Groovy code execution in java at runtime

Question

Is it possible to execute groovy code dynamically loaded into a java application. For example, there is a database table containing small pieces of groovy code, for example:

def test(${val_to_insert_from_java}){
    if (${val_to_insert_from_java} > 10){
        return true;
    }
    return false;
}

Where ${val_to_insert_from_java}is a placeholder for some real value that will be inserted during java code execution, for example:

String groovyFuncSource = getFromDb();
groovyFuncSource.replace(${val_to_insert_from_java}, 9);
Object result = <evaluate somehow groovyFuncSource>;

Is there any way to evaluate such a piece of groovy code? Or maybe you would advise me on a different approach on how to implement this.

Answer 1

Yes you can do it.

See link http://groovy.codehaus.org/Embedding+Groovy

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Answer 2

JavaScript Groovy. ? Rhino JavaScript JDK. , Groovy , .

Answer 3

Java 6 Java Scripting API . API Java Java.

Java Scripting .

Answer 4

Yes, you can use the Groovy script engine to evaluate Groovy source code at runtime - and, of course, the source code can be the result of replacing strings.

From what I remember, there are various ways you can achieve this, and it will have different pros and cons.

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