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@ -25,7 +25,10 @@ import java.io.Serializable;
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import java.lang.reflect.ParameterizedType;
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import java.lang.reflect.Type;
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import java.text.ParseException;
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import java.util.*;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import java.util.UUID;
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/**
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* Service基础类。此类基于Spring Data JPA进行封装(Spring Data JPA又是基于JPA封装,EHR平台使用Hibernate作为JPA实现者)。
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@ -38,20 +41,19 @@ import java.util.*;
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*/
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@Transactional(propagation = Propagation.SUPPORTS)
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public class BaseJpaService<T, R> {
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Class<R> repoClass;
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@PersistenceContext
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protected EntityManager entityManager;
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@Autowired
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protected JdbcTemplate jdbcTemplate;
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@Autowired
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protected ObjectMapper objectMapper;
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Class<R> repoClass;
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public BaseJpaService(){
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public BaseJpaService() {
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Type genType = getClass().getGenericSuperclass();
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if ((genType instanceof ParameterizedType)) {
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Type[] params = ((ParameterizedType) genType).getActualTypeArguments();
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if (params.length==2) {
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if (params.length == 2) {
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repoClass = (Class) params[1];
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}
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}
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@ -84,36 +86,44 @@ public class BaseJpaService<T, R> {
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return (Class) parameters[0];
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}
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public List search(String fields, String filters, String sorts, Integer page, Integer size) throws ParseException {
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public List<T> search(String fields, String filters, String sorts, Integer page, Integer size) throws ParseException {
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URLQueryParser queryParser = createQueryParser(fields, filters, sorts);
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CriteriaQuery query = queryParser.makeCriteriaQuery();
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if (page == null || page <= 0) page = PageArg.DefaultPage;
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if (size == null || size <= 0 || size > 10000) size = PageArg.DefaultSize;
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if (page == null || page <= 0) {
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page = PageArg.DefaultPage;
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}
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if (size == null || size <= 0 || size > 10000) {
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size = PageArg.DefaultSize;
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}
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return entityManager
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List resultList = entityManager
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.createQuery(query)
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.setFirstResult((page - 1) * size)
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.setMaxResults(size)
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.getResultList();
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return (List<T>) resultList;
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}
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public List search(String filters) throws ParseException {
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public List<T> search(String filters) throws ParseException {
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URLQueryParser queryParser = createQueryParser("", filters, "");
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CriteriaQuery query = queryParser.makeCriteriaQuery();
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return entityManager
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List resultList = entityManager
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.createQuery(query)
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.getResultList();
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return (List<T>) resultList;
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}
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public List search(String filters,String sorts) throws ParseException {
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public List<T> search(String filters, String sorts) throws ParseException {
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URLQueryParser queryParser = createQueryParser("", filters, sorts);
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CriteriaQuery query = queryParser.makeCriteriaQuery();
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return entityManager
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List resultList = entityManager
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.createQuery(query)
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.getResultList();
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return (List<T>) resultList;
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}
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public long getCount(String filters) throws ParseException {
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@ -123,51 +133,15 @@ public class BaseJpaService<T, R> {
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return (long) entityManager.createQuery(query).getSingleResult();
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}
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protected <T> URLQueryParser createQueryParser(String fields, String filters, String orders) {
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URLQueryParser queryParser = new URLQueryParser<T>(fields, filters, orders)
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.setEntityManager(entityManager)
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.setEntityClass(getEntityClass());
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return queryParser;
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}
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protected <T> URLQueryParser createQueryParser(String filters) {
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URLQueryParser queryParser = new URLQueryParser<T>(filters)
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.setEntityManager(entityManager)
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.setEntityClass(getEntityClass());
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return queryParser;
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}
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protected Sort parseSorts(String sorter){
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if (StringUtils.isNotEmpty(sorter)) {
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String[] orderArray = sorter.split(",");
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List<Sort.Order> orderList = new ArrayList<>(orderArray.length);
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Arrays.stream(orderArray).forEach(
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elem -> orderList.add(
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elem.startsWith("+") ? new Sort.Order(Sort.Direction.ASC, elem.substring(1)):
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new Sort.Order(Sort.Direction.DESC, elem.substring(1))));
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return new Sort(orderList);
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}
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return null;
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}
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protected Session currentSession() {
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return entityManager.unwrap(Session.class);
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}
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public PagingAndSortingRepository getRepository() {
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return (PagingAndSortingRepository) SpringContext.getService(repoClass);
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}
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public JpaRepository getJpaRepository(){
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public JpaRepository getJpaRepository() {
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return (JpaRepository) SpringContext.getService(repoClass);
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}
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public List<T> findByField(String field, Object value){
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public List<T> findByField(String field, Object value) {
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return findByFields(
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new String[]{field},
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@ -175,37 +149,38 @@ public class BaseJpaService<T, R> {
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);
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}
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public List<T> findByFields(String[] fields, Object[] values){
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public List<T> findByFields(String[] fields, Object[] values) {
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CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
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CriteriaQuery query = criteriaBuilder.createQuery(getEntityClass());
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Root<T> root = query.from(getEntityClass());
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List<Predicate> ls = new ArrayList<>();
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for(int i=0; i< fields.length; i++){
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if(values[i].getClass().isArray())
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ls.add(criteriaBuilder.in(root.get(fields[i]).in((Object[])values[i])));
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else
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for (int i = 0; i < fields.length; i++) {
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if (values[i].getClass().isArray()) {
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ls.add(criteriaBuilder.in(root.get(fields[i]).in((Object[]) values[i])));
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} else {
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ls.add(criteriaBuilder.equal(root.get(fields[i]), values[i]));
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}
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}
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query.where(ls.toArray(new Predicate[ls.size()]));
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return entityManager
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List resultList = entityManager
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.createQuery(query)
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.getResultList() ;
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.getResultList();
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return (List<T>) resultList;
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}
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public String getClzName(){
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public String getClzName() {
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return getEntityClass().getName();
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}
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public String getEntityIdFiled(){
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public String getEntityIdFiled() {
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EntityType entityType = entityManager.getMetamodel().entity(getEntityClass());
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javax.persistence.metamodel.Type type = entityType.getIdType();
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String s = entityType.getId(type.getJavaType()).getName();
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return s;
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}
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public int delete(Object[] ids){
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String hql = " DELETE FROM "+getEntityClass().getName()+" WHERE "+getEntityIdFiled()+" in(:ids)";
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public int delete(Object[] ids) {
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String hql = " DELETE FROM " + getEntityClass().getName() + " WHERE " + getEntityIdFiled() + " in(:ids)";
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Query query = currentSession().createQuery(hql);
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query.setParameterList("ids", ids);
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return query.executeUpdate();
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@ -225,20 +200,36 @@ public class BaseJpaService<T, R> {
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return UUID.randomUUID().toString().replaceAll("-", "");
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}
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/**
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* 获取指定长度的随机字符串
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* @param length
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* @return
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*/
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protected String getRandomString(int length) {
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String str = "abcdefghigklmnopkrstuvwxyzABCDEFGHIGKLMNOPQRSTUVWXYZ0123456789";
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StringBuffer buffer = new StringBuffer();
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Random random = new Random();
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for (int i = 0; i < length; i++) {
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int number = random.nextInt(str.length() - 1);//0~61
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buffer.append(str.charAt(number));
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protected <t> URLQueryParser createQueryParser(String fields, String filters, String orders) {
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return new URLQueryParser<t>(fields, filters, orders)
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.setEntityManager(entityManager)
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.setEntityClass(getEntityClass());
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}
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protected <t> URLQueryParser createQueryParser(String filters) {
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return new URLQueryParser<t>(filters)
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.setEntityManager(entityManager)
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.setEntityClass(getEntityClass());
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}
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protected Sort parseSorts(String sorter) {
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if (StringUtils.isNotEmpty(sorter)) {
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String[] orderArray = sorter.split(",");
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List<Sort.Order> orderList = new ArrayList<>(orderArray.length);
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Arrays.stream(orderArray).forEach(
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elem -> orderList.add(
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elem.startsWith("+") ? new Sort.Order(Sort.Direction.ASC, elem.substring(1)) :
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new Sort.Order(Sort.Direction.DESC, elem.substring(1))));
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return new Sort(orderList);
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}
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return buffer.toString();
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return null;
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}
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protected Session currentSession() {
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return entityManager.unwrap(Session.class);
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}
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}
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