Hibernate + ADF

Question

Hello everyone, sorry someone knows how can I use hibernate on the layer model, and ADF in the presentation layer?
I have made my connection to hibernate and I have also designed my page with ADF, and to unite both layers I created a "Data Control" but they do not work for me. I get the following error:
java.lang.OutOfMemoryError: PermGen space
sun.misc.Unsafe.defineClass at (Native Method)
at sun.reflect.ClassDefiner.defineClass (ClassDefiner.java: 45)
sun.reflect.MethodAccessorGenerator at $ 1.run (MethodAccessorGenerator.java: 381)
at java.security.AccessController.doPrivileged (Native Method)
at sun.reflect.MethodAccessorGenerator.generate (MethodAccessorGenerator.java: 377)
Truncated. see log file for complete Stacktrace
I think the error is when direcceciono in your hibernate file "hibernate.cfg.xml" because I write everything from what direction the unit c. I do this because when I write I do not routed to the directory where JDeveloper is installed.
Agradesco them in advance for your kind responses.

Answer 1

Hi Jhon, thanks for your help, and I get no error.
But when is not output any data in the table.
Here I show you the code:
group.jspx_
<af:panelCollection>
<f:facet name="menus"/>
<f:facet name="toolbar"/>
<f:facet name="statusbar"/>
<af:table value="#{bindings.grupos.collectionModel}"
var="row" rows="#{bindings.grupos.rangeSize}"
emptyText="#{bindings.grupos.viewable ? 'No rows yet.' : 'Access Denied.'}"
fetchSize="#{bindings.grupos.rangeSize}"
selectedRowKeys="#{bindings.grupos.collectionModel.selectedRow}"
selectionListener="#{bindings.grupos.collectionModel.makeCurrent}"
rowSelection="single" columnSelection="single"
editingMode="clickToEdit">
<af:column sortProperty="id" sortable="true"
headerText="#{bindings.grupos.hints.id.label}">
<af:inputText value="#{row.bindings.id.inputValue}"
label="#{bindings.grupos.hints.id.label}"
required="#{bindings.grupos.hints.id.mandatory}"
columns="#{bindings.grupos.hints.id.displayWidth}"
maximumLength="#{bindings.grupos.hints.id.precision}"
shortDesc="#{bindings.grupos.hints.id.tooltip}">
<f:validator binding="#{row.bindings.id.validator}"/>
</af:inputText>
</af:column>
<af:column sortProperty="descripcion" sortable="true"
headerText="#{bindings.grupos.hints.descripcion.label}">
<af:inputText value="#{row.bindings.descripcion.inputValue}"
label="#{bindings.grupos.hints.descripcion.label}"
required="#{bindings.grupos.hints.descripcion.mandatory}"
columns="#{bindings.grupos.hints.descripcion.displayWidth}"
maximumLength="#{bindings.grupos.hints.descripcion.precision}"
shortDesc="#{bindings.grupos.hints.descripcion.tooltip}">
<f:validator binding="#{row.bindings.descripcion.validator}"/>
</af:inputText>
</af:column>
<af:column sortProperty="estado" sortable="true"
headerText="#{bindings.grupos.hints.estado.label}">
<af:inputText value="#{row.bindings.estado.inputValue}"
label="#{bindings.grupos.hints.estado.label}"
required="#{bindings.grupos.hints.estado.mandatory}"
columns="#{bindings.grupos.hints.estado.displayWidth}"
maximumLength="#{bindings.grupos.hints.estado.precision}"
shortDesc="#{bindings.grupos.hints.estado.tooltip}">
<f:validator binding="#{row.bindings.estado.validator}"/>
</af:inputText>
</af:column>
<af:column sortProperty="inserted" sortable="true"
headerText="#{bindings.grupos.hints.inserted.label}">
<af:inputDate value="#{row.bindings.inserted.inputValue}"
label="#{bindings.grupos.hints.inserted.label}"
required="#{bindings.grupos.hints.inserted.mandatory}"
shortDesc="#{bindings.grupos.hints.inserted.tooltip}">
<f:validator binding="#{row.bindings.inserted.validator}"/>
<af:convertDateTime pattern="#{bindings.grupos.hints.inserted.format}"/>
</af:inputDate>
</af:column>
</af:table>
</af:panelCollection>
ServiceGroup.java_
public class ServicioGrupo {
Collection<Grupo> grupos = new ArrayList<Grupo>();
public ServicioGrupo() {
try {
catch (Exception e)
{ e.printStackTrace(); }
public void addGrupo( String gdescription ) {
Grupo group = new Grupo(gdescription);
try {
DaoMgr.save(group);
} catch (Exception e) {
e.printStackTrace();
public void addOrUpdateGrupo ( int id, String gdescription, boolean estado ) {
Grupo group = new Grupo(id, gdescription, estado);
try {
DaoMgr.saveOrUpdate(group);
} catch (Exception e) {
e.printStackTrace();
public void deleteGrupo( int id ) {
Grupo grupo = new Grupo();
grupo.setId(id);
try {
} catch (Exception e) {
e.printStackTrace();
public void setGroups( Collection<Grupo> newgrupos ) {
this.grupos = newgrupos;
public Collection<Grupo> getGrupos() {
try {
Grupo grupo = new Grupo();
String sql = "Select * from grupo;";
grupos = DaoMgr.load(sql, grupo);
System.out.println(grupos.size());
} catch (Exception e) {
e.printStackTrace();
return grupos;
and this method connection Hibernate
private HibernateUtil()
sessionFactory = null;
File conf = new File((new StringBuilder("conf")).append(File.separator).append("hibernate.cfg.xml").toString());
if(!conf.exists())
conf = new File((new StringBuilder("..")).append(File.separator).append("conf").append(File.separator).append("hibernate.cfg.xml").toString());
sessionFactory = (new Configuration()).configure(conf).buildSessionFactory();
if (sessionFactory == null)
System.out.println("nulo");
thanks in advance for your help