[
https://issues.apache.org/jira/browse/CAY-1728?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Andrus Adamchik updated CAY-1728:
---------------------------------
Attachment: 0001X-testing-custom-types-as-PK.patch
A variation of the earlier patch where "UuidPkEntity -> UuidRelated"
relationship was renamed from "related" to "arelated", which changed the order
of iteration of properties in SelectTranslator, and this causes the problem
described on the list on any select from UuidPkEntity:
java.lang.ClassCastException: java.lang.String cannot be cast to java.util.UUID
at
org.apache.cayenne.testdo.testmap.auto._UuidPkEntity.getId(_UuidPkEntity.java:26)
at
org.apache.cayenne.access.UUIDTest.testUUIDMeaningfulPkSelectViaRelationship1(UUIDTest.java:107)
> Custom types used for PK are causing grief in relationships
> -----------------------------------------------------------
>
> Key: CAY-1728
> URL: https://issues.apache.org/jira/browse/CAY-1728
> Project: Cayenne
> Issue Type: Bug
> Components: Core Library
> Affects Versions: 3.1B1, 3.2M1
> Reporter: Andrus Adamchik
> Assignee: Andrus Adamchik
> Attachments: 0001-testing-custom-types-as-PK.patch,
> 0001X-testing-custom-types-as-PK.patch
>
>
> 1. Map an entity with meaningful PK, type of that PK being a non-standard
> type for a given type of column (e.g. attached test case demonstrating the
> problem maps a VARCHAR column to java.util.UUID).
> 2. Map another entity with an FK to the first entity, and create a to-one
> relaionship.
> 3. Fetch entity 2 and try to read the relationship to entity 1. The result is
> a FaultFailureException similar to this one:
> org.apache.cayenne.FaultFailureException: [v.3.2M1-SNAPSHOT
> ${project.build.date} ${project.build.time}] Error resolving fault for
> ObjectId: <ObjectId:UuidPkEntity, ID=8251ae98-de42-404c-9cd0-9c1b29410604>
> and state (hollow). Possible cause - matching row is missing from the
> database.
> at org.apache.cayenne.BaseContext.prepareForAccess(BaseContext.java:316)
> at
> org.apache.cayenne.CayenneDataObject.readProperty(CayenneDataObject.java:174)
> at
> org.apache.cayenne.testdo.testmap.auto._UuidPkEntity.getId(_UuidPkEntity.java:26)
> at
> org.apache.cayenne.access.UUIDTest.testUUIDMeaningfulPkSelectViaRelationship(UUIDTest.java:107)
> The reason is that expected ObjectId of the target entity contains a value of
> type String instead of UUID, so expected and fetched ObjectId do not match,
> and Cayenne thinks there's no object for relationship.
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