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refactor: "extracted class" for encapsulation
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src/main/java/io/github/jhipster/online/service/util/SubGenEventStatisticsService.java
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| /** | ||
| * Copyright 2017-2023 the original author or authors from the JHipster project. | ||
| * | ||
| * This file is part of the JHipster Online project, see https://github.com/jhipster/jhipster-online | ||
| * for more information. | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
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| package io.github.jhipster.online.service.util; | ||
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| import io.github.jhipster.online.domain.SubGenEvent; | ||
| import io.github.jhipster.online.domain.SubGenEvent_; | ||
| import io.github.jhipster.online.domain.enums.SubGenEventType; | ||
| import io.github.jhipster.online.service.dto.RawSQLField; | ||
| import io.github.jhipster.online.service.dto.TemporalCountDTO; | ||
| import io.github.jhipster.online.service.dto.TemporalDistributionDTO; | ||
| import io.github.jhipster.online.service.enums.TemporalValueType; | ||
| import java.time.Instant; | ||
| import java.util.*; | ||
| import java.util.stream.Collectors; | ||
| import javax.persistence.EntityManager; | ||
| import javax.persistence.criteria.CriteriaBuilder; | ||
| import javax.persistence.criteria.CriteriaQuery; | ||
| import javax.persistence.criteria.ParameterExpression; | ||
| import javax.persistence.criteria.Root; | ||
| import org.springframework.stereotype.Service; | ||
|
|
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| @Service | ||
| public class SubGenEventStatisticsService { | ||
|
|
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| private final EntityManager entityManager; | ||
|
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| public SubGenEventStatisticsService(EntityManager entityManager) { | ||
| this.entityManager = entityManager; | ||
| } | ||
|
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| public List<TemporalCountDTO> getFieldCount(Instant after, SubGenEventType field, TemporalValueType dbTemporalFunction) { | ||
| CriteriaBuilder builder = entityManager.getCriteriaBuilder(); | ||
| CriteriaQuery<RawSQLField> query = builder.createQuery(RawSQLField.class); | ||
| Root<SubGenEvent> root = query.from(SubGenEvent.class); | ||
| ParameterExpression<Instant> dateParameter = builder.parameter(Instant.class, QueryUtil.DATE); | ||
| ParameterExpression<String> typeParameter = builder.parameter(String.class, QueryUtil.TYPE); | ||
|
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||
| query | ||
| .select( | ||
| builder.construct( | ||
| RawSQLField.class, | ||
| root.get(dbTemporalFunction.getFieldName()), | ||
| root.get(SubGenEvent_.type), | ||
| builder.count(root) | ||
| ) | ||
| ) | ||
| .where( | ||
| builder.greaterThan(root.get(SubGenEvent_.date).as(Instant.class), dateParameter), | ||
| builder.equal(root.get(SubGenEvent_.type), typeParameter) | ||
| ) | ||
| .groupBy(root.get(SubGenEvent_.type), root.get(dbTemporalFunction.getFieldName())); | ||
|
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| return entityManager | ||
| .createQuery(query) | ||
| .setParameter(QueryUtil.DATE, after) | ||
| .setParameter(QueryUtil.TYPE, field.getDatabaseValue()) | ||
| .getResultList() | ||
| .stream() | ||
| .map(entry -> | ||
| new TemporalCountDTO( | ||
| TemporalValueType.absoluteMomentToInstant(entry.getMoment().longValue(), dbTemporalFunction), | ||
| entry.getCount() | ||
| ) | ||
| ) | ||
| .collect(Collectors.toList()); | ||
| } | ||
|
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| public List<TemporalDistributionDTO> getDeploymentToolDistribution(Instant after, TemporalValueType dbTemporalFunction) { | ||
| Map<SubGenEventType, List<TemporalCountDTO>> entries = Arrays | ||
| .stream(SubGenEventType.getDeploymentTools()) | ||
| .map(deploymentTool -> new AbstractMap.SimpleEntry<>(deploymentTool, getFieldCount(after, deploymentTool, dbTemporalFunction))) | ||
| .collect(Collectors.toMap(AbstractMap.SimpleEntry::getKey, AbstractMap.SimpleEntry::getValue)); | ||
|
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| List<TemporalDistributionDTO> result = new ArrayList<>(); | ||
| for (Map.Entry<SubGenEventType, List<TemporalCountDTO>> entry : entries.entrySet()) { | ||
| for (TemporalCountDTO count : entry.getValue()) { | ||
| Optional<TemporalDistributionDTO> maybeDistribution = result | ||
| .stream() | ||
| .filter(td -> td.getDate().equals(count.getDate())) | ||
| .findFirst(); | ||
| TemporalDistributionDTO distributionDTO; | ||
| if (maybeDistribution.isPresent()) { | ||
| distributionDTO = maybeDistribution.get(); | ||
| } else { | ||
| distributionDTO = new TemporalDistributionDTO(count.getDate()); | ||
| result.add(distributionDTO); | ||
| } | ||
|
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| distributionDTO.getValues().put(entry.getKey().getDatabaseValue(), count.getCount()); | ||
| } | ||
| } | ||
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| return result; | ||
| } | ||
| } |