Hi,
I would like to know what is the best way to work with the method
iterator of DataProvider.
I have created a class implementing IDataProvider. Depending of a
parameter, the DAO service called is not the same inside in the
iterator method. For some DAO services, a list is returned but for one
service, an object is returned instead of a list.
If I try to create a ArrayList inside the iterator, the following
error is generated :
org.apache.wicket.util.io.SerializableChecker$WicketNotSerializableException:
Unable to serialize class: java.util.AbstractList$Itr
Field hierarchy is:
0 [class=com.xpectis.x3s.fundbox.web.RequestPage, path=0]
private java.lang.Object
org.apache.wicket.MarkupContainer.children [class=[Ljava.lang.Object;]
java.lang.Object org.apache.wicket.Component.data[3]
[class=com.xpectis.x3s.fundbox.web.RequestPage$1, path=0:requestList]
private final
org.apache.wicket.markup.repeater.data.IDataProvider
org.apache.wicket.markup.repeater.data.DataViewBase.dataProvider
[class=com.xpectis.x3s.fundbox.web.data.RequestProvider]
private java.util.Iterator
com.xpectis.x3s.fundbox.web.data.RequestProvider.it
[class=java.util.AbstractList$Itr] <----- field that is not
serializable
at
org.apache.wicket.util.io.SerializableChecker.check(SerializableChecker.java:346)
How can I avoid this issue ?
Here is my code :
public class RequestProvider implements IDataProvider {
...
public Iterator iterator(int first, int count) {
result = new ArrayList<PlatformDTO>();
if (requestFormModel != null) {
if (requestFormModel.getId() != null) {
request =
requestService.getRequest(requestFormModel.getId());
result.add(request);
it = result.iterator();
} else if (requestFormModel.getFileName() != null) {
it =
requestService.findRequestByFileName(requestFormModel.getFileName()).iterator();
}
Regards,
Charles Moulliard
Senior Enterprise Architect
Apache Camel Committer
*****************************
blog : http://cmoulliard.blogspot.com
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