112 lines
4.8 KiB
Java
112 lines
4.8 KiB
Java
package org.datasurvey.service;
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import java.util.List;
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import javax.persistence.criteria.JoinType;
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import org.datasurvey.domain.*; // for static metamodels
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import org.datasurvey.domain.Categoria;
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import org.datasurvey.repository.CategoriaRepository;
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import org.datasurvey.service.criteria.CategoriaCriteria;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.data.domain.Page;
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import org.springframework.data.domain.Pageable;
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import org.springframework.data.jpa.domain.Specification;
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import org.springframework.stereotype.Service;
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import org.springframework.transaction.annotation.Transactional;
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import tech.jhipster.service.QueryService;
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/**
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* Service for executing complex queries for {@link Categoria} entities in the database.
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* The main input is a {@link CategoriaCriteria} which gets converted to {@link Specification},
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* in a way that all the filters must apply.
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* It returns a {@link List} of {@link Categoria} or a {@link Page} of {@link Categoria} which fulfills the criteria.
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*/
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@Service
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@Transactional(readOnly = true)
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public class CategoriaQueryService extends QueryService<Categoria> {
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private final Logger log = LoggerFactory.getLogger(CategoriaQueryService.class);
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private final CategoriaRepository categoriaRepository;
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public CategoriaQueryService(CategoriaRepository categoriaRepository) {
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this.categoriaRepository = categoriaRepository;
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}
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/**
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* Return a {@link List} of {@link Categoria} which matches the criteria from the database.
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* @param criteria The object which holds all the filters, which the entities should match.
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* @return the matching entities.
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*/
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@Transactional(readOnly = true)
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public List<Categoria> findByCriteria(CategoriaCriteria criteria) {
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log.debug("find by criteria : {}", criteria);
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final Specification<Categoria> specification = createSpecification(criteria);
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return categoriaRepository.findAll(specification);
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}
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/**
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* Return a {@link Page} of {@link Categoria} which matches the criteria from the database.
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* @param criteria The object which holds all the filters, which the entities should match.
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* @param page The page, which should be returned.
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* @return the matching entities.
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*/
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@Transactional(readOnly = true)
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public Page<Categoria> findByCriteria(CategoriaCriteria criteria, Pageable page) {
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log.debug("find by criteria : {}, page: {}", criteria, page);
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final Specification<Categoria> specification = createSpecification(criteria);
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return categoriaRepository.findAll(specification, page);
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}
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/**
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* Return the number of matching entities in the database.
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* @param criteria The object which holds all the filters, which the entities should match.
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* @return the number of matching entities.
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*/
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@Transactional(readOnly = true)
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public long countByCriteria(CategoriaCriteria criteria) {
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log.debug("count by criteria : {}", criteria);
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final Specification<Categoria> specification = createSpecification(criteria);
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return categoriaRepository.count(specification);
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}
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/**
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* Function to convert {@link CategoriaCriteria} to a {@link Specification}
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* @param criteria The object which holds all the filters, which the entities should match.
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* @return the matching {@link Specification} of the entity.
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*/
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protected Specification<Categoria> createSpecification(CategoriaCriteria criteria) {
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Specification<Categoria> specification = Specification.where(null);
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if (criteria != null) {
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if (criteria.getId() != null) {
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specification = specification.and(buildRangeSpecification(criteria.getId(), Categoria_.id));
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}
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if (criteria.getNombre() != null) {
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specification = specification.and(buildStringSpecification(criteria.getNombre(), Categoria_.nombre));
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}
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if (criteria.getEstado() != null) {
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specification = specification.and(buildSpecification(criteria.getEstado(), Categoria_.estado));
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}
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if (criteria.getEncuestaId() != null) {
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specification =
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specification.and(
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buildSpecification(
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criteria.getEncuestaId(),
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root -> root.join(Categoria_.encuestas, JoinType.LEFT).get(Encuesta_.id)
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)
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);
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}
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if (criteria.getPlantillaId() != null) {
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specification =
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specification.and(
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buildSpecification(
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criteria.getPlantillaId(),
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root -> root.join(Categoria_.plantillas, JoinType.LEFT).get(Plantilla_.id)
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)
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);
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}
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}
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return specification;
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}
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}
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