1 files changed, 34 insertions, 0 deletions
diff --git a/server/src/main/java/com/vaadin/data/Binder.java b/server/src/main/java/com/vaadin/data/Binder.java
index 699185dea3..747983bfa5 100644
--- a/server/src/main/java/com/vaadin/data/Binder.java
+++ b/server/src/main/java/com/vaadin/data/Binder.java
@@ -1787,6 +1787,23 @@ public class Binder<BEAN> implements Serializable {
     }
 
     /**
+     * Writes successfully converted and validated changes from the bound fields
+     * to the bean even if there are other fields with non-validated changes.
+     *
+     * @see #writeBean(Object)
+     * @see #writeBeanIfValid(Object)
+     * @see #readBean(Object)
+     * @see #setBean(Object)
+     *
+     * @param bean
+     *            the object to which to write the field values, not
+     *            {@code null}
+     */
+    public void writeBeanAsDraft(BEAN bean) {
+        doWriteDraft(bean, new ArrayList<>(bindings));
+    }
+
+    /**
      * Writes changes from the bound fields to the given bean if all validators
      * (binding and bean level) pass.
      * <p>
@@ -1874,6 +1891,23 @@ public class Binder<BEAN> implements Serializable {
     }
 
     /**
+     * Writes the successfully converted and validated field values into the
+     * given bean.
+     *
+     * @param bean
+     *            the bean to write field values into
+     * @param bindings
+     *            the set of bindings to write to the bean
+     */
+    @SuppressWarnings({ "unchecked" })
+    private void doWriteDraft(BEAN bean, Collection<Binding<BEAN, ?>> bindings) {
+        Objects.requireNonNull(bean, "bean cannot be null");
+
+        bindings.forEach(binding -> ((BindingImpl<BEAN, ?, ?>) binding)
+                    .writeFieldValue(bean));
+    }
+
+    /**
      * Restores the state of the bean from the given values. This method is used
      * together with {@link #getBeanState(Object, Collection)} to provide a way
      * to revert changes in case the bean validation fails after save.