| JSFTagUtil.java |
1 /**
2 * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3 *
4 * The contents of this file are subject to the terms of the Liferay Enterprise
5 * Subscription License ("License"). You may not use this file except in
6 * compliance with the License. You can obtain a copy of the License by
7 * contacting Liferay, Inc. See the License for the specific language governing
8 * permissions and limitations under the License, including but not limited to
9 * distribution rights of the Software.
10 *
11 *
12 *
13 */
14
15 package com.liferay.taglib.faces.util;
16
17 import com.liferay.portal.kernel.util.Validator;
18
19 import javax.faces.application.Application;
20 import javax.faces.context.FacesContext;
21 import javax.faces.el.ValueBinding;
22 import javax.faces.webapp.UIComponentTag;
23
24 /**
25 * <a href="JSFTagUtil.java.html"><b><i>View Source</i></b></a>
26 *
27 * @author Neil Griffin
28 */
29 public class JSFTagUtil {
30
31 public static String eval(String expr) {
32 if (Validator.isNotNull(expr) &&
33 UIComponentTag.isValueReference(expr)) {
34
35 FacesContext facesContext = FacesContext.getCurrentInstance();
36
37 Application application = facesContext.getApplication();
38 ValueBinding valueBinding = application.createValueBinding(expr);
39
40 expr = String.valueOf(valueBinding.getValue(facesContext));
41 }
42
43 return expr;
44 }
45
46 }