BaseServiceImpl.java
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package com.bsth.service.impl;
import com.bsth.common.ResponseCode;
import com.bsth.entity.search.CustomerSpecs;
import com.bsth.repository.BaseRepository;
import com.bsth.service.BaseService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.dao.DataIntegrityViolationException;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import javax.persistence.EntityManager;
import java.io.Serializable;
import java.util.*;
public class BaseServiceImpl<T, ID extends Serializable> implements BaseService<T, ID>{
@Autowired
private BaseRepository<T, ID> baseRepository;
@Autowired
private EntityManager entityManager;
@Value("${hibernate.jdbc.batch_size}")
private int batchSize;
Logger logger = LoggerFactory.getLogger(this.getClass());
@Override
public Page<T> list(Map<String, Object> map, Pageable pageable) {
return this.baseRepository.findAll(new CustomerSpecs<T>(map), pageable);
}
@Override
public Iterable<T> list(Map<String, Object> map) {
return this.baseRepository.findAll(new CustomerSpecs<T>(map));
}
@Override
public T findById(ID id) {
return baseRepository.findOne(id);
}
@Override
public Map<String, Object> save(T t) {
Map<String, Object> map = new HashMap<>();
baseRepository.save(t);
map.put("status", ResponseCode.SUCCESS);
map.put("t", t);
return map;
}
@Override
public <S extends T> Collection<S> bulkSave(Collection<S> entities) {
final List<S> savedEntities = new ArrayList<>(entities.size());
int i = 0;
for (S t : entities) {
entityManager.persist(t);
savedEntities.add(t);
i++;
if (i % batchSize == 0) {
entityManager.flush();
entityManager.clear();
}
}
return savedEntities;
}
@Override
public Iterable<T> findAll() {
return baseRepository.findAll();
}
@Override
public Map<String, Object> delete(ID id) {
Map<String, Object> map = new HashMap<>();
try{
baseRepository.delete(id);
map.put("status", ResponseCode.SUCCESS);
}catch(DataIntegrityViolationException de){
map.put("status", ResponseCode.ERROR);
map.put("msg", "“完整性约束”校验失败，请检查要删除的对象是否存在外键约束");
}
return map;
}
@Override
public Map<String, Object> validateEquale(Map<String, Object> params) {
Map<String, Object> returnMap = new HashMap<>();
try {
if (params == null || params.size() == 0) {
returnMap.put("status", ResponseCode.SUCCESS);
returnMap.put("msg", "此时没有重复");
} else {
Iterable<T> iterable = list(params);
if (iterable.iterator().hasNext()) {
returnMap.put("status", ResponseCode.ERROR);
returnMap.put("msg", "数据重复");
} else {
returnMap.put("status", ResponseCode.SUCCESS);
returnMap.put("msg", "没有重复");
}
}
} catch (Exception exp) {
logger.error("validateEquale error", exp);
returnMap.put("status", ResponseCode.ERROR);
returnMap.put("msg", exp.getLocalizedMessage());
}
return returnMap;
}
}