Object cloner — clone • rJava

Generic function to clone objects

Usage

clone(x, ...)

Methods

clone: signature(x = "jobjRef"): clone a java object reference (must implement Cloneable)
clone: signature(x = "jarrayRef"): clone a java rugged array (not yet implemented)
clone: signature(x = "jrectRef"): clone a java rectangular array (not yet implemented)

Arguments

x: An object to clone
...: Further arguments, ignored

Value

A clone of the object

Warning

The implementation of clone for java object references uses the clone method of the Object class. The reading of its description in the java help page is strongly recommended.

Examples

#> Error in .jcheck(): java.lang.NoClassDefFoundError: RJavaArrayTools.jcall("java/lang/System", "S", "getProperty", "java.class.path")new("jobjRef", jobj = <pointer: 0x590bf6a99902>, jclass = "java/lang/NoClassDefFoundError")

  p1 <- .jnew("java/awt/Point" )
  p2 <- clone( p1 )
#> Error in .jcall("RJavaArrayTools", "Ljava/lang/Object;", "cloneObject",     .jcast(x)): RcallMethod: cannot determine object class
  p2$move( 10L, 10L )
#> Error: object 'p2' not found
  p1$getX() 
#> Error in .jcheck(): java.lang.NoClassDefFoundError: RJavaArrayTools.jcall("RJavaTools", "Z", "hasField", .jcast(x, "java/lang/Object"), name)new("jobjRef", jobj = <pointer: 0x590bf6a99912>, jclass = "java/lang/NoClassDefFoundError")

  # check that p1 and p2 are not references to the same java object
  stopifnot( p1$getX() == 0 )
#> Error in .jcall("RJavaTools", "Z", "hasField", .jcast(x, "java/lang/Object"),     name): RcallMethod: cannot determine object class
  stopifnot( p2$getX() == 10 )
#> Error: object 'p2' not found