JRuby Cookbook by Justin Edelson

By Justin Edelson

In case you are attracted to JRuby, you most likely don't want a turorial on Ruby, Rails, or Java - you simply want to know tips on how to get issues performed. This Cookbook deals sensible suggestions for utilizing the Java implementation of the Ruby language, with designated recipes for deploying Rails net functions on Java servers, integrating JRuby code with Java applied sciences, constructing JRuby computing device functions with Java toolkits, and extra.

Show description

Read or Download JRuby Cookbook PDF

Similar object-oriented design books

Pro Active Record: Databases with Ruby and Rails

Seasoned energetic list is helping you are taking benefit of the complete energy of your database engine from inside your Ruby courses and Rails functions. ActiveRecord, a part of the magic that makes the Rails framework so robust and straightforward to take advantage of, is the version component to Rails model/view/controller framework. Its an object-relational mapping library allowing you to have interaction with databases from either Ruby and Rails purposes.

Liferay 6.2 User Interface Development

Liferay employs a really expert theming approach for you to switch the feel and appear of the consumer interfaces. Liferay Portal presents structure templates that allows you to describe how a variety of columns and rows are prepared to demonstrate portlets. It additionally offers topics that may be used to customise the final appear and feel of websites and websites.

Control flow semantics

Regulate move Semantics provides a unified, formal remedy of the semantics of a large spectrum of keep an eye on stream notions as present in sequential, concurrent, common sense, object-oriented, and sensible programming languages. while in additional conventional methods one specializes in input/output habit, during this paintings equivalent realization is dedicated to finite and endless computations, the latter stimulated by means of the becoming significance of reactive platforms.

Apache Camel Developer's Cookbook

Apache Camel is a de-facto regular for constructing integrations in Java, and relies on well-understood company Integration styles. it truly is used inside many advertisement and open resource integration items. Camel makes universal integration projects effortless whereas nonetheless supplying the developer with the ability to customise the framework while the placement calls for it.

Extra info for JRuby Cookbook

Sample text

It’s highly advised that you set a maximum number of runtimes for your production application because by default Warbler will allow for an unlimited number of runtimes. runtimes This sets the most number of active JRuby runtimes in the pool, which determines the maximum number of simultaneous requests. Default value is unlimited. runtimes This determines the number of “warm” runtimes or the minimum number of runtimes in the pool. It also dictates how many instances when the application is started.

It is built on the Rake build system and JRuby-Rack servlet adapter. 2 Packaging Rails As a Java EE Web Application | 37 to process the static content rather than Rails. Early versions of Warbler used the GoldSpike servlet, but the GoldSpike project has been deprecated and has been replaced by JRuby-Rack. The JRuby-Rack library includes a stub version of the GoldSpike servlet in order to maintain compatibility with legacy GoldSpike applications. The unpacked source of the WAR file is found in the newly created tmp/war folder in the project’s home directory.

More information about Buildr can be found in Chapter 6. 8 Extending a Java Class in Ruby | 17 Discussion The fact that the same syntax is used to extend both Java and Ruby classes is an important design feature of JRuby, as it furthers the seamless integration between the two languages. One notable exception to this recipe is classes that use Java 5 generics. Currently, these cannot be subclassed with Ruby classes. Abstract Java classes can also be extended by Ruby classes. Examples 1-14 and 1-15 show an example of an abstract Java class and a concrete Ruby class that extends the former.

Download PDF sample

Rated 4.24 of 5 – based on 17 votes