org.hibernate.validator.internal.constraintvalidators.hv.CodePointLengthValidator Maven / Gradle / Ivy
/*
* 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.hv;
import org.hibernate.validator.constraints.CodePointLength;
import org.hibernate.validator.internal.util.logging.Log;
import org.hibernate.validator.internal.util.logging.LoggerFactory;
import java.lang.invoke.MethodHandles;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
/**
* Check that the code point length of a character sequence is between min and max.
*
* @author Kazuki Shimizu
* @version 6.0.3
*/
public class CodePointLengthValidator implements ConstraintValidator {
private static final Log LOG = LoggerFactory.make( MethodHandles.lookup() );
private int min;
private int max;
private CodePointLength.NormalizationStrategy normalizationStrategy;
@Override
public void initialize(CodePointLength parameters) {
min = parameters.min();
max = parameters.max();
normalizationStrategy = parameters.normalizationStrategy();
validateParameters();
}
@Override
public boolean isValid(CharSequence value, ConstraintValidatorContext constraintValidatorContext) {
if ( value == null ) {
return true;
}
String stringValue = normalizationStrategy.normalize( value ).toString();
int length = stringValue.codePointCount( 0, stringValue.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();
}
}
}