For example, I'm running into developers and architects who are scared to death of Rails apps, but love the idea of writing new Grails apps. From what I've seen, there is a LOT of resource overhead that goes into using the JVM to support languages such as Groovy, JRuby and Jython instead of straight Ruby or Python. Ruby and Python ca...
I like how Groovy makes all of your instance variables and class variables public and writes getters and setters on your behalf. This saves a lot of unnecessary coding. On the other hand, my boss hates it, making me very sad :( Is there a way to achieve the conciseness of Groovy in Java without having to use Groovy or some other framewo...
I've gotten used to blocks in Ruby and would like to use them in Java. Groovy seems to offer a similar feature but I don't know enough about Groovy to understand whether there are any significant differences in syntax and functionality. Is a Ruby block equivalent to a Groovy block? ...
Basically I can't even import Groovy classes in a regular GWT EntryPoint: import com.google.gwt.core.client.EntryPoint; // OK import groovy.lang.Binding; // NOT OK import groovy.util.GroovyScriptEngine; // NOT OK Intellij 8.0's inspector keeps telling me this: Class 'groovy.lang.Binding' is not present in JRE Emulation Library so it...
I have the following java class: package domain; //imports @Entity public class User { @Id @GeneratedValue private long id; private String name; private String password; private String mail; //Getters, Setters and Constructors } When I change the file extension to .groovy, the application stops working. In ...
Hi! I am a newbie at Groovy and I want to modify one example I've found at the Internet (the blog one). I've defined two classes Post and Comment as follows: class Post { static hasMany = [comments:Comment] String title String teaser String content Date lastUpdated SortedSet comments static constraints = { title(nullable...
Hello, I have the following Groovy+SwingBuilder code. In one panel I generate checkboxes and in another panel I want to access the values of the checkboxes. The code looks basically likes this: def optionsmap = [ foo : "value_foo", bar : "value_bar"] SwingBuilder.build() { frame(title:'demo1',...
Hi guys! I upgraded my Grails 1.0.4 application to 1.1. I also upgraded from acegi 0.4.1 to 0.5.1! I had some problems but i'm working on it and i think this is my last problem. When i start my grails application i get the following error message: loading security config ... ...
How do I provide arguments containing spaces to the execute method of strings in groovy? Just adding spaces like one would in a shell does not help: println 'ls "/tmp/folder with spaces"'.execute().text This would give three broken arguments to the ls call. ...
Hi, I've developed a Class that has some methods that augment Integer, it mainly lets me do this: def total = 100.dollars + 50.euros Now I have to extend Integer.metaClass doing something like this: Integer.metaClass.getDollars = {-> Money.Dollar(delegate) } I tried putting that at the bottom of the file, before the Money class...
Hi guys, i upgraded my grails 1.0.4 + acegi 0.4.1 project to grails 1.1 with acegi 0.5.1. I'm able to start my application without errors, but when i want to login i get a "wrong username or password" message. Grails-shell output is: 2009-04-26 12:38:46,997 [403984690@qtp0-0] ERROR springsecurity.GrailsDaoImpl - User [admin] ...
We're writing a large production system in Java, and I'm considering whether or not we can write some of the components in one of the JVM-based dynamic languages. Groovy appears to be the best choice from the Java interoperability standpoint. But is the Groovy implementation reliable enough to use in production (I would assume so), and i...
I want to upload an image using a groovy on grails. My gsp page is as follows (I am showing a simplified version of the original) <g:form controller="post" action="save" enctype="multipart/form-data"> My picture <input type="file" name="myPicture" /> <g:submitButton name="submit" value="Save"/> </g:form> My dom...
Hi! I am using the help-balloons plugin I would like to use it parametrized. I mean, the messages should come from a properties file. In the documentation appears the following: <g:helpBalloon code="user.name" suffix=".help"/> In this last example, the code attribute is used to look up the balloon's title within the message bundle an...
I would like to start a simple webtest from Groovy with Canoo. The example Canoo Example is not working. I think I am missing something with the Antbuilder class. Especially the "config" part, where a HashMap of properties is passed. I have tried different ways to pass properties but my most basic approach: config_map = ['host':'www.goo...
How to build openID ReturnURL in gsp?? Define a ReturnURL This is the endpoint where your webapp will receive and process the authentication responses from the OpenID Provider. String _returnURL = "http://example.com/openid"; Reference:http://code.google.com/p/openid4java/wiki/QuickStart ...
Hi, The following example is adapted from 'Groovy in Action' class Mother { Closure birth() { def closure = { caller -> [this, caller] } return closure } } Mother julia = new Mother() closure = julia.birth() con...
There is an idiom in groovy to implement an Interface with a single closure. The closure must be prepared to handle whatever arguments are passed. That works fine. But how does one determine what method was called at the interface? interface X { void f(); void g(int n); void h(String s, int n); } x = {Object[] args -> println "method c...
I have a Java\Spring\Hibernate application - complete with domain classes which are basically Hibernate POJOs There is a piece of functionality that I think can be written well in Grails. I wish to reuse the domain classes that I have created in the main Java app What is the best way to do so ? Should I write new domain classes exten...
I have a groovy script that uses a third party library. Each time I open the application and attempt to run my script I have to import the proper library. I would like to be able to open GroovyConsole and run my application without having to import the library. ...