/*
* 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.validation.AbstractConstraint;
import grails.validation.ConstrainedProperty;
import java.util.List;
import org.grails.validation.routines.RegexValidator;
import org.grails.validation.routines.UrlValidator;
import org.springframework.validation.Errors;
/**
* Validates a url.
*
* @author Graeme Rocher
* @since 0.4
*/
public class UrlConstraint extends AbstractConstraint {
private boolean url;
private UrlValidator validator;
/* (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) {
RegexValidator domainValidator = null;
if (constraintParameter instanceof Boolean) {
url = (Boolean)constraintParameter;
}
else if (constraintParameter instanceof String) {
url = true;
domainValidator = new RegexValidator((String) constraintParameter);
}
else if (constraintParameter instanceof List<?>) {
url = true;
List<?> regexpList = (List<?>) constraintParameter;
domainValidator = new RegexValidator(regexpList.toArray(new String[regexpList.size()]));
}
else {
throw new IllegalArgumentException("Parameter for constraint [" + ConstrainedProperty.URL_CONSTRAINT +
"] of property [" + constraintPropertyName + "] of class [" +
constraintOwningClass + "] must be a boolean, string, or list value");
}
validator = new UrlValidator(domainValidator,
UrlValidator.ALLOW_ALL_SCHEMES + UrlValidator.ALLOW_2_SLASHES);
super.setParameter(constraintParameter);
}
public String getName() {
return ConstrainedProperty.URL_CONSTRAINT;
}
@Override
protected void processValidate(Object target, Object propertyValue, Errors errors) {
if (!url) {
return;
}
if (!validator.isValid(propertyValue.toString())) {
Object[] args = new Object[]{constraintPropertyName, constraintOwningClass, propertyValue};
rejectValue(target, errors, ConstrainedProperty.DEFAULT_INVALID_URL_MESSAGE_CODE,
ConstrainedProperty.URL_CONSTRAINT + ConstrainedProperty.INVALID_SUFFIX, args);
}
}
}