org.exolab.castor.xml.validators.IdRefValidator Maven / Gradle / Ivy
/*
* Copyright 2006 Werner Guttmann
*
* 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.exolab.castor.xml.validators;
import org.exolab.castor.mapping.ClassDescriptor;
import org.exolab.castor.mapping.FieldDescriptor;
import org.exolab.castor.mapping.FieldHandler;
import org.exolab.castor.xml.ClassDescriptorResolver;
import org.exolab.castor.xml.TypeValidator;
import org.exolab.castor.xml.ValidationContext;
import org.exolab.castor.xml.ValidationException;
/**
* The IDREF Validation class.
*
* @author Werner Guttman
* @version $Revision: 0000 $ $Date: $
*/
public class IdRefValidator implements TypeValidator {
/**
* Creates a new IdRefValidator with no restrictions.
*/
public IdRefValidator() {
super();
} //-- IdValidator
/**
* Validates the given Object.
*
* @param object the Object to validate
* @param context the ValidationContext
* @throws ValidationException if the object fails validation.
*/
public void validate(final Object object, final ValidationContext context)
throws ValidationException {
// we need a target Object
if (object == null) {
String err = "The object associated with IDREF \"" + object + "\" is null!";
throw new ValidationException(err);
}
// get the id of the target object
String id = null;
try {
ClassDescriptorResolver classDescriptorResolver = context.getClassDescriptorResolver();
ClassDescriptor classDescriptor = classDescriptorResolver.resolve(object.getClass());
FieldDescriptor fieldDescriptor = classDescriptor.getIdentity();
FieldHandler fieldHandler = fieldDescriptor.getHandler();
id = (String) fieldHandler.getValue(object);
} catch (Exception e) {
String err = "The object associated with IDREF \"" + object
+ "\" of type " + object.getClass() + " has no ID!";
throw new ValidationException(err);
}
if (id == null) {
String err = "The object associated with IDREF \"" + object + "\" has no ID!";
throw new ValidationException(err);
}
// check if referenced id exists, otherwise put it into "currently unresolved" queue
context.checkIdRef(id);
// validate(value, context);
} //-- validate
}