How to use the Service class
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Service is used to handle business logic and to invoke DAO to manipulate the database.
Configuration file
The Service of the system is configured in @ ComponentScan ({"com.jspxcms.core.service.impl", "com.jspxcms.ext.service.impl"}) of com.jspxcms.core.ContextConfig.
The Service for this example is configured in @ ComponentScan ({"com.jspxcms.plug.service.impl"}) of com.jspxcms.plug.ContextConfig.
Service class package com.jspxcms.plug.service.impl;@Service@Transactional (readOnly = true) public class ResumeServiceImpl implements ResumeService {public Page findAll (Integer siteId,Map params, Pageable pageable) {return dao.findAll (spec (siteId, params), pageable);} public RowSide findSide (Integer siteId,Map params, Resume bean, Integer position, Sort sort) {if (position = = null) {return new RowSide () } Limitable limit = RowSide.limitable (position, sort); List list = dao.findAll (spec (siteId, params), limit); return RowSide.create (list, bean);} private Specification spec (final Integer siteId, Map params) {Collection filters = SearchFilter.parse (params). Values (); final Specification fsp = SearchFilter.spec (filters, Resume.class) Specification sp = new Specification () {public Predicate toPredicate (Root root, CriteriaQuery query, CriteriaBuilder cb) {Predicate pred = fsp.toPredicate (root, query, cb); if (siteId! = null) {pred = cb.and (pred, cb.equal (root.get ("site"). Get ("id"), siteId);} return pred;}}; return sp;} private ResumeDao dao; @ Autowired public void setDao (ResumeDao dao) {this.dao = dao;}}
This class uses the Specification query method to JPA. The background list can be sorted by any column by clicking on the header, the list page can be queried by any field, and the function of editing one or the next item on the page can be realized.
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