interfaceGenerator: Generates a template "closure" to represent a Java...
In SJava: The Omegahat interface for R and Java

Description Usage Arguments Details Value Author(s) References See Also Examples

To use an R variable as a Java object, one can create a closure or list of functions that implement the methods of that Java class. The template of such a closure can be generated automatically using the reflectance capabilities of both Java and R. This function generates such a template and can be used as an initial step in implementing an R version of a Java class.

1	interfaceGenerator(name, file="")

`name`	the name of the Java class or interface whose methods are to be duplicated locally via R functions. This is resolved using the usual Omegahat rules so this can be a partially qualified class name.
`file`	The name of a file to which the template functions are written. This can then be edited to provide an implementation of the Java class via an R object.

This is useful for allowing an R object to be converted to a proxy Java object. For example, consider using an R object as a callback for a Swing button. The object must implement the actionPerformed() method of the ActionListener. This function calls the Omegahat evaluator's getMethods() method to retrieve a list of Java method descriptions and then converts them to an R closure definition.

This function has the side-effect of writing the definition of a function closure definition to standard output (the console) or to a file. In the future, we will generate the actual function objects. The idea is merely to show the possibilities available to us using reflectance.

Duncan Temple Lang

http://www.omegahat.org/RSJava

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