The gTunes example will guide you through the development of a music store . A screenshot of the structure of a Grails application appears in Figure Grails is a full stack framework which aims to greatly simplify the task of building serious web applications for the JVM. The concepts within Grails, like. Customizing the Application Class For instructions on how to do this see the Gradle user guide "The Definitive Guide to Grails 2".

The Definitive Guide To Grails 2 Pdf

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Original filename: The Definitive Guide to Grails 2 teaches you all you need to know about this. PART 2. Grails by Example. CHAPTER Getting Started with Grails. Grails and author of The Definitive Guide to Grails—thank you for such an amazing. The Definitive Guide to Grails 2 [Jeff Scott Brown, Graeme Rocher] on site. com. *FREE* shipping on qualifying offers. Grails is a full stack framework which .

As a designer, I try to be aware of attempts at systems and methods of communication.

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While traveling the Tokyo rail lines, I quickly realized that apart from the obvious use of real-time electronic signage, colored trains, and audio announcements, there were also other techniques being used to assist travelers in knowing where they were, and where they were going.

These techniques were subtler, and bordered on subliminal; this was what really interested me. Of course, some of the trips on this network are irregular and spontaneous, and in those situations, the melodies are merely signals for when a train has stopped at the station. Because it is not uncommon for these trips to take over an hour, passengers tend to pass the time by reading small pocket novels, playing with their portable gaming systems, or furiously programming their cellphones.

To daily commuters, the station melodies augment the existing ambient landscape going through tunnels, turning corners, large landmarks, etc.

They quickly learn the melody of their final destination terminal it is played incessantly as they wait on the platform for their return journey , and soon recognize the melody of the terminal that precedes theirs. After long-term use of the same route, commuters build up a unique chain of melodies that accompany them on their way home.

Without necessarily realizing why, they begin to establish a familiarity with these sounds, and can quickly discover when they have overshot their destination by hearing an unfamiliar melody that indicates a strange place. Although subtle, this technique has a noticeable impact on assisting passengers to their destinations and so increases efficiencies in the rail network. When dealing with such large congestion and complexity, any efficiency improvements will have massive benefits for both the rail infrastructure and Tokyo itself.

The reason for discussing this is not to demonstrate how amazing the Tokyo rail network is it is! We can draw parallels between transport networks and their passengers, and websites and their users: both can be complex structures; both have navigable routes and destinations; and both can involve large groups of people using routes with the aid of wayfinding tools.

Both also involve users dealing with a sensory overload of sounds, distractions, visual noise, and time constraints.

For large-scale websites, the number of users may even be similar to large transport networks, and any efficiency improvement can have a positive impact on both user experience and overheads such as bandwidth and server load. This approach also has business benefits: users will make fewer mistakes; there will be fewer customer support issues; and fewer repair and maintenance.

There are differences between the two concepts that are subtler, however, and arguably more important. When dealing with transport, not all passengers are taking one journey with a common source and destination.

Instead, they are constantly getting on and off routes to complete their own unique journeys. With websites, there are usually established paths that tend to have beginning and end points with little need to end the process at certain points along the way.

Websites may need to demonstrate, for example, a change in status, a change in content, or a change in context.

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They may want to encourage a user to pause on a certain page or to bypass another. Living in the Java Ecosystem As well as leveraging Java frameworks that you know and love, Grails gives you a platform that allows you to take full advantage of Java and the JVM—thanks to Groovy. Groovy is designed to work seamlessly with Java at every level. This has powerful implications that might not be immediately apparent. For example, a Groovy object can implement Java.

Here was a language with capabilities similar to those of languages such as Ruby and Smalltalk running directly in the JVM. The potential is obvious, and the ability to intermingle Java code with dynamic Groovy code is huge.

In addition, Groovy allows mixing of static types and dynamic types, combining the safety of static typing with the power and flexibility to use dynamic typing where necessary. Across different programming platforms, varying idioms essentially express the same concept. Moving to a new platform requires relearning all of these concepts and their equivalent APIs or idioms—easy for some, a challenge for others.

Not that learning new things is bad, but a cost is attached to knowledge gain in the real world, a cost that can present a major stumbling block in the adoption of any new technology that deviates from the standards or conventions defined within the Java platform and the enterprise.

In addition, Java has standards for deployment, management, security, naming, and more. Grails is, however, a technology that speaks for itself: the moment you experience using it, a little light bulb will go on inside your head.

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We hope it will provide a broad understanding of Grails and its feature set.The obvious way to do these things has been to use overt high-frequency signifiers, such as iconography and language. Once an auction has met its reserve, an ambient signifier of color could change from yellow to red.

Graeme Rocher , Grails lead and founder, and Jeff Brown bring you completely up—to—date with their authoritative and fully comprehensive guide to the Grails framework.

Using some common scenarios, we can explore how ambient signifiers can offer a new implicit level of communication—implicit in that they are not designed to be relied upon without prior knowledge such as breadcrumbs, core navigation, and headings , but rather to indicate context, status, and location through suggestive cues that may be only be received subconsciously and enhanced through experience.

Jeff worked for G2One Inc.

In cases like those presented above, current web designs tend to communicate using overt signifiers such as icons and text. Come hear about MySQL from the experts at Oracle as well as leading experts in the database community. Show all.