Custom data bean collection

Question

I want to make available in Data Control Palette a custom collection data control. I proceeded like samples in [a]http://www.oracle.com/technology/products/jdev/collateral/papers/10g/ADFBindingPrimer/ADFBindingIntro.zip[a] from doc. Oracle ADF Data Binding Primer and ADF/Struts Overview but I didn't obtain same result (look for CommissionPlan+CommissionService).
That are my files which I made to construct my custom data collection control:
1)The child java bean:
package tdb.zero.model;
public class PersonBean
  String name;
  String pren;
  public PersonBean()
  public PersonBean(String s1, String s2)
  {setName(s1);setPren(s2);
  public String getName()
    return name;
  public void setName(String name)
    this.name = name;
  public String getPren()
    return pren;
  public void setPren(String pren)
    this.pren = pren;
} and the descriptive file of the bean:
<?xml version='1.0' encoding='windows-1252'?>
<JavaBean
   id="PersonBean"
   xmlns="http://xmlns.oracle.com/adfm/beanmodel"
   version="9.0.5.15.88"
   BeanClass="tdb.zero.model.PersonBean" >
   <Contents >
      <Attribute
         Name="name"
         IsUpdateable="true"
         AttrLoad="Each"
         IsQueriable="false"
         IsVisible="true"
         IsPersistent="false"
         IsUnique="false"
         IsNotNull="false"
         PrecisionRule="true"
         DiscrColumn="false"
         SourceName="name"
         Type="java.lang.String" >
      </Attribute>
      <Attribute
         Name="pren"
         IsUpdateable="true"
         AttrLoad="Each"
         IsQueriable="false"
         IsVisible="true"
         IsPersistent="false"
         IsUnique="false"
         IsNotNull="false"
         PrecisionRule="true"
         DiscrColumn="false"
         SourceName="pren"
         Type="java.lang.String" >
      </Attribute>
   </Contents>
</JavaBean>2) the collection:
package tdb.zero.model;
import java.util.ArrayList;
import tdb.zero.model.PersonBean;
public class AgendaBean
  private ArrayList agenda= new ArrayList(10);
  public AgendaBean()
    agenda.add(new PersonBean("twew","pdske"));
    agenda.add(new PersonBean("peter","george"));
    agenda.add(new PersonBean("raddsu","iosxdnel"));
    agenda.add(new PersonBean("paz","raz"));
  public void setAgenda(ArrayList agenda)
    this.agenda = agenda;
  public ArrayList getAgenda()
    return agenda;
}I generated this AgendaBean class as custom data control and the xml is:
<?xml version='1.0' encoding='windows-1252' ?>
<JavaBean
   id="AgendaBean"
   xmlns="http://xmlns.oracle.com/adfm/beanmodel"
   version="10.1.2.18.73"
   BeanClass="tdb.zero.model.AgendaBean" >
   <Contents >
      <AccessorAttribute
         id="agenda"
         BeanClass="tdb.zero.model.PersonBean"
         IsCollection="true"
         Type="java.util.ArrayList" >
      </AccessorAttribute>
   </Contents>
</JavaBean>The DataControls.dcx is:
<?xml version='1.0' encoding='windows-1252' ?>
<DataControlConfigs
   id="DataControls"
   xmlns="http://xmlns.oracle.com/adfm/configuration"
   version="10.1.2.18.73" >
   <Contents >
      <DataControl
         id="AgendaBeanDataControl"
         SubType="DCJavaBean"
         SupportsFindMode="false"
         SupportsTransactions="false"
         FactoryClass="oracle.adf.model.generic.DataControlFactoryImpl"
         Definition="tdb.zero.model.AgendaBean"
         BeanClass="tdb.zero.model.AgendaBean" >
      </DataControl>
   </Contents>
</DataControlConfigs>In Control Data Palette I have no acces to name and pren attributes of collection agenda.
I receive the error:
Wrong node type found. Expected a node of type oracle.adf.dt.navigator.nodes.BeanModelXmlNode , but found type oracle.bali.xml.addin.XMLSourceNode. You need to create your data control in a seperate project.
. What that means? What I have to do things works?
null

Answer 1

I found a solution reading the doc. above.
You don't have to manual describe an xml file for structure of the child bean (members of the collection).
Since introspection of the AgendaBean only tells us that the property is of type Collection, this additional "Bean class" metadata property lets us record the specific kind of bean that will be in the collection at runtime, tdb.zero.model.PersonBean. I had to set this property manually, using the Property Inspector. Once you tie the PersonBean bean into the AgendaBean by setting this BeanClass property, JDeveloper 10g creates the PersonBean.xml metadata file as well to record metadata about that bean as well. Strange is that automatically generated xml contains same data as the before xml file made by hand by me.
Now, the problem is how to make the collection class to keep the current row indicator trace. If I post something to my current row, the row pointer is resetted to the first. I want this pointer to mantain its position.