/**
* Copyright (C) 2011 JTalks.org Team
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.jtalks.jcommune.web.validation.validators;
import org.jtalks.jcommune.web.validation.annotations.NullableNotBlank;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
/**
* Check that a string's trimmed length is not empty.
*
* @author Andrey Pogorelov
*/
public class NullableNotBlankValidator implements ConstraintValidator<NullableNotBlank, String> {
/**
* {@inheritDoc}
*/
@Override
public void initialize(NullableNotBlank annotation) {
}
/**
* Checks that the trimmed string is not empty.
*
* @param s The string to validate.
* @param constraintValidatorContext context in which the constraint is evaluated.
* @return Returns <code>true</code> if the string is <code>null</code> or the length of <code>s</code> between
* the specified
* <code>min</code> and <code>max</code> values (inclusive), <code>false</code> otherwise.
*/
public boolean isValid(String s, ConstraintValidatorContext constraintValidatorContext) {
if (s == null) {
return true;
}
return s.trim().length() > 0;
}
}