/**
* 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.model.validation.validators;
import org.apache.commons.lang.math.IntRange;
import org.apache.commons.lang.math.Range;
import org.jtalks.jcommune.model.entity.PollItem;
import org.jtalks.jcommune.model.validation.annotations.PollItemsSize;
import org.springframework.util.CollectionUtils;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.util.List;
/**
* It validates the size of the list of poll items.
*
* @author Anuar_Nurmakanov
*
*/
public class PollItemsSizeValidator implements ConstraintValidator<PollItemsSize, List<PollItem>> {
private int minSize;
private int maxSize;
/**
* {@inheritDoc}
*/
@Override
public void initialize(PollItemsSize constraintAnnotation) {
this.minSize = constraintAnnotation.min();
this.maxSize = constraintAnnotation.max();
}
/**
* {@inheritDoc}
*/
@Override
public boolean isValid(List<PollItem> pollItems, ConstraintValidatorContext context) {
if (!CollectionUtils.isEmpty(pollItems)) {
Range range = new IntRange(minSize, maxSize);
return range.containsInteger(pollItems.size());
}
return true;
}
}