/**
* Copyright © 2016-2017 The Thingsboard Authors
*
* 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.thingsboard.server.dao.sql.relation;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.ListeningExecutorService;
import com.google.common.util.concurrent.MoreExecutors;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.domain.Sort.Order;
import org.springframework.data.jpa.domain.Specification;
import org.springframework.stereotype.Component;
import org.thingsboard.server.common.data.EntityType;
import org.thingsboard.server.common.data.id.EntityId;
import org.thingsboard.server.common.data.page.TimePageLink;
import org.thingsboard.server.common.data.relation.EntityRelation;
import org.thingsboard.server.common.data.relation.RelationTypeGroup;
import org.thingsboard.server.dao.DaoUtil;
import org.thingsboard.server.dao.model.sql.RelationCompositeKey;
import org.thingsboard.server.dao.model.sql.RelationEntity;
import org.thingsboard.server.dao.relation.RelationDao;
import org.thingsboard.server.dao.sql.JpaAbstractSearchTimeDao;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Executors;
import static org.springframework.data.domain.Sort.Direction.ASC;
import static org.springframework.data.jpa.domain.Specifications.where;
import static org.thingsboard.server.dao.model.ModelConstants.*;
/**
* Created by Valerii Sosliuk on 5/29/2017.
*/
@Slf4j
@Component
@ConditionalOnProperty(prefix = "sql", value = "enabled", havingValue = "true", matchIfMissing = false)
public class JpaRelationDao implements RelationDao {
@Autowired
private RelationRepository relationRepository;
private ListeningExecutorService executorService = MoreExecutors.listeningDecorator(Executors.newFixedThreadPool(10));
@Override
public ListenableFuture<List<EntityRelation>> findAllByFrom(EntityId from, RelationTypeGroup typeGroup) {
return executorService.submit(() -> DaoUtil.convertDataList(
relationRepository.findAllByFromIdAndFromTypeAndRelationTypeGroup(
from.getId(),
from.getEntityType().name(),
typeGroup.name())));
}
@Override
public ListenableFuture<List<EntityRelation>> findAllByFromAndType(EntityId from, String relationType, RelationTypeGroup typeGroup) {
return executorService.submit(() -> DaoUtil.convertDataList(
relationRepository.findAllByFromIdAndFromTypeAndRelationTypeAndRelationTypeGroup(
from.getId(),
from.getEntityType().name(),
relationType,
typeGroup.name())));
}
@Override
public ListenableFuture<List<EntityRelation>> findAllByTo(EntityId to, RelationTypeGroup typeGroup) {
return executorService.submit(() -> DaoUtil.convertDataList(
relationRepository.findAllByToIdAndToTypeAndRelationTypeGroup(
to.getId(),
to.getEntityType().name(),
typeGroup.name())));
}
@Override
public ListenableFuture<List<EntityRelation>> findAllByToAndType(EntityId to, String relationType, RelationTypeGroup typeGroup) {
return executorService.submit(() -> DaoUtil.convertDataList(
relationRepository.findAllByToIdAndToTypeAndRelationTypeAndRelationTypeGroup(
to.getId(),
to.getEntityType().name(),
relationType,
typeGroup.name())));
}
@Override
public ListenableFuture<Boolean> checkRelation(EntityId from, EntityId to, String relationType, RelationTypeGroup typeGroup) {
RelationCompositeKey key =
new RelationCompositeKey(from.getId(),
from.getEntityType().name(),
to.getId(),
to.getEntityType().name(),
relationType,
typeGroup.name());
return executorService.submit(() -> relationRepository.findOne(key) != null);
}
@Override
public ListenableFuture<Boolean> saveRelation(EntityRelation relation) {
return executorService.submit(() -> relationRepository.save(new RelationEntity(relation)) != null);
}
@Override
public ListenableFuture<Boolean> deleteRelation(EntityRelation relation) {
RelationCompositeKey key = new RelationCompositeKey(relation);
return executorService.submit(
() -> {
boolean relationExistsBeforeDelete = relationRepository.exists(key);
relationRepository.delete(key);
return relationExistsBeforeDelete;
});
}
@Override
public ListenableFuture<Boolean> deleteRelation(EntityId from, EntityId to, String relationType, RelationTypeGroup typeGroup) {
RelationCompositeKey key =
new RelationCompositeKey(from.getId(),
from.getEntityType().name(),
to.getId(),
to.getEntityType().name(),
relationType,
typeGroup.name());
return executorService.submit(
() -> {
boolean relationExistsBeforeDelete = relationRepository.exists(key);
relationRepository.delete(key);
return relationExistsBeforeDelete;
});
}
@Override
public ListenableFuture<Boolean> deleteOutboundRelations(EntityId entity) {
RelationEntity relationEntity = new RelationEntity();
relationEntity.setFromId(entity.getId());
relationEntity.setFromType(entity.getEntityType().name());
return executorService.submit(
() -> {
boolean relationExistsBeforeDelete = relationRepository
.findAllByFromIdAndFromType(relationEntity.getFromId(), relationEntity.getFromType())
.size() > 0;
relationRepository.delete(relationEntity);
return relationExistsBeforeDelete;
});
}
@Override
public ListenableFuture<List<EntityRelation>> findRelations(EntityId from, String relationType, RelationTypeGroup typeGroup, EntityType childType, TimePageLink pageLink) {
Specification<RelationEntity> timeSearchSpec = JpaAbstractSearchTimeDao.<RelationEntity>getTimeSearchPageSpec(pageLink, RELATION_TO_ID_PROPERTY);
Specification<RelationEntity> fieldsSpec = getEntityFieldsSpec(from, relationType, typeGroup, childType);
Pageable pageable = new PageRequest(0, pageLink.getLimit(),
new Sort(
new Order(ASC, RELATION_TYPE_GROUP_PROPERTY),
new Order(ASC, RELATION_TYPE_PROPERTY),
new Order(ASC, RELATION_TO_TYPE_PROPERTY))
);
return executorService.submit(() ->
DaoUtil.convertDataList(relationRepository.findAll(where(timeSearchSpec).and(fieldsSpec), pageable).getContent()));
}
private Specification<RelationEntity> getEntityFieldsSpec(EntityId from, String relationType, RelationTypeGroup typeGroup, EntityType childType) {
return new Specification<RelationEntity>() {
@Override
public Predicate toPredicate(Root<RelationEntity> root, CriteriaQuery<?> criteriaQuery, CriteriaBuilder criteriaBuilder) {
List<Predicate> predicates = new ArrayList<>();
if (from != null) {
Predicate fromIdPredicate = criteriaBuilder.equal(root.get(RELATION_FROM_ID_PROPERTY), from.getId());
predicates.add(fromIdPredicate);
Predicate fromEntityTypePredicate = criteriaBuilder.equal(root.get(RELATION_FROM_TYPE_PROPERTY), from.getEntityType().name());
predicates.add(fromEntityTypePredicate);
}
if (relationType != null) {
Predicate relationTypePredicate = criteriaBuilder.equal(root.get(RELATION_TYPE_PROPERTY), relationType);
predicates.add(relationTypePredicate);
}
if (typeGroup != null) {
Predicate typeGroupPredicate = criteriaBuilder.equal(root.get(RELATION_TYPE_GROUP_PROPERTY), typeGroup);
predicates.add(typeGroupPredicate);
}
if (childType != null) {
Predicate childTypePredicate = criteriaBuilder.equal(root.get(RELATION_TO_TYPE_PROPERTY), childType.name());
predicates.add(childTypePredicate);
}
return criteriaBuilder.and(predicates.toArray(new Predicate[0]));
}
};
}
}