saving nested Dictionary<string, object>

[trivalik]

I used in past NH3.3 to save Dictionary<string, object>, which has a bag and for it use again a Dictionary<string, object>.
This breaks first on NH-3757 and maybe removed on NH-3722 completly (not sure).

I think this is the unit test to check it (add into NHibernate.Test.NHSpecificTest.NH3757.Fixture class):

        [Test]
        public void ShouldBePossibleToDynamicComponentInEntityNameMappedEntity()
        {
	        using (ISession session = OpenSession())
	        using (ITransaction transaction = session.BeginTransaction())
	        {
		        var e1 = new Dictionary<string, object>();
		        e1["Money"] = new Dictionary<string, object> { { "Amount", 100m }, { "Currency", "USD" } };

		        session.Save("EntityName", e1);

		        session.Flush();
		        transaction.Commit();
	        }
        }

How this kind of nested Dictionaries called? Dynamic objects? Is it really removed or a mistake? Is Dom4j used in background?

[gliljas]

For that to work, "Money" would have to be mapped as "dynamic-component", but it's mapped as "Money".

[trivalik]

This is the change in xml (tested by upper unit test):

    <dynamic-component name="Money">
      <property name="Amount" column="Amount" type="decimal"/>
      <property name="Currency" column="Currency" type="string"/>
    </dynamic-component>

(column attribut is in this case optional.)

I see I mixed something, in past it was possible by:

<composite-element class=""" + typeof(Money).AssemblyQualifiedName + @""">
  <property name=""Amount"" type=""System.Decimal"">
    <column name=""amount"" not-null=""true"" />
  </property>
  <property name=""Currency"" type=""System.String"">
    <column name=""currency"" not-null=""true"" />
  </property>
</composite-element>

using in a bag.
Is the use of nested dictionaries now only possible for dynamic-components?

edit:

I tried to extend the bag test in NH1356:

mapping (just added in class element the entity-name):

<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" assembly="NHibernate.Test" namespace="NHibernate.Test.NHSpecificTest.NH1356">
	<class name="Person" lazy="false" entity-name="PersonEnt">
		<id name="Id">
			<generator class="native" />
		</id>
		<property name="Name" />

		<bag name="Addresses" table="Addresses" lazy="false" generic="true">
			<key column="PersonId" />

			<composite-element class="Address">
				<property name="Street" access="field.camelcase" />
				<property name="City" access="field.camelcase" />
				<property name="State" access="field.camelcase" />
				<property name="PostalCode" access="field.camelcase" />
			</composite-element>
		</bag>
	</class>
</hibernate-mapping>

updated test:

			using (ISession session = OpenSession())
			{
				using (ITransaction tx = session.BeginTransaction())
				{
					var templ = new Dictionary<string, object>
					{
						{ "Name", "Bob" },
						{ "Addresses", new []
							{
								new Dictionary<string, object>
								{
									{ "Street", "123 Main St." },
									{ "City", "Anytown" },
									{ "State", "LA" },
									{ "PostalCode", "12345" },
								},
								new Dictionary<string, object>
								{
									{ "Street", "456 Main St." },
									{ "City", "Anytown" },
									{ "State", "LA" },
									{ "PostalCode", "12345" },
								}
							}
						}
					};

					session.Save("PersonEnt", templ);

					tx.Commit();
				}
			}

I receive invalid cast exception, type System.Collections.Generic.Dictionary2[System.String,System.Object]cannot be casted toNHibernate.Test.NHSpecificTest.NH1356.Person`. In NHibernate 3.3.1 was this possible.