昆德拉·卡桑德拉 JPQL 与复合键

Question

我使用 Kundera JPA for Cassandra。昆德拉版本是：3.8

这是我的实体定义：-

@Embeddable
public class PartitionKey implements Serializable
{
@Column(name = "ID")
private String Id;
@Column (name = "TYPE")
private String Type;
}
@Embeddable
public class CompoundKey implements Serializable
{
@Embedded
private PartitionKey partitionKey;
@Column(name = "LABEL")
private String label;
}
@Embeddable
public class Comment
{
@Column(name="comment")
private String comment;
}
@Entity
@Table(name = "MY_ENTITY", schema = "xyz@cassandra_pu")
public class MyEntity
{
@EmbeddedId
private CompoundKey primaryKey;
@ElementCollection
@Column(name = "COMMENTS")
private List<Comments> comments;
}

以下是用于检索的代码段：-

Query q = entityManager.createQuery("Select e from MyEntity e where e.primaryKey.partitionKey.Id = :Id and e.primaryKey.partitionKey.Type = :Type");
q2.setParameter("Id", "ID1");
q2.setParameter("Type", "BOOK");
List<MyEntity> list=q2.getResultList();

我收到上述空指针异常：-

java.lang.NullPointerException: null
at         com.impetus.client.cassandra.datahandler.CassandraDataHandlerBase.setElementC    ollection(CassandraDataHandlerBase.java:1566) ~[kundera-cassandra-    3.9.1.jar:na]
at     com.impetus.client.cassandra.datahandler.CassandraDataHandlerBase.populateVia    Thrift(CassandraDataHandlerBase.java:1154) ~[kundera-cassandra-    3.9.1.jar:na]
at     com.impetus.client.cassandra.datahandler.CassandraDataHandlerBase.onColumn(Ca    ssandraDataHandlerBase.java:1054) ~[kundera-cassandra-3.9.1.jar:na]
at     com.impetus.client.cassandra.datahandler.CassandraDataHandlerBase.populateEnt    ity(CassandraDataHandlerBase.java:653) ~[kundera-cassandra-3.9.1.jar:na]
... 15 common frames omitted

这是我的表创建脚本：-

create TABLE "MY_ENTITY"
(
"ID" TEXT,
"TYPE" TEXT,
"LABEL" TEXT,
"COMMENTS" list<frozen <"COMMENT">>,
PRIMARY KEY("ID","TYPE","LABEL")
);

注释用户定义类型定义是：-

CREATE TYPE "COMMENT" (
comment text
);

如果我使用没有复合键的简单实体，查询就可以正常工作。我错过了什么吗？

更新：当我删除评论属性时，它工作正常。

Answer 1

此问题已修复！

https://github.com/impetus-opensource/Kundera/issues/953

它在昆德拉 3.10 中可用