/*
* Copyright 2002-2006,2009 The Apache Software Foundation.
*
* 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 com.opensymphony.xwork2.validator.validators;
import com.opensymphony.xwork2.validator.ValidationException;
/**
* Base class for range based validators.
*
* @author Jason Carreira
* @author Cameron Braid
*/
public abstract class AbstractRangeValidator extends FieldValidatorSupport {
public void validate(Object object) throws ValidationException {
Object obj = getFieldValue(getFieldName(), object);
Comparable value = (Comparable) obj;
// if there is no value - don't do comparison
// if a value is required, a required validator should be added to the field
if (value == null) {
return;
}
// only check for a minimum value if the min parameter is set
if ((getMinComparatorValue() != null) && (value.compareTo(getMinComparatorValue()) < 0)) {
addFieldError(getFieldName(), object);
}
// only check for a maximum value if the max parameter is set
if ((getMaxComparatorValue() != null) && (value.compareTo(getMaxComparatorValue()) > 0)) {
addFieldError(getFieldName(), object);
}
}
protected abstract Comparable getMaxComparatorValue();
protected abstract Comparable getMinComparatorValue();
}