py.una.pol.karaku.replication.client.ReplicationRequestFactory.java Source code

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Here is the source code for py.una.pol.karaku.replication.client.ReplicationRequestFactory.java

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/*-
 * Copyright (c)
 *
 *       2012-2014, Facultad Politcnica, Universidad Nacional de Asuncin.
 *       2012-2014, Facultad de Ciencias Mdicas, Universidad Nacional de Asuncin.
 *       2012-2013, Centro Nacional de Computacin, Universidad Nacional de Asuncin.
 *
 * 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; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * 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 library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301  USA
 */
package py.una.pol.karaku.replication.client;

import static py.una.pol.karaku.util.Checker.notNull;
import java.lang.reflect.Field;
import org.springframework.stereotype.Component;
import org.springframework.util.ReflectionUtils;
import py.una.pol.karaku.exception.KarakuRuntimeException;
import py.una.pol.karaku.util.KarakuReflectionUtils;

/**
 * 
 * @author Arturo Volpe
 * @since 2.2.8
 * @version 1.0 Nov 26, 2013
 * 
 */
@Component
public class ReplicationRequestFactory {

    private static final String[] FIELDS = { "id", "lastId" };

    /**
     * Crea un objeto del tipo request para una peticin de sincronizacin.
     * 
     * @param ri
     *            informacin de la replicacin
     * @return objeto request creado
     * @throws KarakuRuntimeException
     *             si no puede crear.
     */
    @SuppressWarnings("unchecked")
    public <T> T createMessage(ReplicationInfo ri) {

        return (T) getRequest(ri.getRequestClazz(), ri.getLastId());
    }

    /**
     * 
     * @param ri
     * @return
     */
    private Object getRequest(Class<?> clazz, String id) {

        try {
            Object o = clazz.newInstance();
            Field idF = KarakuReflectionUtils.findField(clazz, FIELDS);
            notNull(idF, "Cant get the Sync ID in the request, " + "please create a field with name id or use"
                    + "@ReplicationId, see '%s'", clazz);
            idF.setAccessible(true);
            ReflectionUtils.setField(idF, o, id);
            return o;
        } catch (Exception e) {
            throw new KarakuRuntimeException("Cant create request for ReplicateionInfo with id: " + id, e);
        }

    }
}