Groovy - PowerPoint PPT Presentation

Loading...

PPT – Groovy PowerPoint presentation | free to view - id: 6f35d8-M2ExM



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Groovy

Description:

... query the objects CRUD Operations Constraints Performance Optimizations Can be used outside of Grails, ... – PowerPoint PPT presentation

Number of Views:31
Avg rating:3.0/5.0
Slides: 14
Provided by: JeanB155
Category:
Tags: crud | groovy

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Groovy


1
Groovy Grails
  • Jean Barmash
  • CTO, EnergyScoreCards.com
  • www.nywebguy.com

2
Agenda
  • Groovy
  • Introduction
  • Examples
  • Grails
  • Introduction
  • Convention over Configuration
  • Build A Simple App

3
Groovy
  • Dynamic Language on JVM
  • Focus on programmer productivity
  • Focus on Essence vs. Ceremony
  • Superset of Java
  • Native Java Library Integration
  • Compiles into Java
  • Dynamic Typing
  • Native Syntax for Lists, Maps, Sets, Ranges

4
Very Sweet Tons of Syntactic Sugar
  • Tons of Options
  • Optional parentheses
  • Optional semicolons
  • Optional Return
  • Safe Dereferencing
  • Autoboxing
  • GStrings
  • Regular Expressions
  • Autogenerated Setters / Getters
  • Even Elvis.

5
Even Groovier
  • Closures
  • MixIns Categories
  • Advanced MetaProgramming Capabilities
  • AST (Abstract Syntax Tree) Transformations
  • Great XML Processing Capabilities
  • Object Builders / XML Builders
  • Easy to make DSLs
  • Google App Engine

6
Grails
  • Web Development framework inspired by Ruby on
    Rails
  • Convention over Configuration
  • DRY Do Not Repeat Yourself
  • More focused on domain objects than Rails
  • Underlying Libraries
  • Hibernate
  • Spring
  • SiteMesh
  • Quartz
  • J2EE / Servlet

7
Grails Key Features
  • Convention over Configuration
  • Domain Objects
  • Controllers
  • Views
  • Services
  • Dependency Injection

8
GORM
  • GORM Robust Domain Modeling Layer
  • Built on Top of Hibernate, which is hidden
  • Advanced Layer for modeling of relationships
  • Maps to Database over JDBC or JPA
  • Dynamic Finders query the objects
  • CRUD Operations
  • Constraints
  • Performance Optimizations
  • Can be used outside of Grails, including in Java
    Apps

9
UI Features
  • Scaffolding to generate Views
  • Layout Elements
  • VERY Easy TagLibs
  • Converters to create RESTful services

10
Plugins, Plugins, Plugins
  • A core concept in Grails
  • Unit of Functionality
  • Unit of Reusability
  • Unit of Integration
  • Creating a plugin is almost identical to creating
    an application
  • Over 200 Plugins in all sorts of areas
  • Central Repository
  • http//grails.org/plugin/home

11
Other Stuff
  • Gradle dependency resolution
  • Gant build tool
  • GPars actor concurrency library
  • Griphon Grails like framework for building
    Swing application

12
Resources
  • Groovy Usage Patterns
  • http//gettinggroovy.wordpress.com/2009/05/20/the-
    gr8-conference-groovy-usage-patterns/
  • Grails www.grails.org
  • Groovy http//groovy.codehaus.org

13
Demo
About PowerShow.com