improved makeAccessible usage in framework

Author: raydac

src/main/java/com/igormaznitsa/jbbp/io/AbstractMappedClassFieldObserver.java

@@ -109,7 +109,9 @@ protected void processObject(final Object obj, final Field field, final Object c
         final Class<?> clazzToProcess = listOfClassHierarchy.get(i);
         final Bin clazzAnno = clazzToProcess.getAnnotation(Bin.class);
         for (final Field f : clazzToProcess.getDeclaredFields()) {
-          JBBPUtils.makeAccessible(f);
+          if (!f.isAccessible()){
+            JBBPUtils.makeAccessible(f);
+          }
           final int modifiers = f.getModifiers();
           if (Modifier.isTransient(modifiers) || Modifier.isStatic(modifiers) || f.getName().indexOf('$') >= 0) {
             continue;
@@ -136,8 +138,8 @@ protected void processObject(final Object obj, final Field field, final Object c
       }
     }
 
-    if (field!=null){
-      field.setAccessible(true);
+    if (field!=null && !field.isAccessible()){
+      JBBPUtils.makeAccessible(field);
     }
 
     final Bin clazzAnno = obj.getClass().getAnnotation(Bin.class);

src/main/java/com/igormaznitsa/jbbp/mapper/JBBPMapper.java

@@ -269,7 +269,9 @@ public static Object map(final JBBPFieldStruct rootStructure, final Object mappi
           continue;
         }
 
-        JBBPUtils.makeAccessible(mappingField);
+        if (!mappingField.isAccessible()){
+          JBBPUtils.makeAccessible(mappingField);
+        }
 
         final Bin fieldAnno = mappingField.getAnnotation(Bin.class);
         final Bin mappedAnno;

src/main/java/com/igormaznitsa/jbbp/utils/JBBPTextWriterExtraAdapter.java

@@ -74,7 +74,9 @@ public void onReachedMaxValueNumberForLine(final JBBPTextWriter context) throws
   public Object extractFieldValue(final Object instance, final Field field) {
     JBBPUtils.assertNotNull(field, "Field must not be null");
     try {
-      JBBPUtils.makeAccessible(field);
+      if (!field.isAccessible()){
+        JBBPUtils.makeAccessible(field);
+      }
       return field.get(instance);
     }
     catch (Exception ex) {