com.ikon.dao.NodeNoteDAO.java Source code

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Here is the source code for com.ikon.dao.NodeNoteDAO.java

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/**
 *  openkm, Open Document Management System (http://www.openkm.com)
 *  Copyright (c) 2006-2013  Paco Avila & Josep Llort
 *
 *  No bytes were intentionally harmed during the development of this application.
 *
 *  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 2 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, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

package com.ikon.dao;

import java.util.List;

import org.hibernate.Hibernate;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.ikon.core.AccessDeniedException;
import com.ikon.core.DatabaseException;
import com.ikon.core.PathNotFoundException;
import com.ikon.dao.bean.NodeBase;
import com.ikon.dao.bean.NodeNote;
import com.ikon.module.db.stuff.SecurityHelper;

public class NodeNoteDAO {
    private static Logger log = LoggerFactory.getLogger(NodeNoteDAO.class);
    private static NodeNoteDAO single = new NodeNoteDAO();

    private NodeNoteDAO() {
    }

    public static NodeNoteDAO getInstance() {
        return single;
    }

    /**
     * Find by parent
     */
    @SuppressWarnings("unchecked")
    public List<NodeNote> findByParent(String parentUuid) throws PathNotFoundException, DatabaseException {
        log.debug("findByParent({})", parentUuid);
        String qs = "from NodeNote nn where nn.parent=:parent order by nn.created";
        Session session = null;
        Transaction tx = null;

        try {
            session = HibernateUtil.getSessionFactory().openSession();
            tx = session.beginTransaction();

            // Security Check
            NodeBase parentNode = (NodeBase) session.load(NodeBase.class, parentUuid);
            SecurityHelper.checkRead(parentNode);

            Query q = session.createQuery(qs);
            q.setString("parent", parentUuid);
            List<NodeNote> ret = q.list();
            initialize(ret);
            HibernateUtil.commit(tx);
            log.debug("findByParent: {}", ret);
            return ret;
        } catch (PathNotFoundException e) {
            HibernateUtil.rollback(tx);
            throw e;
        } catch (DatabaseException e) {
            HibernateUtil.rollback(tx);
            throw e;
        } catch (HibernateException e) {
            HibernateUtil.rollback(tx);
            throw new DatabaseException(e.getMessage(), e);
        } finally {
            HibernateUtil.close(session);
        }
    }

    /**
     * Find by path
     */
    public NodeNote findByPk(String uuid) throws PathNotFoundException, DatabaseException {
        log.debug("findByPk({})", uuid);
        Session session = null;
        Transaction tx = null;

        try {
            session = HibernateUtil.getSessionFactory().openSession();
            tx = session.beginTransaction();

            // Security Check
            NodeBase parentNode = getParentNode(session, uuid);
            SecurityHelper.checkRead(parentNode);

            NodeNote ret = (NodeNote) session.load(NodeNote.class, uuid);
            initialize(ret);
            HibernateUtil.commit(tx);
            log.debug("findByPk: {}", ret);
            return ret;
        } catch (PathNotFoundException e) {
            HibernateUtil.rollback(tx);
            throw e;
        } catch (DatabaseException e) {
            HibernateUtil.rollback(tx);
            throw e;
        } catch (HibernateException e) {
            HibernateUtil.rollback(tx);
            throw new DatabaseException(e.getMessage(), e);
        } finally {
            HibernateUtil.close(session);
        }
    }

    /**
     * Create
     */
    public void create(NodeNote nNote) throws PathNotFoundException, AccessDeniedException, DatabaseException {
        log.debug("create({})", nNote);
        Session session = null;
        Transaction tx = null;

        try {
            session = HibernateUtil.getSessionFactory().openSession();
            tx = session.beginTransaction();

            // Security Check
            NodeBase parentNode = (NodeBase) session.load(NodeBase.class, nNote.getParent());
            SecurityHelper.checkRead(parentNode);
            SecurityHelper.checkWrite(parentNode);

            session.save(nNote);
            HibernateUtil.commit(tx);
            log.debug("create: void");
        } catch (PathNotFoundException e) {
            HibernateUtil.rollback(tx);
            throw e;
        } catch (AccessDeniedException e) {
            HibernateUtil.rollback(tx);
            throw e;
        } catch (DatabaseException e) {
            HibernateUtil.rollback(tx);
            throw e;
        } catch (HibernateException e) {
            HibernateUtil.rollback(tx);
            throw new DatabaseException(e.getMessage(), e);
        } finally {
            HibernateUtil.close(session);
        }
    }

    /**
     * Delete
     */
    public void delete(String uuid) throws PathNotFoundException, AccessDeniedException, DatabaseException {
        log.debug("delete({})", uuid);
        Session session = null;
        Transaction tx = null;

        try {
            session = HibernateUtil.getSessionFactory().openSession();
            tx = session.beginTransaction();

            // Security Check
            NodeBase parentNode = getParentNode(session, uuid);
            SecurityHelper.checkRead(parentNode);
            SecurityHelper.checkWrite(parentNode);

            NodeNote nNote = (NodeNote) session.load(NodeNote.class, uuid);
            session.delete(nNote);
            HibernateUtil.commit(tx);
        } catch (PathNotFoundException e) {
            HibernateUtil.rollback(tx);
            throw e;
        } catch (AccessDeniedException e) {
            HibernateUtil.rollback(tx);
            throw e;
        } catch (DatabaseException e) {
            HibernateUtil.rollback(tx);
            throw e;
        } catch (HibernateException e) {
            HibernateUtil.rollback(tx);
            throw new DatabaseException(e.getMessage(), e);
        } finally {
            HibernateUtil.close(session);
        }

        log.debug("delete: void");
    }

    /**
     * Update
     */
    public void update(NodeNote nNote) throws PathNotFoundException, AccessDeniedException, DatabaseException {
        log.debug("update({})", nNote);
        Session session = null;
        Transaction tx = null;

        try {
            session = HibernateUtil.getSessionFactory().openSession();
            tx = session.beginTransaction();

            // Security Check
            NodeBase parentNode = getParentNode(session, nNote.getUuid());
            SecurityHelper.checkRead(parentNode);
            SecurityHelper.checkWrite(parentNode);

            session.update(nNote);
            HibernateUtil.commit(tx);
        } catch (PathNotFoundException e) {
            HibernateUtil.rollback(tx);
            throw e;
        } catch (AccessDeniedException e) {
            HibernateUtil.rollback(tx);
            throw e;
        } catch (DatabaseException e) {
            HibernateUtil.rollback(tx);
            throw e;
        } catch (HibernateException e) {
            HibernateUtil.rollback(tx);
            throw new DatabaseException(e.getMessage(), e);
        } finally {
            HibernateUtil.close(session);
        }

        log.debug("update: void");
    }

    /**
     * Purge in depth helper
     */
    @SuppressWarnings("unchecked")
    public void purgeHelper(Session session, String parentUuid) throws HibernateException {
        String qs = "from NodeNote nn where nn.parent=:parent";
        Query q = session.createQuery(qs);
        q.setString("parent", parentUuid);
        List<NodeNote> listNotes = q.list();

        for (NodeNote nNote : listNotes) {
            session.delete(nNote);
        }
    }

    /**
     * Get parent node
     */
    public NodeBase getParentNode(String uuid) throws DatabaseException {
        log.debug("getParentNode({})", uuid);
        Session session = null;

        try {
            session = HibernateUtil.getSessionFactory().openSession();
            NodeBase parentNode = getParentNode(session, uuid);
            NodeBaseDAO.getInstance().initialize(parentNode);
            log.debug("getParentNode: {}", parentNode);
            return parentNode;
        } catch (HibernateException e) {
            throw new DatabaseException(e.getMessage(), e);
        } finally {
            HibernateUtil.close(session);
        }
    }

    /**
     * Get parent node
     */
    private NodeBase getParentNode(Session session, String uuid) throws HibernateException {
        log.debug("getParentNode({}, {})", session, uuid);
        String qs = "select nn.parent from NodeNote nn where nn.uuid=:uuid";
        Query q = session.createQuery(qs);
        q.setString("uuid", uuid);
        String parentUuid = (String) q.setMaxResults(1).uniqueResult();
        NodeBase parentNode = (NodeBase) session.load(NodeBase.class, parentUuid);
        log.debug("getParentNode: {}", parentNode);
        return parentNode;
    }

    /**
     * Force initialization of a proxy
     */
    private void initialize(NodeNote nNote) {
        if (nNote != null) {
            Hibernate.initialize(nNote);
        }
    }

    /**
     * Force initialization of a proxy
     */
    private void initialize(List<NodeNote> nNoteList) {
        for (NodeNote nNote : nNoteList) {
            initialize(nNote);
        }
    }
}