diff options
| -rw-r--r-- | server/src/main/java/com/vaadin/data/HasValue.java | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/server/src/main/java/com/vaadin/data/HasValue.java b/server/src/main/java/com/vaadin/data/HasValue.java index 962a3e9620..de2f86550f 100644 --- a/server/src/main/java/com/vaadin/data/HasValue.java +++ b/server/src/main/java/com/vaadin/data/HasValue.java @@ -19,6 +19,7 @@ import java.io.Serializable; import java.lang.reflect.Method; import java.util.EventObject; import java.util.Objects; +import java.util.Optional; import com.vaadin.event.SerializableEventListener; import com.vaadin.server.Setter; @@ -220,6 +221,18 @@ public interface HasValue<V> extends Serializable { } /** + * Returns the current value of this object, wrapped in an {@code Optional}. + * <p> + * The {@code Optional} will be empty if the value is {@code null} or + * {@code isEmpty()} returns {@code true}. + * + * @return the current value, wrapped in an {@code Optional} + */ + public default Optional<V> getOptionalValue() { + return isEmpty() ? Optional.empty() : Optional.ofNullable(getValue()); + } + + /** * Returns whether this {@code HasValue} is considered to be empty. * <p> * By default this is an equality check between current value and empty |