testing off heap interfaces with String[]

Conflicts:
	src/test/java/net/openhft/chronicle/map/CHMUseCasesTest.java

src/main/java/net/openhft/xstream/converters/DataValueConverter.java

@@ -103,7 +103,18 @@ public class DataValueConverter implements Converter {
 
                         final String fieldName = "_" + fileModel.name();
 
-                        Field field = o.getClass().getDeclaredField(fieldName);
+                        Field field;
+
+                        try {
+                            field = o.getClass().getDeclaredField(fieldName);
+                        } catch (NoSuchFieldException e1) {
+
+                            throw new ConversionException("JSON conversion of Classes containing " +
+                                    "arrays is not " +
+                                    "currently supported" +
+                                    ", the following field could not be found=" + fileModel.name(), e1);
+                        }
+
                         field.setAccessible(true);
 
                         final Object[] o1 = (Object[]) field.get(o);
@@ -122,8 +133,8 @@ public class DataValueConverter implements Converter {
                         }
                         writer.endNode();
 
-                    } catch (NoSuchFieldException | IllegalAccessException e1) {
-                        throw new ConversionException("", e1);
+                    } catch (IllegalAccessException e) {
+                        throw new ConversionException("", e);
                     }
 
                     continue;

src/test/java/net/openhft/chronicle/map/CHMUseCasesTest.java

@@ -354,6 +354,56 @@ public class CHMUseCasesTest {
     }
 
 
+
+    interface I1 {
+        String getStrAt( @MaxSize(10) int i);
+        void setStrAt(@MaxSize(10) int i, @MaxSize(10) String str);
+    }
+
+    @Test
+    public void testArrayOfString() throws ExecutionException, InterruptedException,
+            IOException {
+
+        ChronicleMapBuilder<CharSequence, I1> builder = ChronicleMapBuilder
+                .of(CharSequence.class, I1.class)
+                .entries(10);
+
+        try (ChronicleMap<CharSequence, I1> map = newInstance(builder)) {
+
+            {
+                final I1 i1 = map.newValueInstance();
+                i1.setStrAt(1, "Hello");
+                i1.setStrAt(2, "World");
+                map.put("Key1", i1);
+            }
+
+            {
+                final I1 i1 = map.newValueInstance();
+                i1.setStrAt(1, "Hello2");
+                i1.setStrAt(2, "World2");
+                map.put("Key2", i1);
+            }
+
+            {
+                final I1 key = map.get("Key1");
+
+                assertEquals("Hello", key.getStrAt(1));
+                assertEquals("World", key.getStrAt(2));
+            }
+
+            {
+                final I1 key = map.get("Key2");
+
+                assertEquals("Hello2", key.getStrAt(1));
+                assertEquals("World2", key.getStrAt(2));
+            }
+
+            // todo not currently supported for arrays
+            // mapChecks();
+        }
+    }
+
+
     @Test
     public void testCharArrayValue() throws ExecutionException, InterruptedException, IOException {
 
@@ -469,6 +519,9 @@ public class CHMUseCasesTest {
     }
 
 
+
+
+
     @Test
     public void testKeyValueSizeBySample() throws ExecutionException, InterruptedException,
             IOException {