com.infinities.keystone4j.KeystonePreconditions.java Source code

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Here is the source code for com.infinities.keystone4j.KeystonePreconditions.java

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/*******************************************************************************
 * # Copyright 2015 InfinitiesSoft Solutions 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 com.infinities.keystone4j;

import java.text.MessageFormat;

import javax.validation.ValidationException;
import javax.ws.rs.BadRequestException;

import com.google.common.base.Strings;
import com.infinities.keystone4j.model.BaseEntity;

public class KeystonePreconditions {

    private static final String REQUIRE_ATTRIBUTE = "{0} field is required and cannot be empty";
    private static final String REQUIRE_MATCHING_ID = "Cannot change ID";
    private static final String REQUIRE_DOMAIN_XOR_PROJECT = "Specify a domain or project, not both";
    private static final String REQUIRE_USER_XOR_GROUP = "Specify a user or group, not both";

    public static void requireAttribute(String attr, String value) {
        if (Strings.isNullOrEmpty(value)) {
            String message = MessageFormat.format(REQUIRE_ATTRIBUTE, attr);
            throw new ValidationException(message, null);
        }
    }

    public static void requireMatchingId(String id, BaseEntity entity) {
        if (!Strings.isNullOrEmpty(entity.getId()) && !id.equals(entity.getId())) {
            throw new BadRequestException(REQUIRE_MATCHING_ID);

        }
    }

    public static void requireDomain(String domainid) {
        if (Strings.isNullOrEmpty(domainid)) {
            throw new BadRequestException(REQUIRE_DOMAIN_XOR_PROJECT);
        }
    }

    public static void requireUser(String userid) {
        if (Strings.isNullOrEmpty(userid)) {
            throw new BadRequestException(REQUIRE_USER_XOR_GROUP);
        }
    }

    public static void requireProject(String projectid) {
        if (Strings.isNullOrEmpty(projectid)) {
            throw new BadRequestException(REQUIRE_DOMAIN_XOR_PROJECT);
        }
    }

    public static void requireGroup(String groupid) {
        if (Strings.isNullOrEmpty(groupid)) {
            throw new BadRequestException(REQUIRE_USER_XOR_GROUP);
        }
    }

}