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Added resource and a couple of tests
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backend/src/main/java/org/hawkular/accounts/backend/boundary/ResourceService.java
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| /* | ||
| * Copyright 2015 Red Hat, Inc. and/or its affiliates | ||
| * and other contributors as indicated by the @author tags. | ||
| * | ||
| * 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.hawkular.accounts.backend.boundary; | ||
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| import java.util.List; | ||
| import javax.ejb.Stateless; | ||
| import javax.inject.Inject; | ||
| import javax.persistence.EntityManager; | ||
| import javax.persistence.criteria.CriteriaBuilder; | ||
| import javax.persistence.criteria.CriteriaQuery; | ||
| import javax.persistence.criteria.Root; | ||
| import org.hawkular.accounts.backend.entity.Owner; | ||
| import org.hawkular.accounts.backend.entity.Resource; | ||
| import org.hawkular.accounts.backend.entity.Resource_; | ||
| import org.keycloak.KeycloakPrincipal; | ||
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| /** | ||
| * | ||
| * @author Juraci Paixão Kröhling <juraci at kroehling.de> | ||
| */ | ||
| @Stateless | ||
| public class ResourceService { | ||
| @Inject | ||
| EntityManager em; | ||
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| @Inject | ||
| UserService userService; | ||
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| /** | ||
| * Retrieves a {@link Resource} based on its ID. | ||
| * | ||
| * @param id the resource's ID | ||
| * @return the existing {@link Resource} or null if the resource doesn't exists. | ||
| */ | ||
| public Resource getById(String id) { | ||
| CriteriaBuilder builder = em.getCriteriaBuilder(); | ||
| CriteriaQuery<Resource> query = builder.createQuery(Resource.class); | ||
| Root<Resource> root = query.from(Resource.class); | ||
| query.select(root); | ||
| query.where(builder.equal(root.get(Resource_.id), id)); | ||
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| List<Resource> results = em.createQuery(query).getResultList(); | ||
| if (results.size() == 1) { | ||
| return results.get(0); | ||
| } | ||
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| if (results.size() > 1) { | ||
| throw new IllegalStateException("More than one resource found for ID " + id); | ||
| } | ||
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| return null; | ||
| } | ||
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| /** | ||
| * Retrieves a {@link Resource} based on its ID or creates a new {@link Resource} if it doesn't exists. | ||
| * | ||
| * @param id the resource's ID | ||
| * @param owner if the resource doesn't exists, a new one is created with the specified owner | ||
| * @return the existing {@link Resource} or a new one if it doesn't exists yet. | ||
| */ | ||
| public Resource getOrCreateById(String id, Owner owner) { | ||
| Resource resource = getById(id); | ||
| if (null == resource) { | ||
| resource = new Resource(id, owner); | ||
| em.persist(resource); | ||
| } | ||
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| return resource; | ||
| } | ||
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| /** | ||
| * Retrieves a {@link Resource} based on its ID or creates a new {@link Resource} if it doesn't exists. | ||
| * | ||
| * @param id the resource's ID | ||
| * @param principal if the resource doesn't exists, a new one is created with the specified principal | ||
| * @return the existing {@link Resource} or a new one if it doesn't exists yet. | ||
| * @see ResourceService#getOrCreateById(java.lang.String, org.hawkular.accounts.backend.entity.Owner) | ||
| */ | ||
| public Resource getOrCreateById(String id, KeycloakPrincipal principal) { | ||
| return getOrCreateById(id, userService.getByPrincipal(principal)); | ||
| } | ||
| } |
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