本文介绍了HQL IN运算符,枚举类ClassCastException的Array的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
class A { @Enumerated(值= EnumType.STRING) AType类型; } 枚举AType { X,Y }
如果我运行
query = FROM A a WHERE a.type =:type query.setParameter(type,AType.X);一切都很好,并且很棒。
但是,如果我做了以下事情:
AType [] types = new AType [1]; 类型[0] = AType.X; query = FROM A WHERE a.type IN(:types) query.setParameter(types,types);我得到:
Lcom.src.AType;不能转换为java.lang.Enum如果我这样做:
Enum [] types = new Enum [1]; 类型[0] = AType.X; query = FROM A WHERE a.type IN(:types) query.setParameter(types,types);我得到:
Ljava.lang.Enum;无法转换为java.lang.Enum有什么想法?
解决方案query.setParameterList(types,types); ^ -
这应该做到。
Here is my stripped down class and enum.
class A { @Enumerated (value = EnumType.STRING) AType type; } enum AType { X,Y }if I run
query = FROM A a WHERE a.type = :type query.setParameter("type", AType.X);All is fine and dandy.
However if I do the following:
AType[] types = new AType[1]; types[0] = AType.X; query = FROM A a WHERE a.type IN (:types) query.setParameter("types", types);I get:
Lcom.src.AType; cannot be cast to java.lang.EnumIf I do:
Enum[] types = new Enum[1]; types[0] = AType.X; query = FROM A a WHERE a.type IN (:types) query.setParameter("types", types);I get:
Ljava.lang.Enum; cannot be cast to java.lang.EnumAny ideas?
解决方案 query.setParameterList("types", types); ^--This should do it.
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HQL IN运算符,枚举类ClassCastException的Array
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