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Ability to load/store worlds in datastore, plus reininitialization
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| package edu.gac.mcs270.gack.server; | ||
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| /* Copyright (c) 2009 Google Inc. | ||
| * | ||
| * 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. | ||
| */ | ||
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| //package com.google.appengine.demos.jdoexamples; | ||
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| import javax.jdo.JDOHelper; | ||
| import javax.jdo.PersistenceManagerFactory; | ||
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| public final class PMF { | ||
| private static final PersistenceManagerFactory pmfInstance = | ||
| JDOHelper.getPersistenceManagerFactory("transactions-optional"); | ||
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| private PMF() {} | ||
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| public static PersistenceManagerFactory get() { | ||
| return pmfInstance; | ||
| } | ||
| } |
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| package edu.gac.mcs270.gack.server; | ||
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| import javax.jdo.JDOObjectNotFoundException; | ||
| import javax.jdo.PersistenceManager; | ||
| import javax.jdo.annotations.IdentityType; | ||
| import javax.jdo.annotations.PersistenceCapable; | ||
| import javax.jdo.annotations.Persistent; | ||
| import javax.jdo.annotations.PrimaryKey; | ||
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| import com.google.gwt.user.server.rpc.RemoteServiceServlet; | ||
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| import edu.gac.mcs270.gack.shared.Persistence; | ||
| import edu.gac.mcs270.gack.shared.domain.Person; | ||
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| public class PersistenceImpl extends RemoteServiceServlet implements Persistence { | ||
| private static final long serialVersionUID = 7649793065322010303L; | ||
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| @PersistenceCapable(identityType=IdentityType.APPLICATION) | ||
| private static class SavedPlayer { | ||
| @SuppressWarnings("unused") | ||
| @PrimaryKey | ||
| private String name; | ||
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| @Persistent(serialized = "true") | ||
| private Person player; | ||
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| public SavedPlayer(String name, Person player) { | ||
| super(); | ||
| this.name = name; | ||
| this.player = player; | ||
| } | ||
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| public Person getPlayer() { | ||
| return player; | ||
| } | ||
| } | ||
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| public Person getPlayer(String name){ | ||
| PersistenceManager persistenceManager = PMF.get().getPersistenceManager(); | ||
| try{ | ||
| return persistenceManager.getObjectById(SavedPlayer.class, name).getPlayer(); | ||
| } catch(JDOObjectNotFoundException e){ | ||
| return null; | ||
| } | ||
| } | ||
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| public void savePlayer(Person player){ | ||
| SavedPlayer sp = new SavedPlayer(player.getName(), player); | ||
| PMF.get().getPersistenceManager().makePersistent(sp); | ||
| } | ||
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| public PersistenceImpl() { | ||
| super(); | ||
| } | ||
| } | ||
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| @@ -0,0 +1,12 @@ | ||
| package edu.gac.mcs270.gack.shared; | ||
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| import com.google.gwt.user.client.rpc.RemoteService; | ||
| import com.google.gwt.user.client.rpc.RemoteServiceRelativePath; | ||
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| import edu.gac.mcs270.gack.shared.domain.Person; | ||
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| @RemoteServiceRelativePath("persistence") | ||
| public interface Persistence extends RemoteService { | ||
| Person getPlayer(String name); | ||
| void savePlayer(Person player); | ||
| } |
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| package edu.gac.mcs270.gack.shared; | ||
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| import com.google.gwt.user.client.rpc.AsyncCallback; | ||
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| import edu.gac.mcs270.gack.shared.domain.Person; | ||
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| public interface PersistenceAsync { | ||
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| void getPlayer(String name, AsyncCallback<Person> callback); | ||
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| void savePlayer(Person player, AsyncCallback<Void> callback); | ||
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| } |
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