Preserve comporent type in ValueArray.convertPrecision()

h2/src/main/org/h2/value/ValueArray.java

@@ -225,9 +225,9 @@ public class ValueArray extends Value {
             newValues[i] = v;
         }
         if (i < length) {
-            return get(Arrays.copyOf(newValues, i));
+            return get(componentType, Arrays.copyOf(newValues, i));
         }
-        return modified ? get(newValues) : this;
+        return modified ? get(componentType, newValues) : this;
     }
 
 }

h2/src/test/org/h2/test/unit/TestValue.java

@@ -332,18 +332,24 @@ public class TestValue extends TestBase {
     }
 
     private void testArray() {
-        ValueArray src = ValueArray.get(
+        ValueArray src = ValueArray.get(String.class,
                 new Value[] {ValueString.get("1"), ValueString.get("22"), ValueString.get("333")});
         assertEquals(6, src.getPrecision());
         assertSame(src, src.convertPrecision(5, false));
         assertSame(src, src.convertPrecision(6, true));
-        ValueArray exp = ValueArray.get(
+        ValueArray exp = ValueArray.get(String.class,
                 new Value[] {ValueString.get("1"), ValueString.get("22"), ValueString.get("33")});
-        assertEquals(exp, src.convertPrecision(5, true));
-        exp = ValueArray.get(new Value[] {ValueString.get("1"), ValueString.get("22")});
-        assertEquals(exp, src.convertPrecision(3, true));
-        exp = ValueArray.get(new Value[0]);
-        assertEquals(exp, src.convertPrecision(0, true));
+        Value got = src.convertPrecision(5, true);
+        assertEquals(exp, got);
+        assertEquals(String.class, ((ValueArray) got).getComponentType());
+        exp = ValueArray.get(String.class, new Value[] {ValueString.get("1"), ValueString.get("22")});
+        got = src.convertPrecision(3, true);
+        assertEquals(exp, got);
+        assertEquals(String.class, ((ValueArray) got).getComponentType());
+        exp = ValueArray.get(String.class, new Value[0]);
+        got = src.convertPrecision(0, true);
+        assertEquals(exp, got);
+        assertEquals(String.class, ((ValueArray) got).getComponentType());
     }
 
     private void testUUID() {