/*
* Copyright 2004-2005 Graeme Rocher
*
* Licensed 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.grails.validation;
import grails.util.GrailsStringUtils;
import grails.validation.AbstractConstraint;
import grails.validation.ConstrainedProperty;
import org.apache.commons.validator.routines.EmailValidator;
import org.springframework.validation.Errors;
/**
* Validates an email address.
*
* @author Graeme Rocher
* @since 0.4
*/
public class EmailConstraint extends AbstractConstraint {
private boolean email;
/* (non-Javadoc)
* @see org.grails.validation.Constraint#supports(java.lang.Class)
*/
@SuppressWarnings("rawtypes")
public boolean supports(Class type) {
return type != null && String.class.isAssignableFrom(type);
}
/* (non-Javadoc)
* @see org.grails.validation.ConstrainedProperty.AbstractConstraint#setParameter(java.lang.Object)
*/
@Override
public void setParameter(Object constraintParameter) {
if (!(constraintParameter instanceof Boolean)) {
throw new IllegalArgumentException("Parameter for constraint [" +
ConstrainedProperty.EMAIL_CONSTRAINT + "] of property [" +
constraintPropertyName + "] of class [" + constraintOwningClass +
"] must be a boolean value");
}
email = (Boolean)constraintParameter;
super.setParameter(constraintParameter);
}
public String getName() {
return ConstrainedProperty.EMAIL_CONSTRAINT;
}
@Override
protected void processValidate(Object target, Object propertyValue, Errors errors) {
if (!email) {
return;
}
EmailValidator emailValidator = EmailValidator.getInstance();
Object[] args = new Object[] { constraintPropertyName, constraintOwningClass, propertyValue };
String value = propertyValue.toString();
if (GrailsStringUtils.isBlank(value)) {
return;
}
if (!emailValidator.isValid(value)) {
rejectValue(target, errors, ConstrainedProperty.DEFAULT_INVALID_EMAIL_MESSAGE_CODE,
ConstrainedProperty.EMAIL_CONSTRAINT + ConstrainedProperty.INVALID_SUFFIX, args);
}
}
}