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OpenCms is an enterprise-ready, easy to use website content management system based on Java and XML technology. Offering a complete set of features, OpenCms helps content managers worldwide to create and maintain beautiful websites fast and efficiently.

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/*
 * This library is part of OpenCms -
 * the Open Source Content Management System
 *
 * Copyright (c) Alkacon Software GmbH & Co. KG (http://www.alkacon.com)
 *
 * 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.
 *
 * For further information about Alkacon Software GmbH & Co. KG, please see the
 * company website: http://www.alkacon.com
 *
 * For further information about OpenCms, please see the
 * project website: http://www.opencms.org
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package org.opencms.setup.xml.v8;

import org.opencms.configuration.CmsConfigurationManager;
import org.opencms.configuration.CmsSystemConfiguration;
import org.opencms.setup.xml.A_CmsSetupXmlUpdate;

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

import org.dom4j.Document;
import org.dom4j.Node;

/**
 * Update default Flexcache capacities.
 *
 * @since 8.0.0
 */
public class CmsXmlUpdateFlexcache extends A_CmsSetupXmlUpdate {

    /** New cache capacities. */
    private String[] m_capacities = new String[] {"80000000", "60000000", "4000000", "5000"};

    /** List of xpaths to update. */
    private List m_xpaths;

    /**
     * @see org.opencms.setup.xml.I_CmsSetupXmlUpdate#getName()
     */
    public String getName() {

        return "Update default Flexcache capacities";
    }

    /**
     * @see org.opencms.setup.xml.I_CmsSetupXmlUpdate#getXmlFilename()
     */
    public String getXmlFilename() {

        return CmsSystemConfiguration.DEFAULT_XML_FILE_NAME;
    }

    /**
     * @see org.opencms.setup.xml.A_CmsSetupXmlUpdate#executeUpdate(org.dom4j.Document, java.lang.String, boolean)
     */
    @Override
    protected boolean executeUpdate(Document document, String xpath, boolean forReal) {

        Node node = document.selectSingleNode(xpath);
        if (node != null) {
            int pos = getXPathsToUpdate().indexOf(xpath);
            node.setText(m_capacities[pos]);
            return true;
        }
        return false;
    }

    /**
     * @see org.opencms.setup.xml.A_CmsSetupXmlUpdate#getCommonPath()
     */
    @Override
    protected String getCommonPath() {

        // /opencms/system/flexcache
        StringBuffer xp = new StringBuffer(256);
        xp.append("/").append(CmsConfigurationManager.N_ROOT);
        xp.append("/").append(CmsSystemConfiguration.N_SYSTEM);
        xp.append("/").append(CmsSystemConfiguration.N_FLEXCACHE);
        return xp.toString();
    }

    /**
     * @see org.opencms.setup.xml.A_CmsSetupXmlUpdate#getXPathsToUpdate()
     */
    @Override
    protected List getXPathsToUpdate() {

        if (m_xpaths == null) {
            // "/opencms/system/flexcache/{0}[text()='{1}']";
            StringBuffer xp = new StringBuffer(256);
            xp.append("/").append(CmsConfigurationManager.N_ROOT);
            xp.append("/").append(CmsSystemConfiguration.N_SYSTEM);
            xp.append("/").append(CmsSystemConfiguration.N_FLEXCACHE);
            xp.append("/");

            m_xpaths = new ArrayList();
            m_xpaths.add(xp.toString() + CmsSystemConfiguration.N_MAXCACHEBYTES + "[text()='8000000']");
            m_xpaths.add(xp.toString() + CmsSystemConfiguration.N_AVGCACHEBYTES + "[text()='6000000']");
            m_xpaths.add(xp.toString() + CmsSystemConfiguration.N_MAXENTRYBYTES + "[text()='400000']");
            m_xpaths.add(xp.toString() + CmsSystemConfiguration.N_MAXKEYS + "[text()='2000']");
        }
        return m_xpaths;
    }
}