| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.bval.constraints; |
| |
| import java.lang.annotation.Annotation; |
| import java.util.function.IntPredicate; |
| |
| import javax.validation.ConstraintValidator; |
| import javax.validation.ConstraintValidatorContext; |
| import javax.validation.constraints.Negative; |
| import javax.validation.constraints.NegativeOrZero; |
| import javax.validation.constraints.Positive; |
| import javax.validation.constraints.PositiveOrZero; |
| |
| import org.apache.bval.util.Validate; |
| |
| /** |
| * Description: validate positive/negative number values. |
| */ |
| public abstract class NumberSignValidator<A extends Annotation> implements ConstraintValidator<A, Number> { |
| public static class ForPositive extends NumberSignValidator<Positive> { |
| public static class OrZero extends NumberSignValidator<PositiveOrZero> { |
| public OrZero() { |
| super(n -> n >= 0); |
| } |
| } |
| |
| public ForPositive() { |
| super(n -> n > 0); |
| } |
| } |
| |
| public static class ForNegative extends NumberSignValidator<Negative> { |
| public static class OrZero extends NumberSignValidator<NegativeOrZero> { |
| public OrZero() { |
| super(n -> n <= 0); |
| } |
| } |
| |
| public ForNegative() { |
| super(n -> n < 0); |
| } |
| } |
| |
| private final IntPredicate comparisonTest; |
| |
| protected NumberSignValidator(IntPredicate comparisonTest) { |
| super(); |
| this.comparisonTest = Validate.notNull(comparisonTest); |
| } |
| |
| @Override |
| public boolean isValid(Number value, ConstraintValidatorContext context) { |
| if (value == null) { |
| return true; |
| } |
| final double d = value.doubleValue(); |
| if (Double.isNaN(d)) { |
| return false; |
| } |
| return comparisonTest.test(Double.compare(d, 0.0)); |
| } |
| } |