/*
* Created on 26/mar/2013
* Copyright 2011 by Andrea Vacondio (andrea.vacondio@gmail.com).
*
* This file is part of the Sejda source code
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sejda.model.validation.validator;
import java.math.BigDecimal;
import java.math.BigInteger;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import org.sejda.model.validation.constraint.Positive;
/**
* Validates a number that should be positive.
*
* @author Andrea Vacondio
*
*/
public class PositiveNumberValidator implements ConstraintValidator<Positive, Number> {
@Override
public void initialize(Positive minValue) {
// on purpose
}
@Override
public boolean isValid(Number value, ConstraintValidatorContext constraintValidatorContext) {
if (value == null) {
return true;
}
if (value instanceof BigDecimal) {
return ((BigDecimal) value).compareTo(BigDecimal.ZERO) == 1;
} else if (value instanceof BigInteger) {
return ((BigInteger) value).compareTo(BigInteger.ZERO) == 1;
} else {
return value.floatValue() > 0;
}
}
}