R/jTryCatch.R

In XLConnect: Excel Connector for R

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#
# XLConnect
# Copyright (C) 2010-2021 Mirai Solutions GmbH
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
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# GNU General Public License for more details.
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#
# Wrapper to tryCatch for standard Java exception handling
# 
# Author: Martin Studer, Mirai Solutions GmbH
#
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jTryCatch <- function(...) {
	tryCatch(..., Throwable = 
		function(e) {
			if(!is.jnull(e$jobj)) {
				sw <- new(J("java.io.StringWriter"))
				pw <- new(J("java.io.PrintWriter"), sw)
				e$jobj$printStackTrace(pw)
				options("java.stacktrace"=sw$toString())
				stop(paste(class(e)[1], e$jobj$getMessage(), sep = " (Java): "),
					call. = FALSE)
			} else 
				stop("Undefined error occurred!")
		}
	)
}