#115 - Mapping - Add support for @ElementCollection enhancement

Initial support - simple List.

src/main/java/io/ebeaninternal/server/query/CQueryCollectionAdd.java

@@ -0,0 +1,21 @@
+package io.ebeaninternal.server.query;
+
+import io.ebean.bean.BeanCollection;
+import io.ebean.bean.EntityBean;
+
+/**
+ * Defines interface for adding beans to the collection which might be a List, Set or Map.
+ */
+public interface CQueryCollectionAdd<T> {
+
+  /**
+   * Create an empty collection.
+   */
+  BeanCollection<T> createEmptyNoParent();
+
+  /**
+   * Add a bean to the List Set or Map.
+   */
+  void add(BeanCollection<?> collection, EntityBean bean, boolean withCheck);
+
+}