NPE in JexlArithmetic when an Array-Expression containing a null is used.
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Key: JEXL-104
URL: https://issues.apache.org/jira/browse/JEXL-104
Project: Commons JEXL
Issue Type: Bug
Affects Versions: 2.0.1
Reporter: Andreas Haufler
When using the Array-Expression like [x, y, z] a NPE occurs when one of the
array elements is null.
Example:
import org.apache.commons.jexl2.Expression;
import org.apache.commons.jexl2.JexlEngine;
import org.apache.commons.jexl2.MapContext;
public class JexlArithmeticBug {
public static void main(String[] args) {
JexlEngine engine = new JexlEngine();
String jexlExp = "[null, null]";
Expression e = engine.createExpression(jexlExp);
System.out.println(e.evaluate(new MapContext()));
}
}
As one can see in the Stacktrace, JexlArithmetic.narrowArrayType doesn't expect
null values at all.
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