Spring/spring-data-jpa
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Polishing.

Browse Source 
Tweak wording.

See: #3286
Original pull request: #3449
This commit is contained in:
Mark Paluch
2024-12-03 10:29:29 +01:00
parent 3b59550b6b
commit 229db64d36
1 changed files with 3 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
src/main/antora/modules/ROOT/pages/repositories/projections.adoc
View File

@@ -18,8 +18,9 @@ include::{commons}@data-commons::page$repositories/projections-class.adoc[levelo
[NOTE]
====
Some JPA providers may require additional hints when working with <<projections.dtos,Class-based projections>> especially when using those directly with method derived queries.
If you are facing errors like `JpaSystemException: Specified result type did not match Query selection type` make sure to provide a constructor hint via `@PersistenceCreator` to be passed on, as outlined below:
<<projections.dtos,Class-based projection (DTO projections)>> types must declare a single constructor so that Spring Data can determine its input properties.
If your class defines more than one constructor, then you cannot use the type without further hints for DTO projections.
In such a case annotate the desired constructor with `@PersistenceCreator` as outlined below so that Spring Data can determine which properties to select:
[source,java]
----