CODEWITHSUNDEEP
jpaeclipselinkone-to-many
kishore
kishore

Reputation: 11

Map a Map<Long, List<POJO>> through JPA eclipselink

I have a similar requirement as that of problem statement defined in I want to map a Map<Long, List<POJO>> through JPA

I am using eclipselink, I also had to create a separate class ItemAttributes , but in this class atleast I have to use primarykey for table ITEM_ATTRIBUTE. However the configuration is able to fetch the results in map, but while creating new record the eclipselink tries to consider the ItemAttributes as entity & hence ends up in inserting value for primarykey(which is null) in table ITEM_ATTRIBUTE which I don't want , I want only the list of - List attributes to be inserted. Surprisingly I cannot make the primary key as read only declared in ItemAttributes class.

Any idea how to avoid this? Further I cannot make the descriptor class ItemAttributes as read only as it will skip the creation part of entire table ITEM_ATTRIBUTE I am using eclipselink workbench for configuration.

Upvotes: 0

Views: 139

Answers (1)

James
James

Reputation: 18379

You need to create an Entity class to represent the relationship as in the answer to the other post.

What is your exact model/data model.

Your intermediate class will need an Id, you can use an @GeneratedValue if you have no logical one.

Upvotes: 1

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