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Wiki source code of WebObjects with Scala

Version 275.1 by Ravi Mendis on 2009/09/15 20:14
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1 === What is Scala? ===
2
3 Scala is a modern language not unlike Groovy.
4 It is said to be more powerful (and faster) than Groovy or Rails which has been the reason for its adoption at sites like Twitter.
5
6 |= |= Objective-C |= Scala
7 |= Mutable/Immuable Datatypes | Collections (e.g: NSArray/NSMutableArray) | //All datatypes//
8 |= Concurrency | Grand Central Dispatch (extensions) | //Built-in// |
9
10 === Why Use Scala? ===
11
12 In a Web 2.0, building concurrent WebObjects applications is a must.
13 Developing and maintaining a concurrent or multi-threaded WebObjects application can be challenging.
14
15 Scala offers concurrency built into the language.
16 So it may offer new solutions to WO developers...
17
18 === Can WebObjects be Programmed With Scala? ===
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20 Yes. It is very simple.
21 Scala compiles to java bytecode. Hence using it with WebObjects is fairly straightforward.
22
23 == How to Develop WebObjects With Scala ==
24
25 1. [[Install the Scala eclipse IDE>>http://www.scala-lang.org/node/94]]
26 1. Add Scala support to your project
27 11. Right-click your project in the WO Explorer
28 11. In the context menu select Scala -> Add Scala Nature
29 1. Convert or use ##.scala## instead of ##.java## source
30
31 {{note title="Note"}}
32
33 This is for Eclipse/WOLips developers
34
35 {{/note}}
36
37 == WO Scala Example ==
38
39 The following is a mixed Java/Scala version of the WO Movies D2W app.
40 All the EO logic and WO components are in Scala.
41 Only the Application class is Java.
42
43 {{attachments patterns=".*zip"}}{{/attachments}}
44
45 === Setup ===
46
47 1. Install and run the OpenBase OBMovies database.
48 1. Right-click on Application.java and run as a WOApplication (as usual).
49
50 ==== EO Templates ====
51
52 See: [[Scala templates>>http://wiki.objectstyle.org/confluence/display/WOL/EOGenerator+Templates+and+Additions]]