Instantiate a Java array with a specific element type.

R/utils.R

jarray

Description

Given a list of Java object references, instantiate an Array[T]

containing the same list of references, where T is a non-primitive type that is more specific than java.lang.Object.

Usage

jarray(sc, x, element_type) 

Arguments

Arguments Description
sc A spark_connection.
x A list of Java object references.
element_type A valid Java class name representing the generic type parameter of the Java array to be instantiated. Each element of x
must refer to a Java object that is assignable to element_type.

Examples

library(sparklyr)
sc <- spark_connect(master = "spark://HOST:PORT") 
string_arr <- jarray(sc, letters, element_type = "java.lang.String") 
# string_arr is now a reference to an array of type String[]