DATACASS-547 - Resolve converter ambiguities.

We now properly annotate read and writing converters to indicate proper conversion directions.

spring-data-cassandra/src/main/java/org/springframework/data/cassandra/core/convert/CassandraJsr310Converters.java

@@ -21,6 +21,8 @@ import java.util.Collection;
 import java.util.List;
 
 import org.springframework.core.convert.converter.Converter;
+import org.springframework.data.convert.ReadingConverter;
+import org.springframework.data.convert.WritingConverter;
 
 /**
  * Helper class to register JodaTime specific {@link Converter} implementations in case the library is present on the
@@ -53,6 +55,7 @@ public abstract class CassandraJsr310Converters {
 	 *
 	 * @author Mark Paluch
 	 */
+	@ReadingConverter
 	public enum CassandraLocalDateToLocalDateConverter
 			implements Converter<com.datastax.driver.core.LocalDate, LocalDate> {
 
@@ -69,6 +72,7 @@ public abstract class CassandraJsr310Converters {
 	 *
 	 * @author Mark Paluch
 	 */
+	@WritingConverter
 	public enum LocalDateToCassandraLocalDateConverter
 			implements Converter<LocalDate, com.datastax.driver.core.LocalDate> {