/**
* Copyright 2010 Philippe Beaudoin
*
* 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 com.puzzlebazar.shared.puzzle.model;
import javax.persistence.Id;
import javax.persistence.Transient;
import com.googlecode.objectify.Key;
import com.googlecode.objectify.annotation.Parent;
import com.puzzlebazar.shared.InvalidObjectException;
import com.puzzlebazar.shared.ObjectAlreadyInitializedException;
/**
* @param <T> The {@link Puzzle} type.
* @param <D> The {@link PuzzleDetails} type.
*
* @author Philippe Beaudoin
*/
public class PuzzleImpl<T extends Puzzle<?>, D extends PuzzleDetails<?>> implements Puzzle<T> {
private static final long serialVersionUID = 5993754990665635539L;
@Id Long id;
@Parent private Key<D> puzzleDetailsKey;
// TODO This need to be transient, we don't want to send it over the wire
@Transient protected D puzzleDetails;
/**
* Attaches this puzzle to its {@link PuzzleDetails}. This is only
* meant to be used within {@link com.puzzlebazar.server.puzzle.model.PuzzleDAO PuzzleDAO}.
*
* @param puzzleDetails The {@link PuzzleDetails} to attach to this puzzle.
* @throws ObjectAlreadyInitializedException If the puzzle is already attached to puzzle details.
* @throws InvalidObjectException If the attached puzzle details are invalid for this puzzle.
*/
@SuppressWarnings("unchecked")
public void attachToPuzzleDetails(D puzzleDetails)
throws ObjectAlreadyInitializedException, InvalidObjectException {
if (this.puzzleDetails != null) {
throw new ObjectAlreadyInitializedException("PuzzleDetails already set in PuzzleImpl.");
}
if (puzzleDetailsKey == null) {
puzzleDetailsKey = (Key<D>) puzzleDetails.createKey();
} else if (puzzleDetails.getId() != puzzleDetailsKey.getId()) {
throw new InvalidObjectException("PuzzleDetails id doesn't match the one in PuzzleImpl.");
}
this.puzzleDetails = puzzleDetails;
}
@Override
public PuzzleDetails<?> getPuzzleDetails() {
return puzzleDetails;
}
@Override
public Key<? extends PuzzleDetails<?>> getPuzzleDetailsKey() {
return puzzleDetailsKey;
}
@Override
public Key<T> createKey() {
return null;
}
@Override
public Long getId() {
return id;
}
}