NullValidator.java
/*
* Copyright (c) 2019, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. 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.synapse.commons.json.jsonprocessor.validators;
import com.google.gson.JsonObject;
import org.apache.synapse.commons.json.jsonprocessor.exceptions.ValidatorException;
/**
* This class validate null values against a given schema.
*/
public class NullValidator {
// use without instantiating.
private NullValidator() {
}
/**
* Validate a null input against schema.
*
* @param inputObject input schema.
* @param value null value.
* @throws ValidatorException exception occurs in validation.
*/
public static void validateNull(JsonObject inputObject, String value) throws ValidatorException {
if (value != null && !(value.equals("null") || value.equals("\"null\""))) {
throw new ValidatorException("Expected a null but found a value. " +
"Received not null input" + value + " to be validated with : " + inputObject
.toString());
}
}
}