/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation", "Tapestry"
* must not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* or "Tapestry", nor may "Apache" or "Tapestry" appear in their
* name, without prior written permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE TAPESTRY CONTRIBUTOR COMMUNITY
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.tapestry.vlib.pages.admin;
import java.rmi.RemoteException;
import java.util.List;
import javax.ejb.FinderException;
import org.apache.tapestry.ApplicationRuntimeException;
import org.apache.tapestry.IRequestCycle;
import org.apache.tapestry.Tapestry;
import org.apache.tapestry.event.PageEvent;
import org.apache.tapestry.event.PageRenderListener;
import org.apache.tapestry.form.IPropertySelectionModel;
import org.apache.tapestry.vlib.AdminPage;
import org.apache.tapestry.vlib.EntitySelectionModel;
import org.apache.tapestry.vlib.IErrorProperty;
import org.apache.tapestry.vlib.IMessageProperty;
import org.apache.tapestry.vlib.VirtualLibraryEngine;
import org.apache.tapestry.vlib.ejb.Book;
import org.apache.tapestry.vlib.ejb.IBookQuery;
import org.apache.tapestry.vlib.ejb.IOperations;
import org.apache.tapestry.vlib.ejb.Person;
/**
* Second page in Transfer Books wizard; allows the books owned by the
* from user to be selected and transfered to the target user.
*
* @author Howard Lewis Ship
* @version $Id: TransferBooksTransfer.java,v 1.8 2003/05/28 13:41:46 hlship Exp $
* @since 3.0
*
**/
public abstract class TransferBooksTransfer extends AdminPage implements PageRenderListener
{
public abstract Person getFromUser();
public abstract void setFromUser(Person fromUser);
public abstract Integer getFromUserId();
public abstract void setFromUserId(Integer fromUserId);
public abstract Integer getToUserId();
public abstract void setToUserId(Integer toUserId);
public abstract Person getToUser();
public abstract void setToUser(Person toUser);
public abstract List getSelectedBooks();
public abstract IPropertySelectionModel getUserBookModel();
public abstract void setUserBookModel(IPropertySelectionModel userBookModel);
public void activate(IRequestCycle cycle, Integer fromUserId, Integer toUserId)
{
Person fromUser = readPerson(fromUserId);
IPropertySelectionModel model = buildUserBookModel(fromUser);
if (model.getOptionCount() == 0)
{
IErrorProperty page = (IErrorProperty) cycle.getPage();
page.setError(format("user-has-no-books", fromUser.getNaturalName()));
return;
}
setFromUserId(fromUserId);
setFromUser(fromUser);
setToUserId(toUserId);
setUserBookModel(model);
cycle.activate(this);
}
/**
* Only properties toUserPK and fromUserPK are persistent. We need to refresh
* the fromUser, toUser and userBookModel properties at the start
* of each request cycle.
*
**/
public void pageBeginRender(PageEvent event)
{
Person fromUser = getFromUser();
if (fromUser == null)
{
fromUser = readPerson(getFromUserId());
setFromUser(fromUser);
}
if (getUserBookModel() == null)
setUserBookModel(buildUserBookModel(fromUser));
Person toUser = getToUser();
if (toUser == null)
{
toUser = readPerson(getToUserId());
setToUser(toUser);
}
}
public void formSubmit(IRequestCycle cycle)
{
List selectedBooks = getSelectedBooks();
int count = Tapestry.size(selectedBooks);
if (count == 0)
{
setError(getMessage("no-books-selected"));
return;
}
Integer[] keys = (Integer[]) selectedBooks.toArray(new Integer[count]);
Person toUser = getToUser();
VirtualLibraryEngine vengine = (VirtualLibraryEngine) getEngine();
int i = 0;
while (true)
{
try
{
IOperations operations = vengine.getOperations();
operations.transferBooks(toUser.getId(), keys);
break;
}
catch (FinderException ex)
{
throw new ApplicationRuntimeException(ex);
}
catch (RemoteException ex)
{
vengine.rmiFailure("Unable to transfer ownership of books.", ex, i++);
}
}
Person fromUser = getFromUser();
IMessageProperty selectPage = (TransferBooksSelect) cycle.getPage("TransferBooksSelect");
selectPage.setMessage(
format(
"transfered-books",
Integer.toString(count),
fromUser.getNaturalName(),
toUser.getNaturalName()));
cycle.activate(selectPage);
}
private IPropertySelectionModel buildUserBookModel(Person user)
{
VirtualLibraryEngine vengine = (VirtualLibraryEngine) getEngine();
Book[] books = null;
int i = 0;
while (true)
{
books = null;
try
{
IBookQuery query = vengine.createNewQuery();
int count = query.ownerQuery(user.getId(), null);
if (count > 0)
books = query.get(0, count);
break;
}
catch (RemoteException ex)
{
vengine.rmiFailure(
"Unable to retrieve books owned by " + user.getNaturalName() + ".",
ex,
i++);
}
}
EntitySelectionModel model = new EntitySelectionModel();
if (books != null)
for (i = 0; i < books.length; i++)
model.add(books[i].getId(), books[i].getTitle());
return model;
}
private Person readPerson(Integer personId)
{
VirtualLibraryEngine vengine = (VirtualLibraryEngine) getEngine();
return vengine.readPerson(personId);
}
}