/*
* Hibernate Validator, declare and validate application constraints
*
* License: Apache License, Version 2.0
* See the license.txt file in the root directory or <http://www.apache.org/licenses/LICENSE-2.0>.
*/
package org.hibernate.validator.internal.constraintvalidators.bv.size;
import java.lang.invoke.MethodHandles;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import javax.validation.constraints.Size;
import org.hibernate.validator.internal.util.logging.Log;
import org.hibernate.validator.internal.util.logging.LoggerFactory;
Check that the length of an array is between min and max
Author: Hardy Ferentschik
/**
* Check that the length of an array is between <i>min</i> and <i>max</i>
*
* @author Hardy Ferentschik
*/
public class SizeValidatorForArray implements ConstraintValidator<Size, Object[]> {
private static final Log LOG = LoggerFactory.make( MethodHandles.lookup() );
private int min;
private int max;
@Override
public void initialize(Size parameters) {
min = parameters.min();
max = parameters.max();
validateParameters();
}
Checks the number of entries in an array.
Params: - array – The array to validate.
- constraintValidatorContext – context in which the constraint is evaluated.
Returns: Returns true
if the array is null
or the number of entries in array
is between the specified min
and max
values (inclusive), false
otherwise.
/**
* Checks the number of entries in an array.
*
* @param array The array to validate.
* @param constraintValidatorContext context in which the constraint is evaluated.
*
* @return Returns {@code true} if the array is {@code null} or the number of entries in
* {@code array} is between the specified {@code min} and {@code max} values (inclusive),
* {@code false} otherwise.
*/
@Override
public boolean isValid(Object[] array, ConstraintValidatorContext constraintValidatorContext) {
if ( array == null ) {
return true;
}
return array.length >= min && array.length <= max;
}
private void validateParameters() {
if ( min < 0 ) {
throw LOG.getMinCannotBeNegativeException();
}
if ( max < 0 ) {
throw LOG.getMaxCannotBeNegativeException();
}
if ( max < min ) {
throw LOG.getLengthCannotBeNegativeException();
}
}
}