Hibernate ManyToOne with SelectItem

[jhollerer]

I try to create a DynamicForm where a Customer can be edited.
Each customer has a Title (Dr. or Prof) - and this should be selected with an SelectItem.


To solve that I have two classes - a Customer - and a Title.
Both are defined as a hibernate datasource (see below).
1) i do not get the content of the title shown (it is always a [object Object])
2) when loading the form i get the error "org.apache.commons.collections.map.LinkedMap cannot be cast to java.lang.Long"

what am i doing wrong - any idea - here are the Entitys - the datasource declaration and the client part - for better understanding!

PS: i do not want to change the field "title" into a String - as there still should be a database mapping (and the database is already used by another application - so i cannot change the field)

@Entity
public class Customer implements Serializable {


	@Id
	@Column(nullable = false)
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	private long cmtcustomerid;
	private String firstName;
	private String lastName;


	@ManyToOne
	@JoinTable(name = "CustomerTitle")
	private Title title;

getters / setters

@Entity
public class Title implements Serializable{
	
	@Id
	@Column(nullable = false)
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	private long titleId;
	private String titleName;

<DataSource ID="customer_title" serverType="hibernate"
	beanclassname="com.amergy.cmt.server.entity.Title" schemaBean="com.amergy.cmt.server.entity.Title">

	<fields>
		<field name="titleId" type="sequence" primaryKey="true" canEdit="false" hidden="true" />
		 
	</fields>


</DataSource>

<DataSource ID="customer" serverType="hibernate"
	beanclassname="com.amergy.cmt.server.entity.CMTCustomer" schemaBean="com.amergy.cmt.server.entity.CMTCustomer">

	<fields>
		<field name="cmtcustomerid" type="sequence" primaryKey="true"
			canEdit="false" hidden="true" />		 
		<field name="title" multiple="false" type="customer_title"/>
	</fields>

</DataSource>

		DynamicForm customerForm = new DynamicForm();		
		customerForm.setHeight100();
		customerForm.setWidth("90%");
		customerForm.setAutoFetchData(false);
		customerForm.setDataSource(DataSource.get("customer"));

		FormItem name = new FormItem("firstName");
		name.setTitle("First Name");

		FormItem lastname = new FormItem("lastName");
		lastname.setTitle("Last Name");

		SelectItem title = new SelectItem("title");
		title.setTitle("Title");
		title.setOptionDataSource(DataSource.get("customer_title"));
		title.setDisplayField("titleName");
		title.setValueField("titleId");

                customerForm.setItems(name, lastname, title);