#725 - L2 cache not updating CacheManyId's entry when Lazy loading on a ToMany relationship, after a prior update, when other ToMany is a vanilla type (like ArrayList)

src/main/java/com/avaje/ebeaninternal/server/deploy/BeanPropertyAssocMany.java

@@ -638,6 +638,8 @@ public class BeanPropertyAssocMany<T> extends BeanPropertyAssoc<T> {
     if (v instanceof BeanCollection<?>) {
       BeanCollection<?> bc = (BeanCollection<?>) v;
       return bc.isReference() ? bc : null;
+    } else if (v != null) {
+      return null;
     } else {
       return createReference(parentBean);
     }

src/test/java/com/avaje/ebeaninternal/server/deploy/BeanPropertyAssocManyTest.java

@@ -0,0 +1,43 @@
+package com.avaje.ebeaninternal.server.deploy;
+
+import com.avaje.ebean.BaseTestCase;
+import com.avaje.ebean.bean.BeanCollection;
+import com.avaje.ebean.bean.EntityBean;
+import com.avaje.tests.model.basic.Contact;
+import com.avaje.tests.model.basic.Customer;
+import org.junit.Test;
+
+import java.util.ArrayList;
+
+import static org.junit.Assert.*;
+
+public class BeanPropertyAssocManyTest extends BaseTestCase {
+
+  BeanDescriptor<Customer> customerDesc = spiEbeanServer().getBeanDescriptor(Customer.class);
+
+  BeanPropertyAssocMany<Customer> contacts() {
+    return (BeanPropertyAssocMany<Customer>)customerDesc.getBeanProperty("contacts");
+  }
+
+  @Test
+  public void createReferenceIfNull_when_notBeanCollection_expect_null() {
+
+    Customer customer = new Customer();
+    customer.setContacts(new ArrayList<Contact>());
+
+    BeanCollection<?> ref = contacts().createReferenceIfNull((EntityBean) customer);
+    assertNull(ref);
+  }
+
+  @Test
+  public void createReferenceIfNull_when_null_expect_ref() {
+
+    Customer customer = new Customer();
+    customer.setContacts(null);
+
+    BeanCollection<?> ref = contacts().createReferenceIfNull((EntityBean) customer);
+    assertNotNull(ref);
+    assertTrue(ref.isReference());
+  }
+
+}