Error column specified more than once when inserting an entity with EmbeddedId using Micronaut Data - postgresql

Question

I'm using Micronaut Data JDBC and I'm facing an error. I have this entity:
#MappedEntity(value = "document_metadata")
#AllArgsConstructor
#EqualsAndHashCode
public class DocumentMetadataJDBCEntity implements DocumentMetadata {
#Embeddable
#AllArgsConstructor
public static class MetadataPk {
#MappedProperty(value = "document_uid")
#NotNull
private UUID documentUid;
#MappedProperty(value = "metadata_key")
#NotNull
private String metadataKey;
public UUID getDocumentUid() {
return documentUid;
}
public String getMetadataKey() {
return metadataKey;
}
}
#EmbeddedId
private MetadataPk metadataPk;
#NotNull
private String metadataValue;
public MetadataPk getMetadataPk() {
return metadataPk;
}
#Override
public String getMetadataKey() {
return getMetadataPk().getMetadataKey();
}
#Override
public String getMetadataValue() {
return metadataValue;
}
public UUID getDocumentUid() {
return getMetadataPk().getDocumentUid();
}
}
And when inserting I get this error:
io.micronaut.data.exceptions.DataAccessException: SQL error executing INSERT: Batch entry 0 INSERT INTO "document_metadata" ("metadata_key","metadata_value","document_uid","document_uid","metadata_key") VALUES ('id','1234','c960d8de-99a4-40a6-91bf-b0d4a73910d6'::uuid,'c960d8de-99a4-40a6-91bf-b0d4a73910d6'::uuid,'id') was aborted: ERROR: column "document_uid" specified more than once
The code for saving is the next one:
Set<DocumentMetadataJDBCEntity> metadataSet = metadata.entrySet().stream()
.map(e -> new DocumentMetadataJDBCEntity(new DocumentMetadataJDBCEntity.MetadataPk(
savedDocument.getUid(), e.getKey()), e.getValue())).collect(toSet());
Iterable<DocumentMetadataJDBCEntity> persistedMetadata = documentMetadataJDBCRepository.saveAll(metadataSet);
Any idea?

Answer 1

Add #Transient to your convenience accessor (getter) methods:
#Override
#Transient
public String getMetadataKey() {
return getMetadataPk().getMetadataKey();
}
#Transient
public UUID getDocumentUid() {
return getMetadataPk().getDocumentUid();
}
It "tells" Micronaut not to save the return value into the DB.