2 * Copyright (C) 2016 Cho-Time GmbH
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 package org.mxchange.jcoreee.utils;
19 import javax.faces.context.ExternalContext;
20 import javax.faces.context.FacesContext;
23 * An utilities class for JSF
25 * @author Roland Haeder<rhaeder@cho-time.de>
27 public class FacesUtils {
30 * Generates a "base URL" for for example mail templates. For JSF
31 * pages/templates this is not needed.
35 public static String generateBaseUrl () {
36 // Get external context
37 ExternalContext context = FacesContext.getCurrentInstance().getExternalContext();
39 // Get request scheme and such ...
40 String scheme = context.getRequestScheme();
41 String hostName = context.getRequestServerName();
42 String path = context.getRequestServletPath();
47 throw new NullPointerException("context.requestScheme is null"); //NOI18N
48 } else if (null == hostName) {
49 // And throw again ...
50 throw new NullPointerException("context.requestServerName is null"); //NOI18N
51 } else if (null == path) {
52 // Set to empty string
57 String baseUrl = String.format("%s://%s%s", scheme, hostName, path); //NOI18N
64 * No instances from this class are required
66 private FacesUtils () {
68 if (FacesContext.getCurrentInstance() == null) {
69 // Okay, don't allow any usage
70 throw new NullPointerException("Cannot access FacesContext, maybe you have tried to use this class from an EJB?"); //NOI18N