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## functions for some basic exception handling
# FIXME: should all these actually be deprecated or defunct
## poll for an exception
.jgetEx <- function(clear=FALSE) {
exo <- .Call(RpollException)
if (is.null(exo)) return(NULL)
x <- new("jobjRef", jobj=exo, jclass="java/lang/Throwable")
if (clear) .jclear()
x
}
## explicitly clear any pending exceptions
.jclear <- function() {
.C(RclearException)
invisible(NULL)
}
## throw an exception
.jthrow <- function(exception, message=NULL) {
if (is.character(exception))
exception <- .jnew(exception, as.character(message))
if (is(exception, "jobjRef"))
.Call(RthrowException, exception)
else
stop("Invalid exception.")
}
"$.Throwable" <- function( x, name ){
if( name %in% names(x) ){
x[[ name ]]
} else{
._jobjRef_dollar( x[["jobj"]], name )
}
}
"$<-.Throwable" <- function( x, name, value ){
if( name %in% names(x) ){
x[[ name ]] <- value
} else{
._jobjRef_dollargets( x[["jobj"]], name, value )
}
x
}
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