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From 2b813829d02b89206493520eb86075a43b145db9 Mon Sep 17 00:00:00 2001
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From: Roman Vais <rvais@redhat.com>
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Date: Tue, 13 Jun 2017 13:24:24 +0200
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Subject: [PATCH] ParseValues-NullPointerException-patch
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---
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 .../java/com/beust/jcommander/Parameterized.java   | 27 ++++++++++++++++++++--
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 1 file changed, 25 insertions(+), 2 deletions(-)
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diff --git a/src/main/java/com/beust/jcommander/Parameterized.java b/src/main/java/com/beust/jcommander/Parameterized.java
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index 3264008..e937a66 100644
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--- a/src/main/java/com/beust/jcommander/Parameterized.java
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+++ b/src/main/java/com/beust/jcommander/Parameterized.java
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@@ -13,6 +13,8 @@ import java.lang.reflect.Type;
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 import java.util.Collections;
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 import java.util.List;
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 import java.util.Set;
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+import java.util.logging.Level;
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+import java.util.logging.Logger;
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 /**
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  * Encapsulate a field or a method annotated with @Parameter or @DynamicParameter
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@@ -180,12 +182,33 @@ public class Parameterized {
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       String fieldName = Character.toLowerCase(name.charAt(3)) + name.substring(4);
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       Object result = null;
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       try {
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-        Field field = method.getDeclaringClass().getDeclaredField(fieldName);
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+        Field field = object.getClass().getDeclaredField(fieldName);
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         if (field != null) {
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           setFieldAccessible(field);
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           result = field.get(object);
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         }
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-      } catch(NoSuchFieldException | IllegalAccessException ex) {
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+      } catch(NoSuchFieldException ex) {
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+        Class clazz = object.getClass();
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+        Field found = null;
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+        while (clazz != null && method.getDeclaringClass().isAssignableFrom(clazz)) {
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+          try {
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+            found = clazz.getDeclaredField(fieldName);
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+          } catch (NoSuchFieldException nfex) {
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+            // ignore
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+          }
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+          if (found != null) break;
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+          clazz = clazz.getSuperclass();
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+        }
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+        if (found != null) {
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+          setFieldAccessible(found);
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+          try {
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+            result = found.get(object);
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+          } catch (IllegalAccessException iex) {
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+            // ignore
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+          }
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+        }
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+
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+      } catch(IllegalAccessException ex) {
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         // ignore
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       }
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       return result;
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-- 
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2.7.4
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