org.vosao.business.impl.imex.GroupExporterImpl.java Source code

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Here is the source code for org.vosao.business.impl.imex.GroupExporterImpl.java

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/**
 * Vosao CMS. Simple CMS for Google App Engine.
 * 
 * Copyright (C) 2009-2010 Vosao development team.
 *
 * 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
 *
 * email: vosao.dev@gmail.com
 */

package org.vosao.business.impl.imex;

import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.vosao.business.imex.GroupExporter;
import org.vosao.dao.DaoTaskException;
import org.vosao.entity.GroupEntity;
import org.vosao.entity.UserEntity;
import org.vosao.entity.UserGroupEntity;
import org.vosao.entity.helper.UserHelper;

/**
 * @author Alexander Oleynik
 */
public class GroupExporterImpl extends AbstractExporter implements GroupExporter {

    public GroupExporterImpl(ExporterFactoryImpl factory) {
        super(factory);
    }

    @Override
    public String createGroupsXML() {
        Document doc = DocumentHelper.createDocument();
        Element groupsElement = doc.addElement("groups");
        createGroupsXML(groupsElement);
        return doc.asXML();
    }

    private void createGroupsXML(Element groupsElement) {
        List<GroupEntity> list = getDao().getGroupDao().select();
        for (GroupEntity Group : list) {
            createGroupXML(groupsElement, Group);
        }
    }

    private void createGroupXML(Element groupsElement, final GroupEntity group) {
        Element groupElement = groupsElement.addElement("group");
        groupElement.addElement("name").setText(group.getName());
        List<UserGroupEntity> userGroups = getDao().getUserGroupDao().selectByGroup(group.getId());
        Element users = groupElement.addElement("users");
        Map<Long, UserEntity> usersMap = UserHelper.createIdMap(getDao().getUserDao().select());
        for (UserGroupEntity userGroup : userGroups) {
            UserEntity user = usersMap.get(userGroup.getUserId());
            if (user != null) {
                users.addElement("user").setText(user.getEmail());
            }
        }
    }

    public void readGroups(Element groupsElement) throws DaoTaskException {
        Map<Long, UserEntity> usersMap = UserHelper.createIdMap(getDao().getUserDao().select());
        for (Iterator<Element> i = groupsElement.elementIterator(); i.hasNext();) {
            Element element = i.next();
            if (element.getName().equals("group")) {
                String name = element.elementText("name");
                GroupEntity group = getDao().getGroupDao().getByName(name);
                if (group == null) {
                    group = new GroupEntity(name);
                } else {
                    group.setName(name);
                }
                getDaoTaskAdapter().groupSave(group);
                for (Iterator<Element> j = element.element("users").elementIterator(); j.hasNext();) {
                    Element userElement = j.next();
                    UserEntity user = getDao().getUserDao().getByEmail(userElement.getText());
                    if (user != null) {
                        UserGroupEntity userGroup = getDao().getUserGroupDao().getByUserGroup(group.getId(),
                                user.getId());
                        if (userGroup == null) {
                            userGroup = new UserGroupEntity(group.getId(), user.getId());
                        }
                        getDaoTaskAdapter().userGroupSave(userGroup);
                    }
                }
            }
        }
    }

    /**
     * Read and import data from _groups/xml file.
     * @param xml - _groups.xml file content.
     * @throws DaoTaskException
     * @throws DocumentException
     */
    public void readGroupsFile(String xml) throws DaoTaskException, DocumentException {
        Document doc = DocumentHelper.parseText(xml);
        readGroups(doc.getRootElement());
    }

}