org.hibernate.validator.internal.constraintvalidators.bv.size.SizeValidatorForArray Maven / Gradle / Ivy
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JSR 380's RI, Hibernate Validator version ${hibernate-validator.version} and its dependencies repackaged as OSGi bundle
/*
* Hibernate Validator, declare and validate application constraints
*
* License: Apache License, Version 2.0
* See the license.txt file in the root directory or .
*/
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
*/
public class SizeValidatorForArray implements ConstraintValidator {
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.
*
* @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();
}
}
}