spring - Passing dynamic queries in spring JPA

Question

I want to know how do we pass a query in spring JPA that has been prepared dynamically while program execution. The required query may vary according to the user input. So after framing the query manually using a for loop how do i execute this query ?

I have tried executing the query using the JDBC concept. but i want something more like :

@Query ( query_String)
public <return_type> filterNodes(String query_String);

Is this possible ?

Answer 1

您草拟的方法不起作用。

根据您创建查询的方式，有多种选项可能适合您：

• 示例查询非常有限，但有它的用途
• 规范或其 Querydsl 等价物相当灵活，我希望它们适用于您的情况，但这只是猜测，因为您没有描述如何创建查询。
• 如果一切都失败了，您可以编写一个自定义方法实现，将查询作为参数并使用 anEntityManager来执行它。