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TOTD #75: Getting Started with Grails using GlassFish v3 Embedded

For a change, this blog entry is talking about something that exists for a while now :)

Basically, I wanted to setup a demo environment for Grails and GlassFish v3 Prelude on my machine and so decided to dcument the steps along the process. More detailed steps with explanation are available on GlassFish/Grails Getting Started Wiki.

1. Download and unzip GlassFish v3 Prelude.
2. Run GlassFish Update Center to install the Grails module as shown:
   
   

   ~/demos/glassfishv3-prelude >./bin/updatetool The software needed for this command (updatetool) is not installed. If you choose to install Update Tool, your system will be automatically configured to periodically check for software updates. If you would like to configure the tool to not check for updates, you can override the default behavior via the tool's Preferences facility. When this tool interacts with package repositories, some system information such as your system's IP address and operating system type and version is sent to the repository server. For more information please see: http://wiki.updatecenter.java.net/Wiki.jsp?page=UsageMetricsUC2 Once installation is complete you may re-run this command. Would you like to install Update Tool now (y/n): y Install image: /Users/arungupta/demos/glassfishv3-prelude/bin/.. Installing pkg packages. Installing: [pkg:/pkg@1.0.7,0-15.1269:20081008T212532Z, pkg:/python2.4-minimal@2.4.5.0,0-15.1269:20081008T212544Z] Installing updatetool packages. Installing: [pkg:/updatetool@2.0.0,0-15.1269:20081008T212613Z, pkg:/wxpython2.8-minimal@2.8.8,0-15.1269:20081008T212630Z] Registering notifier: Already registered. Initialization complete. Software successfully installed. You may now re-run this command (updatetool).

3. Now run the Update Center again to see a screen as shown below:
   
   

Select "GlassFish support for Grails Framework" and click on "Install" to install the module locally. This creates a new directory "grails" in your GlassFish v3 Prelude directory and install Grails 1.0.4 there.

4. Set environment variables as:
   
   

   ~/demos/glassfishv3-prelude/glassfish/grails >export GRAILS_HOME=~/demos/glassfishv3-prelude/glassfish/grails ~/demos/glassfishv3-prelude/glassfish/grails >export PATH=$GRAILS_HOME/bin:$PATH

   
   
5. Create a template application as:
   
   

   ~/demos/glassfishv3-prelude/glassfish/grails/samples >grails create-app bookstore Welcome to Grails 1.0.4 - http://grails.org/ Licensed under Apache Standard License 2.0 Grails home is set to: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails Base Directory: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples Note: No plugin scripts found Running script /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/scripts/CreateApp.groovy Environment set to development     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/src     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/src/java     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/src/groovy     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/grails-app     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/grails-app/controllers     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/grails-app/services     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/grails-app/domain     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/grails-app/taglib     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/grails-app/utils     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/grails-app/views     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/grails-app/views/layouts     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/grails-app/i18n     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/grails-app/conf     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/test     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/test/unit     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/test/integration     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/scripts     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/web-app     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/web-app/js     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/web-app/css     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/web-app/images     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/web-app/META-INF     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/lib     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/grails-app/conf/spring     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/grails-app/conf/hibernate [propertyfile] Creating new property file: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/application.properties      [copy] Copying 2 files to /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore      [copy] Copied 1 empty directory to 1 empty directory under /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore      [copy] Copying 2 files to /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/web-app/WEB-INF      [copy] Copying 5 files to /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/web-app/WEB-INF/tld      [copy] Copying 28 files to /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/web-app      [copy] Copying 18 files to /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/grails-app      [copy] Copying 1 file to /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore      [copy] Copying 1 file to /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore      [copy] Copying 1 file to /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore      [copy] Copying 1 file to /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore [propertyfile] Updating property file: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/application.properties Created Grails Application at /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore

   
   
6. Create a domain specific class as:
   
   

   ~/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore >grails create-domain-class book Welcome to Grails 1.0.4 - http://grails.org/ Licensed under Apache Standard License 2.0 Grails home is set to: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails Base Directory: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore Note: No plugin scripts found Running script /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/scripts/CreateDomainClass.groovy Environment set to development      [copy] Copying 1 file to /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/grails-app/domain Created Domain Class for Book      [copy] Copying 1 file to /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/test/integration Created Tests for Book

   
   
7. Add attributes to the domain class by editing "grails-app/domain/Book.groovy" such that it looks like:
   
   

   class Book {   String title   String author }

   
   
8. Create a new controller as:
   
   

   ~/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore >grails create-controller Book Welcome to Grails 1.0.4 - http://grails.org/ Licensed under Apache Standard License 2.0 Grails home is set to: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails Base Directory: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore Note: No plugin scripts found Running script /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/scripts/CreateController.groovy Environment set to development      [copy] Copying 1 file to /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/grails-app/controllers Created Controller for Book     [mkdir] Created dir: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/grails-app/views/book      [copy] Copying 1 file to /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/test/integration Created ControllerTests for Book

9. Edit the generated controller in "grails-app/controller/BookController.groovy" to specify scaffold for the domain class. It looks like:
   
   

   class BookController {     def scaffold = Book }

10. Run the app as shown below:
    
    

    ~/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore >grails run-app Welcome to Grails 1.0.4 - http://grails.org/ Licensed under Apache Standard License 2.0 Grails home is set to: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails Base Directory: /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore Note: No plugin scripts found Running script /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/scripts/RunApp.groovy Environment set to development Starting GlassFish embedded server...    [mkdir] Created dir: /Users/arungupta/.grails/1.0.4/projects/bookstore/classes   [groovyc] Compiling 8 source files to /Users/arungupta/.grails/1.0.4/projects/bookstore/classes     [mkdir] Created dir: /Users/arungupta/.grails/1.0.4/projects/bookstore/resources/grails-app/i18n [native2ascii] Converting 11 files from /Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/grails-app/i18n to /Users/arungupta/.grails/1.0.4/projects/bookstore/resources/grails-app/i18n      [copy] Copying 1 file to /Users/arungupta/.grails/1.0.4/projects/bookstore/classes      [copy] Copying 1 file to /Users/arungupta/.grails/1.0.4/projects/bookstore/resources      [copy] Copying 1 file to /Users/arungupta/.grails/1.0.4/projects/bookstore Running Grails application.. Application name : bookstore Web App Root :/Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/web-app web.xml:/Users/arungupta/.grails/1.0.4/projects/bookstore/resources/web.xml Mar 18, 2009 10:19:09 PM CommonClassLoaderManager Skipping creation of CommonClassLoader as there are no libraries available INFO: urls = [] no resource bundle found for version, using default GlassFish version Mar 18, 2009 10:19:09 PM AppServerStartup run INFO: [Thread[GlassFish Kernel Main Thread,5,main]] started Mar 18, 2009 10:19:09 PM com.sun.enterprise.v3.services.impl.GrizzlyProxy start INFO: Listening on port 8080 Mar 18, 2009 10:19:10 PM org.glassfish.admin.mbeanserver.ConnectorStartupService$ConnectorsStarterThread startConnector INFO: Started JMXConnector, JMXService URL = service:jmx:rmi:///jndi/rmi://192.168.1.145:8686/jmxrmi Mar 18, 2009 10:19:10 PM com.sun.enterprise.v3.admin.adapter.AdminEndpointDecider setGuiContextRoot INFO: Admin Console Adapter: context root: /admin Mar 18, 2009 10:19:10 PM com.sun.enterprise.v3.server.AppServerStartup run INFO: GlassFish v3 Prelude startup time : Embedded(418ms) startup services(887ms) total(1305ms) Mar 18, 2009 10:19:10 PM com.sun.enterprise.web.WebContainer createHttpListener INFO: Created HTTP listener http-listener-1 on port 8080 Mar 18, 2009 10:19:10 PM com.sun.enterprise.web.WebContainer createHosts INFO: Created virtual server server Mar 18, 2009 10:19:11 PM org.apache.catalina.loader.WebappLoader setClassPath INFO: Unknown loader org.glassfish.grails.MaskingClassLoader@3b948e75 class org.glassfish.grails.MaskingClassLoader Mar 18, 2009 10:19:12 PM org.apache.catalina.loader.WebappLoader setClassPath INFO: Unknown loader org.glassfish.internal.api.DelegatingClassLoader@191fa2af class org.glassfish.internal.api.DelegatingClassLoader Mar 18, 2009 10:19:12 PM org.apache.catalina.core.ApplicationContext log INFO: PWC1412: WebModule[/bookstore] ServletContext.log():Set web app root system property: 'bookstore-development-0.1' = [/Users/arungupta/demos/glassfishv3-prelude/glassfish/grails/samples/bookstore/web-app/] Mar 18, 2009 10:19:12 PM org.apache.catalina.core.ApplicationContext log INFO: PWC1412: WebModule[/bookstore] ServletContext.log():Initializing log4j from [file:/Users/arungupta/.grails/1.0.4/projects/bookstore/resources/log4j.properties] Mar 18, 2009 10:19:12 PM org.apache.catalina.core.ApplicationContext log INFO: PWC1412: WebModule[/bookstore] ServletContext.log():Initializing Spring root WebApplicationContext [0] spring.GrailsWebApplicationContext Refreshing org.codehaus.groovy.grails.commons.spring.GrailsWebApplicationContext@430b4506: display name [org.codehaus.groovy.grails.commons.spring.GrailsWebApplicationContext@430b4506]; startup date [Wed Mar 18 22:19:14 PDT 2009]; parent: org.springframework.web.context.support.XmlWebApplicationContext@6ceb51a8 [0] spring.GrailsWebApplicationContext Bean factory for application context [org.codehaus.groovy.grails.commons.spring.GrailsWebApplicationContext@430b4506]: org.springframework.beans.factory.support.DefaultListableBeanFactory@1f43243e Mar 18, 2009 10:19:17 PM org.apache.catalina.core.ApplicationContext log INFO: PWC1412: WebModule[/bookstore] ServletContext.log():Initializing Spring FrameworkServlet 'grails' Mar 18, 2009 10:19:17 PM com.sun.enterprise.web.WebApplication start INFO: Loading application bookstore at /bookstore Server running. Browse to http://localhost:8080/bookstore

    
    Notice, here GlassFish v3 Embedded Server is used for running the application. It is now accessible at "http://localhost:8080/bookstore" and looks like:
    
    
    
    
11. Clicking on the "BookController" shows:
    
    
    
12. Click on "New Book" to add a new book as:
    
    
13. Each entry can be updated/deleted after clicking on "Create" ...
    
    
    
    or "Book List" as shown below:
    
    
    
    

Posted by Arun Gupta in web2.0  |  Comments[1]

TOTD #31: CRUD Application using Grails - Hosted on GlassFish and MySQL

TOTD #30 explained how to create CRUD application using Grails and hosted using in-built Jetty servlet engine and in-memory HSQLDB database. Jetty and HSQLDB are built into Grails and allows to start easily. You can also use GlassFish and MySQL for deploying your applications in production environment.

This blog entry walks you through the steps of deploying a Grails application on GlassFish and MySQL.

1. If MySQL is already installed, then download GlassFish v2 UR1. Otherwise you can also Download GlassFish v2 UR1 and MySQL co-bundle from usual Download Page (instructions).
2. Configure MySQL database
1. Download MySQL Connector/J 5.1.6 from here.
2. Extract the bundle and copy "mysql-connector-java-5.1.6-bin.jar" to the "lib" directory of Grails application.
3. Start MySQL database as:
   
   

   ~/testbed/grails-1.0.2/samples/crud >sudo /usr/local/mysql/bin/mysqld_safe --user root --console Starting mysqld daemon with databases from /usr/local/mysql/data

4. Create database by giving the following command:
   
   

   ~/testbed/grails-1.0.2/samples/crud >/usr/local/mysql/bin/mysqladmin create crudProd --user root

3. Configure the Application
1. Edit "grails-app/conf/DataSource.groovy" to specify MySQL configuration. The updated file looks like (changes highlighted in bold):
   
   

   dataSource {         pooled = false         driverClassName = "com.mysql.jdbc.Driver"         username = "root"         password = ""         dialect = "org.hibernate.dialect.MySQL5InnoDBDialect" } hibernate {     cache.use_second_level_cache=true     cache.use_query_cache=true     cache.provider_class='org.hibernate.cache.EhCacheProvider' } // environment specific settings environments {         development {                 dataSource {                         dbCreate = "create-drop" // one of 'create', 'create-drop','update'                         url = "jdbc:hsqldb:mem:devDB"                 }         }         test {                 dataSource {                         dbCreate = "update"                         url = "jdbc:hsqldb:mem:testDb"                 }         }         production {                 dataSource {                         dbCreate = "update"                         url = "jdbc:mysql://localhost/crudProd"                 }         } }


Being in production, it's recommended to use InnoDB tables instead of MyISAM tables. This can be easily specified by using the dialect as explained here. More details about the contents of "DataSource.groovy" can be found here.

2. Create a WAR by giving the following command:
   
   

   ~/testbed/grails-1.0.2/samples/crud >grails war Welcome to Grails 1.0.2 - http://grails.org/ Licensed under Apache Standard License 2.0 Grails home is set to: /Users/arungupta/testbed/grails-1.0.2 Base Directory: /Users/arungupta/testbed/grails-1.0.2/samples/crud Note: No plugin scripts found Running script /Users/arungupta/testbed/grails-1.0.2/scripts/War.groovy Environment set to production    [delete] Deleting: /Users/arungupta/.grails/1.0.2/projects/crud/resources/web.xml    [delete] Deleting directory /Users/arungupta/.grails/1.0.2/projects/crud/classes . . . [propertyfile] Updating property file: /Users/arungupta/testbed/grails-1.0.2/samples/crud/staging/WEB-INF/classes/application.properties     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/staging/WEB-INF/plugins      [copy] Warning: /Users/arungupta/testbed/grails-1.0.2/samples/crud/plugins not found.       [jar] Building jar: /Users/arungupta/testbed/grails-1.0.2/samples/crud/crud-0.1.war    [delete] Deleting directory /Users/arungupta/testbed/grails-1.0.2/samples/crud/staging Done creating WAR /Users/arungupta/testbed/grails-1.0.2/samples/crud/crud-0.1.war

4. Deploy the WAR file as:
   
   

   ~/testbed/grails-1.0.2/samples/crud >~/testbed/glassfish/v3/p2b9/glassfish/bin/asadmin deploy crud-0.1.war crud-0.1 deployed successfully Command deploy executed successfully.

   
   The application is now accessible at "http://localhost:8080/crud-0.1" and looks like:
   
   
   
5. READ - Click on "StateController" and the following page is shown:
   
   
6. CREATE - Click on "New State" and enter the values as shown below:
   
   
   
   and click on "Create" to see the following page:
   
   
7. UPDATE & DELETE - You can click on "Edit" or "Delete" to perform U or D of CRUD or click on "State List" to view the updated list.

Please leave suggestions on other TOTD that you'd like to see. A complete archive is available here.

Posted by Arun Gupta in web2.0  |  Comments[4]

TOTD #30: CRUD Application using Grails - Hosted on Jetty and HSQLDB

After a simple Grails application, let's create a CRUD application. Such an application allows to perform basic database operations to read table rows from the database, create new rows, and edit and delete existing rows. This blog shows how such an application can be created using Grails, hosted on built-in Jetty servlet engine and use in-memory HSQLDB database for persistence.

A follow-up entry will show how this application can be deployed in production mode on GlassFish and using MySQL database.

1. Create a Grails application
1. After Grails download and configuration, create a new application "crud" as:
   
   

   ~/testbed/grails-1.0.2/samples >grails create-app crud Welcome to Grails 1.0.2 - http://grails.org/ Licensed under Apache Standard License 2.0 Grails home is set to: /Users/arungupta/testbed/grails-1.0.2 Base Directory: /Users/arungupta/testbed/grails-1.0.2/samples Note: No plugin scripts found Running script /Users/arungupta/testbed/grails-1.0.2/scripts/CreateApp.groovy Environment set to development     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/src     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/src/java     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/src/groovy     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/grails-app     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/grails-app/controllers     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/grails-app/services     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/grails-app/domain     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/grails-app/taglib     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/grails-app/utils     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/grails-app/views     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/grails-app/views/layouts     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/grails-app/i18n     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/grails-app/conf     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/test     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/test/unit     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/test/integration     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/scripts     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/web-app     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/web-app/js     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/web-app/css     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/web-app/images     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/web-app/META-INF     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/lib     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/grails-app/conf/spring     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/grails-app/conf/hibernate [propertyfile] Creating new property file: /Users/arungupta/testbed/grails-1.0.2/samples/crud/application.properties      [copy] Copying 2 files to /Users/arungupta/testbed/grails-1.0.2/samples/crud      [copy] Copying 2 files to /Users/arungupta/testbed/grails-1.0.2/samples/crud/web-app/WEB-INF      [copy] Copying 5 files to /Users/arungupta/testbed/grails-1.0.2/samples/crud/web-app/WEB-INF/tld      [copy] Copying 87 files to /Users/arungupta/testbed/grails-1.0.2/samples/crud/web-app      [copy] Copying 17 files to /Users/arungupta/testbed/grails-1.0.2/samples/crud/grails-app      [copy] Copying 1 file to /Users/arungupta/testbed/grails-1.0.2/samples/crud      [copy] Copying 1 file to /Users/arungupta/testbed/grails-1.0.2/samples/crud      [copy] Copying 1 file to /Users/arungupta/testbed/grails-1.0.2/samples/crud [propertyfile] Updating property file: /Users/arungupta/testbed/grails-1.0.2/samples/crud/application.properties Created Grails Application at /Users/arungupta/testbed/grails-1.0.2/samples/crud

2. In your project directory, create a domain class as:
   
   

   ~/testbed/grails-1.0.2/samples/crud >grails create-domain-class state Welcome to Grails 1.0.2 - http://grails.org/ Licensed under Apache Standard License 2.0 Grails home is set to: /Users/arungupta/testbed/grails-1.0.2 Base Directory: /Users/arungupta/testbed/grails-1.0.2/samples/crud Note: No plugin scripts found Running script /Users/arungupta/testbed/grails-1.0.2/scripts/CreateDomainClass.groovy Environment set to development      [copy] Copying 1 file to /Users/arungupta/testbed/grails-1.0.2/samples/crud/grails-app/domain Created  for State      [copy] Copying 1 file to /Users/arungupta/testbed/grails-1.0.2/samples/crud/test/integration Created Tests for State

   
   This creates "State.groovy" class in "grails-app/domain" directory and looks like:
   
   

   class State { }

   
   Add two fields to store state name and the corresponding abbreviation as shown below:
   
   

   class State {         String name         String abbrev }

3. Change "grails-app/conf/BootStrap.groovy" class to initialize the domain with sample data as shown below:
   
   

   class BootStrap {      def init = { servletContext ->           new State(name:"California", abbrev:"CA").save()           new State(name:"New York", abbrev:"NY").save()           new State(name:"Texas", abbrev:"TX").save()           new State(name:"Wisconsin", abbrev:"WI").save()      }      def destroy = {      } }

4. Create a new controller as:
   
   

   ~/testbed/grails-1.0.2/samples/crud >grails create-controller state Welcome to Grails 1.0.2 - http://grails.org/ Licensed under Apache Standard License 2.0 Grails home is set to: /Users/arungupta/testbed/grails-1.0.2 Base Directory: /Users/arungupta/testbed/grails-1.0.2/samples/crud Note: No plugin scripts found Running script /Users/arungupta/testbed/grails-1.0.2/scripts/CreateController.groovy Environment set to development      [copy] Copying 1 file to /Users/arungupta/testbed/grails-1.0.2/samples/crud/grails-app/controllers Created Controller for State     [mkdir] Created dir: /Users/arungupta/testbed/grails-1.0.2/samples/crud/grails-app/views/state      [copy] Copying 1 file to /Users/arungupta/testbed/grails-1.0.2/samples/crud/test/integration Created ControllerTests for State

   
   This generates "grails-app/controllers/StateController.groovy" with the following content:
   
   

   class StateController {     def index = { } }

   
   Replace it with to define a scaffold:
   
   

   class StateController {     def scaffold = State }

2. Start the application using built-in Jetty Servlet engine and in-memory HSQLDB database as shown below:
   
   

   ~/testbed/grails-1.0.2/samples/crud >grails run-app Welcome to Grails 1.0.2 - http://grails.org/ Licensed under Apache Standard License 2.0 Grails home is set to: /Users/arungupta/testbed/grails-1.0.2 Base Directory: /Users/arungupta/testbed/grails-1.0.2/samples/crud Note: No plugin scripts found Running script /Users/arungupta/testbed/grails-1.0.2/scripts/RunApp.groovy Environment set to development Running Grails application.. 2008-04-18 17:26:29.962::INFO:  Logging to STDERR via org.mortbay.log.StdErrLog 2008-04-18 17:26:29.075::INFO:  jetty-6.1.4 2008-04-18 17:26:29.155::INFO:  No Transaction manager found - if your webapp requires one, please configure one. 2008-04-18 17:26:30.886:/crud:INFO:  Set web app root system property: 'crud' = [/Users/arungupta/testbed/grails-1.0.2/samples/crud/web-app/] 2008-04-18 17:26:30.886:/crud:INFO:  Initializing Log4J from [file:/Users/arungupta/.grails/1.0.2/projects/crud/resources/log4j.properties] 2008-04-18 17:26:30.945:/crud:INFO:  Initializing Spring root WebApplicationContext [0] spring.GrailsWebApplicationContext Refreshing org.codehaus.groovy.grails.commons.spring.GrailsWebApplicationContext@848dfb: display name [org.codehaus.groovy.grails.commons.spring.GrailsWebApplicationContext@848dfb]; startup date [Fri Apr 18 17:26:32 PDT 2008]; parent: org.springframework.web.context.support.XmlWebApplicationContext@cddcc3 [1] spring.GrailsWebApplicationContext Bean factory for application context [org.codehaus.groovy.grails.commons.spring.GrailsWebApplicationContext@848dfb]: org.springframework.beans.factory.support.DefaultListableBeanFactory@11f136 2008-04-18 17:26:34.655:/crud:INFO:  Initializing Spring FrameworkServlet 'grails' 2008-04-18 17:26:35.716::INFO:  Started SelectChannelConnector@0.0.0.0:8080 Server running. Browse to http://localhost:8080/crud

   
   The application is now accessible at "http://localhost:8080/crud" and looks like:
   
   
   
   
3. READ - Click on "StateController" and the following page is shown:
   
   
   
   
4. CREATE - Click on "New State" and enter the values as shown below:
   
   
   
   and click on "Create" to see the following page:
   
   
   
   
5. UPDATE & DELETE - You can click on "Edit" or "Delete" to perform U or D of CRUD or click on "State List" to view the updated list as shown below:
   
   

Please leave suggestions on other TOTD that you'd like to see. A complete archive is available here.

Posted by Arun Gupta in web2.0  |  Comments[6]