org.hibernate.validator.internal.constraintvalidators.LengthValidator Maven / Gradle / Ivy
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*
* 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.hibernate.validator.internal.constraintvalidators;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import org.hibernate.validator.constraints.Length;
import org.hibernate.validator.internal.util.logging.Log;
import org.hibernate.validator.internal.util.logging.LoggerFactory;
/**
* Check that the character sequence length is between min and max.
*
* @author Emmanuel Bernard
* @author Gavin King
*/
public class LengthValidator implements ConstraintValidator {
private static final Log log = LoggerFactory.make();
private int min;
private int max;
public void initialize(Length parameters) {
min = parameters.min();
max = parameters.max();
validateParameters();
}
public boolean isValid(CharSequence value, ConstraintValidatorContext constraintValidatorContext) {
if ( value == null ) {
return true;
}
int length = value.length();
return length >= min && length <= max;
}
private void validateParameters() {
if ( min < 0 ) {
throw log.getMinCannotBeNegativeException();
}
if ( max < 0 ) {
throw log.getMaxCannotBeNegativeException();
}
if ( max < min ) {
throw log.getLengthCannotBeNegativeException();
}
}
}