| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.myfaces.taglib.core; |
| |
| import javax.el.ELContext; |
| import javax.el.ValueExpression; |
| import javax.faces.application.Application; |
| import javax.faces.context.FacesContext; |
| import javax.faces.validator.Validator; |
| import javax.faces.webapp.ValidatorELTag; |
| import javax.servlet.jsp.JspException; |
| |
| /** |
| * Basic Validator implementation. |
| * |
| * @author Andreas Berger (latest modification by $Author$) |
| * @version $Revision$ $Date$ |
| * @since 1.2 |
| */ |
| public class ValidatorTag extends ValidatorELTag |
| { |
| private ValueExpression _validatorId; |
| private ValueExpression _binding; |
| private String _validatorIdString = null; |
| |
| public void setValidatorId(ValueExpression validatorId) |
| { |
| _validatorId = validatorId; |
| } |
| |
| public void setBinding(ValueExpression binding) |
| { |
| _binding = binding; |
| } |
| |
| /** |
| * Use this method to specify the validatorId programmatically. |
| * |
| * @param validatorIdString |
| */ |
| public void setValidatorIdString(String validatorIdString) |
| { |
| _validatorIdString = validatorIdString; |
| } |
| |
| @Override |
| public void release() |
| { |
| super.release(); |
| _validatorId = null; |
| _binding = null; |
| _validatorIdString = null; |
| } |
| |
| @Override |
| protected Validator createValidator() throws javax.servlet.jsp.JspException |
| { |
| FacesContext facesContext = FacesContext.getCurrentInstance(); |
| ELContext elContext = facesContext.getELContext(); |
| if (null != _binding) |
| { |
| Object validator; |
| try |
| { |
| validator = _binding.getValue(elContext); |
| } |
| catch (Exception e) |
| { |
| throw new JspException("Error while creating the Validator", e); |
| } |
| if (validator instanceof Validator) |
| { |
| return (Validator)validator; |
| } |
| } |
| Application application = facesContext.getApplication(); |
| Validator validator = null; |
| try |
| { |
| // first check if an ValidatorId was set by a method |
| if (null != _validatorIdString) |
| { |
| validator = application.createValidator(_validatorIdString); |
| } |
| else if (null != _validatorId) |
| { |
| String validatorId = (String)_validatorId.getValue(elContext); |
| validator = application.createValidator(validatorId); |
| } |
| } |
| catch (Exception e) |
| { |
| throw new JspException("Error while creating the Validator", e); |
| } |
| |
| if (null != validator) |
| { |
| if (null != _binding) |
| { |
| _binding.setValue(elContext, validator); |
| } |
| return validator; |
| } |
| throw new JspException("validatorId and/or binding must be specified"); |
| } |
| |
| } |