128 lines
6.0 KiB
Java
128 lines
6.0 KiB
Java
package org.hostsharing.hsadminng.service;
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import java.util.List;
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import javax.persistence.criteria.JoinType;
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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 io.github.jhipster.service.QueryService;
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import org.hostsharing.hsadminng.domain.Customer;
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import org.hostsharing.hsadminng.domain.*; // for static metamodels
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import org.hostsharing.hsadminng.repository.CustomerRepository;
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import org.hostsharing.hsadminng.service.dto.CustomerCriteria;
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import org.hostsharing.hsadminng.service.dto.CustomerDTO;
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import org.hostsharing.hsadminng.service.mapper.CustomerMapper;
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/**
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* Service for executing complex queries for Customer entities in the database.
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* The main input is a {@link CustomerCriteria} 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 CustomerDTO} or a {@link Page} of {@link CustomerDTO} 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 CustomerQueryService extends QueryService<Customer> {
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private final Logger log = LoggerFactory.getLogger(CustomerQueryService.class);
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private final CustomerRepository customerRepository;
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private final CustomerMapper customerMapper;
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public CustomerQueryService(CustomerRepository customerRepository, CustomerMapper customerMapper) {
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this.customerRepository = customerRepository;
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this.customerMapper = customerMapper;
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}
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/**
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* Return a {@link List} of {@link CustomerDTO} 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<CustomerDTO> findByCriteria(CustomerCriteria criteria) {
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log.debug("find by criteria : {}", criteria);
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final Specification<Customer> specification = createSpecification(criteria);
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return customerMapper.toDto(customerRepository.findAll(specification));
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}
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/**
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* Return a {@link Page} of {@link CustomerDTO} 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<CustomerDTO> findByCriteria(CustomerCriteria criteria, Pageable page) {
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log.debug("find by criteria : {}, page: {}", criteria, page);
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final Specification<Customer> specification = createSpecification(criteria);
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return customerRepository.findAll(specification, page)
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.map(customerMapper::toDto);
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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(CustomerCriteria criteria) {
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log.debug("count by criteria : {}", criteria);
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final Specification<Customer> specification = createSpecification(criteria);
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return customerRepository.count(specification);
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}
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/**
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* Function to convert CustomerCriteria to a {@link Specification}
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*/
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private Specification<Customer> createSpecification(CustomerCriteria criteria) {
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Specification<Customer> 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(buildSpecification(criteria.getId(), Customer_.id));
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}
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if (criteria.getReference() != null) {
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specification = specification.and(buildRangeSpecification(criteria.getReference(), Customer_.reference));
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}
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if (criteria.getPrefix() != null) {
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specification = specification.and(buildStringSpecification(criteria.getPrefix(), Customer_.prefix));
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}
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if (criteria.getName() != null) {
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specification = specification.and(buildStringSpecification(criteria.getName(), Customer_.name));
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}
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if (criteria.getContractualSalutation() != null) {
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specification = specification.and(buildStringSpecification(criteria.getContractualSalutation(), Customer_.contractualSalutation));
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}
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if (criteria.getContractualAddress() != null) {
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specification = specification.and(buildStringSpecification(criteria.getContractualAddress(), Customer_.contractualAddress));
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}
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if (criteria.getBillingSalutation() != null) {
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specification = specification.and(buildStringSpecification(criteria.getBillingSalutation(), Customer_.billingSalutation));
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}
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if (criteria.getBillingAddress() != null) {
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specification = specification.and(buildStringSpecification(criteria.getBillingAddress(), Customer_.billingAddress));
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}
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if (criteria.getRemark() != null) {
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specification = specification.and(buildStringSpecification(criteria.getRemark(), Customer_.remark));
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}
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if (criteria.getMembershipId() != null) {
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specification = specification.and(buildSpecification(criteria.getMembershipId(),
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root -> root.join(Customer_.memberships, JoinType.LEFT).get(Membership_.id)));
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}
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if (criteria.getSepamandateId() != null) {
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specification = specification.and(buildSpecification(criteria.getSepamandateId(),
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root -> root.join(Customer_.sepamandates, JoinType.LEFT).get(SepaMandate_.id)));
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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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