The second version of the demo helped me to correct the way custom
objects are passed in the selection property model classes. I have
made the changes in my selection model classes and also the
pageBeginningRender() method. However, I am still having the same
problem. I have posted the .page and codes below.
-waimun
<!-- .page -->
<property-specification name="toDepartment"
type="project6.model.UserDepartment"
persistent="no" />
<property-specification name="user" type="project6.model.UserAccount"
persistent="no" />
<property-specification name="departmentSelectionModel"
type="org.apache.tapestry.form.IPropertySelectionModel"
persistent="no" />
<property-specification name="usersByDepartmentList"
type="java.util.List" initial-value="new java.util.ArrayList()"
persistent="no" />
<property-specification name="userDepartmentDao"
type="project6.dao.UserDepartmentDao">
global.getApplicationContext().getBean("userDepartmentDao")
</property-specification>
<property-specification name="userAccountDao"
type="project6.dao.UserAccountDao">
global.getApplicationContext().getBean("userAccountDao")
</property-specification>
<component id="referralForm" type="Form">
<binding name="listener" expression="listeners.formSubmit"/>
</component>
<component id="deptSelection" type="PropertySelection">
<binding name="value" expression="toDepartment" />
<binding name="model" expression="departmentSelectionModel" />
<binding name="disabled" expression="false" />
<static-binding name="submitOnChange" value="false" />
</component>
<component id="userSelection" type="man:DynamicSelectionList">
<binding name="parent" expression="components.deptSelection" />
<binding name="value" expression="user" />
<binding name="childList" expression="usersByDepartmentList" />
</component>
<!-- .page -->
/* method's code for page */
public void pageBeginRender(PageEvent event) {
List allDepartments = getUserDepartmentDao().findAll();
if (getDepartmentSelectionModel() == null) {
setDepartmentSelectionModel(new
DepartmentSelectionModel(
allDepartments));
}
if (getUsersByDepartmentList().size() == 0) {
DepartmentSelectionModel deptModel = (DepartmentSelectionModel)
getDepartmentSelectionModel();
for (Iterator it = deptModel.getDepartmentList().iterator(); it
.hasNext();) {
UserDepartment d = (UserDepartment) it.next();
List usersByDepartment =
getUserAccountDao().findByDepartment(d);
if (usersByDepartment.size() == 0) {
List a = new ArrayList();
a.add(getUserAccountDao().findByUsername("Waimun
Yeow"));
usersByDepartment = a;
}
getUsersByDepartmentList().add(
new
UsersByDepartmentSelectionModel(usersByDepartment));
}
}
if (getToDepartment() == null) {
setToDepartment((UserDepartment) getDepartmentSelectionModel
().getOption(4));
}
}
/* method's code for page */
/* models' class */
public class UsersByDepartmentSelectionModel implements
IPropertySelectionModel, Serializable {
private List usersList = new ArrayList();
private static UserAccountDao dao;
public UsersByDepartmentSelectionModel() {
XmlBeanFactory factory = new XmlBeanFactory(new
ClassPathResource(
"DaoContext.xml"));
dao = (UserAccountDao) factory.getBean("userAccountDao");
}
public UsersByDepartmentSelectionModel(List users) {
this();
if (users == null)
return;
usersList = users;
}
public int getOptionCount() {
return usersList.size();
}
public Object getOption(int index) {
return usersList.get(index);
}
public String getLabel(int index) {
return ((UserAccount) usersList.get(index)).getUserName();
}
public String getValue(int index) {
return ((UserAccount)
usersList.get(index)).getUserId().toString();
}
public Object translateValue(String index) {
return dao.findByUserId(Integer.parseInt(index));
}
public List getUsersList() {
return usersList;
}
}
public class DepartmentSelectionModel implements
IPropertySelectionModel, Serializable {
private List departmentList = new ArrayList();
private static UserDepartmentDao dao;
public DepartmentSelectionModel() {
XmlBeanFactory factory = new XmlBeanFactory(new
ClassPathResource(
"DaoContext.xml"));
dao = (UserDepartmentDao) factory.getBean("userDepartmentDao");
}
public DepartmentSelectionModel(List depts) {
this();
if (depts == null)
return;
departmentList = depts;
}
public int getOptionCount() {
return departmentList.size();
}
public Object getOption(int index) {
return departmentList.get(index);
}
public String getLabel(int index) {
return ((UserDepartment) departmentList.get
(index)).getDepartmentName();
}
public String getValue(int index) {
return ((UserDepartment) departmentList.get(index)).getDepartmentId
().toString();
}
public Object translateValue(String index) {
return dao.findByDepartmentId(Integer.parseInt(index));
}
public List getDepartmentList() {
return departmentList;
}
}
/* models' class */
On 8/15/06, Nick Westgate wrote:
> Hi Waimin.
>
> > The BikeMaker example above uses StringPropertySelectionModel and
> > String[] objects for the drop-down selection lists. However, I
modified
> > my program to use custom PropertySelectionModel(s) and custom
objects
> > as value objects in the models.
>
> There are two versions of the demo and one of them uses custom
models,
> *not* StringPropertySelectionModel:
>
> http://lombok.demon.co.uk/tapestryDemo/welcome?service=page/
TestDSLComponent2
> http://lombok.demon.co.uk/tapestryDemo/welcome?service=page/
TestDSLComponent2Source
>
> You should look carefully at that example.
>
> If you still can't find the problem please post your .page file and
> perhaps the child model code.
>
> Cheers,
> Nick.
>
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