all tests passed

Author: SiyaoIsHiding

core/src/main/java/com/datastax/oss/driver/internal/core/type/codec/DateCodec.java

@@ -157,6 +157,6 @@ private static int cqlDateToDaysSinceEpoch(long raw) {
   @NonNull
   @Override
   public Optional<Integer> serializedSize() {
-    return Optional.of(8);
+    return Optional.absent();
   }
 }

core/src/main/java/com/datastax/oss/driver/internal/core/type/codec/TimeCodec.java

@@ -118,6 +118,6 @@ public LocalTime parse(@Nullable String value) {
   @NonNull
   @Override
   public Optional<Integer> serializedSize() {
-    return Optional.of(8);
+    return Optional.absent();
   }
 }

core/src/main/java/com/datastax/oss/driver/internal/core/type/codec/VectorCodec.java

@@ -28,7 +28,12 @@
 import com.datastax.oss.driver.shaded.guava.common.collect.Iterables;
 import edu.umd.cs.findbugs.annotations.NonNull;
 import edu.umd.cs.findbugs.annotations.Nullable;
+
+import java.net.InetAddress;
 import java.nio.ByteBuffer;
+import java.time.Instant;
+import java.time.LocalDate;
+import java.time.LocalTime;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
@@ -99,14 +104,9 @@ public CqlVector<SubtypeT> decode(
   public String format(CqlVector<SubtypeT> value) {
     if (value == null) return "NULL";
 
-    // if the subtype is a string, double quote
-    if (!value.isEmpty() && value.iterator().next() instanceof String)
-      return value.stream()
-              .map(s -> (String) s)
-              .map(s -> "\"" + s + "\"")
-              .collect(Collectors.joining(", ", "[", "]"));
-
-    return Iterables.toString(value);
+    return value.stream()
+            .map(subtypeCodec::format)
+            .collect(Collectors.joining(", ", "[", "]"));
   }
 
   @Nullable

integration-tests/src/test/java/com/datastax/oss/driver/core/data/DataTypeIT.java

@@ -265,9 +265,11 @@ public static Object[][] typeSamples() {
               UdtValue udtValue2 = udt.newValue(1, o[1]);
               samples.add(new Object[] {udt, udtValue2});
 
-              // vector of type
-              CqlVector<?> vector = CqlVector.newInstance(o[1]);
-              samples.add(new Object[] {DataTypes.vectorOf(dataType, 1), vector});
+              if (CCM_RULE.getCassandraVersion().compareTo(Version.parse("5.0")) >= 0){
+                // vector of type
+                CqlVector<?> vector = CqlVector.newInstance(o[1]);
+                samples.add(new Object[] {DataTypes.vectorOf(dataType, 1), vector});
+              }
 
               return samples.stream();
             })