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eFaps is a framework used to map objects with or without attached files to a relational database and optional file systems (only for attaches files). Configurable access control can be provided down to object and attribute level depending on implementation and use case. Depending on requirements, events (like triggers) allow to implement business logic and to separate business logic from user interface. The framework includes integrations (e.g. webdav, full text search) and a web application as 'simple' configurable user interface. Some best practises, example web application modules (e.g. team work module) support administrators and implementers using this framework.

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/*
 * Copyright 2003 - 2013 The eFaps Team
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Revision:        $Rev$
 * Last Changed:    $Date$
 * Last Changed By: $Author$
 */

package org.efaps.update;

import java.net.URL;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.commons.jexl2.JexlContext;
import org.efaps.update.util.InstallationException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xml.sax.SAXException;

/**
 * TODO comment!
 *
 * @author The eFaps Team
 * @version $Id$
 */
public class DefaultEmptyUpdate
    implements IUpdate
{
    /**
     * Logging instance used to give logging information of this class.
     */
    public static final Logger LOG = LoggerFactory.getLogger(DefaultEmptyUpdate.class);

    /**
     * Url of the update file.
     */
    private final URL url;

    /**
     * @param _url url of the update file
     */
    public DefaultEmptyUpdate(final URL _url)
    {
        this.url = _url;
        DefaultEmptyUpdate.LOG.debug("Ignoring file: '{}'", _url);
    }

    @Override
    public void updateInDB(final JexlContext _jexlContext,
                           final UpdateLifecycle _step,
                           final Set _profiles)
        throws InstallationException
    {
        // nothing will be done at all
    }

    @Override
    public String getFileApplication()
    {
        return "Empty";
    }

   @Override
    public void readXML(final List _tags,
                        final Map _attributes,
                        final String _text)
        throws SAXException
    {
        // nothing will be done at all
    }

    @Override
    public URL getURL()
    {
        return this.url;
    }
}