Hibernate具有批处理功能。但是在以上情况下,我使用的是Native sql,根据我的观察,hibernate批处理对于Native sql并不是很有效。是的,可以肯定的是它可以避免内存不足错误,但不会提高性能。因此,我退缩到在Hibernate中实现JDBC Batch.Hibernate提供了doWork()
从Hibernate Session获取连接的方法。
Session session = sessionFactory.openSession();
Transaction tx = session.beginTransaction();
//get Connction from Session
session.doWork(new Work() {
@Override
public void execute(Connection conn) throws sqlException {
PreparedStatement pstmt = null;
try{
String sqlInsert = "insert into sampletbl (name) values (?) ";
pstmt = conn.prepareStatement(sqlInsert );
int i=0;
for(String name : list){
pstmt .setString(1, name);
pstmt .addBatch();
//20 : JDBC batch size
if ( i % 20 == 0 ) {
pstmt .executeBatch();
}
i++;
}
pstmt .executeBatch();
}
finally{
pstmt .close();
}
}
});
tx.commit();
session.close();