JPA多個實體集合查詢

Question

我在SQL如下：

SELECT * FROM table2 t2, table1 t1 WHERE t1.id=1 AND t2.t1_id IN(1, 2); 

我會怎麼做，在JPA？

我想：

SELECT t2 FROM Table2 t2, Table1 t1 WHERE t1.id = :t1_id AND t2.t1 IN (t1.t1Collection) 

隨着僞類：

Table1 
    private int id; 
    private Collection<Table1> t1Collection; 

Table2 
    private int t2; 
    private Table1 t1_id; 

，但我得到：

org.hibernate.exception.SQLGrammarException: could not execute query; nested exception is javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query 

Answer 1

嘗試elements關鍵字：

SELECT t2 FROM Table2 t2, Table1 t1 WHERE t1.id = :t1_id AND t2.t1 IN elements(t1.t1Collection)