Question

我正在尝试使用以下代码运行mysql sql语句;

public void createUpdate(Tsaleline entity) {
    //Insert
    String sql = "Insert into tSaleLine (CenterId, ProductId, Price, VATRate) "
            + "Select :centerId, :productId, :price, :vatrate "
            + "where (Select count(*) from tSaleLine where CenterId = :centerId and ProductId = :productId)=0; "
            //Update
            + "Update tSaleLine "
            + "set CenterId = :centerId, "
            + "ProductId = :productId, "
            + "Price = :price, "
            + "VATRate = :vatrate "
            + "where CenterId = :centerId and ProductId = :productId; ";

    Query q = getEntityManager().createNativeQuery(sql);

            q.setParameter("centerId", entity.getCenterId())
            .setParameter("productId", entity.getProductId())
            .setParameter("price", entity.getPrice())
            .setParameter("vatrate", entity.getVATRate())
            .executeUpdate();
}

}

但它出现了错误：

例外

org.apache.jasper.JasperException：javax.ejb.EJBException：javax.persistence.PersistenceException：org.hibernate.exception.SQLGrammarException：无法执行本机批量操作查询

Answer 1

只有在记录不存在时才会插入。之后，它将更新价格并为指定的记录进行评估。

public void createUpdate(Tsaleline entity) {
    //Insert
    String sql = "Insert into tSaleLine (CenterId, ProductId, Price, VATRate) "
            + "Select :centerId, :productId, :price, :vatrate "
            + "where not exists (Select * from tSaleLine where CenterId = :centerId and ProductId = :productId); "
            //Update
            + "Update tSaleLine "
            + "set Price = :price, "
            + "VATRate = :vatrate "
            + "where CenterId = :centerId and ProductId = :productId; ";

    Query q = getEntityManager().createNativeQuery(sql);

            q.setParameter("centerId", entity.getCenterId())
            .setParameter("productId", entity.getProductId())
            .setParameter("price", entity.getPrice())
            .setParameter("vatrate", entity.getVATRate())
            .executeUpdate();
}

这不是理想的解决方案，因为您使用的JPA实现应该为实体处理INSERT或UPDATE。

Answer 2

感谢您对Marcelo的兴趣，我做得很蹩脚。

            entity.Tsaleline saleline = sf.findByProductIdCenterId(Integer.parseInt(productIds[i]), Integer.parseInt(centerIds[i]));
            if (saleline != null)
            {
                saleline.setPrice(Float.parseFloat(price[i]));
                saleline.setVATRate(Float.parseFloat(vat[i]));
                sf.edit(saleline);
            }
            else
            {
                saleline = new entity.Tsaleline(Integer.parseInt(productIds[i]), Integer.parseInt(centerIds[i]), Float.parseFloat(price[i]), Float.parseFloat(vat[i]));
                sf.create(saleline);
            }

insertupdate sql mysql和jpa实体

2 个答案: