[JOHNZON-123] JSONP spec compliance: JsonNumber.hashcode() is not spec compliant

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.0.1, 1.1.3
• Assignee: Mark Struberg
• Reporter: Svetlin Zarev
• Created: 05/Jun/17 12:57
• Updated: 08/May/18 11:45
• Resolved: 04/May/18 19:41

Description

From the JsonNumber javadoc [1]:

Returns the hash code value for this JsonNumber object. The hash code of a JsonNumber object is defined as the hash code of its bigDecimalValue() object.

Sample application

public final class Main {
    public static void main(String[] args) {
        JsonNumber a = Json.createObjectBuilder().add("a", 1).build().getJsonNumber("a");
        JsonNumber b = Json.createObjectBuilder().add("b", 1.1).build().getJsonNumber("b");
        
        System.out.println("Hashcode equals (a): " + (a.hashCode() == a.bigDecimalValue().hashCode()));
        System.out.println("Hashcode equals (b): " + (b.hashCode() == b.bigDecimalValue().hashCode()));
    }
}

Expected output:

Hashcode equals (a): true
Hashcode equals (b): true

Actual output:

Hashcode equals (a): false
Hashcode equals (b): false

[1] http://docs.oracle.com/javaee/7/api/javax/json/JsonNumber.html#hashCode--