/*
* Copyright (C) 2013 Red Hat, Inc. and/or its affiliates.
*
* 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.jboss.errai.demo.jpa.client.local;
import java.sql.Date;
import javax.annotation.PostConstruct;
import javax.inject.Inject;
import javax.persistence.EntityManager;
import javax.persistence.TypedQuery;
import org.jboss.errai.demo.jpa.client.shared.Album;
import org.jboss.errai.demo.jpa.client.shared.Artist;
import org.jboss.errai.demo.jpa.client.shared.Format;
import org.jboss.errai.demo.jpa.client.shared.Genre;
import org.jboss.errai.ioc.client.api.EntryPoint;
import org.jboss.errai.jpa.client.local.ErraiEntityManager;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.PopupPanel;
import com.google.gwt.user.client.ui.RootPanel;
@EntryPoint
public class Main {
@Inject
EntityManager em;
private AlbumTable albumsWidget = new AlbumTable();
private Button resetEverythingButton = new Button("Reset all data to defaults");
private Button newAlbumButton = new Button("New Album...");
private Button newArtistButton = new Button("New Artist...");
@PostConstruct
public void init() {
albumsWidget.setDeleteHandler(new RowOperationHandler<Album>() {
@Override
public void handle(Album a) {
em.remove(a);
em.flush();
refreshUI();
}
});
albumsWidget.setEditHandler(new RowOperationHandler<Album>() {
@Override
public void handle(Album a) {
AlbumForm af = new AlbumForm(a, em);
final PopupPanel pp = new PopupPanel(true, true);
af.setSaveHandler(new RowOperationHandler<Album>() {
@Override
public void handle(Album album) {
em.flush();
refreshUI();
pp.hide();
}
});
pp.setWidget(af);
pp.setGlassEnabled(true);
pp.show();
af.grabFocus();
}
});
resetEverythingButton.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
((ErraiEntityManager) em).removeAll();
preFillDatabaseIfEmpty();
refreshUI();
}
});
newAlbumButton.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
AlbumForm af = new AlbumForm(new Album(), em);
final PopupPanel pp = new PopupPanel(true, true);
af.setSaveHandler(new RowOperationHandler<Album>() {
@Override
public void handle(Album album) {
em.persist(album);
em.flush();
refreshUI();
pp.hide();
}
});
pp.setWidget(af);
pp.setGlassEnabled(true);
pp.show();
af.grabFocus();
}
});
newArtistButton.addClickHandler(new ClickHandler() {
@Override
public void onClick(ClickEvent event) {
ArtistForm af = new ArtistForm(new Artist(), em);
final PopupPanel pp = new PopupPanel(true, true);
af.setSaveHandler(new RowOperationHandler<Artist>() {
@Override
public void handle(Artist artist) {
em.persist(artist);
em.flush();
refreshUI();
pp.hide();
}
});
pp.setWidget(af);
pp.setGlassEnabled(true);
pp.show();
af.grabFocus();
}
});
preFillDatabaseIfEmpty();
refreshUI();
RootPanel.get().add(resetEverythingButton);
RootPanel.get().add(albumsWidget);
RootPanel.get().add(newAlbumButton);
RootPanel.get().add(newArtistButton);
}
private void refreshUI() {
TypedQuery<Album> albums = em.createNamedQuery("allAlbums", Album.class);
albumsWidget.removeAllRows();
albumsWidget.addAll(albums.getResultList());
}
/**
* If there are no Album instances in the database, this method creates and persists a selection of music from the 1960's.
*/
private void preFillDatabaseIfEmpty() {
TypedQuery<Album> albums = em.createNamedQuery("allAlbums", Album.class);
if (albums.getResultList().isEmpty()) {
Genre rock = new Genre("Rock");
Genre soul = new Genre("Soul");
Genre rnb = new Genre("R&B");
Artist beatles = new Artist();
beatles.setName("The Beatles");
beatles.addGenre(rock);
Artist samNDave = new Artist();
samNDave.setName("Sam & Dave");
samNDave.addGenre(rock);
samNDave.addGenre(soul);
samNDave.addGenre(rnb);
Album album = new Album();
album.setArtist(beatles);
album.setFormat(Format.LP);
album.setName("Let It Be");
album.setReleaseDate(new Date(11012400000L));
em.persist(album);
album = new Album();
album.setArtist(beatles);
album.setFormat(Format.LP);
album.setName("Abbey Road");
album.setReleaseDate(new Date(-8366400000L));
em.persist(album);
album = new Album();
album.setArtist(beatles);
album.setFormat(Format.LP);
album.setName("Yellow Submarine");
album.setReleaseDate(new Date(-30481200000L));
em.persist(album);
album = new Album();
album.setArtist(beatles);
album.setFormat(Format.LP);
album.setName("The Beatles");
album.setReleaseDate(new Date(-34974000000L));
em.persist(album);
album = new Album();
album.setArtist(beatles);
album.setFormat(Format.LP);
album.setName("Magical Mystery Tour");
album.setReleaseDate(new Date(-66164400000L));
em.persist(album);
album = new Album();
album.setArtist(beatles);
album.setFormat(Format.LP);
album.setName("Sgt. Pepper's Lonely Hearts Club Band");
album.setReleaseDate(new Date(-81633600000L));
em.persist(album);
album = new Album();
album.setArtist(beatles);
album.setFormat(Format.LP);
album.setName("Revolver");
album.setReleaseDate(new Date(-107553600000L));
em.persist(album);
album = new Album();
album.setArtist(beatles);
album.setFormat(Format.LP);
album.setName("Rubber Soul");
album.setReleaseDate(new Date(-128718000000L));
em.persist(album);
album = new Album();
album.setArtist(samNDave);
album.setFormat(Format.LP);
album.setName("Hold On, I'm Comin'");
album.setReleaseDate(new Date(-121114800000L));
em.persist(album);
album = new Album();
album.setArtist(samNDave);
album.setFormat(Format.LP);
album.setName("Double Dynamite");
album.setReleaseDate(new Date(-97354800000L));
em.persist(album);
album = new Album();
album.setArtist(samNDave);
album.setFormat(Format.LP);
album.setName("Soul Men");
album.setReleaseDate(new Date(-71092800000L));
em.persist(album);
// Some extra genres to play with
em.persist(new Genre("Classical"));
em.persist(new Genre("Country"));
em.persist(new Genre("Folk"));
em.persist(new Genre("Funk"));
em.persist(new Genre("Pop"));
// store them
em.flush();
}
}
}