/*
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Dateiverwaltung - File management in your browser
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Copyright (C) 2017 Ulrich Hilger, http://uhilger.de
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package de.uhilger.filecms.web;
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import de.uhilger.wbx.WbxUtils;
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import java.io.File;
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import java.util.logging.Logger;
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import javax.servlet.ServletContext;
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import javax.servlet.ServletContextEvent;
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import javax.servlet.ServletContextListener;
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/**
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* Initialisieren der Dateiverwaltung
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*/
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public class Initialiser implements ServletContextListener {
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private static final Logger logger = Logger.getLogger(Initialiser.class.getName());
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public static final String FILE_BASE = "filebase";
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public static final String DATENABLAGE = "datenAblage";
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/* ----- ServletContextListener Implementation ----- */
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@Override
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public void contextInitialized(ServletContextEvent sce) {
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// hier kann etwas initialisiert werden
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ServletContext ctx = sce.getServletContext();
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ablageErmitteln(ctx);
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}
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/**
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* Die Dateiablage wird entweder auf einen absoluten Pfad gesetzt,
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* der im Deployment Descriptor hinterlegt werden kann oder, wenn
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* dort nichts eingetragen ist, auf den hart kodierten Pfad
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* der WebBox.
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*
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* @param ctx der ServletContext, in den die Angabe eingetragen wird. Dort
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* ist anschliessend die Angabe unter Initialiser.FILE_BASE abrufbar
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*/
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private void ablageErmitteln(ServletContext ctx) {
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Object o = ctx.getInitParameter(DATENABLAGE);
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try {
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if(o instanceof String) {
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String pfad = o.toString();
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if(pfad.trim().length() > 0) {
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ctx.setAttribute(FILE_BASE, pfad);
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logger.fine("Basis: " + pfad);
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} else {
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ctx.setAttribute(FILE_BASE, WbxUtils.getWbxDataDir(ctx).getAbsolutePath());
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}
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} else {
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ctx.setAttribute(FILE_BASE, WbxUtils.getWbxDataDir(ctx).getAbsolutePath());
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}
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} catch(Exception ex) {
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ctx.setAttribute(FILE_BASE, WbxUtils.getWbxDataDir(ctx).getAbsolutePath());
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}
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}
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@Override
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public void contextDestroyed(ServletContextEvent sce) {
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// hier wird alles wieder aufgeraeumt
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ServletContext ctx = sce.getServletContext();
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ctx.removeAttribute(FILE_BASE);
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}
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}
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