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 }