| JSFTagUtil.java |
1 /**
2 * Copyright (c) 2000-2009 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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
12 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
13 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
14 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
15 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
17 * SOFTWARE.
18 */
19
20 package com.liferay.taglib.faces.util;
21
22 import com.liferay.portal.kernel.util.Validator;
23
24 import javax.faces.application.Application;
25 import javax.faces.context.FacesContext;
26 import javax.faces.el.ValueBinding;
27 import javax.faces.webapp.UIComponentTag;
28
29 /**
30 * <a href="JSFTagUtil.java.html"><b><i>View Source</i></b></a>
31 *
32 * @author Neil Griffin
33 *
34 */
35 public class JSFTagUtil {
36
37 public static String eval(String expr) {
38 if (Validator.isNotNull(expr) &&
39 UIComponentTag.isValueReference(expr)) {
40
41 FacesContext facesContext = FacesContext.getCurrentInstance();
42
43 Application application = facesContext.getApplication();
44 ValueBinding valueBinding = application.createValueBinding(expr);
45
46 expr = String.valueOf(valueBinding.getValue(facesContext));
47 }
48
49 return expr;
50 }
51
52 }