src/commons/org/codehaus/groovy/grails/validation/CreditCardConstraint.java

   1 /* Copyright 2004-2005 Graeme Rocher
   2  *
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at
   6  *
   7  *      http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15 package org.codehaus.groovy.grails.validation;
  16
  17 import org.springframework.validation.Errors;
  18 import org.apache.commons.validator.CreditCardValidator;
  19
  20 /**
  21  * A constraint class that validates a credit card number
  22  *
  23  * @author Graeme Rocher
  24  * @since 0.4
  25  *        <p/>
  26  *        Created: Jan 19, 2007
  27  *        Time: 8:12:04 AM
  28  */
  29 class CreditCardConstraint extends AbstractConstraint {
  30     private boolean creditCard;
  31
  32
  33     protected void processValidate(Object target, Object propertyValue, Errors errors) {
  34         if(creditCard) {
  35             CreditCardValidator validator = new CreditCardValidator();
  36
  37             if(!validator.isValid(propertyValue.toString())  ) {
  38                 Object[] args = new Object[] { constraintPropertyName, constraintOwningClass, propertyValue };
  39                 super.rejectValue(target,errors,ConstrainedProperty.DEFAULT_INVALID_CREDIT_CARD_MESSAGE_CODE,ConstrainedProperty.CREDIT_CARD_CONSTRAINT + ConstrainedProperty.INVALID_SUFFIX,args);
  40             }
  41         }
  42     }
  43
  44     public void setParameter(Object constraintParameter) {
  45         if(!(constraintParameter instanceof Boolean))
  46             throw new IllegalArgumentException("Parameter for constraint ["+ConstrainedProperty.CREDIT_CARD_CONSTRAINT+"] of property ["+constraintPropertyName+"] of class ["+constraintOwningClass+"] must be a boolean value");
  47
  48         this.creditCard = ((Boolean)constraintParameter).booleanValue();
  49         super.setParameter(constraintParameter);
  50     }
  51
  52     public String getName() {
  53         return ConstrainedProperty.CREDIT_CARD_CONSTRAINT;
  54     }
  55
  56     public boolean supports(Class type) {
  57         return type != null && String.class.isAssignableFrom(type);
  58
  59     }
  60 }