// Copyright 2004, 2005 The Apache Software Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package org.apache.tapestry.vlib.pages;
import java.rmi.RemoteException;
import javax.ejb.RemoveException;
import org.apache.hivemind.ApplicationRuntimeException;
import org.apache.tapestry.IPage;
import org.apache.tapestry.IRequestCycle;
import org.apache.tapestry.annotations.InjectPage;
import org.apache.tapestry.annotations.Message;
import org.apache.tapestry.annotations.Meta;
import org.apache.tapestry.html.BasePage;
import org.apache.tapestry.vlib.OperationsUser;
import org.apache.tapestry.vlib.ejb.Book;
import org.apache.tapestry.vlib.services.RemoteCallback;
/**
* Presents a confirmation page before deleting a book. If the user selects "yes", the book is
* deleted; otherwise the user is returned to the {@link MyLibrary} page.
*
* @author Howard Lewis Ship
*/
@Meta("page-type=MyLibrary")
public abstract class ConfirmBookDelete extends BasePage implements OperationsUser
{
public abstract void setBookId(Integer bookId);
public abstract void setBookTitle(String title);
@InjectPage("MyLibrary")
public abstract MyLibrary getMyLibrary();
@Message
public abstract String bookDeleted(String title);
/**
* Invoked (by {@link MyLibrary}) to select a book to be deleted. This method sets the
* temporary page properties (bookPrimaryKey and bookTitle) and invoked
* {@link IRequestCycle#setPage(IPage)}.
*/
public void selectBook(Integer bookId)
{
setBookId(bookId);
Book book = getRemoteTemplate().getBook(bookId);
setBookTitle(book.getTitle());
getRequestCycle().activate(this);
}
/**
* Hooked up to the yes component, this actually deletes the book.
*/
public void deleteBook(final Integer bookId)
{
RemoteCallback<Book> callback = new RemoteCallback()
{
public Book doRemote() throws RemoteException
{
try
{
return getOperations().deleteBook(bookId);
}
catch (RemoveException ex)
{
throw new ApplicationRuntimeException(ex);
}
}
};
Book book = getRemoteTemplate().execute(callback, "Error deleting book #" + bookId + ".");
MyLibrary myLibrary = getMyLibrary();
myLibrary.setMessage(bookDeleted(book.getTitle()));
myLibrary.activate();
}
}