org.sigmah.offline.dao.PhaseModelAsyncDAO.java Source code

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Here is the source code for org.sigmah.offline.dao.PhaseModelAsyncDAO.java

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package org.sigmah.offline.dao;

/*
 * #%L
 * Sigmah
 * %%
 * Copyright (C) 2010 - 2016 URD
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/gpl-3.0.html>.
 * #L%
 */

import java.util.ArrayList;

import org.sigmah.offline.indexeddb.ObjectStore;
import org.sigmah.offline.indexeddb.Request;
import org.sigmah.offline.indexeddb.Store;
import org.sigmah.offline.indexeddb.Transaction;
import org.sigmah.offline.js.PhaseModelJS;
import org.sigmah.shared.dto.PhaseModelDTO;

import com.google.gwt.core.client.JsArrayInteger;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.inject.Singleton;

/**
 * Asynchronous DAO for saving and loading <code>PhaseModelDTO</code> objects.
 * 
 * @author Raphal Calabro (rcalabro@ideia.fr)
 */
@Singleton
public class PhaseModelAsyncDAO extends AbstractUserDatabaseAsyncDAO<PhaseModelDTO, PhaseModelJS> {

    /**
     * {@inheritDoc}
     */
    @Override
    public void get(final int id, final AsyncCallback<PhaseModelDTO> callback,
            final Transaction<Store> transaction) {
        if (transaction.useObjectFromCache(PhaseModelDTO.class, id, callback)) {
            return;
        }

        final ObjectStore phaseModelStore = transaction.getObjectStore(Store.PHASE_MODEL);

        phaseModelStore.get(id).addCallback(new AsyncCallback<Request>() {

            @Override
            public void onFailure(Throwable caught) {
                callback.onFailure(caught);
            }

            @Override
            public void onSuccess(Request request) {
                final PhaseModelJS phaseModelJS = request.getResult();
                if (phaseModelJS != null) {
                    final PhaseModelDTO phaseModelDTO = phaseModelJS.toDTO();
                    transaction.getObjectCache().put(id, phaseModelDTO);

                    final RequestManager<PhaseModelDTO> requestManager = new RequestManager<PhaseModelDTO>(
                            phaseModelDTO, callback);

                    final JsArrayInteger successors = phaseModelJS.getSuccessors();
                    if (successors != null) {
                        final ArrayList<PhaseModelDTO> dtos = new ArrayList<PhaseModelDTO>();
                        phaseModelDTO.setSuccessors(dtos);

                        for (int index = 0; index < successors.length(); index++) {
                            get(successors.get(index),
                                    new RequestManagerCallback<PhaseModelDTO, PhaseModelDTO>(requestManager) {

                                        @Override
                                        public void onRequestSuccess(PhaseModelDTO result) {
                                            dtos.add(result);
                                        }
                                    }, transaction);
                        }
                    }

                    requestManager.ready();

                } else {
                    callback.onSuccess(null);
                }
            }
        });
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Store getRequiredStore() {
        return Store.PHASE_MODEL;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public PhaseModelJS toJavaScriptObject(PhaseModelDTO t) {
        return PhaseModelJS.toJavaScript(t);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public PhaseModelDTO toJavaObject(PhaseModelJS js) {
        return js.toDTO();
    }

}