Question

我正在将Hql Query转换为jpql但是错误非法使用LONG数据类型

String jpqlQuery="select entity "+
            "FROM Entity entity "+
            "WHERE  CAST(SUBSTRING(entity.nameId,2,12) AS long) >CAST( :String1 AS long) "+
            "AND CAST(SUBSTRING(entity.nameId,2,12) AS long)<= CAST( :String2 AS long) ";

所以任何人都可以知道如何在jpql中为上述查询进行转换吗？

Answer 1

尝试使用decimal或NUMERIC代替long：

像这样

CAST(SUBSTRING(entity.nameId, 2, 12) AS DECIMAL(2,12))

并且不会传递字符串并将其强制转换为查询，而是可以在将其传递给查询之前对其进行转换：

例如：

String jpqlQuery = "select entity "+
            "FROM Entity entity "+
            "WHERE  CAST(SUBSTRING(entity.nameId, 2, 12) AS DECIMAL(2,12)) > value1 "+
            "AND CAST(SUBSTRING(entity.nameId, 2, 12) AS DECIMAL(2,12)) <= value2 ";

Query query = session.createQuery(jpqlQuery);

query.setParametter("value1", Long.valueOf(value1));
query.setParametter("value2", Long.valueOf(value2));

如何解决＆＃34;非法使用LONG数据类型＆＃34;在JPA

1 个答案: