NIFI-4575 Added ability to convert from a date to a timestamp within the record API.

Signed-off-by: Matthew Burgess <mattyb149@apache.org>

This closes #2255

nifi-commons/nifi-record/src/main/java/org/apache/nifi/serialization/record/util/DataTypeUtils.java

@@ -534,6 +534,10 @@ public class DataTypeUtils {
             return null;
         }
 
+        if (value instanceof java.util.Date) {
+            return new Timestamp(((java.util.Date)value).getTime());
+        }
+
         if (value instanceof Timestamp) {
             return (Timestamp) value;
         }

nifi-commons/nifi-record/src/test/java/org/apache/nifi/serialization/record/TestDataTypeUtils.java

@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.nifi.serialization.record;
+
+import org.apache.nifi.serialization.record.util.DataTypeUtils;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.sql.Timestamp;
+
+public class TestDataTypeUtils {
+    /**
+     * This is a unit test to verify conversion java Date objects to Timestamps. Support for this was
+     * required in order to help the MongoDB packages handle date/time logical types in the Record API.
+     */
+    @Test
+    public void testDateToTimestamp() {
+        java.util.Date date = new java.util.Date();
+        Timestamp ts = DataTypeUtils.toTimestamp(date, null, null);
+
+        Assert.assertNotNull(ts);
+        Assert.assertEquals("Times didn't match", ts.getTime(), date.getTime());
+
+        java.sql.Date sDate = new java.sql.Date(date.getTime());
+        ts = DataTypeUtils.toTimestamp(date, null, null);
+        Assert.assertNotNull(ts);
+        Assert.assertEquals("Times didn't match", ts.getTime(), sDate.getTime());
+    }
+}