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Groovy and Grails Course Content :

1. Language Overview

• What is Groovy?
• What Groovy can do
• Java programmers
• Script programmers
• Agile programming
• Installing
• Running Groovy scripts

2. Basic syntax and Scalar variables

• Syntax rules
• Numbers
• Integers
• Floats
• BigDecimal
• Strings
• Double quoted
• Single quoted
• Here documents
• Slash quoted
• GStrings
• Operators

3. Collections

• Lists
• Coding a closure
• The it parameter
• Passing multiple parameters
• Naming parameters (the -> operator)
• Maps
• Ranges

4. Flow Control

• If statements
• The truth in Groovy
• Switch statements
• While loops
• For loops
• Exceptions

5. Classes

• Defining classes
• File-to-class relationships
• Member variables
• Automatic getter/setter generation
• Default visibility
• Safe dereferencing with ? operator
• Methods
• Optional parameters and default parameters
• Operator overloading
• Automatic constructor generation
• Initializing property values in the constructor
• The Closure Groovy class
• Coding a method that expects a closure
• Calling into the closure
• Passing parameters

6. Advanced Classes and Closures

• Closures
• Using methods as closures
• Polymorphic closures
• Operator overloading
• Metaprogramming
• Discovering a class
• Discovering fields
• Discovering methods
• Method resolution
• MetaClass
• MetaProperty
• MetaMethod
• Pointers
• Method
• Field
• Calling methods that do not exist
• ExpandoMetaClass
• Categories

7. Regular Expressions

• Regular Expression syntax
• The =~ operator
• The ==~ operator
• Common methods that use Regular Expressions

8. Builders and Slurpers

• What are Builders and Slurpers?
• NodeBuilder
• MarkupBuilder
• AntBuilder
• Using the ConfigSlurper

9. Grails Installation and Overview

• Installing Grails
• GRAILS_HOME variable
• Updating PATH
• Technologies included with Grails
• Spring
• Hibernate
• Site Mesh
• AJAX libraries
• Jetty/Tomcat
• Main components of a Grails application
• Domain
• Controller
• View
• Configurations

10. Creating a simple Grails application

• The create-app command
• Configuring the application
• Create a Domain
• Getting started with the Grails scaffolding
• Generate views and a controller with create-all
• Create a basic Controller
• Running the application
• Unit Tests

11. The Domain

• Modeling relationships – belongsTo, mapping, and hasMany
• One-to-one
• One-to-many
• Many-to-Many
• Validators – constraints
• GORM
• Using the dynamic finder methods
• Criteria objects
• HQL

12. Domain Queries

• Using the dynamic finder methods
• Criteria objects
• HQL

13. Controllers

• Navigation
• Returning data to the view
• Calling a controller method from the view
• Scopes
• Request
• Flash
• Session
• Servlet Context
• Working with redirects
• Creating and using services
• Binding properties to domain objects
• Command objects

14. GSP basics

• How GSPs work
• Common GSP tag libraries
• Custom error messages
• Rendering and processing forms
• Writing custom tag libraries
• Working with layouts

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