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/**
 * Copyright (C) 2019 Bonitasoft S.A.
 * Bonitasoft, 32 rue Gustave Eiffel - 38000 Grenoble
 * This library is free software; you can redistribute it and/or modify it under the terms
 * of the GNU Lesser General Public License as published by the Free Software Foundation
 * version 2.1 of the License.
 * This library 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 Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License along with this
 * program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
 * Floor, Boston, MA 02110-1301, USA.
 **/
package org.bonitasoft.engine.operation;

import java.util.ArrayList;
import java.util.List;

import org.bonitasoft.engine.bdm.Entity;
import org.bonitasoft.engine.business.data.BusinessDataRepository;
import org.bonitasoft.engine.business.data.proxy.ServerProxyfier;

/**
 * @author Elias Ricken de Medeiros
 * @author Matthieu Chaffotte
 */
public class MergeEntityAction implements EntityAction {

    BusinessDataRepository repository;

    public MergeEntityAction(final BusinessDataRepository repository) {
        this.repository = repository;
    }

    @Override
    public Entity execute(final Entity entity, final BusinessDataContext businessDataContext)
            throws SEntityActionExecutionException {
        if (entity == null) {
            throw new SEntityActionExecutionException("Unable to insert/update a null business object instance");
        }
        try {
            return repository.merge(ServerProxyfier.unProxifyIfNeeded(entity));
        } catch (final IllegalArgumentException iae) {
            throw new SEntityActionExecutionException(iae);
        }
    }

    @Override
    public List execute(final List entities, final BusinessDataContext businessDataContext)
            throws SEntityActionExecutionException {
        final List mergedEntities = new ArrayList<>();
        for (final Entity entity : entities) {
            if (entity != null) {
                mergedEntities.add(execute(entity, businessDataContext));
            }
        }
        return mergedEntities;
    }

    @Override
    public void handleNull(final BusinessDataContext businessDataContext) throws SEntityActionExecutionException {
        throw new SEntityActionExecutionException("Cannot save a null entity");
    }

}