org.hibernate.validator.internal.constraintvalidators.hv.NotBlankValidator 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 javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import org.hibernate.validator.constraints.NotBlank;
/**
* Check that a character sequence's (e.g. string) trimmed length is not empty.
*
* @author Hardy Ferentschik
*/
@SuppressWarnings("deprecation")
public class NotBlankValidator implements ConstraintValidator {
/**
* Checks that the trimmed string is not empty.
*
* @param charSequence the character sequence to validate
* @param constraintValidatorContext context in which the constraint is evaluated
* @return returns {@code true} if the string is {@code null} or the length of the trimmed
* {@code charSequence} is strictly superior to 0, {@code false} otherwise
*/
@Override
public boolean isValid(CharSequence charSequence, ConstraintValidatorContext constraintValidatorContext) {
if ( charSequence == null ) {
return true;
}
return charSequence.toString().trim().length() > 0;
}
}