BServiceImpl.java
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package com.bsth.service.schedule.impl;
import com.bsth.entity.search.CustomerSpecs;
import com.bsth.repository.BaseRepository;
import com.bsth.service.schedule.BService;
import com.bsth.service.schedule.ScheduleException;
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.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.domain.Specification;
import javax.persistence.EntityManager;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/**
* 基础BService实现。
*/
public class BServiceImpl<T, ID extends Serializable> implements BService<T, ID> {
@Autowired
private BaseRepository<T, ID> baseRepository;
@Autowired
private EntityManager entityManager;
@Value("${hibernate.jdbc.batch_size}")
private int batchSize;
/** 日志记录器 */
protected Logger logger = LoggerFactory.getLogger(this.getClass());
// CRUD 操作
// Create，Update操作
@Override
public T save(T t) {
if (logger.isDebugEnabled()) {
logger.debug("save...");
}
return baseRepository.save(t);
}
@Override
public <S extends T> List<S> bulkSave(List<S> entities) {
if (logger.isDebugEnabled()) {
logger.debug("bulkSave...");
}
// 不使用内部批量保存，自己实现批量保存
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;
}
// Research操作
@Override
public T findById(ID id) {
if (logger.isDebugEnabled()) {
logger.debug("findById...");
}
return baseRepository.findOne(id);
}
@Override
public List<T> findAll() {
if (logger.isDebugEnabled()) {
logger.debug("findAll...");
}
return (List<T>) baseRepository.findAll();
}
@Override
public Page<T> list(Map<String, Object> param, Pageable pageable) {
if (logger.isDebugEnabled()) {
logger.debug("list(...,pageable)...");
}
// 自定义查询参数
Specification<T> specification = new CustomerSpecs<>(param);
return baseRepository.findAll(specification, pageable);
}
@Override
public List<T> list(Map<String, Object> param) {
if (logger.isDebugEnabled()) {
logger.debug("list...");
}
// 自定义查询参数
Specification<T> specification = new CustomerSpecs<>(param);
return baseRepository.findAll(specification);
}
// Delete操作
@Override
public void delete(ID id) throws ScheduleException {
if (logger.isDebugEnabled()) {
logger.debug("delete...");
}
baseRepository.delete(id);
}
}