org.kawanfw.sql.tomcat.SystemPropUpdater.java Source code

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Here is the source code for org.kawanfw.sql.tomcat.SystemPropUpdater.java

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/*
 * This file is part of AceQL. 
 * AceQL: Remote JDBC access over HTTP.                                     
 * Copyright (C) 2015,  KawanSoft SAS
 * (http://www.kawansoft.com). All rights reserved.                                
 *                                                                               
 * AceQL 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.            
 *                                                                               
 * AceQL 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
 *
 * Any modifications to this file must keep this entire header
 * intact.
 */
package org.kawanfw.sql.tomcat;

import java.util.Enumeration;
import java.util.Properties;

import org.apache.commons.lang3.StringUtils;
import org.kawanfw.commons.util.FrameworkDebug;
import org.kawanfw.sql.util.SqlTag;

/**
 * @author Nicolas de Pomereu
 * set or clear System Properties defined in properties file.
 */
public class SystemPropUpdater {

    private static boolean DEBUG = FrameworkDebug.isSet(SystemPropUpdater.class);

    private Properties properties = null;

    public SystemPropUpdater(Properties properties) {
        this.properties = properties;
    }

    public void update() {
        // Do we have to set special values to the Connector?
        Enumeration<?> enumeration = properties.propertyNames();

        if (enumeration.hasMoreElements()) {
            System.out.println(SqlTag.SQL_PRODUCT_START + " Setting System Properties:");
        }

        while (enumeration.hasMoreElements()) {
            String property = (String) enumeration.nextElement();

            if (property.startsWith("systemSetProperty.")) {

                String theValue = properties.getProperty(property);

                String systemProperty = StringUtils.substringAfter(property, ".");

                debug("property      : " + property);
                debug("systemProperty: " + systemProperty);

                if (systemProperty.equals("compression")) {
                    System.out.println(SqlTag.SQL_PRODUCT_START + "  -> Tomcat " + systemProperty
                            + " property not used in AceQL. See User Documentation for how to zip ResultSet.");
                } else {
                    if (theValue != null && !theValue.isEmpty()) {

                        theValue = theValue.trim();

                        System.out.println(SqlTag.SQL_PRODUCT_START + "  -> " + systemProperty + " = " + theValue);
                        System.setProperty(systemProperty, theValue);
                    }
                }

            }

            if (property.equals("systemClearProperty")) {

                String theValue = properties.getProperty(property);

                if (theValue != null && !theValue.isEmpty()) {

                    theValue = theValue.trim();

                    System.out.println(SqlTag.SQL_PRODUCT_START + "  -> " + theValue + " clear ");
                    System.clearProperty(theValue);
                }
            }

        }
    }

    /**
     * debug
     */
    private static void debug(String s) {
        if (DEBUG) {
            System.out.println(s);
        }
    }

}