Simplify DateTimeType handling for JDBC

Signed-off-by: Jacob Laursen <[email protected]>

Author: jlaur

bundles/org.openhab.persistence.jdbc/src/main/java/org/openhab/persistence/jdbc/internal/db/JdbcBaseDAO.java

@@ -639,8 +639,7 @@ protected ItemVO storeItemValueProvider(Item item, State itemState, ItemVO vo) {
                 break;
             case "DATETIMEITEM":
                 vo.setValueTypes(getSqlTypes().get(itemType), java.sql.Timestamp.class);
-                java.sql.Timestamp d = new java.sql.Timestamp(
-                        ((DateTimeType) itemState).getZonedDateTime().toInstant().toEpochMilli());
+                java.sql.Timestamp d = new java.sql.Timestamp(((DateTimeType) itemState).getInstant().toEpochMilli());
                 logger.debug("JDBC::storeItemValueProvider: DateTimeItem: '{}'", d);
                 vo.setValue(d);
                 break;
@@ -684,7 +683,7 @@ protected State objectAsState(Item item, @Nullable Unit<? extends Quantity<?>> u
             }
             return unit == null ? DecimalType.valueOf(objectAsString(v)) : QuantityType.valueOf(objectAsString(v));
         } else if (item instanceof DateTimeItem) {
-            return new DateTimeType(objectAsInstant(v).atZone(ZoneId.systemDefault()));
+            return new DateTimeType(objectAsInstant(v));
         } else if (item instanceof ColorItem) {
             return HSBType.valueOf(objectAsString(v));
         } else if (item instanceof DimmerItem || item instanceof RollershutterItem) {

bundles/org.openhab.persistence.jdbc/src/test/java/org/openhab/persistence/jdbc/internal/db/JdbcBaseDAOTest.java

@@ -127,13 +127,11 @@ private static Stream<Arguments> provideTestCasesForObjectAsStateValid() {
                         LocalDateTime.parse("2021-02-01T23:30:02.049"), null,
                         DateTimeType.valueOf("2021-02-01T23:30:02.049")),
                 Arguments.of(new DateTimeItem("Long_DateTimeItem"), Long.valueOf("1612222202049"), null,
-                        new DateTimeType(ZonedDateTime.ofInstant(Instant.parse("2021-02-01T23:30:02.049Z"),
-                                ZoneId.systemDefault()))),
+                        new DateTimeType(Instant.parse("2021-02-01T23:30:02.049Z"))),
                 Arguments.of(new DateTimeItem("Date_DateTimeItem"), java.sql.Date.valueOf("2021-02-01"), null,
                         DateTimeType.valueOf("2021-02-01T00:00:00.000")),
                 Arguments.of(new DateTimeItem("Instant_DateTimeItem"), Instant.parse("2021-02-01T23:30:02.049Z"), null,
-                        new DateTimeType(ZonedDateTime.ofInstant(Instant.parse("2021-02-01T23:30:02.049Z"),
-                                ZoneId.systemDefault()))),
+                        new DateTimeType(Instant.parse("2021-02-01T23:30:02.049Z"))),
                 Arguments.of(new DateTimeItem("String_DateTimeItem"), "2021-02-01 23:30:02.049", null,
                         DateTimeType.valueOf("2021-02-01T23:30:02.049")));
     }