Well, what I have done in this situation is I use a "breadcrumb":
public class Breadcrumb implements Serializable
{
private final PageReference destination;
public Breadcrumb()
{
this.destination = PageReference.forRequestedPage();
}
public Link createCancelLink(String id)
{
return new CancelLink(id);
}
private class CancelLink extends Link
{
private static final long serialVersionUID = 1L;
public CancelLink(String id)
{
super(id);
}
public void onClick()
{
redirectToDestination();
}
}
public void redirectToDestination()
{
RequestCycle.get().setResponsePage(destination.getPage());
RequestCycle.get().setRedirect(true);
}
public Page getDestinationPage()
{
return destination.getPage();
}
}
public class PageReference<T extends Page> implements Serializable
{
//**********************************************************************************************************************
// Fields
//**********************************************************************************************************************
private static final long serialVersionUID = 1L;
private final String pageMapName;
private final int number;
private final int version;
public static <T extends Page> PageReference<T> forPage(T page)
{
page.setStatelessHint(false);
return new PageReference<T>(page.getPageMapName(),
page.getNumericId(), page.getCurrentVersionNumber());
}
public static PageReference<? extends Page> forRequestedPage()
{
final IRequestTarget target = RequestCycle.get().getRequestTarget();
if(target instanceof IPageRequestTarget)
{
return forPage(((IPageRequestTarget)target).getPage());
}
throw new WicketRuntimeException("Unable to determine calling
page.");
}
private PageReference(String pageMapName, int number, int version)
{
this.pageMapName = pageMapName;
this.number = number;
this.version = version;
}
@Override
public boolean equals(Object o)
{
if (this == o)
{
return true;
}
if (o == null || getClass() != o.getClass())
{
return false;
}
PageReference that = (PageReference) o;
if (number != that.number)
{
return false;
}
if (version != that.version)
{
return false;
}
if (!pageMapName.equals(that.pageMapName))
{
return false;
}
return true;
}
@Override
public int hashCode()
{
int result = pageMapName.hashCode();
result = 31 * result + number;
result = 31 * result + version;
return result;
}
@SuppressWarnings("unchecked")
public T getPage()
{
return (T) Session.get().getPage(pageMapName,
Integer.toString(number), version);
}
}
The breadcrumb allows you to go back to the exact page where you came from.
I use it along with a page superclass called "LoopPage" and a link class
called "LoopLink":
public class LoopPage extends WebPage
{
protected final Breadcrumb breadcrumb;
public LoopPage()
{
this.breadcrumb = new Breadcrumb();
}
protected void redirectToDestination()
{
breadcrumb.redirectToDestination();
}
protected Page getDestinationPage()
{
return breadcrumb.getDestinationPage();
}
}
public abstract class LoopLink extends SubmitLink
{
public LoopLink(String id)
{
super(id);
setDefaultFormProcessing(false);
}
protected abstract Page getLoopPage();
@Override
public final void onSubmit()
{
setResponsePage(getLoopPage());
setRedirect(true);
}
}
On Mon, Mar 29, 2010 at 10:23 AM, Flavius <[email protected]> wrote:
>
> I have a list page and a detail page. The
> list is the results of a search and I put
> this in a listview. The user can then click
> each item to view it in the detail.
>
> What I'm doing now is passing the result object
> to the detail page so they can continue to
> navigate (next >) the results without having
> to go back to the list. Also, when they return
> to the list, it should have the same results they
> had (preferrably without requerying the database).
>
> I now want to make the detail page bookmarkable.
> So I can pass a string value along that identifies
> the detail record to retrieve, but I'm in a quandry
> as to how to handle the result object.
>
> I need to put this someplace where the pages can see
> it and all I can think of is the session. I'm
> reluctant to put this on the session because it
> will be > 1k in size and possibly up to 3k. That's
> a big object to put on the session, especially in
> a clustered environment.
>
> Does anybody have any suggestions as to how to get
> the bookmarkable detail page and still have a ref
> to this result object?
>
>
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