e.
why not use ArrayList and HashMap?  

Looking at XmlWriter, it would be trivial to modify it to accept a Map
instead of Hashtable and a List instead of Vector.  I'd be happy to
contribute a patch...

Yoav Shapira
Millennium ChemInformatics





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Re: Vector, Hashtable, Java Collections

[Ryan Hoegg <rh...@isisnetworks.net>]

John Wilson wrote:

>
> On 13 Jan 2004, at 18:21, Shapira, Yoav wrote:
>
>>
>> Hi,
>> Looking at the XML-RPC source code, I see mostly java.util.Vector and
>> java.util.Hashtable used as opposed to the java.util.List (or
>> java.util.Collection) and java.util.Map interfaces.  Why is that?  Is it
>> to allow compiling and using XML-RPC with JDK 1.1?
>
>
> We have users who build the client into Applets. They are (or were) 
> concerned that using Java 2 collections would break thier code on some 
> platforms.
>
This has come up in conversations with users that I have had off list.  
I think for 2.0 I would like to create an applet subproject and migrate 
the core to Java 1.2.  There are several opportunities for modularizing 
the code that I'd like to explore; your MinML-RPC project might fit 
right in if we structure things right.  I'd like to be able to deliver 
server-only and client-only jars as well as allow alternate transports 
seamlessly by adding a jar to the classpath.  Finally, I'd like to move 
away from the static base class XmlRpc that we have now to something 
using composition.

Hopefully I can make time soon to get started!

--
Ryan Hoegg
ISIS Networks
http://www.isisnetworks.net

Re: Vector, Hashtable, Java Collections

[John Wilson <tu...@wilson.co.uk>]

On 13 Jan 2004, at 18:21, Shapira, Yoav wrote:

>
> Hi,
> Looking at the XML-RPC source code, I see mostly java.util.Vector and
> java.util.Hashtable used as opposed to the java.util.List (or
> java.util.Collection) and java.util.Map interfaces.  Why is that?  Is 
> it
> to allow compiling and using XML-RPC with JDK 1.1?

We have users who build the client into Applets. They are (or were) 
concerned that using Java 2 collections would break thier code on some 
platforms.



John Wilson
The Wilson Partnership
http://www.wilson.co.uk