If you have an entity that contains a java.util.Map mapped to a table, the map's data does *not* get merged if you call merge against that entity.

I'd like to report that as a bug, but I am checking here first to make sure I am not missing anything.

My entity mapping looks like this:

<hibernate-mapping package="com.my.package">

<class name="MyEntity"
table="MY_TABLE">

....

<map name="myMap" table="MY_TABLE_MAP" access="field" lazy="false">
<key column="MY_TABLE_ID" />
<index column="NAME" type="string" length="50" />
<element column="VALUE" type="string" length="1000"/>
</map>

....
</class>
</hibernate-mapping>

The following code does not merge the contents of the map:

MyEntity myEntityInstance = new MyEntity();

myEntityInstance.setId("SomeId"); // Sets the id of an existing instance.

myEntityInstance.getMyMap.put("newKey", "newValue");

MyEntity mergedEntity = session.merge(myEntityInstance);

assertEquals("newValue", mergedEntity.getMyMap().get("newKey")) // Assertion fails!