/* ====================================================================
* 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
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* 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;
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.PageRedirectException;
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.EntitySelectionModel;
import org.apache.tapestry.vlib.IActivate;
import org.apache.tapestry.vlib.Protected;
import org.apache.tapestry.vlib.VirtualLibraryEngine;
import org.apache.tapestry.vlib.Visit;
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;
/**
* Used to manage giving away of books to other users.
*
* @author Howard Lewis Ship
* @version $Id: GiveAwayBooks.java,v 1.8 2003/06/19 10:58:52 hlship Exp $
* @since 3.0
*
**/
public abstract class GiveAwayBooks extends Protected implements PageRenderListener
{
public abstract IPropertySelectionModel getBooksModel();
public abstract void setBooksModel(IPropertySelectionModel booksModel);
public abstract IPropertySelectionModel getPersonModel();
public abstract void setPersonModel(IPropertySelectionModel personModel);
public abstract List getSelectedBooks();
public abstract Integer getTargetUserId();
public void formSubmit(IRequestCycle cycle)
{
VirtualLibraryEngine vengine = (VirtualLibraryEngine) getEngine();
Integer targetUserId = getTargetUserId();
Person target = vengine.readPerson(targetUserId);
List selectedBooks = getSelectedBooks();
int count = Tapestry.size(selectedBooks);
if (count == 0)
{
setError(format("select-at-least-one-book", target.getNaturalName()));
return;
}
Integer[] bookIds = (Integer[]) selectedBooks.toArray(new Integer[count]);
int i = 0;
while (true)
{
IOperations operations = vengine.getOperations();
try
{
operations.transferBooks(targetUserId, bookIds);
break;
}
catch (FinderException ex)
{
throw new ApplicationRuntimeException(ex);
}
catch (RemoteException ex)
{
vengine.rmiFailure(getMessage("update-failure"), ex, i++);
}
}
MyLibrary myLibrary = (MyLibrary) cycle.getPage("MyLibrary");
myLibrary.setMessage(
format("transfered-books", Integer.toString(count), target.getNaturalName()));
myLibrary.activate(cycle);
}
private IPropertySelectionModel buildPersonModel()
{
VirtualLibraryEngine vengine = (VirtualLibraryEngine) getEngine();
Visit visit = (Visit) vengine.getVisit();
Integer userPK = visit.getUserId();
Person[] persons = null;
int i = 0;
while (true)
{
IOperations operations = vengine.getOperations();
try
{
persons = operations.getPersons();
break;
}
catch (RemoteException ex)
{
vengine.rmiFailure(getMessage("read-users-failure"), ex, i++);
}
}
EntitySelectionModel result = new EntitySelectionModel();
for (i = 0; i < persons.length; i++)
{
Person p = persons[i];
Integer pk = p.getId();
if (pk.equals(userPK))
continue;
result.add(pk, p.getNaturalName());
}
return result;
}
public void pageBeginRender(PageEvent event)
{
IPropertySelectionModel model = getBooksModel();
if (model == null)
{
model = buildBooksModel();
setBooksModel(model);
}
model = getPersonModel();
if (model == null)
{
model = buildPersonModel();
setPersonModel(model);
}
}
private IPropertySelectionModel buildBooksModel()
{
VirtualLibraryEngine vengine = (VirtualLibraryEngine) getEngine();
Visit visit = (Visit) vengine.getVisit();
Integer userPK = visit.getUserId();
Book[] books = null;
int i = 0;
while (true)
{
books = null;
try
{
IBookQuery query = vengine.createNewQuery();
int count = query.ownerQuery(userPK, null);
if (count > 0)
books = query.get(0, count);
break;
}
catch (RemoteException ex)
{
vengine.rmiFailure(getMessage("read-books-failure"), ex, i++);
}
}
EntitySelectionModel result = new EntitySelectionModel();
if (books != null)
for (i = 0; i < books.length; i++)
result.add(books[i].getId(), books[i].getTitle());
return result;
}
public void pageValidate(PageEvent event)
{
super.pageValidate(event);
IPropertySelectionModel model = buildBooksModel();
if (model.getOptionCount() == 0)
{
IRequestCycle cycle = getRequestCycle();
IActivate page = (IActivate) cycle.getPage("MyLibrary");
page.activate(cycle);
throw new PageRedirectException(page);
}
setBooksModel(model);
}
}