org.kairosdb.util.Validator.java Source code

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Here is the source code for org.kairosdb.util.Validator.java

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/*
 * Copyright 2013 Proofpoint Inc.
 *
 *    Licensed 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.kairosdb.util;

import com.google.gson.JsonElement;
import org.kairosdb.core.http.rest.json.ValidationErrors;

public class Validator {
    private Validator() {
    }

    public static void validateCharacterSet(String name, String value) throws ValidationException {
        ValidationErrors errors = new ValidationErrors();
        if (!isValidateCharacterSet(errors, name, value))
            throw new ValidationException(errors.getFirstError());
    }

    public static void validateNotNullOrEmpty(String name, String value) throws ValidationException {
        ValidationErrors errors = new ValidationErrors();
        if (!isNotNullOrEmpty(errors, name, value))
            throw new ValidationException(errors.getFirstError());
    }

    public static void validateMin(String name, long value, long minValue) throws ValidationException {
        ValidationErrors errors = new ValidationErrors();
        if (!isGreaterThanOrEqualTo(errors, name, value, minValue))
            throw new ValidationException(errors.getFirstError());
    }

    public static boolean isValidateCharacterSet(ValidationErrors validationErrors, Object name, String value) {
        if (value == null || value.isEmpty() || !CharacterSet.isValidTagNameValue(value)) {
            validationErrors.addErrorMessage(name + " may contain any character except colon ':', and equals '='.");
            return false;
        }
        return true;
    }

    public static boolean isNotNullOrEmpty(ValidationErrors validationErrors, Object name, String value) {
        if (value == null) {
            validationErrors.addErrorMessage(name + " may not be null.");
            return false;
        }
        if (value.isEmpty()) {
            validationErrors.addErrorMessage(name + " may not be empty.");
            return false;
        }

        return true;
    }

    public static boolean isNotNull(ValidationErrors validationErrors, Object name, Object value) {
        if (value == null) {
            validationErrors.addErrorMessage(name + " may not be null.");
            return false;
        }
        return true;
    }

    public static boolean isNotNullOrEmpty(ValidationErrors validationErrors, Object name, JsonElement value) {
        if (value == null) {
            validationErrors.addErrorMessage(name + " may not be null.");
            return false;
        }
        if (value.isJsonNull()) {
            validationErrors.addErrorMessage(name + " may not be empty.");
            return false;
        }
        if (value.isJsonArray() && value.getAsJsonArray().size() < 1) {
            validationErrors.addErrorMessage(name + " may not be an empty array.");
            return false;
        }
        if (!value.isJsonObject() && value.getAsString().isEmpty()) {
            validationErrors.addErrorMessage(name + " may not be empty.");
            return false;
        }

        return true;
    }

    public static boolean isGreaterThanOrEqualTo(ValidationErrors validationErrors, Object name, long value,
            long minValue) {
        if (value < minValue) {
            validationErrors.addErrorMessage(name + " must be greater than or equal to " + minValue + ".");
            return false;
        }
        return true;
    }

}