| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| GenericMinMaxValidatorTag |
|
| 0.0;0 |
| 1 | /* | |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one | |
| 3 | * or more contributor license agreements. See the NOTICE file | |
| 4 | * distributed with this work for additional information | |
| 5 | * regarding copyright ownership. The ASF licenses this file | |
| 6 | * to you under the Apache License, Version 2.0 (the | |
| 7 | * "License"); you may not use this file except in compliance | |
| 8 | * with the License. You may obtain a copy of the License at | |
| 9 | * | |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 11 | * | |
| 12 | * Unless required by applicable law or agreed to in writing, | |
| 13 | * software distributed under the License is distributed on an | |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
| 15 | * KIND, either express or implied. See the License for the | |
| 16 | * specific language governing permissions and limitations | |
| 17 | * under the License. | |
| 18 | */ | |
| 19 | package org.apache.myfaces.taglib.core; | |
| 20 | ||
| 21 | import javax.el.ELContext; | |
| 22 | import javax.el.ValueExpression; | |
| 23 | import javax.faces.context.FacesContext; | |
| 24 | import javax.faces.validator.Validator; | |
| 25 | import javax.servlet.jsp.JspException; | |
| 26 | ||
| 27 | /** | |
| 28 | * This is the base Tag for all ValidatorTags which got a minimum and a maimum attribute. | |
| 29 | * | |
| 30 | * @author Andreas Berger (latest modification by $Author: skitching $) | |
| 31 | * @version $Revision: 684465 $ $Date: 2008-08-10 06:38:21 -0500 (Sun, 10 Aug 2008) $ | |
| 32 | * @since 1.2 | |
| 33 | */ | |
| 34 | 0 | public abstract class GenericMinMaxValidatorTag<T> |
| 35 | extends ValidatorTag | |
| 36 | { | |
| 37 | protected ValueExpression _minimum; | |
| 38 | protected ValueExpression _maximum; | |
| 39 | 0 | protected T _min = null; |
| 40 | 0 | protected T _max = null; |
| 41 | ||
| 42 | public void setMinimum(ValueExpression minimum) | |
| 43 | { | |
| 44 | 0 | _minimum = minimum; |
| 45 | 0 | } |
| 46 | ||
| 47 | public void setMaximum(ValueExpression maximum) | |
| 48 | { | |
| 49 | 0 | _maximum = maximum; |
| 50 | 0 | } |
| 51 | ||
| 52 | public void release() | |
| 53 | { | |
| 54 | 0 | _minimum = null; |
| 55 | 0 | _maximum = null; |
| 56 | 0 | _min = null; |
| 57 | 0 | _max = null; |
| 58 | 0 | } |
| 59 | ||
| 60 | /** | |
| 61 | * This method returns the Validator, you have to cast it to the correct type | |
| 62 | * and apply the min and max values. | |
| 63 | * | |
| 64 | * @return | |
| 65 | * @throws JspException | |
| 66 | */ | |
| 67 | protected Validator createValidator() throws JspException | |
| 68 | { | |
| 69 | 0 | if (null == _minimum && null == _maximum){ |
| 70 | 0 | throw new JspException("a minimum and / or a maximum have to be specified"); |
| 71 | } | |
| 72 | 0 | ELContext elContext = FacesContext.getCurrentInstance().getELContext(); |
| 73 | 0 | if (null != _minimum){ |
| 74 | 0 | _min = getValue(_minimum.getValue(elContext)); |
| 75 | } | |
| 76 | 0 | if (null != _maximum){ |
| 77 | 0 | _max = getValue(_maximum.getValue(elContext)); |
| 78 | } | |
| 79 | 0 | if (null != _minimum && null != _maximum){ |
| 80 | 0 | if (!isMinLTMax()){ |
| 81 | 0 | throw new JspException("maximum limit must be greater than the minimum limit"); |
| 82 | } | |
| 83 | } | |
| 84 | 0 | return super.createValidator(); |
| 85 | } | |
| 86 | ||
| 87 | /** | |
| 88 | * @return true if min is lower than max | |
| 89 | */ | |
| 90 | protected abstract boolean isMinLTMax(); | |
| 91 | ||
| 92 | /** | |
| 93 | * Wrapper method. | |
| 94 | * @param value | |
| 95 | * @return | |
| 96 | */ | |
| 97 | protected abstract T getValue(Object value); | |
| 98 | } |