jreflection: Simple helper functions for Java reflection
Description
.jconstructors returns a character vector with all constructors for
a given class or object.
.jmethods returns a character vector with all methods for
a given class or object.
.jfields returns a character vector with all fileds (aka attributes) for a given class or object.
Usage
.jconstructors(o, as.obj = FALSE)
.jmethods(o, name = NULL, as.obj = FALSE)
.jfields(o, name = NULL, as.obj = FALSE)
Arguments
o
Name of a class (either notation is fine) or an object whose
class will be queried
name
Name of the method/field to look for. May contain regular
expressions except for ^$.
as.obj
if TRUE then a list of Java objects is
returned, otherwise a character vector (obtained by calling
toString() on each entry).
Value
Returns a character vector (if as.obj is FALSE) or a
list of Java objects. Each entry corresponds to the
Constructor resp. Method resp. Field object.
Details
There first two functions are intended to help with finding correct
signatures for methods and constructors. Since the low-level API in
rJava doesn't use reflection automatically, it is necessary to
provide a proper signature. That is somewhat easier using the above
methods.