Grails Key Architecture Consideration

Grails is an Open Source, full stack, web application framework for the JVM. It takes advantage of the Groovy programming language and convention over configuration to provide a productive and stream-lined development experience. Below diagram depicts the high level Grails Architecture:

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Grails UnitTesting & Deployment

Unit Testing
GrailsUnitTestCase and GroovyTestCase both extend JUnit 3.x TestCase.MVC Unit Test case will extend GrailsUNitTest case and delegate the test case control to ControllerUnitTestCase and TagLibUnitTestCase

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Grails Services

Services

Grails Service uses to separate your business logic from the other layer or component. Services are named in the format SomeNameService.groovy and placed in the directory /grails-app/services/. Services can make use of dependency injection features, and you can easily call these services from within controllers. Continue reading

Grails – GSP

GSP

Grails uses GSP for the presentation tier. The Groovy in Groovy Server Pages not only identifies the underlying technology, but also the language you can use if you want to write a quick scriptlet or two. Groovy Taglib and partial templates give you a more sophisticated way of sharing code and behavior across Web pages. Continue reading

Grails Understanding

Grails

Grails is a web framework based on Groovy and Java which can be deployed into existing Java web servers, e.g. Tomcat or Jetty. Its scaffolding capabilities let you create a new project within a few minutes. Grails is based on the “convention over configuration” idea which allows the application to auto-wires itself based on naming schemes (instead of using configuration files, e.gl XML files). Continue reading